Built 2026-10-18 (18 October 2026)

Biser Weather Records (RSM00028138)

Record envelope, standing records and threshold days for Biser (RSM00028138), Russia, with 138 years of record.

Key Facts for Biser

  • Biser (RSM00028138) is a weather station in Russia at 58.52 latitude and 58.85 longitude, 463 m (1,519 ft) above sea level.
  • The station reports from 1888 to 2025, 138 years of record.
  • 1,464 records set at Biser still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Biser set a daily record high minimum temperature of 1.1 C (34.0 F) on 15 March 2025.

About the Station

  • Location: Russia, 58.52 latitude, 58.85 longitude.
  • Elevation: 463 m (1,519 ft).
  • Period of record: 1888 to 2025, 138 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Biser, with 2026 drawn through them The band shows the record high and record low for each calendar day at Biser. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -60-40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Biser. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Biser, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan1.5 C (34.7 F)-49.8 C (-57.6 F)n/a-25.9 C (-14.6 F)
Feb6.2 C (43.2 F)-43.3 C (-45.9 F)n/a-25.2 C (-13.4 F)
Mar15.0 C (59.0 F)-36.9 C (-34.4 F)n/a-20.8 C (-5.4 F)
Apr24.1 C (75.4 F)-26.0 C (-14.8 F)n/a-9.0 C (15.8 F)
May32.0 C (89.6 F)-15.9 C (3.4 F)24.6 C (76.3 F)-3.2 C (26.2 F)
Jun34.5 C (94.1 F)-4.8 C (23.4 F)n/a1.8 C (35.2 F)
Jul33.2 C (91.8 F)-0.9 C (30.4 F)n/a4.0 C (39.2 F)
Aug33.4 C (92.1 F)-2.8 C (27.0 F)19.0 C (66.2 F)5.7 C (42.3 F)
Sep27.2 C (81.0 F)-11.2 C (11.8 F)n/an/a
Oct20.2 C (68.4 F)-26.7 C (-16.1 F)n/an/a
Nov7.2 C (45.0 F)-38.4 C (-37.1 F)n/an/a
Dec2.5 C (36.5 F)-52.5 C (-62.5 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Biser by the year they were set 1,464 records at Biser still stand. 1958 holds the most, with 36. 0102030401891: 101892: 61893: 91894: 11895: 31896: 31897: 11898: 81899: 41900: 11901: 71902: 111903: 41904: 11905: 21906: 31908: 91909: 61910: 31911: 81912: 121913: 31914: 101915: 31916: 41917: 21918: 81919: 21925: 51926: 31927: 31928: 31929: 101930: 61931: 11932: 61933: 81934: 111935: 91936: 171937: 121938: 221939: 61940: 171941: 61942: 71943: 71944: 111945: 31946: 61947: 91948: 141949: 81950: 151951: 261952: 291953: 81954: 121955: 181956: 141957: 291958: 361959: 111960: 91961: 101962: 231963: 191964: 121965: 71966: 131967: 121968: 251969: 351970: 61971: 201972: 111973: 221974: 61975: 131976: 271977: 231978: 161979: 251980: 81981: 271982: 191983: 21984: 171985: 81986: 101987: 121988: 81989: 111990: 111991: 101992: 131993: 131994: 31995: 261996: 191997: 121998: 271999: 142000: 62001: 52002: 212003: 82004: 142005: 52006: 282007: 222008: 212009: 142010: 312011: 22012: 192013: 132014: 162015: 112016: 292017: 42018: 52019: 62020: 22021: 122022: 12023: 72024: 22025: 41891190419181936194919621975198820012014
1,464 records at Biser still stand. 1958 holds the most, with 36.
Standing records at Biser by the year they were set
Year setStanding records
189110
18926
18939
18941
18953
18963
18971
18988
18994
19001
19017
190211
19034
19041
19052
19063
19089
19096
19103
19118
191212
19133
191410
19153
19164
19172
19188
19192
19255
19263
19273
19283
192910
19306
19311
19326
19338
193411
19359
193617
193712
193822
19396
194017
19416
19427
19437
194411
19453
19466
19479
194814
19498
195015
195126
195229
19538
195412
195518
195614
195729
195836
195911
19609
196110
196223
196319
196412
19657
196613
196712
196825
196935
19706
197120
197211
197322
19746
197513
197627
197723
197816
197925
19808
198127
198219
19832
198417
19858
198610
198712
19888
198911
199011
199110
199213
199313
19943
199526
199619
199712
199827
199914
20006
20015
200221
20038
200414
20055
200628
200722
200821
200914
201031
20112
201219
201313
201416
201511
201629
20174
20185
20196
20202
202112
20221
20237
20242
20254

All-Time Record Progression

5 new records
When Biser set new all-time records 5 all-time records were set at Biser between 28 December 1932 and 19 July 2007. Each dot is a new record. Record low minimum temperatureRecord low maximum temperatureRecord daily precipitation28 December 1932: Record low minimum temperature -44.0 C (-47.2 F)26 December 1958: Record low minimum temperature -45.7 C (-50.3 F)31 December 1978: Record low maximum temperature -43.9 C (-47.0 F)31 December 1978: Record low minimum temperature -52.5 C (-62.5 F)19 July 2007: Record daily precipitation 131.7 mm (5.2 in)1940195019601970198019902000
5 all-time records were set at Biser between 28 December 1932 and 19 July 2007. Each dot is a new record.
When Biser set new all-time records
DateKindDetail
1932-12-28Record low minimum temperatureRecord low minimum temperature -44.0 C (-47.2 F)
1958-12-26Record low minimum temperatureRecord low minimum temperature -45.7 C (-50.3 F)
1978-12-31Record low maximum temperatureRecord low maximum temperature -43.9 C (-47.0 F)
1978-12-31Record low minimum temperatureRecord low minimum temperature -52.5 C (-62.5 F)
2007-07-19Record daily precipitationRecord daily precipitation 131.7 mm (5.2 in)

