Built 2026-10-19 (19 October 2026)

Holma Weather Records (SWE00138454)

Record envelope, standing records and threshold days for Holma (SWE00138454), Sweden, with 35 years of record.

Key Facts for Holma

  • Holma (SWE00138454) is a weather station in Sweden at 58.33 latitude and 16.82 longitude, 5 m (16 ft) above sea level.
  • The station reports from 1962 to 1996, 35 years of record.
  • 1,464 records set at Holma still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Holma set a daily record precipitation of 13.0 mm (0.5 in) on 18 November 1996.

About the Station

  • Location: Sweden, 58.33 latitude, 16.82 longitude.
  • Elevation: 5 m (16 ft).
  • Period of record: 1962 to 1996, 35 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 Holma, with 2026 drawn through them The band shows the record high and record low for each calendar day at Holma. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Holma. 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 Holma, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan11.0 C (51.8 F)-27.7 C (-17.9 F)n/an/a
Feb14.4 C (57.9 F)-28.1 C (-18.6 F)n/an/a
Mar21.0 C (69.8 F)-20.0 C (-4.0 F)n/an/a
Apr24.0 C (75.2 F)-10.0 C (14.0 F)n/an/a
May29.4 C (84.9 F)-2.3 C (27.9 F)n/an/a
Jun33.1 C (91.6 F)1.7 C (35.1 F)n/an/a
Jul32.6 C (90.7 F)4.3 C (39.7 F)n/an/a
Aug36.8 C (98.2 F)5.0 C (41.0 F)n/an/a
Sep27.8 C (82.0 F)-1.0 C (30.2 F)n/an/a
Oct22.5 C (72.5 F)-6.3 C (20.7 F)n/an/a
Nov14.0 C (57.2 F)-14.4 C (6.1 F)n/an/a
Dec11.4 C (52.5 F)-19.1 C (-2.4 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Holma by the year they were set 1,464 records at Holma still stand. 1989 holds the most, with 75. 0204060801962: 321963: 231964: 311965: 501966: 501967: 241968: 671969: 561970: 441971: 521972: 221973: 511974: 301975: 481976: 351977: 351978: 591979: 371980: 361981: 331982: 341983: 461984: 281985: 521986: 331987: 691988: 291989: 751990: 711991: 191992: 391993: 391994: 381995: 481996: 29196219661970197419781982198619901994
1,464 records at Holma still stand. 1989 holds the most, with 75.
Standing records at Holma by the year they were set
Year setStanding records
196232
196323
196431
196550
196650
196724
196867
196956
197044
197152
197222
197351
197430
197548
197635
197735
197859
197937
198036
198133
198234
198346
198428
198552
198633
198769
198829
198975
199071
199119
199239
199339
199438
199548
199629

All-Time Record Progression

1 new records
When Holma set new all-time records 1 all-time records were set at Holma between 28 July 1994 and 28 July 1994. Each dot is a new record. Record high minimum temperature28 July 1994: Record high minimum temperature 20.6 C (69.1 F)1995
1 all-time records were set at Holma between 28 July 1994 and 28 July 1994. Each dot is a new record.
When Holma set new all-time records
DateKindDetail
1994-07-28Record high minimum temperatureRecord high minimum temperature 20.6 C (69.1 F)

Wettest Day of Each Month

Jun: 55.6 mm (2.2 in)
Record daily precipitation for each month at Holma The wettest day on record for each calendar month at Holma. The most was 55.6 mm (2.2 in) on 7 June 1988. 0204060 Jan: 25.2 mm (1.0 in), 17 January 1968 Jan Feb: 21.6 mm (0.9 in), 20 February 1993 Feb Mar: 23.3 mm (0.9 in), 18 March 1974 Mar Apr: 28.0 mm (1.1 in), 29 April 1985 Apr May: 27.3 mm (1.1 in), 18 May 1972 May Jun: 55.6 mm (2.2 in), 7 June 1988 Jun Jul: 55.5 mm (2.2 in), 16 July 1995 Jul Aug: 38.1 mm (1.5 in), 18 August 1970 Aug Sep: 51.3 mm (2.0 in), 22 September 1967 Sep Oct: 37.0 mm (1.5 in), 17 October 1967 Oct Nov: 34.8 mm (1.4 in), 6 November 1971 Nov Dec: 31.3 mm (1.2 in), 3 December 1976 Dec
The wettest day on record for each calendar month at Holma. The most was 55.6 mm (2.2 in) on 7 June 1988.
Record daily precipitation for each month at Holma
MonthRecord daily precipitation (mm)Date
Jan25.2 mm (1.0 in)17 January 1968
Feb21.6 mm (0.9 in)20 February 1993
Mar23.3 mm (0.9 in)18 March 1974
Apr28.0 mm (1.1 in)29 April 1985
May27.3 mm (1.1 in)18 May 1972
Jun55.6 mm (2.2 in)7 June 1988
Jul55.5 mm (2.2 in)16 July 1995
Aug38.1 mm (1.5 in)18 August 1970
Sep51.3 mm (2.0 in)22 September 1967
Oct37.0 mm (1.5 in)17 October 1967
Nov34.8 mm (1.4 in)6 November 1971
Dec31.3 mm (1.2 in)3 December 1976

