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

Cahokia Threshold Days by Year (USC00111160)

17 fixed thresholds counted per year at Cahokia (USC00111160): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cahokia Thresholds

  • Cahokia: days with a maximum temperature at or above 30 C (86 F) in 30 years, most in 1987 with 103.
  • Cahokia: days with a maximum temperature at or above 35 C (95 F) in 30 years, most in 1988 with 34.
  • Cahokia: days with a maximum temperature at or above 90 F (32.2 C) in 30 years, most in 1987 with 73.
  • Cahokia: days with a maximum temperature at or below 0 C (32 F) in 30 years, most in 1978 with 52.
  • 17 fixed thresholds have at least one qualifying day at Cahokia.
30 years with a qualifying day
Days at or above 30 C (86 F) per year at Cahokia Days per year at Cahokia with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 103 in 1987. 0501001501971: 681972: 641974: 521975: 791976: 641977: 741978: 651979: 721985: 701987: 1031988: 991989: 661990: 691991: 841992: 631993: 761994: 701995: 711996: 611997: 601998: 691999: 622000: 592001: 622005: 802006: 692007: 842008: 442009: 342010: 951971197519781987199019931996199920052008
Days per year at Cahokia with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 103 in 1987.
Days at or above 30 C (86 F) per year at Cahokia
YearDaysDecade average
19716867.3
19726467.3
19745267.3
19757967.3
19766467.3
19777467.3
19786567.3
19797267.3
19857084.5
198710384.5
19889984.5
19896684.5
19906968.5
19918468.5
19926368.5
19937668.5
19947068.5
19957168.5
19966168.5
19976068.5
19986968.5
19996268.5
20005961.7
20016261.7
20058061.7
20066961.7
20078461.7
20084461.7
20093461.7
20109595
First to last qualifying date each year at Cahokia For each year, a bar from the first to the last day at Cahokia meeting 30 C (86 F). 1971: 13 April 1971 to 3 October 19711972: 7 April 1972 to 22 September 19721974: 17 May 1974 to 28 August 19741975: 20 May 1975 to 22 October 19751976: 24 April 1976 to 13 October 19761977: 11 April 1977 to 28 September 19771978: 25 May 1978 to 22 October 19781979: 1 June 1979 to 22 October 19791985: 28 March 1985 to 22 September 19851987: 20 April 1987 to 26 September 19871988: 5 April 1988 to 23 September 19881989: 24 April 1989 to 15 October 19891990: 23 April 1990 to 6 October 19901991: 26 March 1991 to 16 September 19911992: 30 April 1992 to 15 October 19921993: 28 May 1993 to 12 September 19931994: 18 April 1994 to 2 October 19941995: 7 June 1995 to 13 October 19951996: 9 May 1996 to 12 September 19961997: 22 March 1997 to 8 October 19971998: 15 May 1998 to 30 September 19981999: 5 June 1999 to 28 September 19992000: 13 May 2000 to 4 October 20002001: 9 April 2001 to 9 September 20012005: 12 May 2005 to 6 October 20052006: 14 April 2006 to 5 October 20062007: 30 April 2007 to 9 October 20072008: 31 May 2008 to 23 September 20082009: 25 April 2009 to 28 August 20092010: 7 April 2010 to 11 October 201019711976198519901994199820052009JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Cahokia meeting 30 C (86 F).
First to last qualifying date each year at Cahokia
YearFirst dateLast date
19711971-04-131971-10-03
19721972-04-071972-09-22
19741974-05-171974-08-28
19751975-05-201975-10-22
19761976-04-241976-10-13
19771977-04-111977-09-28
19781978-05-251978-10-22
19791979-06-011979-10-22
19851985-03-281985-09-22
19871987-04-201987-09-26
19881988-04-051988-09-23
19891989-04-241989-10-15
19901990-04-231990-10-06
19911991-03-261991-09-16
19921992-04-301992-10-15
19931993-05-281993-09-12
19941994-04-181994-10-02
19951995-06-071995-10-13
19961996-05-091996-09-12
19971997-03-221997-10-08
19981998-05-151998-09-30
19991999-06-051999-09-28
20002000-05-132000-10-04
20012001-04-092001-09-09
20052005-05-122005-10-06
20062006-04-142006-10-05
20072007-04-302007-10-09
20082008-05-312008-09-23
20092009-04-252009-08-28
20102010-04-072010-10-11

Every Fixed Threshold

Fixed thresholds at Cahokia
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days30103198795
35 C (95 F): Days3034198814
40 C (104 F): Days1120071
90 F (32.2 C): Days3073198766
100 F (37.8 C): Days141419884
0 C (32 F): Ice days (max3052197829
0 C (32 F): Frost days (min301181972104
-10 C (14 F): Days with min3045197723
-20 C (-4 F): Days with min161219771
20 C (68 F): Tropical nights (min3069199869
25 C (77 F): Days with min21820108
10 mm (0.39 in): Days with 10 mm or more rain3049199038
25 mm (0.98 in): Days with 25 mm or more rain3019198711
50 mm (1.97 in): Days with 50 mm or more rain25519951
100 mm (3.94 in): Days with 100 mm or more rain2119901
10 cm (3.9 in): Days with 10 cm or more snowfall20419901
25 cm (9.8 in): Days with 25 cm or more snowfall2119891

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1971.

Download the Data

  • Data for Cahokia 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).