Wettest Day of Each Month

Jul: 131.7 mm (5.2 in)
Record daily precipitation for each month at Biser The wettest day on record for each calendar month at Biser. The most was 131.7 mm (5.2 in) on 19 July 2007. 050100150 Jan: 25.0 mm (1.0 in), 3 January 1918 Jan Feb: 17.5 mm (0.7 in), 21 February 1963 Feb Mar: 32.8 mm (1.3 in), 26 March 1906 Mar Apr: 34.9 mm (1.4 in), 17 April 1956 Apr May: 35.7 mm (1.4 in), 20 May 1906 May Jun: 49.8 mm (2.0 in), 19 June 1889 Jun Jul: 131.7 mm (5.2 in), 19 July 2007 Jul Aug: 81.7 mm (3.2 in), 12 August 1896 Aug Sep: 46.1 mm (1.8 in), 24 September 2002 Sep Oct: 34.4 mm (1.4 in), 19 October 1994 Oct Nov: 28.7 mm (1.1 in), 10 November 1927 Nov Dec: 30.0 mm (1.2 in), 15 December 1957 Dec
The wettest day on record for each calendar month at Biser. The most was 131.7 mm (5.2 in) on 19 July 2007.
Record daily precipitation for each month at Biser
MonthRecord daily precipitation (mm)Date
Jan25.0 mm (1.0 in)3 January 1918
Feb17.5 mm (0.7 in)21 February 1963
Mar32.8 mm (1.3 in)26 March 1906
Apr34.9 mm (1.4 in)17 April 1956
May35.7 mm (1.4 in)20 May 1906
Jun49.8 mm (2.0 in)19 June 1889
Jul131.7 mm (5.2 in)19 July 2007
Aug81.7 mm (3.2 in)12 August 1896
Sep46.1 mm (1.8 in)24 September 2002
Oct34.4 mm (1.4 in)19 October 1994
Nov28.7 mm (1.1 in)10 November 1927
Dec30.0 mm (1.2 in)15 December 1957

Period of Record Coverage

1894 to 2025
Days with data per year at Biser 95 years of record at Biser, 1894 to 2025. 10 years have data for under 90 percent of days and are left out of rankings: 1894, 1926, 1933, 2019, 2020, 2021, 2022, 2023 and others. 1894: 4 of 365 days1926: 30 of 365 days1933: 92 of 365 days1934: 365 of 365 days1935: 365 of 365 days1936: 366 of 366 days1937: 365 of 365 days1938: 365 of 365 days1939: 365 of 365 days1940: 366 of 366 days1941: 365 of 365 days1942: 365 of 365 days1943: 365 of 365 days1944: 366 of 366 days1945: 365 of 365 days1946: 365 of 365 days1947: 365 of 365 days1948: 366 of 366 days1949: 365 of 365 days1950: 365 of 365 days1951: 365 of 365 days1952: 366 of 366 days1953: 365 of 365 days1954: 365 of 365 days1955: 334 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 183 of 365 days2020: 67 of 366 days2021: 123 of 365 days2022: 155 of 365 days2023: 11 of 365 days2024: 5 of 366 days2025: 3 of 365 days1935195019651980199520102025
95 years of record at Biser, 1894 to 2025. 10 years have data for under 90 percent of days and are left out of rankings: 1894, 1926, 1933, 2019, 2020, 2021, 2022, 2023 and others.
Days with data per year at Biser
YearDays with dataShare of yearComplete
189441%No
1926308%No
19339225%No
1934365100%Yes
1935365100%Yes
1936366100%Yes
1937365100%Yes
1938365100%Yes
1939365100%Yes
1940366100%Yes
1941365100%Yes
1942365100%Yes
1943365100%Yes
1944366100%Yes
1945365100%Yes
1946365100%Yes
1947365100%Yes
1948366100%Yes
1949365100%Yes
1950365100%Yes
1951365100%Yes
1952366100%Yes
1953365100%Yes
1954365100%Yes
195533492%Yes
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
1990365100%Yes
1991365100%Yes
1992366100%Yes
1993365100%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
201918350%No
20206718%No
202112334%No
202215542%No
2023113%No
202451%No
202531%No

Latest Records

20
Latest records at Biser
DateStationRecordValueBeat old record byOld record stoodSignificance
15 March 2025Biser, RUdaily high min1.1 C (34.0 F)1.4 C (2.5 F)24 years19 of 100 (Routine)
14 March 2025Biser, RUdaily high min-0.3 C (31.5 F)0.5 C (0.9 F)24 years17 of 100 (Routine)
1 February 2025Biser, RUdaily high min-2.9 C (26.8 F)2.1 C (3.8 F)22 years18 of 100 (Routine)
10 January 2025Biser, RUdaily high min-4.6 C (23.7 F)0.2 C (0.4 F)42 years22 of 100 (Routine)
15 June 2024Biser, RUdaily high min16.9 C (62.4 F)0.2 C (0.4 F)131 years40 of 100 (Notable)
4 April 2024Biser, RUdaily high min4.2 C (39.6 F)2.3 C (4.1 F)2 years14 of 100 (Routine)
21 December 2023Biser, RUdaily high min-2.7 C (27.1 F)1.9 C (3.4 F)90 years39 of 100 (Notable)
10 November 2023Biser, RUdaily high min-0.1 C (31.8 F)0.3 C (0.5 F)9 years12 of 100 (Routine)
24 September 2023Biser, RUdaily high min11.6 C (52.9 F)1.2 C (2.2 F)52 years27 of 100 (Routine)
12 July 2023Biser, RUdaily low min0.0 C (32.0 F)0.7 C (1.3 F)108 years41 of 100 (Notable)
23 June 2023Biser, RUdaily low min1.6 C (34.9 F)0.4 C (0.7 F)89 years36 of 100 (Notable)
27 March 2023Biser, RUdaily high min2.3 C (36.1 F)1.1 C (2.0 F)14 years15 of 100 (Routine)
26 March 2023Biser, RUdaily high min (Tie)1.1 C (34.0 F)tie14 years3 of 100 (Routine)
10 March 2023Biser, RUdaily high min-1.1 C (30.0 F)1.1 C (2.0 F)8 years13 of 100 (Routine)
28 June 2022Biser, RUdaily low max10.5 C (50.9 F)0.9 C (1.6 F)20 years17 of 100 (Routine)
4 April 2022Biser, RUdaily high min1.9 C (35.4 F)0.2 C (0.4 F)75 years32 of 100 (Routine)
23 August 2021Biser, RUdaily high min18.1 C (64.6 F)2.6 C (4.7 F)16 years21 of 100 (Routine)
22 August 2021Biser, RUdaily high min16.0 C (60.8 F)1.2 C (2.2 F)107 years43 of 100 (Notable)
21 July 2021Biser, RUdaily rain30.0 mm (1.2 in)8.2 mm (0.32 in)23 years25 of 100 (Routine)
4 July 2021Biser, RUdaily rain82.0 mm (3.2 in)46.7 mm (1.8 in)78 years73 of 100 (Major)

