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Iola 1 W Weather Records (USC00143984)

Record envelope, standing records and threshold days for Iola 1 W (USC00143984), Kansas, United States, with 123 years of record.

Key Facts for Iola 1 W

  • Iola 1 W (USC00143984) is a weather station in Kansas, United States at 37.92 latitude and -95.42 longitude, 291 m (954 ft) above sea level.
  • The station reports from 1904 to 2026, 123 years of record.
  • 1,464 records set at Iola 1 W still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Iola 1 W set a daily record high maximum temperature of 35.0 C (95.0 F) on 18 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Kansas, United States, 37.92 latitude, -95.42 longitude.
  • Elevation: 291 m (954 ft).
  • Period of record: 1904 to 2026, 123 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

14 days at or beyond a record
Daily record high and record low at Iola 1 W, with 2026 drawn through them The band shows the record high and record low for each calendar day at Iola 1 W. The lines show the 2026 daily maximum and minimum. 14 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Iola 1 W. The lines show the 2026 daily maximum and minimum. 14 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Iola 1 W, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan23.3 C (73.9 F)-26.7 C (-16.1 F)19.4 C (66.9 F)-20.0 C (-4.0 F)
Feb28.9 C (84.0 F)-31.1 C (-24.0 F)25.0 C (77.0 F)-18.9 C (-2.0 F)
Mar33.9 C (93.0 F)-18.3 C (-0.9 F)33.9 C (93.0 F)-11.7 C (10.9 F)
Apr35.0 C (95.0 F)-7.2 C (19.0 F)28.3 C (82.9 F)2.8 C (37.0 F)
May35.6 C (96.1 F)-2.2 C (28.0 F)30.0 C (86.0 F)4.4 C (39.9 F)
Jun41.1 C (106.0 F)7.2 C (45.0 F)32.2 C (90.0 F)14.4 C (57.9 F)
Jul42.8 C (109.0 F)10.0 C (50.0 F)36.1 C (97.0 F)17.8 C (64.0 F)
Aug42.2 C (108.0 F)7.2 C (45.0 F)38.3 C (100.9 F)12.8 C (55.0 F)
Sep40.6 C (105.1 F)-1.1 C (30.0 F)37.2 C (99.0 F)13.9 C (57.0 F)
Oct35.6 C (96.1 F)-7.8 C (18.0 F)31.1 C (88.0 F)7.8 C (46.0 F)
Nov28.3 C (82.9 F)-16.1 C (3.0 F)n/an/a
Dec25.6 C (78.1 F)-28.3 C (-18.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Iola 1 W by the year they were set 1,464 records at Iola 1 W still stand. 1980 holds the most, with 61. 0204060801959: 271960: 291961: 201962: 311963: 421964: 291965: 321966: 291967: 231968: 191969: 121970: 251971: 121972: 191973: 111974: 221975: 181976: 261977: 51978: 221979: 231980: 611981: 211982: 91983: 271984: 181985: 261986: 201987: 171988: 211989: 341990: 211991: 231992: 91993: 121994: 141995: 181996: 251997: 181998: 191999: 152000: 312001: 102002: 142003: 152004: 192005: 132006: 252007: 252008: 142009: 312010: 132011: 332012: 352013: 222014: 342015: 122016: 142017: 152018: 232019: 122020: 212021: 302022: 272023: 132024: 212025: 212026: 171959196619731980198719942001200820152022
1,464 records at Iola 1 W still stand. 1980 holds the most, with 61.
Standing records at Iola 1 W by the year they were set
Year setStanding records
195927
196029
196120
196231
196342
196429
196532
196629
196723
196819
196912
197025
197112
197219
197311
197422
197518
197626
19775
197822
197923
198061
198121
19829
198327
198418
198526
198620
198717
198821
198934
199021
199123
19929
199312
199414
199518
199625
199718
199819
199915
200031
200110
200214
200315
200419
200513
200625
200725
200814
200931
201013
201133
201235
201322
201434
201512
201614
201715
201823
201912
202021
202130
202227
202313
202421
202521
202617

All-Time Record Progression

5 new records
When Iola 1 W set new all-time records 5 all-time records were set at Iola 1 W between 9 February 2011 and 23 December 2022. Each dot is a new record. Record snow depthRecord low minimum temperatureRecord daily precipitationRecord low maximum temperature9 February 2011: Record snow depth 35.6 cm (14.0 in)10 February 2011: Record snow depth 38.1 cm (15.0 in)10 February 2011: Record low minimum temperature -31.1 C (-24.0 F)4 September 2021: Record daily precipitation 205.7 mm (8.1 in)23 December 2022: Record low maximum temperature -18.3 C (-0.9 F)20152020
5 all-time records were set at Iola 1 W between 9 February 2011 and 23 December 2022. Each dot is a new record.
When Iola 1 W set new all-time records
DateKindDetail
2011-02-09Record snow depthRecord snow depth 35.6 cm (14.0 in)
2011-02-10Record snow depthRecord snow depth 38.1 cm (15.0 in)
2011-02-10Record low minimum temperatureRecord low minimum temperature -31.1 C (-24.0 F)
2021-09-04Record daily precipitationRecord daily precipitation 205.7 mm (8.1 in)
2022-12-23Record low maximum temperatureRecord low maximum temperature -18.3 C (-0.9 F)

