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

Morton Threshold Days by Year (USC00115876)

6 fixed thresholds counted per year at Morton (USC00115876): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Morton Thresholds

  • Morton: days with 10 mm (0.39 in) or more of precipitation in 28 years, most in 2009 with 44.
  • Morton: days with 25 mm (0.98 in) or more of precipitation in 28 years, most in 2009 with 14.
  • Morton: days with 50 mm (1.97 in) or more of precipitation in 20 years, most in 2008 with 5.
  • Morton: days with 10 cm (3.9 in) or more of snowfall in 18 years, most in 2000 with 4.
  • 6 fixed thresholds have at least one qualifying day at Morton.
28 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Morton Days per year at Morton with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 2009. 02040601998: 301999: 252000: 282001: 332002: 292003: 292004: 362005: 212006: 382007: 322008: 362009: 442010: 382011: 382012: 212013: 352014: 282015: 412016: 312017: 192018: 342019: 352020: 352021: 372022: 302023: 342024: 392025: 241998200120042007201020132016201920222025
Days per year at Morton 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 Morton
YearDaysDecade average
19983027.5
19992527.5
20002832.6
20013332.6
20022932.6
20032932.6
20043632.6
20052132.6
20063832.6
20073232.6
20083632.6
20094432.6
20103832
20113832
20122132
20133532
20142832
20154132
20163132
20171932
20183432
20193532
20203533.2
20213733.2
20223033.2
20233433.2
20243933.2
20252433.2
First to last qualifying date each year at Morton For each year, a bar from the first to the last day at Morton meeting 10 mm (0.39 in). 1998: 4 January 1998 to 7 December 19981999: 18 January 1999 to 5 December 19992000: 20 January 2000 to 12 December 20002001: 29 January 2001 to 24 November 20012002: 30 January 2002 to 19 December 20022003: 15 February 2003 to 10 December 20032004: 5 March 2004 to 7 December 20042005: 3 January 2005 to 25 December 20052006: 2 January 2006 to 21 December 20062007: 5 January 2007 to 12 December 20072008: 8 January 2008 to 28 December 20082009: 27 February 2009 to 25 December 20092010: 7 January 2010 to 31 December 20102011: 1 January 2011 to 15 December 20112012: 29 February 2012 to 20 December 20122013: 11 January 2013 to 22 December 20132014: 11 January 2014 to 23 December 20142015: 4 January 2015 to 29 December 20152016: 3 February 2016 to 5 December 20162017: 7 March 2017 to 19 November 20172018: 22 January 2018 to 28 December 20182019: 1 January 2019 to 29 December 20192020: 11 January 2020 to 30 December 20202021: 2 January 2021 to 29 December 20212022: 2 January 2022 to 15 December 20222023: 19 January 2023 to 26 December 20232024: 9 January 2024 to 31 December 20242025: 5 March 2025 to 29 December 20251998200220062010201420182022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Morton meeting 10 mm (0.39 in).
First to last qualifying date each year at Morton
YearFirst dateLast date
19981998-01-041998-12-07
19991999-01-181999-12-05
20002000-01-202000-12-12
20012001-01-292001-11-24
20022002-01-302002-12-19
20032003-02-152003-12-10
20042004-03-052004-12-07
20052005-01-032005-12-25
20062006-01-022006-12-21
20072007-01-052007-12-12
20082008-01-082008-12-28
20092009-02-272009-12-25
20102010-01-072010-12-31
20112011-01-012011-12-15
20122012-02-292012-12-20
20132013-01-112013-12-22
20142014-01-112014-12-23
20152015-01-042015-12-29
20162016-02-032016-12-05
20172017-03-072017-11-19
20182018-01-222018-12-28
20192019-01-012019-12-29
20202020-01-112020-12-30
20212021-01-022021-12-29
20222022-01-022022-12-15
20232023-01-192023-12-26
20242024-01-092024-12-31
20252025-03-052025-12-29

Every Fixed Threshold

Fixed thresholds at Morton
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2844200924
25 mm (0.98 in): Days with 25 mm or more rain281420095
50 mm (1.97 in): Days with 50 mm or more rain20520081
100 mm (3.94 in): Days with 100 mm or more rain1120201
10 cm (3.9 in): Days with 10 cm or more snowfall18420002
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 1998.

Download the Data

  • Data for Morton 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).