Climate Trend

84 complete years, 1934 to 2018
Annual mean temperature at Biser as warming stripes, 1934 to 2018 One stripe for each of 84 complete years at Biser, 1934 to 2018. Blue stripes are years cooler than the station's own mean of -0.2 C (31.6 F); red stripes are warmer. The coolest year was 1969, at -3.2 C (26.3 F), and the warmest was 2008, at 1.9 C (35.4 F). The strongest colour marks a difference of 3.0 C (5.4 F). 1934: 0.2 C, +0.4 C from the station mean1935: 0.1 C, +0.3 C from the station mean1936: 0.5 C, +0.7 C from the station mean1937: -0.4 C, -0.2 C from the station mean1938: -0.1 C, +0.1 C from the station mean1939: -0.6 C, -0.4 C from the station mean1940: -1.5 C, -1.3 C from the station mean1941: -2.7 C, -2.5 C from the station mean1942: -1.4 C, -1.1 C from the station mean1943: -0.1 C, +0.1 C from the station mean1944: 0.4 C, +0.6 C from the station mean1945: -2.0 C, -1.7 C from the station mean1946: -1.0 C, -0.8 C from the station mean1947: -0.7 C, -0.5 C from the station mean1948: -0.2 C, +0.1 C from the station mean1949: -0.5 C, -0.2 C from the station mean1950: -1.0 C, -0.8 C from the station mean1951: 0.7 C, +0.9 C from the station mean1952: -0.2 C, 0.0 C from the station mean1953: -0.6 C, -0.4 C from the station mean1954: -0.5 C, -0.3 C from the station mean1956: -1.4 C, -1.2 C from the station mean1957: 0.5 C, +0.7 C from the station mean1958: -0.7 C, -0.5 C from the station mean1959: -0.3 C, -0.1 C from the station mean1960: -1.4 C, -1.2 C from the station mean1961: 0.5 C, +0.7 C from the station mean1962: 1.3 C, +1.5 C from the station mean1963: -0.5 C, -0.3 C from the station mean1964: -0.8 C, -0.6 C from the station mean1965: -0.4 C, -0.2 C from the station mean1966: -1.3 C, -1.1 C from the station mean1967: 1.4 C, +1.6 C from the station mean1968: -2.0 C, -1.8 C from the station mean1969: -3.2 C, -3.0 C from the station mean1970: -0.3 C, -0.1 C from the station mean1971: -0.7 C, -0.5 C from the station mean1972: -1.2 C, -1.0 C from the station mean1973: -0.1 C, +0.1 C from the station mean1974: 0.3 C, +0.5 C from the station mean1975: 0.9 C, +1.1 C from the station mean1976: -1.0 C, -0.8 C from the station mean1977: -0.3 C, 0.0 C from the station mean1978: -1.2 C, -1.0 C from the station mean1979: -1.1 C, -0.9 C from the station mean1980: -0.7 C, -0.5 C from the station mean1981: 1.5 C, +1.8 C from the station mean1982: -0.3 C, 0.0 C from the station mean1983: 1.3 C, +1.5 C from the station mean1984: -0.9 C, -0.7 C from the station mean1985: -0.7 C, -0.5 C from the station mean1986: -1.3 C, -1.1 C from the station mean1987: -0.7 C, -0.4 C from the station mean1988: 0.9 C, +1.1 C from the station mean1989: 0.6 C, +0.8 C from the station mean1990: 0.2 C, +0.4 C from the station mean1991: 0.8 C, +1.0 C from the station mean1992: -0.8 C, -0.5 C from the station mean1993: -0.8 C, -0.6 C from the station mean1994: -0.8 C, -0.6 C from the station mean1995: 1.8 C, +2.0 C from the station mean1996: -0.4 C, -0.2 C from the station mean1997: -0.9 C, -0.7 C from the station mean1998: -0.9 C, -0.7 C from the station mean1999: -0.4 C, -0.2 C from the station mean2000: 0.6 C, +0.8 C from the station mean2001: -0.3 C, -0.1 C from the station mean2002: -0.4 C, -0.2 C from the station mean2003: 1.2 C, +1.4 C from the station mean2004: 0.5 C, +0.7 C from the station mean2005: 1.7 C, +1.9 C from the station mean2006: -0.3 C, -0.1 C from the station mean2007: 1.0 C, +1.2 C from the station mean2008: 1.9 C, +2.1 C from the station mean2009: -0.1 C, +0.1 C from the station mean2010: 0.1 C, +0.3 C from the station mean2011: 0.5 C, +0.7 C from the station mean2012: 1.4 C, +1.6 C from the station mean2013: 0.6 C, +0.8 C from the station mean2014: -0.8 C, -0.5 C from the station mean2015: 0.5 C, +0.7 C from the station mean2016: 0.8 C, +1.0 C from the station mean2017: 0.4 C, +0.6 C from the station mean2018: -0.1 C, +0.1 C from the station mean193419401950196019701980199020002010
One stripe for each of 84 complete years at Biser, 1934 to 2018. Blue stripes are years cooler than the station's own mean of -0.2 C (31.6 F); red stripes are warmer. The coolest year was 1969, at -3.2 C (26.3 F), and the warmest was 2008, at 1.9 C (35.4 F). The strongest colour marks a difference of 3.0 C (5.4 F).
Annual mean temperature at Biser as warming stripes, 1934 to 2018
YearAnnual mean temperatureDifference from the station mean
19340.2 C+0.45 C
19350.1 C+0.32 C
19360.5 C+0.69 C
1937-0.4 C-0.18 C
1938-0.1 C+0.12 C
1939-0.6 C-0.40 C
1940-1.5 C-1.27 C
1941-2.7 C-2.45 C
1942-1.4 C-1.14 C
1943-0.1 C+0.13 C
19440.4 C+0.64 C
1945-2.0 C-1.74 C
1946-1.0 C-0.79 C
1947-0.7 C-0.49 C
1948-0.2 C+0.06 C
1949-0.5 C-0.24 C
1950-1.0 C-0.75 C
19510.7 C+0.87 C
1952-0.2 C-0.02 C
1953-0.6 C-0.39 C
1954-0.5 C-0.30 C
1956-1.4 C-1.23 C
19570.5 C+0.68 C
1958-0.7 C-0.53 C
1959-0.3 C-0.08 C
1960-1.4 C-1.23 C
19610.5 C+0.70 C
19621.3 C+1.51 C
1963-0.5 C-0.31 C
1964-0.8 C-0.60 C
1965-0.4 C-0.20 C
1966-1.3 C-1.06 C
19671.4 C+1.59 C
1968-2.0 C-1.79 C
1969-3.2 C-2.95 C
1970-0.3 C-0.12 C
1971-0.7 C-0.47 C
1972-1.2 C-1.02 C
1973-0.1 C+0.09 C
19740.3 C+0.51 C
19750.9 C+1.08 C
1976-1.0 C-0.82 C
1977-0.3 C-0.04 C
1978-1.2 C-0.97 C
1979-1.1 C-0.90 C
1980-0.7 C-0.48 C
19811.5 C+1.76 C
1982-0.3 C-0.04 C
19831.3 C+1.47 C
1984-0.9 C-0.65 C
1985-0.7 C-0.53 C
1986-1.3 C-1.06 C
1987-0.7 C-0.44 C
19880.9 C+1.13 C
19890.6 C+0.85 C
19900.2 C+0.39 C
19910.8 C+1.04 C
1992-0.8 C-0.54 C
1993-0.8 C-0.58 C
1994-0.8 C-0.56 C
19951.8 C+2.04 C
1996-0.4 C-0.19 C
1997-0.9 C-0.72 C
1998-0.9 C-0.73 C
1999-0.4 C-0.18 C
20000.6 C+0.77 C
2001-0.3 C-0.10 C
2002-0.4 C-0.18 C
20031.2 C+1.39 C
20040.5 C+0.70 C
20051.7 C+1.95 C
2006-0.3 C-0.12 C
20071.0 C+1.19 C
20081.9 C+2.09 C
2009-0.1 C+0.12 C
20100.1 C+0.31 C
20110.5 C+0.71 C
20121.4 C+1.61 C
20130.6 C+0.84 C
2014-0.8 C-0.54 C
20150.5 C+0.72 C
20160.8 C+1.03 C
20170.4 C+0.63 C
2018-0.1 C+0.11 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1934 to 2018. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 84 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Biser
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (0.1 to 0.2) per decade0.3 F (0.1 to 0.4) per decade1934 to 201884Rise
Mean daily maximum0.11 C (0.03 to 0.20) per decade0.2 F (0.1 to 0.4) per decade1934 to 201884Rise
Mean daily minimum0.2 C (0.1 to 0.2) per decade0.3 F (0.2 to 0.4) per decade1934 to 201884Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1888 to 2025
Yearly extremes at Biser: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)34.5 C (94.1 F)195829.7 C (85.5 F)95
Coldest night (TNn)-52.5 C (-62.5 F)1978-35.7 C (-32.2 F)130
Wettest day (Rx1day)131.7 mm (5.2 in)200732.0 mm (1.3 in)131
Wettest five days (Rx5day)181.8 mm (7.2 in)200759.7 mm (2.3 in)130
Longest dry spell (CDD)101 days188820 days130