Wettest Day of Each Month

Sep: 205.7 mm (8.1 in)
Record daily precipitation for each month at Iola 1 W The wettest day on record for each calendar month at Iola 1 W. The most was 205.7 mm (8.1 in) on 4 September 2021. 0100200300 Jan: 60.5 mm (2.4 in), 3 January 1971 Jan Feb: 101.6 mm (4.0 in), 20 February 1997 Feb Mar: 83.1 mm (3.3 in), 14 March 1922 Mar Apr: 146.1 mm (5.8 in), 28 April 1994 Apr May: 122.9 mm (4.8 in), 26 May 1990 May Jun: 158.8 mm (6.3 in), 30 June 2007 Jun Jul: 129.5 mm (5.1 in), 1 July 2007 Jul Aug: 144.8 mm (5.7 in), 22 August 1985 Aug Sep: 205.7 mm (8.1 in), 4 September 2021 Sep Oct: 141.0 mm (5.6 in), 3 October 1986 Oct Nov: 139.4 mm (5.5 in), 17 November 1928 Nov Dec: 60.5 mm (2.4 in), 15 December 1975 Dec
The wettest day on record for each calendar month at Iola 1 W. The most was 205.7 mm (8.1 in) on 4 September 2021.
Record daily precipitation for each month at Iola 1 W
MonthRecord daily precipitation (mm)Date
Jan60.5 mm (2.4 in)3 January 1971
Feb101.6 mm (4.0 in)20 February 1997
Mar83.1 mm (3.3 in)14 March 1922
Apr146.1 mm (5.8 in)28 April 1994
May122.9 mm (4.8 in)26 May 1990
Jun158.8 mm (6.3 in)30 June 2007
Jul129.5 mm (5.1 in)1 July 2007
Aug144.8 mm (5.7 in)22 August 1985
Sep205.7 mm (8.1 in)4 September 2021
Oct141.0 mm (5.6 in)3 October 1986
Nov139.4 mm (5.5 in)17 November 1928
Dec60.5 mm (2.4 in)15 December 1975

Period of Record Coverage

1959 to 2026
Days with data per year at Iola 1 W 68 years of record at Iola 1 W, 1959 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1982, 2026. 1959: 365 of 365 days1960: 366 of 366 days1961: 362 of 365 days1962: 365 of 365 days1963: 364 of 365 days1964: 365 of 366 days1965: 365 of 365 days1966: 364 of 365 days1967: 363 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 347 of 365 days1971: 365 of 365 days1972: 362 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 363 of 365 days1976: 364 of 366 days1977: 363 of 365 days1978: 364 of 365 days1979: 365 of 365 days1980: 364 of 366 days1981: 365 of 365 days1982: 326 of 365 days1983: 355 of 365 days1984: 363 of 366 days1985: 360 of 365 days1986: 362 of 365 days1987: 342 of 365 days1988: 365 of 366 days1989: 364 of 365 days1990: 364 of 365 days1991: 362 of 365 days1992: 363 of 366 days1993: 355 of 365 days1994: 360 of 365 days1995: 350 of 365 days1996: 365 of 366 days1997: 362 of 365 days1998: 357 of 365 days1999: 364 of 365 days2000: 363 of 366 days2001: 364 of 365 days2002: 364 of 365 days2003: 363 of 365 days2004: 364 of 366 days2005: 363 of 365 days2006: 364 of 365 days2007: 357 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 364 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: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 365 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 282 of 365 days1960197019801990200020102020
68 years of record at Iola 1 W, 1959 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1982, 2026.
Days with data per year at Iola 1 W
YearDays with dataShare of yearComplete
1959365100%Yes
1960366100%Yes
196136299%Yes
1962365100%Yes
1963364100%Yes
1964365100%Yes
1965365100%Yes
1966364100%Yes
196736399%Yes
1968366100%Yes
1969365100%Yes
197034795%Yes
1971365100%Yes
197236299%Yes
1973365100%Yes
1974365100%Yes
197536399%Yes
197636499%Yes
197736399%Yes
1978364100%Yes
1979365100%Yes
198036499%Yes
1981365100%Yes
198232689%No
198335597%Yes
198436399%Yes
198536099%Yes
198636299%Yes
198734294%Yes
1988365100%Yes
1989364100%Yes
1990364100%Yes
199136299%Yes
199236399%Yes
199335597%Yes
199436099%Yes
199535096%Yes
1996365100%Yes
199736299%Yes
199835798%Yes
1999364100%Yes
200036399%Yes
2001364100%Yes
2002364100%Yes
200336399%Yes
200436499%Yes
200536399%Yes
2006364100%Yes
200735798%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011364100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022365100%Yes
2023365100%Yes
2024366100%Yes
2025365100%Yes
202628277%No

