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Built 2026-10-19 (19 October 2026)

St Louis Sci Ctr Threshold Days by Year (USC00237452)

17 fixed thresholds counted per year at St Louis Sci Ctr (USC00237452): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St Louis Sci Ctr Thresholds

  • St Louis Sci Ctr: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 2009 with 50.
  • St Louis Sci Ctr: days with 25 mm (0.98 in) or more of precipitation in 35 years, most in 2009 with 21.
  • St Louis Sci Ctr: days with 50 mm (1.97 in) or more of precipitation in 30 years, most in 2009 with 6.
  • St Louis Sci Ctr: nights with a minimum temperature at or below 0 C (32 F) in 29 years, most in 1972 with 105.
  • 17 fixed thresholds have at least one qualifying day at St Louis Sci Ctr.
28 years with a qualifying day
Days at or above 30 C (86 F) per year at St Louis Sci Ctr Days per year at St Louis Sci Ctr with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 106 in 2010. 0501001501969: 861970: 931971: 971972: 721973: 721975: 821976: 701977: 841988: 851990: 691993: 681994: 751995: 681996: 651997: 701998: 841999: 662004: 572005: 802006: 822007: 952009: 522010: 1062011: 832012: 952013: 682014: 642016: 881969197219761990199519982005200920122016
Days per year at St Louis Sci Ctr with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 106 in 2010.
Days at or above 30 C (86 F) per year at St Louis Sci Ctr
YearDaysDecade average
19698686
19709381.4
19719781.4
19727281.4
19737281.4
19758281.4
19767081.4
19778481.4
19888585
19906970.6
19936870.6
19947570.6
19956870.6
19966570.6
19977070.6
19988470.6
19996670.6
20045773.2
20058073.2
20068273.2
20079573.2
20095273.2
201010684
20118384
20129584
20136884
20146484
20168884
First to last qualifying date each year at St Louis Sci Ctr For each year, a bar from the first to the last day at St Louis Sci Ctr meeting 30 C (86 F). 1969: 27 May 1969 to 5 October 19691970: 28 April 1970 to 22 September 19701971: 12 April 1971 to 3 October 19711972: 20 May 1972 to 25 September 19721973: 9 June 1973 to 3 September 19731975: 19 May 1975 to 22 October 19751976: 16 April 1976 to 13 October 19761977: 11 April 1977 to 18 September 19771988: 6 April 1988 to 23 September 19881990: 25 April 1990 to 6 October 19901993: 9 May 1993 to 13 September 19931994: 15 April 1994 to 2 October 19941995: 14 May 1995 to 14 October 19951996: 10 May 1996 to 12 September 19961997: 22 March 1997 to 12 October 19971998: 14 May 1998 to 30 September 19981999: 5 June 1999 to 28 September 19992004: 18 April 2004 to 24 September 20042005: 11 May 2005 to 6 October 20052006: 14 April 2006 to 5 October 20062007: 30 April 2007 to 1 November 20072009: 25 April 2009 to 28 August 20092010: 1 April 2010 to 11 October 20102011: 4 April 2011 to 26 October 20112012: 15 March 2012 to 14 September 20122013: 1 May 2013 to 5 October 20132014: 6 May 2014 to 2 October 20142016: 26 April 2016 to 30 October 20161969197319881995199920072012JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at St Louis Sci Ctr meeting 30 C (86 F).
First to last qualifying date each year at St Louis Sci Ctr
YearFirst dateLast date
19691969-05-271969-10-05
19701970-04-281970-09-22
19711971-04-121971-10-03
19721972-05-201972-09-25
19731973-06-091973-09-03
19751975-05-191975-10-22
19761976-04-161976-10-13
19771977-04-111977-09-18
19881988-04-061988-09-23
19901990-04-251990-10-06
19931993-05-091993-09-13
19941994-04-151994-10-02
19951995-05-141995-10-14
19961996-05-101996-09-12
19971997-03-221997-10-12
19981998-05-141998-09-30
19991999-06-051999-09-28
20042004-04-182004-09-24
20052005-05-112005-10-06
20062006-04-142006-10-05
20072007-04-302007-11-01
20092009-04-252009-08-28
20102010-04-012010-10-11
20112011-04-042011-10-26
20122012-03-152012-09-14
20132013-05-012013-10-05
20142014-05-062014-10-02
20162016-04-262016-10-30

Every Fixed Threshold

Fixed thresholds at St Louis Sci Ctr
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days28106201088
35 C (95 F): Days2841201216
40 C (104 F): Days610201210
90 F (32.2 C): Days2876201063
100 F (37.8 C): Days172020122
0 C (32 F): Ice days (max2840197718
0 C (32 F): Frost days (min29105197259
-10 C (14 F): Days with min284019778
-20 C (-4 F): Days with min6619772
20 C (68 F): Tropical nights (min2994201087
25 C (77 F): Days with min2926201112
10 mm (0.39 in): Days with 10 mm or more rain3550200923
25 mm (0.98 in): Days with 25 mm or more rain352120099
50 mm (1.97 in): Days with 50 mm or more rain30620091
100 mm (3.94 in): Days with 100 mm or more rain3120161
10 cm (3.9 in): Days with 10 cm or more snowfall18219732
25 cm (9.8 in): Days with 25 cm or more snowfall1119731

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.

Download the Data

  • Data for St Louis Sci Ctr 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 (2026-10-16).