Period of Record Coverage

1962 to 1996
Days with data per year at Holma 35 years of record at Holma, 1962 to 1996. 1 years have data for under 90 percent of days and are left out of rankings: 1962. 1962: 245 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: 335 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: 335 of 366 days1965197019751980198519901995
35 years of record at Holma, 1962 to 1996. 1 years have data for under 90 percent of days and are left out of rankings: 1962.
Days with data per year at Holma
YearDays with dataShare of yearComplete
196224567%No
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
198333592%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
199633592%Yes

Latest Records

20
Latest records at Holma
DateStationRecordValueBeat old record byOld record stoodSignificance
18 November 1996Holma, SEdaily rain13.0 mm (0.5 in)4.2 mm (0.17 in)8 years14 of 100 (Routine)
5 November 1996Holma, SEdaily high min9.1 C (48.4 F)1.7 C (3.1 F)34 years17 of 100 (Routine)
5 November 1996Holma, SEdaily high max (Tie)11.5 C (52.7 F)tie18 years2 of 100 (Routine)
4 November 1996Holma, SEdaily high max13.0 C (55.4 F)1.2 C (2.2 F)24 years13 of 100 (Routine)
4 November 1996Holma, SEdaily high min9.0 C (48.2 F)2.2 C (4.0 F)18 years13 of 100 (Routine)
3 November 1996Holma, SEdaily high min9.4 C (48.9 F)0.4 C (0.7 F)25 years11 of 100 (Routine)
2 November 1996Holma, SEmonthly high max (Tie)14.0 C (57.2 F)tie25 years5 of 100 (Routine)
8 October 1996Holma, SEdaily high min11.5 C (52.7 F)0.6 C (1.1 F)26 years11 of 100 (Routine)
12 September 1996Holma, SEdaily rain42.0 mm (1.7 in)13.1 mm (0.5 in)34 years31 of 100 (Routine)
10 September 1996Holma, SEdaily low max10.0 C (50.0 F)3.0 C (5.4 F)29 years20 of 100 (Routine)
10 September 1996Holma, SEdaily low min4.0 C (39.2 F)0.4 C (0.7 F)30 years13 of 100 (Routine)
29 August 1996Holma, SEdaily high min17.5 C (63.5 F)1.2 C (2.2 F)28 years15 of 100 (Routine)
25 August 1996Holma, SEdaily rain30.5 mm (1.2 in)19.3 mm (0.8 in)17 years40 of 100 (Notable)
25 August 1996Holma, SEdaily high min17.3 C (63.1 F)2.6 C (4.7 F)31 years22 of 100 (Routine)
24 August 1996Holma, SEdaily high min19.5 C (67.1 F)3.0 C (5.4 F)1 year14 of 100 (Routine)
22 August 1996Holma, SEdaily high min15.0 C (59.0 F)0.1 C (0.2 F)12 years6 of 100 (Routine)
20 August 1996Holma, SEdaily high max27.5 C (81.5 F)1.8 C (3.2 F)31 years17 of 100 (Routine)
14 August 1996Holma, SEdaily high min18.5 C (65.3 F)1.9 C (3.4 F)15 years14 of 100 (Routine)
13 August 1996Holma, SEdaily high min16.8 C (62.2 F)1.0 C (1.8 F)14 years10 of 100 (Routine)
31 July 1996Holma, SEdaily low min8.5 C (47.3 F)1.2 C (2.2 F)34 years18 of 100 (Routine)