Latest Records

20
Latest records at Iola 1 W
DateStationRecordValueBeat old record byOld record stoodSignificance
18 September 2026Iola 1 W, USdaily high max (Provisional)35.0 C (95.0 F)1.7 C (3.1 F)65 years28 of 100 (Routine)
18 September 2026Iola 1 W, USdaily high min (Provisional)23.3 C (73.9 F)1.1 C (2.0 F)53 years24 of 100 (Routine)
17 September 2026Iola 1 W, USdaily high max (Provisional)34.4 C (93.9 F)1.1 C (2.0 F)48 years22 of 100 (Routine)
15 September 2026Iola 1 W, USdaily high min (Provisional)22.8 C (73.0 F)1.1 C (2.0 F)32 years17 of 100 (Routine)
9 September 2026Iola 1 W, USdaily high max (Provisional)37.2 C (99.0 F)1.1 C (2.0 F)36 years18 of 100 (Routine)
9 September 2026Iola 1 W, USmonthly high min (Tie, Provisional)25.0 C (77.0 F)tie56 years8 of 100 (Routine)
6 September 2026Iola 1 W, USdaily high max (Tie, Provisional)37.2 C (99.0 F)tie45 years4 of 100 (Routine)
4 September 2026Iola 1 W, USdaily high min (Tie, Provisional)22.8 C (73.0 F)tie8 years2 of 100 (Routine)
3 September 2026Iola 1 W, USdaily high min (Tie, Provisional)23.3 C (73.9 F)tie25 years3 of 100 (Routine)
31 August 2026Iola 1 W, USdaily high max (Provisional)38.3 C (100.9 F)0.5 C (0.9 F)25 years14 of 100 (Routine)
31 August 2026Iola 1 W, USdaily high min (Tie, Provisional)23.9 C (75.0 F)tie12 years2 of 100 (Routine)
16 August 2026Iola 1 W, USdaily high min (Tie)25.6 C (78.1 F)tie39 years4 of 100 (Routine)
15 August 2026Iola 1 W, USdaily high min (Tie)25.0 C (77.0 F)tie48 years5 of 100 (Routine)
15 August 2026Iola 1 W, USdaily high max (Tie)38.3 C (100.9 F)tie19 years2 of 100 (Routine)
14 August 2026Iola 1 W, USdaily high min (Tie)23.3 C (73.9 F)tie37 years4 of 100 (Routine)
13 August 2026Iola 1 W, USdaily high min (Tie)25.6 C (78.1 F)tie16 years2 of 100 (Routine)
27 July 2026Iola 1 W, USdaily high min25.6 C (78.1 F)0.6 C (1.1 F)15 years12 of 100 (Routine)
24 June 2026Iola 1 W, USdaily low max (Tie)23.3 C (73.9 F)tie7 years2 of 100 (Routine)
23 June 2026Iola 1 W, USdaily low max20.6 C (69.1 F)4.4 C (7.9 F)27 years26 of 100 (Routine)
11 June 2026Iola 1 W, USdaily high min23.9 C (75.0 F)0.6 C (1.1 F)4 years8 of 100 (Routine)