Hottest day (TXx)

Hottest day (TXx) at Biser by year The hottest day of the year at Biser, 1888 to 2025. The record is 34.5 C (94.1 F) in 1958, marked on the chart; the median year is 29.7 C (85.5 F). -20020401900192019401960198020002020Record: 34.5 C (94.1 F) in 1958
The hottest day of the year at Biser, 1888 to 2025. The record is 34.5 C (94.1 F) in 1958, marked on the chart; the median year is 29.7 C (85.5 F).
Hottest day (TXx) at Biser by year
YearHottest day (TXx)
1888n/a
1889n/a
1890n/a
1891n/a
1892n/a
1893n/a
1894-7.7 C (18.1 F)
1895n/a
1896n/a
1897n/a
1898n/a
1899n/a
1900n/a
1901n/a
1902n/a
1903n/a
1904n/a
1905n/a
1906n/a
1907n/a
1908n/a
1909n/a
1910n/a
1911n/a
1912n/a
1913n/a
1914n/a
1915n/a
1916n/a
1917n/a
1918n/a
1919n/a
1925n/a
192613.8 C (56.8 F)
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
193315.0 C (59.0 F)
193429.4 C (84.9 F)
193528.6 C (83.5 F)
193633.4 C (92.1 F)
193730.4 C (86.7 F)
193831.1 C (88.0 F)
193929.4 C (84.9 F)
194032.9 C (91.2 F)
194127.3 C (81.1 F)
194229.5 C (85.1 F)
194329.1 C (84.4 F)
194430.9 C (87.6 F)
194529.8 C (85.6 F)
194628.8 C (83.8 F)
194731.2 C (88.2 F)
194830.2 C (86.4 F)
194931.2 C (88.2 F)
195026.0 C (78.8 F)
195131.4 C (88.5 F)
195232.4 C (90.3 F)
195332.3 C (90.1 F)
195432.4 C (90.3 F)
195531.5 C (88.7 F)
195632.6 C (90.7 F)
195731.3 C (88.3 F)
195834.5 C (94.1 F)
195929.6 C (85.3 F)
196030.1 C (86.2 F)
196127.9 C (82.2 F)
196232.4 C (90.3 F)
196332.6 C (90.7 F)
196430.7 C (87.3 F)
196530.5 C (86.9 F)
196629.4 C (84.9 F)
196728.4 C (83.1 F)
196828.2 C (82.8 F)
196925.9 C (78.6 F)
197028.6 C (83.5 F)
197131.1 C (88.0 F)
197229.4 C (84.9 F)
197330.0 C (86.0 F)
197429.6 C (85.3 F)
197532.1 C (89.8 F)
197629.0 C (84.2 F)
197727.8 C (82.0 F)
197825.5 C (77.9 F)
197927.1 C (80.8 F)
198027.4 C (81.3 F)
198130.0 C (86.0 F)
198230.2 C (86.4 F)
198328.4 C (83.1 F)
198429.6 C (85.3 F)
198529.8 C (85.6 F)
198627.5 C (81.5 F)
198731.5 C (88.7 F)
198830.4 C (86.7 F)
198930.5 C (86.9 F)
199028.3 C (82.9 F)
199130.7 C (87.3 F)
199226.9 C (80.4 F)
199327.0 C (80.6 F)
199426.3 C (79.3 F)
199530.5 C (86.9 F)
199627.9 C (82.2 F)
199727.3 C (81.1 F)
199830.9 C (87.6 F)
199928.8 C (83.8 F)
200030.0 C (86.0 F)
200130.3 C (86.5 F)
200229.7 C (85.5 F)
200330.6 C (87.1 F)
200431.2 C (88.2 F)
200530.3 C (86.5 F)
200631.3 C (88.3 F)
200729.5 C (85.1 F)
200830.4 C (86.7 F)
200929.2 C (84.6 F)
201033.2 C (91.8 F)
201129.5 C (85.1 F)
201232.1 C (89.8 F)
201330.2 C (86.4 F)
201427.9 C (82.2 F)
201532.0 C (89.6 F)
201632.6 C (90.7 F)
201727.6 C (81.7 F)
201829.9 C (85.8 F)
201927.4 C (81.3 F)
202017.5 C (63.5 F)
202129.4 C (84.9 F)
202229.6 C (85.3 F)
202327.5 C (81.5 F)
202421.1 C (70.0 F)
202524.6 C (76.3 F)

Coldest night (TNn)