Climate Trend

32 complete years, 1963 to 1995
Annual mean temperature at Holma as warming stripes, 1963 to 1995 One stripe for each of 32 complete years at Holma, 1963 to 1995. Blue stripes are years cooler than the station's own mean of 6.8 C (44.2 F); red stripes are warmer. The coolest year was 1985, at 4.6 C (40.2 F), and the warmest was 1990, at 8.8 C (47.9 F). The strongest colour marks a difference of 2.3 C (4.1 F). 1963: 5.7 C, -1.0 C from the station mean1964: 6.8 C, 0.0 C from the station mean1965: 5.8 C, -1.0 C from the station mean1966: 5.6 C, -1.1 C from the station mean1967: 7.2 C, +0.4 C from the station mean1968: 6.8 C, +0.1 C from the station mean1969: 6.2 C, -0.5 C from the station mean1970: 5.3 C, -1.4 C from the station mean1971: 7.0 C, +0.2 C from the station mean1972: 7.6 C, +0.8 C from the station mean1973: 7.4 C, +0.7 C from the station mean1974: 7.6 C, +0.8 C from the station mean1975: 8.5 C, +1.7 C from the station mean1976: 6.5 C, -0.3 C from the station mean1977: 6.6 C, -0.2 C from the station mean1978: 6.3 C, -0.4 C from the station mean1979: 5.9 C, -0.9 C from the station mean1980: 6.0 C, -0.8 C from the station mean1981: 6.1 C, -0.7 C from the station mean1982: 7.0 C, +0.3 C from the station mean1984: 7.3 C, +0.6 C from the station mean1985: 4.6 C, -2.2 C from the station mean1986: 6.0 C, -0.7 C from the station mean1987: 5.1 C, -1.7 C from the station mean1988: 6.9 C, +0.2 C from the station mean1989: 8.5 C, +1.7 C from the station mean1990: 8.8 C, +2.1 C from the station mean1991: 7.5 C, +0.7 C from the station mean1992: 8.0 C, +1.2 C from the station mean1993: 7.1 C, +0.3 C from the station mean1994: 7.5 C, +0.7 C from the station mean1995: 7.1 C, +0.3 C from the station mean1963197019751980198519901995
One stripe for each of 32 complete years at Holma, 1963 to 1995. Blue stripes are years cooler than the station's own mean of 6.8 C (44.2 F); red stripes are warmer. The coolest year was 1985, at 4.6 C (40.2 F), and the warmest was 1990, at 8.8 C (47.9 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Holma as warming stripes, 1963 to 1995
YearAnnual mean temperatureDifference from the station mean
19635.7 C-1.02 C
19646.8 C+0.03 C
19655.8 C-0.95 C
19665.6 C-1.14 C
19677.2 C+0.43 C
19686.8 C+0.08 C
19696.2 C-0.52 C
19705.3 C-1.43 C
19717.0 C+0.25 C
19727.6 C+0.80 C
19737.4 C+0.69 C
19747.6 C+0.84 C
19758.5 C+1.73 C
19766.5 C-0.30 C
19776.6 C-0.19 C
19786.3 C-0.43 C
19795.9 C-0.87 C
19806.0 C-0.79 C
19816.1 C-0.66 C
19827.0 C+0.29 C
19847.3 C+0.57 C
19854.6 C-2.20 C
19866.0 C-0.71 C
19875.1 C-1.67 C
19886.9 C+0.19 C
19898.5 C+1.73 C
19908.8 C+2.06 C
19917.5 C+0.72 C
19928.0 C+1.22 C
19937.1 C+0.31 C
19947.5 C+0.71 C
19957.1 C+0.35 C

The fitted trend in annual mean temperature here over 1963 to 1995 is 0.3 C (-0.1 to 0.7) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.6 F (-0.1 to 1.2) per decade. The slope is a straight line fitted to 32 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Holma
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (-0.1 to 0.7) per decade0.6 F (-0.1 to 1.2) per decade1963 to 199532Not clearly different from zero
Mean daily maximum0.2 C (-0.2 to 0.6) per decade0.3 F (-0.3 to 1.0) per decade1963 to 199532Not clearly different from zero
Mean daily minimum0.4 C (0.1 to 0.8) per decade0.8 F (0.1 to 1.5) per decade1963 to 199532Rise

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

1962 to 1996
Yearly extremes at Holma: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)36.8 C (98.2 F)197529.4 C (84.9 F)35
Coldest night (TNn)-28.1 C (-18.6 F)1966-18.2 C (-0.8 F)35
Wettest day (Rx1day)55.6 mm (2.2 in)198833.7 mm (1.3 in)35
Wettest five days (Rx5day)97.3 mm (3.8 in)199356.6 mm (2.2 in)35
Longest dry spell (CDD)55 days196422 days35

Hottest day (TXx)