Climate Trend

66 complete years, 1959 to 2025
Annual mean temperature at Iola 1 W as warming stripes, 1959 to 2025 One stripe for each of 66 complete years at Iola 1 W, 1959 to 2025. Blue stripes are years cooler than the station's own mean of 13.6 C (56.6 F); red stripes are warmer. The coolest year was 2008, at 12.2 C (53.9 F), and the warmest was 2012, at 15.3 C (59.6 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1959: 13.4 C, -0.2 C from the station mean1960: 13.1 C, -0.6 C from the station mean1961: 13.0 C, -0.7 C from the station mean1962: 13.5 C, -0.1 C from the station mean1963: 14.6 C, +0.9 C from the station mean1964: 14.2 C, +0.6 C from the station mean1965: 14.6 C, +1.0 C from the station mean1966: 13.7 C, 0.0 C from the station mean1967: 13.5 C, -0.2 C from the station mean1968: 13.2 C, -0.4 C from the station mean1969: 13.3 C, -0.4 C from the station mean1970: 13.9 C, +0.2 C from the station mean1971: 13.9 C, +0.3 C from the station mean1972: 13.5 C, -0.2 C from the station mean1973: 14.0 C, +0.3 C from the station mean1974: 13.9 C, +0.2 C from the station mean1975: 13.9 C, +0.3 C from the station mean1976: 13.7 C, +0.1 C from the station mean1977: 14.5 C, +0.8 C from the station mean1978: 13.5 C, -0.2 C from the station mean1979: 12.8 C, -0.9 C from the station mean1980: 14.9 C, +1.3 C from the station mean1981: 14.8 C, +1.1 C from the station mean1983: 13.7 C, 0.0 C from the station mean1984: 14.1 C, +0.5 C from the station mean1985: 13.0 C, -0.6 C from the station mean1986: 14.9 C, +1.3 C from the station mean1987: 14.6 C, +1.0 C from the station mean1988: 14.2 C, +0.5 C from the station mean1989: 13.1 C, -0.5 C from the station mean1990: 14.8 C, +1.2 C from the station mean1991: 14.9 C, +1.2 C from the station mean1992: 14.0 C, +0.3 C from the station mean1993: 13.0 C, -0.6 C from the station mean1994: 14.2 C, +0.6 C from the station mean1995: 13.8 C, +0.2 C from the station mean1996: 13.2 C, -0.5 C from the station mean1997: 12.4 C, -1.2 C from the station mean1998: 14.1 C, +0.5 C from the station mean1999: 13.7 C, +0.1 C from the station mean2000: 13.1 C, -0.6 C from the station mean2001: 13.6 C, 0.0 C from the station mean2002: 13.0 C, -0.7 C from the station mean2003: 12.7 C, -0.9 C from the station mean2004: 12.9 C, -0.7 C from the station mean2005: 13.6 C, -0.1 C from the station mean2006: 14.1 C, +0.4 C from the station mean2007: 13.4 C, -0.3 C from the station mean2008: 12.2 C, -1.5 C from the station mean2009: 12.2 C, -1.4 C from the station mean2010: 13.3 C, -0.3 C from the station mean2011: 13.4 C, -0.2 C from the station mean2012: 15.3 C, +1.7 C from the station mean2013: 12.5 C, -1.2 C from the station mean2014: 12.4 C, -1.2 C from the station mean2015: 13.7 C, +0.1 C from the station mean2016: 14.6 C, +0.9 C from the station mean2017: 14.3 C, +0.6 C from the station mean2018: 13.0 C, -0.6 C from the station mean2019: 13.0 C, -0.7 C from the station mean2020: 13.7 C, 0.0 C from the station mean2021: 13.9 C, +0.3 C from the station mean2022: 13.0 C, -0.7 C from the station mean2023: 13.8 C, +0.2 C from the station mean2024: 14.1 C, +0.4 C from the station mean2025: 13.1 C, -0.6 C from the station mean1959197019801990200020102020
One stripe for each of 66 complete years at Iola 1 W, 1959 to 2025. Blue stripes are years cooler than the station's own mean of 13.6 C (56.6 F); red stripes are warmer. The coolest year was 2008, at 12.2 C (53.9 F), and the warmest was 2012, at 15.3 C (59.6 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Iola 1 W as warming stripes, 1959 to 2025
YearAnnual mean temperatureDifference from the station mean
195913.4 C-0.24 C
196013.1 C-0.60 C
196113.0 C-0.67 C
196213.5 C-0.14 C
196314.6 C+0.91 C
196414.2 C+0.56 C
196514.6 C+0.96 C
196613.7 C+0.02 C
196713.5 C-0.20 C
196813.2 C-0.41 C
196913.3 C-0.38 C
197013.9 C+0.22 C
197113.9 C+0.25 C
197213.5 C-0.20 C
197314.0 C+0.32 C
197413.9 C+0.20 C
197513.9 C+0.29 C
197613.7 C+0.07 C
197714.5 C+0.81 C
197813.5 C-0.17 C
197912.8 C-0.87 C
198014.9 C+1.27 C
198114.8 C+1.11 C
198313.7 C+0.01 C
198414.1 C+0.47 C
198513.0 C-0.65 C
198614.9 C+1.25 C
198714.6 C+0.97 C
198814.2 C+0.54 C
198913.1 C-0.52 C
199014.8 C+1.15 C
199114.9 C+1.21 C
199214.0 C+0.32 C
199313.0 C-0.63 C
199414.2 C+0.56 C
199513.8 C+0.17 C
199613.2 C-0.46 C
199712.4 C-1.24 C
199814.1 C+0.46 C
199913.7 C+0.08 C
200013.1 C-0.57 C
200113.6 C-0.01 C
200213.0 C-0.68 C
200312.7 C-0.94 C
200412.9 C-0.71 C
200513.6 C-0.08 C
200614.1 C+0.42 C
200713.4 C-0.30 C
200812.2 C-1.46 C
200912.2 C-1.42 C
201013.3 C-0.31 C
201113.4 C-0.23 C
201215.3 C+1.67 C
201312.5 C-1.16 C
201412.4 C-1.21 C
201513.7 C+0.09 C
201614.6 C+0.91 C
201714.3 C+0.64 C
201813.0 C-0.61 C
201913.0 C-0.68 C
202013.7 C+0.00 C
202113.9 C+0.26 C
202213.0 C-0.68 C
202313.8 C+0.18 C
202414.1 C+0.43 C
202513.1 C-0.58 C

The fitted trend in annual mean temperature here over 1959 to 2025 is -0.07 C (-0.16 to 0.02) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.12 F (-0.28 to 0.04) per decade. The slope is a straight line fitted to 66 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Iola 1 W
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.07 C (-0.16 to 0.02) per decade-0.12 F (-0.28 to 0.04) per decade1959 to 202566Not clearly different from zero
Mean daily maximum-0.11 C (-0.22 to -0.01) per decade-0.21 F (-0.40 to -0.01) per decade1959 to 202566Fall
Mean daily minimum-0.02 C (-0.11 to 0.06) per decade-0.04 F (-0.19 to 0.11) per decade1959 to 202566Not clearly different from zero

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

1904 to 2026
Yearly extremes at Iola 1 W: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.8 C (109.0 F)198037.8 C (100.0 F)68
Coldest night (TNn)-31.1 C (-24.0 F)2011-20.0 C (-4.0 F)68
Wettest day (Rx1day)205.7 mm (8.1 in)202173.4 mm (2.9 in)123
Wettest five days (Rx5day)416.6 mm (16.4 in)2007117.0 mm (4.6 in)123
Longest dry spell (CDD)85 days195025 days123

Hottest day (TXx)