Coldest night (TNn) at Biser by year The coldest night of the year at Biser, 1888 to 2025. The record is -52.5 C (-62.5 F) in 1978, marked on the chart; the median year is -35.7 C (-32.2 F). -60-50-40-30-201900192019401960198020002020Record: -52.5 C (-62.5 F) in 1978
The coldest night of the year at Biser, 1888 to 2025. The record is -52.5 C (-62.5 F) in 1978, marked on the chart; the median year is -35.7 C (-32.2 F).
Coldest night (TNn) at Biser by year
YearColdest night (TNn)
1888n/a
1889n/a
1890n/a
1891-33.6 C (-28.5 F)
1892-43.2 C (-45.8 F)
1893-40.9 C (-41.6 F)
1894-41.8 C (-43.2 F)
1895-36.4 C (-33.5 F)
1896-37.7 C (-35.9 F)
1897-35.1 C (-31.2 F)
1898-33.3 C (-27.9 F)
1899-34.1 C (-29.4 F)
1900-35.6 C (-32.1 F)
1901-42.4 C (-44.3 F)
1902-43.3 C (-45.9 F)
1903-35.6 C (-32.1 F)
1904-36.3 C (-33.3 F)
1905-36.7 C (-34.1 F)
1906-37.3 C (-35.1 F)
1907-39.1 C (-38.4 F)
1908-40.2 C (-40.4 F)
1909-24.4 C (-11.9 F)
1910-31.6 C (-24.9 F)
1911-33.7 C (-28.7 F)
1912-35.7 C (-32.3 F)
1913-32.9 C (-27.2 F)
1914-34.4 C (-29.9 F)
1915-38.0 C (-36.4 F)
1916-37.9 C (-36.2 F)
1917-35.5 C (-31.9 F)
1918-36.9 C (-34.4 F)
1919-35.9 C (-32.6 F)
1925-29.3 C (-20.7 F)
1926-34.0 C (-29.2 F)
1927-40.2 C (-40.4 F)
1928-35.0 C (-31.0 F)
1929-40.5 C (-40.9 F)
1930-38.5 C (-37.3 F)
1931-30.5 C (-22.9 F)
1932-44.0 C (-47.2 F)
1933-37.8 C (-36.0 F)
1934-32.8 C (-27.0 F)
1935-35.1 C (-31.2 F)
1936-33.0 C (-27.4 F)
1937-33.8 C (-28.8 F)
1938-35.8 C (-32.4 F)
1939-31.6 C (-24.9 F)
1940-43.7 C (-46.7 F)
1941-40.1 C (-40.2 F)
1942-39.3 C (-38.7 F)
1943-40.0 C (-40.0 F)
1944-27.1 C (-16.8 F)
1945-34.0 C (-29.2 F)
1946-35.1 C (-31.2 F)
1947-31.4 C (-24.5 F)
1948-37.7 C (-35.9 F)
1949-34.6 C (-30.3 F)
1950-40.3 C (-40.5 F)
1951-43.3 C (-45.9 F)
1952-31.8 C (-25.2 F)
1953-34.6 C (-30.3 F)
1954-36.5 C (-33.7 F)
1955-32.1 C (-25.8 F)
1956-40.2 C (-40.4 F)
1957-32.5 C (-26.5 F)
1958-45.7 C (-50.3 F)
1959-34.6 C (-30.3 F)
1960-34.3 C (-29.7 F)
1961-31.4 C (-24.5 F)
1962-32.5 C (-26.5 F)
1963-35.5 C (-31.9 F)
1964-41.5 C (-42.7 F)
1965-32.4 C (-26.3 F)
1966-39.6 C (-39.3 F)
1967-39.7 C (-39.5 F)
1968-40.6 C (-41.1 F)
1969-41.1 C (-42.0 F)
1970-39.8 C (-39.6 F)
1971-36.1 C (-33.0 F)
1972-37.4 C (-35.3 F)
1973-41.6 C (-42.9 F)
1974-37.2 C (-35.0 F)
1975-32.9 C (-27.2 F)
1976-40.4 C (-40.7 F)
1977-39.9 C (-39.8 F)
1978-52.5 C (-62.5 F)
1979-49.8 C (-57.6 F)
1980-40.6 C (-41.1 F)
1981-28.8 C (-19.8 F)
1982-37.5 C (-35.5 F)
1983-30.4 C (-22.7 F)
1984-38.1 C (-36.6 F)
1985-33.9 C (-29.0 F)
1986-42.3 C (-44.1 F)
1987-38.1 C (-36.6 F)
1988-31.9 C (-25.4 F)
1989-38.8 C (-37.8 F)
1990-35.2 C (-31.4 F)
1991-36.3 C (-33.3 F)
1992-30.7 C (-23.3 F)
1993-30.9 C (-23.6 F)
1994-35.2 C (-31.4 F)
1995-37.1 C (-34.8 F)
1996-33.2 C (-27.8 F)
1997-34.5 C (-30.1 F)
1998-36.4 C (-33.5 F)
1999-36.2 C (-33.2 F)
2000-33.1 C (-27.6 F)
2001-32.7 C (-26.9 F)
2002-37.3 C (-35.1 F)
2003-34.2 C (-29.6 F)
2004-30.1 C (-22.2 F)
2005-26.8 C (-16.2 F)
2006-39.5 C (-39.1 F)
2007-32.6 C (-26.7 F)
2008-31.1 C (-24.0 F)
2009-42.8 C (-45.0 F)
2010-34.3 C (-29.7 F)
2011-33.6 C (-28.5 F)
2012-29.7 C (-21.5 F)
2013-32.4 C (-26.3 F)
2014-38.4 C (-37.1 F)
2015-38.8 C (-37.8 F)
2016-36.3 C (-33.3 F)
2017-35.9 C (-32.6 F)
2018-31.1 C (-24.0 F)
2019-32.6 C (-26.7 F)
2020-30.6 C (-23.1 F)
2021-35.1 C (-31.2 F)
2022-29.2 C (-20.6 F)
2023-35.7 C (-32.3 F)
