Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Decatur Threshold Days by Year (USC00412334)

18 fixed thresholds counted per year at Decatur (USC00412334): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Decatur Thresholds

  • Decatur: days with 10 mm (0.39 in) or more of precipitation in 65 years, most in 2015 with 46.
  • Decatur: days with 25 mm (0.98 in) or more of precipitation in 65 years, most in 2015 with 21.
  • Decatur: days with 50 mm (1.97 in) or more of precipitation in 59 years, most in 1981 with 9.
  • Decatur: days with 100 mm (3.94 in) or more of precipitation in 19 years, most in 2015 with 4.
  • 18 fixed thresholds have at least one qualifying day at Decatur.
18 years with a qualifying day
Days at or above 30 C (86 F) per year at Decatur Days per year at Decatur with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 170 in 2021. 0501001502002005: 1352006: 1412007: 1002008: 1222009: 1102010: 1152011: 1422012: 1332013: 1202014: 1162015: 1172016: 1212017: 1382018: 1392019: 1352020: 1362021: 1702022: 155200520072009201120132015201720192021
Days per year at Decatur with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 170 in 2021.
Days at or above 30 C (86 F) per year at Decatur
YearDaysDecade average
2005135121.6
2006141121.6
2007100121.6
2008122121.6
2009110121.6
2010115127.6
2011142127.6
2012133127.6
2013120127.6
2014116127.6
2015117127.6
2016121127.6
2017138127.6
2018139127.6
2019135127.6
2020136153.7
2021170153.7
2022155153.7
First to last qualifying date each year at Decatur For each year, a bar from the first to the last day at Decatur meeting 30 C (86 F). 2005: 13 March 2005 to 9 November 20052006: 4 January 2006 to 18 October 20062007: 4 April 2007 to 21 October 20072008: 1 April 2008 to 27 October 20082009: 27 February 2009 to 2 October 20092010: 11 May 2010 to 26 October 20102011: 18 March 2011 to 8 October 20112012: 2 April 2012 to 3 November 20122013: 5 March 2013 to 13 October 20132014: 19 March 2014 to 27 October 20142015: 25 March 2015 to 16 October 20152016: 15 March 2016 to 31 October 20162017: 12 February 2017 to 18 November 20172018: 7 April 2018 to 9 October 20182019: 10 April 2019 to 21 October 20192020: 12 March 2020 to 15 November 20202021: 26 April 2021 to 31 December 20212022: 2 January 2022 to 22 October 2022200520082011201420172020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Decatur meeting 30 C (86 F).
First to last qualifying date each year at Decatur
YearFirst dateLast date
20052005-03-132005-11-09
20062006-01-042006-10-18
20072007-04-042007-10-21
20082008-04-012008-10-27
20092009-02-272009-10-02
20102010-05-112010-10-26
20112011-03-182011-10-08
20122012-04-022012-11-03
20132013-03-052013-10-13
20142014-03-192014-10-27
20152015-03-252015-10-16
20162016-03-152016-10-31
20172017-02-122017-11-18
20182018-04-072018-10-09
20192019-04-102019-10-21
20202020-03-122020-11-15
20212021-04-262021-12-31
20222022-01-022022-10-22

Every Fixed Threshold

Fixed thresholds at Decatur
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days181702021155
35 C (95 F): Days1895202178
40 C (104 F): Days112020118
90 F (32.2 C): Days181432021122
100 F (37.8 C): Days1752201138
110 F (43.3 C): Days2420181
0 C (32 F): Ice days (max14720143
0 C (32 F): Frost days (min1876200853
-10 C (14 F): Days with min131020145
-20 C (-4 F): Days with min1120211
20 C (68 F): Tropical nights (min181382021124
25 C (77 F): Days with min1743202243
10 mm (0.39 in): Days with 10 mm or more rain6546201515
25 mm (0.98 in): Days with 25 mm or more rain652120158
50 mm (1.97 in): Days with 50 mm or more rain59919812
100 mm (3.94 in): Days with 100 mm or more rain19420152
200 mm (7.87 in): Days with 200 mm or more rain2119821
10 cm (3.9 in): Days with 10 cm or more snowfall4119801

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2005.

Download the Data

  • Data for Decatur 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).