Hottest day (TXx) at Iola 1 W by year The hottest day of the year at Iola 1 W, 1904 to 2026. The record is 42.8 C (109.0 F) in 1980, marked on the chart; the median year is 37.8 C (100.0 F). 32.53537.54042.545192019401960198020002020Record: 42.8 C (109.0 F) in 1980
The hottest day of the year at Iola 1 W, 1904 to 2026. The record is 42.8 C (109.0 F) in 1980, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Iola 1 W by year
YearHottest day (TXx)
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
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
195936.1 C (97.0 F)
196037.8 C (100.0 F)
196136.7 C (98.1 F)
196237.8 C (100.0 F)
196340.6 C (105.1 F)
196441.1 C (106.0 F)
196536.7 C (98.1 F)
196638.9 C (102.0 F)
196737.2 C (99.0 F)
196835.6 C (96.1 F)
196937.2 C (99.0 F)
197040.6 C (105.1 F)
197136.1 C (97.0 F)
197237.2 C (99.0 F)
197336.7 C (98.1 F)
197441.7 C (107.1 F)
197537.8 C (100.0 F)
197637.8 C (100.0 F)
197737.8 C (100.0 F)
197840.6 C (105.1 F)
197936.1 C (97.0 F)
198042.8 C (109.0 F)
198140.6 C (105.1 F)
198237.8 C (100.0 F)
198339.4 C (102.9 F)
198440.6 C (105.1 F)
198538.3 C (100.9 F)
198641.1 C (106.0 F)
198737.8 C (100.0 F)
198837.8 C (100.0 F)
198935.0 C (95.0 F)
199037.2 C (99.0 F)
199138.3 C (100.9 F)
199235.0 C (95.0 F)
199336.1 C (97.0 F)
199438.3 C (100.9 F)
199538.9 C (102.0 F)
199636.7 C (98.1 F)
199734.4 C (93.9 F)
199837.2 C (99.0 F)
199938.3 C (100.9 F)
200040.6 C (105.1 F)
200137.2 C (99.0 F)
200236.7 C (98.1 F)
200338.3 C (100.9 F)
200433.9 C (93.0 F)
200536.7 C (98.1 F)
200638.9 C (102.0 F)
200738.9 C (102.0 F)
200836.7 C (98.1 F)
200935.6 C (96.1 F)
201038.3 C (100.9 F)
201142.2 C (108.0 F)
201242.2 C (108.0 F)
201336.7 C (98.1 F)
201436.7 C (98.1 F)
201536.1 C (97.0 F)
201637.2 C (99.0 F)
201738.3 C (100.9 F)
201836.7 C (98.1 F)
201935.0 C (95.0 F)
202035.6 C (96.1 F)
202136.7 C (98.1 F)
202238.3 C (100.9 F)
202341.1 C (106.0 F)
202436.7 C (98.1 F)
202535.6 C (96.1 F)
202638.3 C (100.9 F)

Coldest night (TNn)