2024-33.8 C (-28.8 F)
2025-25.9 C (-14.6 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Biser by year The wettest day of the year at Biser, 1888 to 2025. The record is 131.7 mm (5.2 in) in 2007, marked on the chart; the median year is 32.0 mm (1.3 in). 0501001501900192019401960198020002020Record: 131.7 mm (5.2 in) in 2007
The wettest day of the year at Biser, 1888 to 2025. The record is 131.7 mm (5.2 in) in 2007, marked on the chart; the median year is 32.0 mm (1.3 in).
Wettest day (Rx1day) at Biser by year
YearWettest day (Rx1day)
188860.9 mm (2.4 in)
188949.8 mm (2.0 in)
189026.0 mm (1.0 in)
189134.9 mm (1.4 in)
189242.2 mm (1.7 in)
189323.3 mm (0.9 in)
189430.0 mm (1.2 in)
189528.1 mm (1.1 in)
189681.7 mm (3.2 in)
189723.7 mm (0.9 in)
189816.7 mm (0.7 in)
189923.2 mm (0.9 in)
190043.0 mm (1.7 in)
190124.9 mm (1.0 in)
190225.3 mm (1.0 in)
190325.5 mm (1.0 in)
190440.4 mm (1.6 in)
190530.5 mm (1.2 in)
190637.5 mm (1.5 in)
190740.0 mm (1.6 in)
190832.0 mm (1.3 in)
190927.1 mm (1.1 in)
191030.8 mm (1.2 in)
191152.5 mm (2.1 in)
191217.0 mm (0.7 in)
191329.0 mm (1.1 in)
191470.4 mm (2.8 in)
191517.5 mm (0.7 in)
191627.5 mm (1.1 in)
191730.0 mm (1.2 in)
191835.0 mm (1.4 in)
191911.0 mm (0.4 in)
192523.8 mm (0.9 in)
192636.7 mm (1.4 in)
192732.3 mm (1.3 in)
192825.6 mm (1.0 in)
192920.4 mm (0.8 in)
193048.0 mm (1.9 in)
193147.2 mm (1.9 in)
193233.0 mm (1.3 in)
193322.4 mm (0.9 in)
193428.9 mm (1.1 in)
193525.0 mm (1.0 in)
193617.3 mm (0.7 in)
193738.4 mm (1.5 in)
193823.3 mm (0.9 in)
193926.5 mm (1.0 in)
194024.2 mm (1.0 in)
194126.3 mm (1.0 in)
194245.0 mm (1.8 in)
194356.7 mm (2.2 in)
194449.7 mm (2.0 in)
194529.2 mm (1.1 in)
194638.5 mm (1.5 in)
194731.4 mm (1.2 in)
194828.6 mm (1.1 in)
194942.7 mm (1.7 in)
195051.7 mm (2.0 in)
195132.7 mm (1.3 in)
195233.9 mm (1.3 in)
195345.5 mm (1.8 in)
195420.5 mm (0.8 in)
195529.5 mm (1.2 in)
195634.9 mm (1.4 in)
195758.0 mm (2.3 in)
195827.7 mm (1.1 in)
195929.5 mm (1.2 in)
196023.2 mm (0.9 in)
196123.9 mm (0.9 in)
196228.4 mm (1.1 in)
196323.0 mm (0.9 in)
196437.0 mm (1.5 in)
196540.8 mm (1.6 in)
196632.9 mm (1.3 in)
196727.6 mm (1.1 in)
196826.1 mm (1.0 in)
196961.9 mm (2.4 in)
197029.0 mm (1.1 in)
197132.8 mm (1.3 in)
197236.4 mm (1.4 in)
197334.5 mm (1.4 in)
197426.3 mm (1.0 in)
197518.9 mm (0.7 in)
197649.3 mm (1.9 in)
197735.2 mm (1.4 in)
197829.5 mm (1.2 in)
197951.3 mm (2.0 in)
198036.8 mm (1.4 in)
198119.6 mm (0.8 in)
198215.7 mm (0.6 in)
198335.2 mm (1.4 in)
198447.1 mm (1.9 in)
198531.8 mm (1.3 in)
198638.6 mm (1.5 in)
198780.1 mm (3.2 in)
198829.2 mm (1.1 in)
198973.0 mm (2.9 in)
199051.4 mm (2.0 in)
199146.0 mm (1.8 in)
199229.1 mm (1.1 in)
199332.7 mm (1.3 in)
199438.1 mm (1.5 in)
199525.6 mm (1.0 in)
199624.2 mm (1.0 in)
199760.9 mm (2.4 in)
199830.4 mm (1.2 in)
199932.3 mm (1.3 in)
200028.0 mm (1.1 in)
200122.4 mm (0.9 in)
200246.1 mm (1.8 in)
200340.7 mm (1.6 in)
200435.7 mm (1.4 in)
200535.6 mm (1.4 in)
200629.2 mm (1.1 in)
2007131.7 mm (5.2 in)
200833.3 mm (1.3 in)
200950.0 mm (2.0 in)
201042.3 mm (1.7 in)
201125.2 mm (1.0 in)
201248.3 mm (1.9 in)
201348.5 mm (1.9 in)
201427.6 mm (1.1 in)
201538.8 mm (1.5 in)
201629.7 mm (1.2 in)
201736.0 mm (1.4 in)
201831.0 mm (1.2 in)
201923.1 mm (0.9 in)
202027.9 mm (1.1 in)
202182.0 mm (3.2 in)
202232.0 mm (1.3 in)
20232.0 mm (0.08 in)
2024n/a
2025n/a