Hottest day (TXx) at Holma by year The hottest day of the year at Holma, 1962 to 1996. The record is 36.8 C (98.2 F) in 1975, marked on the chart; the median year is 29.4 C (84.9 F). 25303540197019801990Record: 36.8 C (98.2 F) in 1975
The hottest day of the year at Holma, 1962 to 1996. The record is 36.8 C (98.2 F) in 1975, marked on the chart; the median year is 29.4 C (84.9 F).
Hottest day (TXx) at Holma by year
YearHottest day (TXx)
196228.2 C (82.8 F)
196330.0 C (86.0 F)
196429.5 C (85.1 F)
196525.7 C (78.3 F)
196628.2 C (82.8 F)
196727.3 C (81.1 F)
196828.8 C (83.8 F)
196930.9 C (87.6 F)
197033.1 C (91.6 F)
197129.0 C (84.2 F)
197230.9 C (87.6 F)
197330.0 C (86.0 F)
197427.0 C (80.6 F)
197536.8 C (98.2 F)
197631.6 C (88.9 F)
197726.5 C (79.7 F)
197829.4 C (84.9 F)
197930.1 C (86.2 F)
198026.5 C (79.7 F)
198127.1 C (80.8 F)
198232.1 C (89.8 F)
198332.6 C (90.7 F)
198427.4 C (81.3 F)
198525.8 C (78.4 F)
198630.2 C (86.4 F)
198726.5 C (79.7 F)
198827.0 C (80.6 F)
198931.5 C (88.7 F)
199029.6 C (85.3 F)
199131.5 C (88.7 F)
199227.7 C (81.9 F)
199327.4 C (81.3 F)
199432.4 C (90.3 F)
199530.2 C (86.4 F)
199628.2 C (82.8 F)

Coldest night (TNn)