Coldest night (TNn) at Iola 1 W by year The coldest night of the year at Iola 1 W, 1904 to 2026. The record is -31.1 C (-24.0 F) in 2011, marked on the chart; the median year is -20.0 C (-4.0 F). -35-30-25-20-15-10192019401960198020002020Record: -31.1 C (-24.0 F) in 2011
The coldest night of the year at Iola 1 W, 1904 to 2026. The record is -31.1 C (-24.0 F) in 2011, marked on the chart; the median year is -20.0 C (-4.0 F).
Coldest night (TNn) at Iola 1 W by year
YearColdest night (TNn)
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
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1934n/a
1935n/a
1936n/a
1937n/a
1938n/a
1939n/a
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959-22.8 C (-9.0 F)
1960-18.3 C (-0.9 F)
1961-18.9 C (-2.0 F)
1962-20.0 C (-4.0 F)
1963-25.6 C (-14.1 F)
1964-18.9 C (-2.0 F)
1965-16.1 C (3.0 F)
1966-21.1 C (-6.0 F)
1967-15.6 C (3.9 F)
1968-21.7 C (-7.1 F)
1969-20.0 C (-4.0 F)
1970-19.4 C (-2.9 F)
1971-18.9 C (-2.0 F)
1972-18.9 C (-2.0 F)
1973-20.6 C (-5.1 F)
1974-23.9 C (-11.0 F)
1975-16.1 C (3.0 F)
1976-20.0 C (-4.0 F)
1977-22.2 C (-8.0 F)
1978-22.2 C (-8.0 F)
1979-28.3 C (-18.9 F)
1980-22.2 C (-8.0 F)
1981-23.9 C (-11.0 F)
1982-23.9 C (-11.0 F)
1983-23.9 C (-11.0 F)
1984-20.6 C (-5.1 F)
1985-25.6 C (-14.1 F)
1986-16.1 C (3.0 F)
1987-16.1 C (3.0 F)
1988-21.7 C (-7.1 F)
1989-28.3 C (-18.9 F)
1990-20.0 C (-4.0 F)
1991-18.3 C (-0.9 F)
1992-12.2 C (10.0 F)
1993-18.9 C (-2.0 F)
1994-15.6 C (3.9 F)
1995-17.2 C (1.0 F)
1996-22.2 C (-8.0 F)
1997-21.7 C (-7.1 F)
1998-16.7 C (1.9 F)
1999-16.1 C (3.0 F)
2000-23.9 C (-11.0 F)
2001-23.9 C (-11.0 F)
2002-16.7 C (1.9 F)
2003-19.4 C (-2.9 F)
2004-16.7 C (1.9 F)
2005-26.7 C (-16.1 F)
2006-15.6 C (3.9 F)
2007-15.6 C (3.9 F)
2008-16.1 C (3.0 F)
2009-16.1 C (3.0 F)
2010-25.0 C (-13.0 F)
2011-31.1 C (-24.0 F)
2012-12.2 C (10.0 F)
2013-14.4 C (6.1 F)
2014-22.8 C (-9.0 F)
2015-16.7 C (1.9 F)
2016-21.7 C (-7.1 F)
2017-15.6 C (3.9 F)
2018-20.6 C (-5.1 F)
2019-17.2 C (1.0 F)
2020-15.0 C (5.0 F)
2021-27.8 C (-18.0 F)
2022-21.1 C (-6.0 F)
2023-13.9 C (7.0 F)
2024-21.7 C (-7.1 F)
2025-25.0 C (-13.0 F)
2026-20.0 C (-4.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Iola 1 W by year The wettest day of the year at Iola 1 W, 1904 to 2026. The record is 205.7 mm (8.1 in) in 2021, marked on the chart; the median year is 73.4 mm (2.9 in). 050100150200250192019401960198020002020Record: 205.7 mm (8.1 in) in 2021
The wettest day of the year at Iola 1 W, 1904 to 2026. The record is 205.7 mm (8.1 in) in 2021, marked on the chart; the median year is 73.4 mm (2.9 in).
Wettest day (Rx1day) at Iola 1 W by year
YearWettest day (Rx1day)
190421.6 mm (0.9 in)
190544.7 mm (1.8 in)
190653.3 mm (2.1 in)
190758.9 mm (2.3 in)
190894.7 mm (3.7 in)
190954.1 mm (2.1 in)
191064.3 mm (2.5 in)
191171.6 mm (2.8 in)
191298.0 mm (3.9 in)
191356.4 mm (2.2 in)
191447.2 mm (1.9 in)
1915172.7 mm (6.8 in)
1916112.8 mm (4.4 in)
191780.0 mm (3.1 in)
191856.6 mm (2.2 in)
191943.9 mm (1.7 in)
192072.6 mm (2.9 in)
192180.3 mm (3.2 in)
192284.1 mm (3.3 in)
192364.0 mm (2.5 in)
192477.0 mm (3.0 in)
1925113.5 mm (4.5 in)
1926107.7 mm (4.2 in)
192793.2 mm (3.7 in)
1928139.4 mm (5.5 in)
192973.4 mm (2.9 in)
193056.9 mm (2.2 in)
193173.9 mm (2.9 in)
193254.4 mm (2.1 in)
193353.1 mm (2.1 in)
193484.8 mm (3.3 in)
1935108.0 mm (4.3 in)
193652.1 mm (2.1 in)
193771.9 mm (2.8 in)
193850.8 mm (2.0 in)
193951.3 mm (2.0 in)
194060.5 mm (2.4 in)
1941128.3 mm (5.1 in)
194261.2 mm (2.4 in)
194392.2 mm (3.6 in)
194486.4 mm (3.4 in)
194556.4 mm (2.2 in)
194654.9 mm (2.2 in)
1947102.6 mm (4.0 in)
194885.1 mm (3.4 in)
194948.3 mm (1.9 in)
195051.8 mm (2.0 in)
195161.7 mm (2.4 in)
195239.9 mm (1.6 in)
195372.9 mm (2.9 in)
195459.4 mm (2.3 in)
1955105.4 mm (4.1 in)
195659.2 mm (2.3 in)
195775.9 mm (3.0 in)
195864.3 mm (2.5 in)
195949.5 mm (1.9 in)
196050.3 mm (2.0 in)
1961127.8 mm (5.0 in)
196268.6 mm (2.7 in)
196332.8 mm (1.3 in)
196461.0 mm (2.4 in)
196591.4 mm (3.6 in)
196651.8 mm (2.0 in)
196770.4 mm (2.8 in)
196864.0 mm (2.5 in)
196980.0 mm (3.1 in)
197071.1 mm (2.8 in)
197160.5 mm (2.4 in)
197258.4 mm (2.3 in)
197391.9 mm (3.6 in)
197477.7 mm (3.1 in)
197579.0 mm (3.1 in)
197655.9 mm (2.2 in)
197790.9 mm (3.6 in)
197854.1 mm (2.1 in)
1979101.1 mm (4.0 in)
198051.1 mm (2.0 in)
1981132.1 mm (5.2 in)
198274.4 mm (2.9 in)
198370.1 mm (2.8 in)
198478.7 mm (3.1 in)
1985144.8 mm (5.7 in)
1986141.0 mm (5.6 in)
198774.2 mm (2.9 in)
198895.5 mm (3.8 in)
198977.7 mm (3.1 in)
1990122.9 mm (4.8 in)
199176.2 mm (3.0 in)
1992126.5 mm (5.0 in)
1993104.1 mm (4.1 in)
1994146.1 mm (5.8 in)
199597.8 mm (3.9 in)
199667.6 mm (2.7 in)
1997101.6 mm (4.0 in)
1998115.8 mm (4.6 in)
199951.3 mm (2.0 in)
200058.2 mm (2.3 in)
2001104.1 mm (4.1 in)
200255.9 mm (2.2 in)
200357.4 mm (2.3 in)
200466.0 mm (2.6 in)
200594.5 mm (3.7 in)
200659.4 mm (2.3 in)
2007158.8 mm (6.3 in)
200876.2 mm (3.0 in)
2009100.3 mm (3.9 in)
201071.4 mm (2.8 in)
201169.1 mm (2.7 in)
201270.9 mm (2.8 in)
201378.0 mm (3.1 in)
201495.8 mm (3.8 in)
201597.8 mm (3.9 in)
2016120.7 mm (4.8 in)
201776.7 mm (3.0 in)
201896.5 mm (3.8 in)
2019123.2 mm (4.9 in)
202043.7 mm (1.7 in)
2021205.7 mm (8.1 in)
202261.7 mm (2.4 in)
202345.2 mm (1.8 in)
2024101.6 mm (4.0 in)
202573.7 mm (2.9 in)