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Biser by year The wettest five days of the year at Biser, 1888 to 2025. The record is 181.8 mm (7.2 in) in 2007, marked on the chart; the median year is 59.7 mm (2.3 in). 0501001502001900192019401960198020002020Record: 181.8 mm (7.2 in) in 2007
The wettest five days of the year at Biser, 1888 to 2025. The record is 181.8 mm (7.2 in) in 2007, marked on the chart; the median year is 59.7 mm (2.3 in).
Wettest five days (Rx5day) at Biser by year
YearWettest five days (Rx5day)
188894.8 mm (3.7 in)
188983.2 mm (3.3 in)
189053.3 mm (2.1 in)
189152.2 mm (2.1 in)
189257.2 mm (2.3 in)
189368.5 mm (2.7 in)
189457.0 mm (2.2 in)
189577.7 mm (3.1 in)
1896114.2 mm (4.5 in)
189741.6 mm (1.6 in)
189843.1 mm (1.7 in)
189942.0 mm (1.7 in)
190070.0 mm (2.8 in)
190155.4 mm (2.2 in)
190249.1 mm (1.9 in)
190337.7 mm (1.5 in)
190487.6 mm (3.4 in)
190569.0 mm (2.7 in)
190659.2 mm (2.3 in)
190767.0 mm (2.6 in)
190845.7 mm (1.8 in)
190940.0 mm (1.6 in)
191064.7 mm (2.5 in)
191161.9 mm (2.4 in)
191234.1 mm (1.3 in)
191348.1 mm (1.9 in)
191480.9 mm (3.2 in)
191536.5 mm (1.4 in)
191669.0 mm (2.7 in)
191737.5 mm (1.5 in)
191856.0 mm (2.2 in)
191928.5 mm (1.1 in)
192565.9 mm (2.6 in)
192679.6 mm (3.1 in)
192767.7 mm (2.7 in)
192854.4 mm (2.1 in)
192938.6 mm (1.5 in)
193076.3 mm (3.0 in)
193166.4 mm (2.6 in)
193252.4 mm (2.1 in)
193327.4 mm (1.1 in)
193441.2 mm (1.6 in)
193557.5 mm (2.3 in)
193637.6 mm (1.5 in)
193766.5 mm (2.6 in)
193858.3 mm (2.3 in)
193960.5 mm (2.4 in)
194048.8 mm (1.9 in)
194146.6 mm (1.8 in)
194274.9 mm (2.9 in)
194386.2 mm (3.4 in)
194487.2 mm (3.4 in)
194556.1 mm (2.2 in)
194652.6 mm (2.1 in)
194763.3 mm (2.5 in)
194854.2 mm (2.1 in)
194955.4 mm (2.2 in)
195089.0 mm (3.5 in)
195164.9 mm (2.6 in)
195285.4 mm (3.4 in)
195356.7 mm (2.2 in)
195455.8 mm (2.2 in)
195550.0 mm (2.0 in)
195648.3 mm (1.9 in)
195785.8 mm (3.4 in)
195849.2 mm (1.9 in)
195952.5 mm (2.1 in)
196039.1 mm (1.5 in)
196144.6 mm (1.8 in)
196264.0 mm (2.5 in)
196350.3 mm (2.0 in)
196466.3 mm (2.6 in)
196557.6 mm (2.3 in)
196657.2 mm (2.3 in)
196753.0 mm (2.1 in)
196855.4 mm (2.2 in)
196992.0 mm (3.6 in)
197059.7 mm (2.4 in)
197174.7 mm (2.9 in)
197264.6 mm (2.5 in)
197355.9 mm (2.2 in)
197442.2 mm (1.7 in)
197549.5 mm (1.9 in)
197659.6 mm (2.3 in)
197762.0 mm (2.4 in)
197855.7 mm (2.2 in)
1979110.4 mm (4.3 in)
198093.8 mm (3.7 in)
198146.9 mm (1.8 in)
198243.4 mm (1.7 in)
198356.6 mm (2.2 in)
198484.4 mm (3.3 in)
198558.6 mm (2.3 in)
198674.5 mm (2.9 in)
198798.7 mm (3.9 in)
198865.0 mm (2.6 in)
1989108.8 mm (4.3 in)
199070.9 mm (2.8 in)
199181.0 mm (3.2 in)
199262.2 mm (2.4 in)
199370.6 mm (2.8 in)
199479.5 mm (3.1 in)
199557.2 mm (2.3 in)
199651.8 mm (2.0 in)
199793.8 mm (3.7 in)
199853.6 mm (2.1 in)
199952.8 mm (2.1 in)
200061.3 mm (2.4 in)
200170.0 mm (2.8 in)
200272.3 mm (2.8 in)
200360.3 mm (2.4 in)
200463.2 mm (2.5 in)
200561.6 mm (2.4 in)
200643.2 mm (1.7 in)
2007181.8 mm (7.2 in)
200865.4 mm (2.6 in)
200966.4 mm (2.6 in)
201071.7 mm (2.8 in)
201153.9 mm (2.1 in)
201294.3 mm (3.7 in)
201397.1 mm (3.8 in)
201452.8 mm (2.1 in)
201567.5 mm (2.7 in)
201662.2 mm (2.4 in)
201770.9 mm (2.8 in)
201849.5 mm (1.9 in)
201930.7 mm (1.2 in)
202064.0 mm (2.5 in)
202131.0 mm (1.2 in)
202263.0 mm (2.5 in)
2023n/a
2024n/a
2025n/a

