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Built 2026-10-19 (19 October 2026)

Des Moines Wsfo-Johnston Threshold Days by Year (USC00132209)

18 fixed thresholds counted per year at Des Moines Wsfo-Johnston (USC00132209): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Des Moines Wsfo-Johnston Thresholds

  • Des Moines Wsfo-Johnston: days with a maximum temperature at or above 30 C (86 F) in 31 years, most in 2012 with 68.
  • Des Moines Wsfo-Johnston: days with a maximum temperature at or above 90 F (32.2 C) in 31 years, most in 2012 with 40.
  • Des Moines Wsfo-Johnston: days with a maximum temperature at or below 0 C (32 F) in 31 years, most in 2010 with 76.
  • Des Moines Wsfo-Johnston: nights with a minimum temperature at or below 0 C (32 F) in 31 years, most in 2008 with 154.
  • 18 fixed thresholds have at least one qualifying day at Des Moines Wsfo-Johnston.
31 years with a qualifying day
Days at or above 30 C (86 F) per year at Des Moines Wsfo-Johnston Days per year at Des Moines Wsfo-Johnston with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 68 in 2012. 0204060801996: 231997: 401998: 431999: 362000: 422001: 512002: 612003: 382004: 102005: 512006: 552007: 492008: 202009: 162010: 392011: 442012: 682013: 492014: 122015: 202016: 502017: 522018: 502019: 372020: 522021: 592022: 652023: 462024: 462025: 442026: 4919962000200420082012201620202024
Days per year at Des Moines Wsfo-Johnston with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 68 in 2012.
Days at or above 30 C (86 F) per year at Des Moines Wsfo-Johnston
YearDaysDecade average
19962335.5
19974035.5
19984335.5
19993635.5
20004239.3
20015139.3
20026139.3
20033839.3
20041039.3
20055139.3
20065539.3
20074939.3
20082039.3
20091639.3
20103942.1
20114442.1
20126842.1
20134942.1
20141242.1
20152042.1
20165042.1
20175242.1
20185042.1
20193742.1
20205251.6
20215951.6
20226551.6
20234651.6
20244651.6
20254451.6
20264951.6
First to last qualifying date each year at Des Moines Wsfo-Johnston For each year, a bar from the first to the last day at Des Moines Wsfo-Johnston meeting 30 C (86 F). 1996: 17 May 1996 to 4 September 19961997: 18 May 1997 to 6 October 19971998: 18 May 1998 to 29 September 19981999: 5 June 1999 to 12 October 19992000: 11 May 2000 to 18 September 20002001: 26 April 2001 to 12 September 20012002: 15 April 2002 to 30 September 20022003: 1 April 2003 to 20 October 20032004: 7 June 2004 to 1 September 20042005: 6 June 2005 to 4 October 20052006: 13 April 2006 to 3 October 20062007: 29 April 2007 to 21 September 20072008: 25 May 2008 to 1 September 20082009: 17 June 2009 to 14 August 20092010: 24 May 2010 to 20 September 20102011: 10 April 2011 to 12 September 20112012: 25 April 2012 to 11 September 20122013: 14 May 2013 to 27 September 20132014: 7 May 2014 to 4 September 20142015: 9 June 2015 to 16 September 20152016: 6 May 2016 to 24 September 20162017: 15 May 2017 to 24 September 20172018: 23 May 2018 to 3 October 20182019: 16 May 2019 to 30 September 20192020: 2 June 2020 to 9 October 20202021: 1 May 2021 to 29 September 20212022: 9 May 2022 to 20 September 20222023: 30 May 2023 to 3 October 20232024: 14 April 2024 to 11 October 20242025: 2 June 2025 to 4 October 20252026: 21 March 2026 to 12 October 202619962000200420082012201620202024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Des Moines Wsfo-Johnston meeting 30 C (86 F).
First to last qualifying date each year at Des Moines Wsfo-Johnston
YearFirst dateLast date
19961996-05-171996-09-04
19971997-05-181997-10-06
19981998-05-181998-09-29
19991999-06-051999-10-12
20002000-05-112000-09-18
20012001-04-262001-09-12
20022002-04-152002-09-30
20032003-04-012003-10-20
20042004-06-072004-09-01
20052005-06-062005-10-04
20062006-04-132006-10-03
20072007-04-292007-09-21
20082008-05-252008-09-01
20092009-06-172009-08-14
20102010-05-242010-09-20
20112011-04-102011-09-12
20122012-04-252012-09-11
20132013-05-142013-09-27
20142014-05-072014-09-04
20152015-06-092015-09-16
20162016-05-062016-09-24
20172017-05-152017-09-24
20182018-05-232018-10-03
20192019-05-162019-09-30
20202020-06-022020-10-09
20212021-05-012021-09-29
20222022-05-092022-09-20
20232023-05-302023-10-03
20242024-04-142024-10-11
20252025-06-022025-10-04
20262026-03-212026-10-12

Every Fixed Threshold

Fixed thresholds at Des Moines Wsfo-Johnston
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days3168201249
35 C (95 F): Days231720125
40 C (104 F): Days1120121
90 F (32.2 C): Days3140201220
100 F (37.8 C): Days6520123
0 C (32 F): Ice days (max3176201027
0 C (32 F): Frost days (min31154200864
-10 C (14 F): Days with min3168201427
-20 C (-4 F): Days with min302120143
-30 C (-22 F): Days with min5219961
20 C (68 F): Tropical nights (min3142200244
25 C (77 F): Days with min16420113
10 mm (0.39 in): Days with 10 mm or more rain3143201032
25 mm (0.98 in): Days with 25 mm or more rain3120201014
50 mm (1.97 in): Days with 50 mm or more rain28620103
100 mm (3.94 in): Days with 100 mm or more rain3119971
10 cm (3.9 in): Days with 10 cm or more snowfall28520191
25 cm (9.8 in): Days with 25 cm or more snowfall8119961

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1996.

Download the Data

  • Data for Des Moines Wsfo-Johnston 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). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).