202656.1 mm (2.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Iola 1 W by year The wettest five days of the year at Iola 1 W, 1904 to 2026. The record is 416.6 mm (16.4 in) in 2007, marked on the chart; the median year is 117.0 mm (4.6 in). 0100200300400500192019401960198020002020Record: 416.6 mm (16.4 in) in 2007
The wettest five days of the year at Iola 1 W, 1904 to 2026. The record is 416.6 mm (16.4 in) in 2007, marked on the chart; the median year is 117.0 mm (4.6 in).
Wettest five days (Rx5day) at Iola 1 W by year
YearWettest five days (Rx5day)
190436.8 mm (1.4 in)
1905134.1 mm (5.3 in)
1906100.8 mm (4.0 in)
1907124.5 mm (4.9 in)
1908192.4 mm (7.6 in)
190993.0 mm (3.7 in)
1910123.3 mm (4.9 in)
1911103.7 mm (4.1 in)
1912119.7 mm (4.7 in)
191381.8 mm (3.2 in)
191499.5 mm (3.9 in)
1915176.8 mm (7.0 in)
1916130.1 mm (5.1 in)
191790.1 mm (3.5 in)
191884.8 mm (3.3 in)
191983.7 mm (3.3 in)
192098.3 mm (3.9 in)
1921108.0 mm (4.3 in)
1922107.7 mm (4.2 in)
1923124.5 mm (4.9 in)
1924125.0 mm (4.9 in)
1925150.2 mm (5.9 in)
1926187.5 mm (7.4 in)
1927160.3 mm (6.3 in)
1928209.5 mm (8.2 in)
192985.6 mm (3.4 in)
1930121.6 mm (4.8 in)
193194.3 mm (3.7 in)
193270.9 mm (2.8 in)
193374.4 mm (2.9 in)
193492.4 mm (3.6 in)
1935127.0 mm (5.0 in)
193669.1 mm (2.7 in)
1937124.8 mm (4.9 in)
1938120.2 mm (4.7 in)
193974.6 mm (2.9 in)
194077.5 mm (3.1 in)
1941210.2 mm (8.3 in)
1942135.1 mm (5.3 in)
1943243.6 mm (9.6 in)
194488.2 mm (3.5 in)
1945157.0 mm (6.2 in)
194681.5 mm (3.2 in)
1947102.6 mm (4.0 in)
1948215.9 mm (8.5 in)
1949110.4 mm (4.3 in)
1950113.6 mm (4.5 in)
1951131.4 mm (5.2 in)
195250.4 mm (2.0 in)
195391.0 mm (3.6 in)
1954110.7 mm (4.4 in)
1955129.1 mm (5.1 in)
1956121.1 mm (4.8 in)
1957111.2 mm (4.4 in)
1958108.2 mm (4.3 in)
1959143.5 mm (5.6 in)
196065.1 mm (2.6 in)
1961167.6 mm (6.6 in)
1962143.0 mm (5.6 in)
196353.5 mm (2.1 in)
196491.2 mm (3.6 in)
1965130.5 mm (5.1 in)
196664.0 mm (2.5 in)
1967125.0 mm (4.9 in)
1968131.8 mm (5.2 in)
1969120.1 mm (4.7 in)
1970104.6 mm (4.1 in)
197179.3 mm (3.1 in)
197287.2 mm (3.4 in)
1973147.6 mm (5.8 in)
1974164.4 mm (6.5 in)
197592.5 mm (3.6 in)
1976118.9 mm (4.7 in)
1977217.4 mm (8.6 in)
197861.7 mm (2.4 in)
1979148.6 mm (5.9 in)
198083.6 mm (3.3 in)
1981153.9 mm (6.1 in)
1982201.3 mm (7.9 in)
198386.1 mm (3.4 in)
1984109.7 mm (4.3 in)
1985159.6 mm (6.3 in)
1986342.7 mm (13.5 in)
1987109.7 mm (4.3 in)
1988112.3 mm (4.4 in)
1989116.0 mm (4.6 in)
1990168.6 mm (6.6 in)
199176.2 mm (3.0 in)
1992147.3 mm (5.8 in)
1993165.9 mm (6.5 in)
1994205.3 mm (8.1 in)
1995119.2 mm (4.7 in)
199691.8 mm (3.6 in)
1997106.6 mm (4.2 in)
1998135.8 mm (5.3 in)
199991.9 mm (3.6 in)
200094.2 mm (3.7 in)
2001116.3 mm (4.6 in)
200283.5 mm (3.3 in)
2003136.2 mm (5.4 in)
2004122.7 mm (4.8 in)
2005133.8 mm (5.3 in)
200687.9 mm (3.5 in)
2007416.6 mm (16.4 in)
2008110.2 mm (4.3 in)
2009140.4 mm (5.5 in)
2010192.6 mm (7.6 in)
201180.3 mm (3.2 in)
201299.3 mm (3.9 in)
2013164.9 mm (6.5 in)
2014122.7 mm (4.8 in)
2015108.0 mm (4.3 in)
2016169.7 mm (6.7 in)
2017130.5 mm (5.1 in)
2018175.5 mm (6.9 in)
2019217.7 mm (8.6 in)
202080.4 mm (3.2 in)
2021284.8 mm (11.2 in)
202292.0 mm (3.6 in)
202371.8 mm (2.8 in)
2024149.6 mm (5.9 in)
2025117.0 mm (4.6 in)
202691.2 mm (3.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Iola 1 W by year The longest dry spell of the year at Iola 1 W, 1904 to 2026. The record is 85 days in 1950, marked on the chart; the median year is 25 days. 020406080100192019401960198020002020Record: 85 days in 1950
The longest dry spell of the year at Iola 1 W, 1904 to 2026. The record is 85 days in 1950, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Iola 1 W by year
YearLongest dry spell (CDD)
190427 days
190522 days
190623 days
190720 days
190830 days
190924 days
191046 days
191127 days
191232 days
191319 days
191433 days
191527 days
191642 days
191741 days
191830 days
191938 days
192028 days
192125 days
192221 days
192322 days
192421 days
192521 days
192621 days
192717 days
192820 days
192916 days
193041 days
193122 days
193224 days
193325 days
193436 days
193526 days
193648 days
193723 days
193845 days
193921 days
194026 days
194119 days
194225 days
194327 days
194428 days
194551 days
194624 days
194734 days
194825 days
194928 days
195085 days
195128 days
195248 days
195323 days
195439 days
195549 days
195634 days
195717 days
195844 days
195936 days
196017 days
196116 days
196221 days
196319 days
196420 days
196530 days
196631 days
196726 days
196819 days
196922 days
197034 days
197130 days
197217 days
197318 days
197432 days
197518 days
197651 days
197725 days
197822 days
197942 days
198029 days
198120 days
198219 days
198321 days
198424 days
198519 days
198633 days
198716 days
198822 days
198938 days
199025 days
199123 days
199219 days
199324 days
199423 days
199537 days
199656 days
199717 days
199819 days
199930 days
200037 days
200132 days
200229 days
200321 days
200424 days
200517 days
200633 days
200733 days
200822 days
200940 days
201035 days
201123 days
201233 days
201333 days
201423 days
201526 days
201625 days
201737 days
201832 days
201915 days
202025 days
202134 days
202232 days
202320 days
202432 days
202529 days
202619 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

