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Built 2026-10-19 (19 October 2026)

Dekalb Threshold Days by Year (USC00412352)

16 fixed thresholds counted per year at Dekalb (USC00412352): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dekalb Thresholds

  • Dekalb: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1968 with 53.
  • Dekalb: days with 25 mm (0.98 in) or more of precipitation in 57 years, most in 2001 with 28.
  • Dekalb: days with 50 mm (1.97 in) or more of precipitation in 57 years, most in 1990 with 12.
  • Dekalb: days with a maximum temperature at or above 30 C (86 F) in 23 years, most in 1987 with 144.
  • 16 fixed thresholds have at least one qualifying day at Dekalb.
23 years with a qualifying day
Days at or above 30 C (86 F) per year at Dekalb Days per year at Dekalb with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 144 in 1987. 0501001501981: 1171983: 1051986: 1261987: 1441988: 1271989: 1171990: 1171991: 1221992: 1041993: 891994: 1151995: 1111996: 1091997: 1061998: 1352000: 1242001: 1052006: 1312011: 1412012: 1282014: 1012015: 1192016: 13619811987199019931996200020112015
Days per year at Dekalb with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 144 in 1987.
Days at or above 30 C (86 F) per year at Dekalb
YearDaysDecade average
1981117122.7
1983105122.7
1986126122.7
1987144122.7
1988127122.7
1989117122.7
1990117112
1991122112
1992104112
199389112
1994115112
1995111112
1996109112
1997106112
1998135112
2000124120
2001105120
2006131120
2011141125
2012128125
2014101125
2015119125
2016136125
First to last qualifying date each year at Dekalb For each year, a bar from the first to the last day at Dekalb meeting 30 C (86 F). 1981: 21 April 1981 to 6 October 19811983: 8 May 1983 to 5 October 19831986: 7 May 1986 to 5 October 19861987: 17 April 1987 to 2 October 19871988: 4 April 1988 to 16 October 19881989: 3 April 1989 to 6 November 19891990: 22 April 1990 to 7 October 19901991: 5 March 1991 to 18 October 19911992: 14 April 1992 to 26 October 19921993: 4 May 1993 to 1 October 19931994: 27 April 1994 to 7 October 19941995: 22 March 1995 to 16 October 19951996: 21 February 1996 to 27 October 19961997: 2 May 1997 to 6 October 19971998: 7 May 1998 to 16 October 19982000: 19 April 2000 to 6 October 20002001: 5 April 2001 to 18 September 20012006: 2 March 2006 to 6 October 20062011: 27 March 2011 to 17 October 20112012: 1 April 2012 to 29 September 20122014: 3 May 2014 to 13 October 20142015: 5 June 2015 to 16 October 20152016: 17 March 2016 to 17 November 201619811987199019931996200020112015JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Dekalb meeting 30 C (86 F).
First to last qualifying date each year at Dekalb
YearFirst dateLast date
19811981-04-211981-10-06
19831983-05-081983-10-05
19861986-05-071986-10-05
19871987-04-171987-10-02
19881988-04-041988-10-16
19891989-04-031989-11-06
19901990-04-221990-10-07
19911991-03-051991-10-18
19921992-04-141992-10-26
19931993-05-041993-10-01
19941994-04-271994-10-07
19951995-03-221995-10-16
19961996-02-211996-10-27
19971997-05-021997-10-06
19981998-05-071998-10-16
20002000-04-192000-10-06
20012001-04-052001-09-18
20062006-03-022006-10-06
20112011-03-272011-10-17
20122012-04-012012-09-29
20142014-05-032014-10-13
20152015-06-052015-10-16
20162016-03-172016-11-17

Every Fixed Threshold

Fixed thresholds at Dekalb
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days231441987136
35 C (95 F): Days2389201143
40 C (104 F): Days82320112
90 F (32.2 C): Days231161998104
100 F (37.8 C): Days1754201111
110 F (43.3 C): Days2320113
0 C (32 F): Ice days (max171119831
0 C (32 F): Frost days (min2174201438
-10 C (14 F): Days with min11520112
20 C (68 F): Tropical nights (min211341998105
25 C (77 F): Days with min162019982
10 mm (0.39 in): Days with 10 mm or more rain5753196835
25 mm (0.98 in): Days with 25 mm or more rain5728200116
50 mm (1.97 in): Days with 50 mm or more rain571219909
100 mm (3.94 in): Days with 100 mm or more rain21319662
10 cm (3.9 in): Days with 10 cm or more snowfall9220111

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1981.

Download the Data

  • Data for Dekalb 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).