Coldest night (TNn) at Holma by year The coldest night of the year at Holma, 1962 to 1996. The record is -28.1 C (-18.6 F) in 1966, marked on the chart; the median year is -18.2 C (-0.8 F). -30-25-20-15-10-5197019801990Record: -28.1 C (-18.6 F) in 1966
The coldest night of the year at Holma, 1962 to 1996. The record is -28.1 C (-18.6 F) in 1966, marked on the chart; the median year is -18.2 C (-0.8 F).
Coldest night (TNn) at Holma by year
YearColdest night (TNn)
1962-17.5 C (0.5 F)
1963-22.2 C (-8.0 F)
1964-18.5 C (-1.3 F)
1965-17.6 C (0.3 F)
1966-28.1 C (-18.6 F)
1967-16.1 C (3.0 F)
1968-19.5 C (-3.1 F)
1969-21.1 C (-6.0 F)
1970-24.4 C (-11.9 F)
1971-16.2 C (2.8 F)
1972-13.1 C (8.4 F)
1973-14.3 C (6.3 F)
1974-12.1 C (10.2 F)
1975-13.1 C (8.4 F)
1976-19.1 C (-2.4 F)
1977-18.5 C (-1.3 F)
1978-22.8 C (-9.0 F)
1979-27.7 C (-17.9 F)
1980-20.8 C (-5.4 F)
1981-18.7 C (-1.7 F)
1982-21.4 C (-6.5 F)
1983-15.0 C (5.0 F)
1984-15.7 C (3.7 F)
1985-24.3 C (-11.7 F)
1986-20.2 C (-4.4 F)
1987-25.0 C (-13.0 F)
1988-16.2 C (2.8 F)
1989-18.0 C (-0.4 F)
1990-8.6 C (16.5 F)
1991-12.5 C (9.5 F)
1992-8.8 C (16.2 F)
1993-11.3 C (11.7 F)
1994-18.2 C (-0.8 F)
1995-18.0 C (-0.4 F)
1996-22.0 C (-7.6 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Holma by year The wettest day of the year at Holma, 1962 to 1996. The record is 55.6 mm (2.2 in) in 1988, marked on the chart; the median year is 33.7 mm (1.3 in). 102030405060197019801990Record: 55.6 mm (2.2 in) in 1988
The wettest day of the year at Holma, 1962 to 1996. The record is 55.6 mm (2.2 in) in 1988, marked on the chart; the median year is 33.7 mm (1.3 in).
Wettest day (Rx1day) at Holma by year
YearWettest day (Rx1day)
196228.9 mm (1.1 in)
196324.0 mm (0.9 in)
196439.0 mm (1.5 in)
196526.5 mm (1.0 in)
196639.3 mm (1.5 in)
196751.3 mm (2.0 in)
196825.2 mm (1.0 in)
196926.3 mm (1.0 in)
197038.1 mm (1.5 in)
197134.8 mm (1.4 in)
197246.6 mm (1.8 in)
197349.0 mm (1.9 in)
197432.6 mm (1.3 in)
197519.0 mm (0.7 in)
197631.3 mm (1.2 in)
197736.2 mm (1.4 in)
197835.5 mm (1.4 in)
197927.7 mm (1.1 in)
198023.8 mm (0.9 in)
198121.3 mm (0.8 in)
198230.0 mm (1.2 in)
198343.5 mm (1.7 in)
198417.2 mm (0.7 in)
198550.5 mm (2.0 in)
198623.4 mm (0.9 in)
198726.0 mm (1.0 in)
198855.6 mm (2.2 in)
198918.0 mm (0.7 in)
199033.7 mm (1.3 in)
199134.8 mm (1.4 in)
199230.0 mm (1.2 in)
199339.0 mm (1.5 in)
199444.9 mm (1.8 in)
199555.5 mm (2.2 in)
199645.0 mm (1.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Holma by year The wettest five days of the year at Holma, 1962 to 1996. The record is 97.3 mm (3.8 in) in 1993, marked on the chart; the median year is 56.6 mm (2.2 in). 20406080100197019801990Record: 97.3 mm (3.8 in) in 1993
The wettest five days of the year at Holma, 1962 to 1996. The record is 97.3 mm (3.8 in) in 1993, marked on the chart; the median year is 56.6 mm (2.2 in).
Wettest five days (Rx5day) at Holma by year
YearWettest five days (Rx5day)
196239.5 mm (1.6 in)
196366.2 mm (2.6 in)
196447.3 mm (1.9 in)
196558.8 mm (2.3 in)
196640.6 mm (1.6 in)
196771.3 mm (2.8 in)
196848.6 mm (1.9 in)
196941.5 mm (1.6 in)
197053.3 mm (2.1 in)
197160.5 mm (2.4 in)
197256.6 mm (2.2 in)
197384.6 mm (3.3 in)
197464.3 mm (2.5 in)
197527.6 mm (1.1 in)
197657.8 mm (2.3 in)
197757.1 mm (2.2 in)
197893.1 mm (3.7 in)
197950.0 mm (2.0 in)
198065.5 mm (2.6 in)
198144.2 mm (1.7 in)
198248.4 mm (1.9 in)
198361.4 mm (2.4 in)
198446.3 mm (1.8 in)
198574.6 mm (2.9 in)
198638.6 mm (1.5 in)
198745.3 mm (1.8 in)
198862.9 mm (2.5 in)
198939.1 mm (1.5 in)
199050.4 mm (2.0 in)
199152.2 mm (2.1 in)
199247.5 mm (1.9 in)
199397.3 mm (3.8 in)
199476.1 mm (3.0 in)
199568.9 mm (2.7 in)
199657.5 mm (2.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Holma by year The longest dry spell of the year at Holma, 1962 to 1996. The record is 55 days in 1964, marked on the chart; the median year is 22 days. 0204060197019801990Record: 55 days in 1964
The longest dry spell of the year at Holma, 1962 to 1996. The record is 55 days in 1964, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Holma by year
YearLongest dry spell (CDD)
196235 days
196316 days
196455 days
196526 days
196616 days
196714 days
196818 days
196934 days
197017 days
197137 days
197226 days
197326 days
197434 days
197522 days
197622 days
197715 days
197820 days
197921 days
198018 days
198126 days
198218 days
198328 days
198434 days
198522 days
198621 days
198728 days
198815 days
198942 days
199020 days
199126 days
199231 days
199325 days
199422 days
199519 days
199624 days

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

32 years with a frost

Across 32 years with a frost, the median last spring frost at Holma falls on 2 May and the median first autumn frost on 17 October, which leaves a median of 167 days between them.

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

Frost dates and growing season at Holma
MeasureMedian, all yearsEarliest periodRecent period (1965 to 1995)Recent against earliestFitted trend
Last spring frost2 Mayn/a2 Mayn/a-2.2 days per decade
First autumn frost17 Octobern/a17 Octobern/a+0.4 days per decade
Growing days167 daysn/a167 daysn/a+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

34 years, 1963 to 1996

A day with at least 33.6 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 64.4 mm (2.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Holma: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years33.6 mm (1.3 in)
5 years43.7 mm (1.7 in)
10 years49.6 mm (2.0 in)
25 years56.1 mm (2.2 in)
50 years60.5 mm (2.4 in)Longer than the 34 years of record
100 years64.4 mm (2.5 in)Longer than the 34 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 34 years of values from 1963 to 1996.

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: 55.6 mm (2.2 in) in 1988; 55.5 mm (2.2 in) in 1995; 51.3 mm (2.0 in) in 1967.

Download the Data

  • Data for Holma standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Holma 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

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