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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Prophetstown Threshold Days by Year (USC00117014)

6 fixed thresholds counted per year at Prophetstown (USC00117014): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Prophetstown Thresholds

  • Prophetstown: days with 10 mm (0.39 in) or more of precipitation in 25 years, most in 2009 with 44.
  • Prophetstown: days with 25 mm (0.98 in) or more of precipitation in 25 years, most in 2009 with 16.
  • Prophetstown: days with 50 mm (1.97 in) or more of precipitation in 21 years, most in 2016 with 6.
  • Prophetstown: days with 10 cm (3.9 in) or more of snowfall in 20 years, most in 2019 with 7.
  • 6 fixed thresholds have at least one qualifying day at Prophetstown.
25 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Prophetstown Days per year at Prophetstown with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 2009. 02040601949: 241950: 231996: 351997: 271998: 391999: 252000: 372001: 372002: 272003: 262004: 322005: 172006: 322007: 342008: 352009: 442010: 272014: 312015: 392016: 372017: 302018: 392019: 442020: 322021: 29194919972000200320062009201520182021
Days per year at Prophetstown with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 2009.
Days with 10 mm (0.39 in) or more of precipitation per year at Prophetstown
YearDaysDecade average
19492424
19502323
19963531.5
19972731.5
19983931.5
19992531.5
20003732.1
20013732.1
20022732.1
20032632.1
20043232.1
20051732.1
20063232.1
20073432.1
20083532.1
20094432.1
20102735.3
20143135.3
20153935.3
20163735.3
20173035.3
20183935.3
20194435.3
20203230.5
20212930.5
First to last qualifying date each year at Prophetstown For each year, a bar from the first to the last day at Prophetstown meeting 10 mm (0.39 in). 1949: 18 January 1949 to 31 December 19491950: 13 January 1950 to 7 October 19501996: 11 January 1996 to 15 December 19961997: 25 January 1997 to 25 December 19971998: 4 January 1998 to 7 December 19981999: 2 January 1999 to 10 December 19992000: 20 January 2000 to 11 December 20002001: 30 January 2001 to 13 December 20012002: 31 January 2002 to 24 October 20022003: 20 March 2003 to 10 December 20032004: 5 March 2004 to 7 December 20042005: 2 January 2005 to 9 December 20052006: 29 January 2006 to 21 December 20062007: 25 February 2007 to 23 December 20072008: 1 January 2008 to 28 December 20082009: 27 February 2009 to 25 December 20092010: 24 January 2010 to 13 December 20102014: 11 January 2014 to 16 December 20142015: 5 January 2015 to 29 December 20152016: 3 February 2016 to 26 December 20162017: 17 January 2017 to 15 October 20172018: 22 January 2018 to 27 December 20182019: 1 January 2019 to 29 December 20192020: 11 January 2020 to 30 December 20202021: 2 January 2021 to 29 December 20211949199820022006201020172021JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Prophetstown meeting 10 mm (0.39 in).
First to last qualifying date each year at Prophetstown
YearFirst dateLast date
19491949-01-181949-12-31
19501950-01-131950-10-07
19961996-01-111996-12-15
19971997-01-251997-12-25
19981998-01-041998-12-07
19991999-01-021999-12-10
20002000-01-202000-12-11
20012001-01-302001-12-13
20022002-01-312002-10-24
20032003-03-202003-12-10
20042004-03-052004-12-07
20052005-01-022005-12-09
20062006-01-292006-12-21
20072007-02-252007-12-23
20082008-01-012008-12-28
20092009-02-272009-12-25
20102010-01-242010-12-13
20142014-01-112014-12-16
20152015-01-052015-12-29
20162016-02-032016-12-26
20172017-01-172017-10-15
20182018-01-222018-12-27
20192019-01-012019-12-29
20202020-01-112020-12-30
20212021-01-022021-12-29

Every Fixed Threshold

Fixed thresholds at Prophetstown
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2544200929
25 mm (0.98 in): Days with 25 mm or more rain251620098
50 mm (1.97 in): Days with 50 mm or more rain21620161
100 mm (3.94 in): Days with 100 mm or more rain2120081
10 cm (3.9 in): Days with 10 cm or more snowfall20720191
25 cm (9.8 in): Days with 25 cm or more snowfall2119991

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for Prophetstown 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 (2025-12-31).