66 years with a frost

Across 66 years with a frost, the median last spring frost at Iola 1 W falls on 9 April and the median first autumn frost on 25 October, which leaves a median of 197 days between them.

In 1996 to 2025 the median growing season was 199 days. That is 3 days more than in 1959 to 1989.

Fitted over all years, the growing season changes by +1.7 days per decade at this station.

Frost dates and growing season at Iola 1 W
MeasureMedian, all yearsEarliest period (1959 to 1989)Recent period (1996 to 2025)Recent against earliestFitted trend
Last spring frost9 April10 April10 Aprilno change-0.8 days per decade
First autumn frost25 October24 October26 October2 days later+0.8 days per decade
Growing days197 days196 days199 days3 days more+1.7 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

119 years, 1905 to 2025

A day with at least 74.4 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 188.3 mm (7.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Iola 1 W: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years74.4 mm (2.9 in)
5 years100.4 mm (4.0 in)
10 years119.3 mm (4.7 in)
25 years145.3 mm (5.7 in)
50 years166.1 mm (6.5 in)
100 years188.3 mm (7.4 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 119 years of values from 1905 to 2025.

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: 205.7 mm (8.1 in) in 2021; 172.7 mm (6.8 in) in 1915; 158.8 mm (6.3 in) in 2007.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2011 to 2025 against 1961 to 1990

Over 2011 to 2025, Iola 1 W had a mean temperature of 13.6 C (56.5 F) and 1,042.3 mm (41.0 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Sparta 1 W (United States, 500 km away), Stockton Dam (United States, 147 km away) and Evansville Rgnl AP (United States, 693 km away).

Climate twins of Iola 1 W: stations whose 1961 to 1990 climate is closest to its 2011 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
Sparta 1 WUnited States500 km (311 mi)13.5 C (56.4 F)1,056.3 mm (41.6 in)0.56
Stockton DamUnited States147 km (91 mi)13.4 C (56.0 F)1,047.1 mm (41.2 in)0.63
Evansville Rgnl APUnited States693 km (431 mi)13.2 C (55.7 F)1,096.4 mm (43.2 in)0.68

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 Iola 1 W standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Iola 1 W 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).