Longest dry spell (CDD)

Longest dry spell (CDD) at Biser by year The longest dry spell of the year at Biser, 1888 to 2025. The record is 101 days in 1888, marked on the chart; the median year is 20 days. 02550751001251900192019401960198020002020Record: 101 days in 1888
The longest dry spell of the year at Biser, 1888 to 2025. The record is 101 days in 1888, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Biser by year
YearLongest dry spell (CDD)
1888101 days
188921 days
189016 days
189134 days
189237 days
189322 days
189415 days
189520 days
189639 days
189726 days
189844 days
189919 days
190032 days
190123 days
190213 days
190320 days
190468 days
190519 days
190613 days
190719 days
190817 days
190922 days
191029 days
191121 days
191215 days
191318 days
19149 days
191513 days
191627 days
191721 days
191833 days
191915 days
19259 days
192621 days
192714 days
192820 days
192919 days
193020 days
193134 days
193213 days
193319 days
193426 days
193517 days
193616 days
193722 days
193821 days
193916 days
194016 days
194114 days
194227 days
194317 days
194426 days
194525 days
194627 days
194716 days
194813 days
194922 days
195022 days
195128 days
195224 days
195323 days
195431 days
195527 days
195633 days
195724 days
195835 days
195920 days
196043 days
196112 days
196220 days
196315 days
196419 days
196522 days
196623 days
196726 days
196817 days
196927 days
197033 days
197113 days
197223 days
197319 days
197428 days
197515 days
197630 days
19779 days
197813 days
197921 days
198020 days
198114 days
198217 days
198315 days
198435 days
198521 days
198615 days
198729 days
198819 days
198913 days
199010 days
199116 days
199216 days
199330 days
199419 days
199521 days
199625 days
199715 days
199819 days
199915 days
200013 days
200126 days
200236 days
200323 days
200415 days
200524 days
200615 days
200715 days
200816 days
200923 days
201021 days
201123 days
201226 days
201316 days
201414 days
201512 days
201618 days
201717 days
201821 days
201910 days
202010 days
202116 days
202211 days
2023n/a
2024n/a
2025n/a

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

84 years with a frost

Across 84 years with a frost, the median last spring frost at Biser falls on 3 June and the median first autumn frost on 3 September, which leaves a median of 92 days between them.

In 1989 to 2018 the median growing season was 97 days. That is 7 days more than in 1934 to 1964.

Fitted over all years, the growing season changes by +2.6 days per decade at this station.

Frost dates and growing season at Biser
MeasureMedian, all yearsEarliest period (1934 to 1964)Recent period (1989 to 2018)Recent against earliestFitted trend
Last spring frost3 June3 June1 June2 days earlier-1.0 days per decade
First autumn frost3 September30 August4 September5 days later+1.6 days per decade
Growing days92 days90 days97 days7 days more+2.6 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

118 years, 1889 to 2018

A day with at least 32.1 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 93.1 mm (3.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Biser: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years32.1 mm (1.3 in)
5 years44.0 mm (1.7 in)
10 years53.4 mm (2.1 in)
25 years67.3 mm (2.6 in)
50 years79.4 mm (3.1 in)
100 years93.1 mm (3.7 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 118 years of values from 1889 to 2018.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 131.7 mm (5.2 in) in 2007; 81.7 mm (3.2 in) in 1896; 80.1 mm (3.2 in) in 1987.

Station Changes

2 suspected

2 changes were suspected in the annual mean temperature of Biser, at 1978 and 1989. Each is measured against neighbouring stations.

  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1978 ran 0.2 C (0.4 F) lower than in the years before (likely change).
  • Relative to 5 neighbouring stations, the station's annual mean temperature from 1989 ran 0.2 C (0.4 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Biser, against neighbouring stations
YearShift (C)Shift (F)StrengthNeighbours
1978-0.2-0.4likely5
1989-0.2-0.4likely5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Climate Twins

2004 to 2018 against 1961 to 1990

Over 2004 to 2018, Biser had a mean temperature of 0.5 C (33.0 F) and 829.0 mm (32.6 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Cherdyn' (Russia, 247 km away), Tukan (Russia, 521 km away) and Koigorodok (Russia, 494 km away).

Climate twins of Biser: stations whose 1961 to 1990 climate is closest to its 2004 to 2018 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
Cherdyn'Russia247 km (153 mi)0.7 C (33.2 F)718.1 mm (28.3 in)0.80
TukanRussia521 km (324 mi)1.4 C (34.5 F)685.0 mm (27.0 in)1.11
KoigorodokRussia494 km (307 mi)0.7 C (33.3 F)580.2 mm (22.8 in)1.17

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Biser standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Biser threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).