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

Saint Louis Threshold Days by Year (SGM00061600)

11 fixed thresholds counted per year at Saint Louis (SGM00061600): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Saint Louis Thresholds

  • Saint Louis: days with a maximum temperature at or above 30 C (86 F) in 12 years, most in 1979 with 285.
  • Saint Louis: days with a maximum temperature at or above 35 C (95 F) in 12 years, most in 1978 with 90.
  • Saint Louis: days with a maximum temperature at or above 40 C (104 F) in 12 years, most in 1996 with 20.
  • Saint Louis: days with a maximum temperature at or above 90 F (32.2 C) in 12 years, most in 1996 with 173.
  • 11 fixed thresholds have at least one qualifying day at Saint Louis.
12 years with a qualifying day
Days at or above 30 C (86 F) per year at Saint Louis Days per year at Saint Louis with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 285 in 1979. 01002003001976: 2311978: 2461979: 2851980: 2401982: 2241988: 2221992: 2241993: 2051994: 2281995: 2341996: 2512025: 131197619791982199219941996
Days per year at Saint Louis with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 285 in 1979.
Days at or above 30 C (86 F) per year at Saint Louis
YearDaysDecade average
1976231254
1978246254
1979285254
1980240228.7
1982224228.7
1988222228.7
1992224228.4
1993205228.4
1994228228.4
1995234228.4
1996251228.4
2025131131
First to last qualifying date each year at Saint Louis For each year, a bar from the first to the last day at Saint Louis meeting 30 C (86 F). 1976: 6 January 1976 to 20 December 19761978: 1 January 1978 to 31 December 19781979: 1 January 1979 to 31 December 19791980: 1 January 1980 to 31 December 19801982: 2 January 1982 to 31 December 19821988: 3 January 1988 to 31 December 19881992: 1 January 1992 to 28 December 19921993: 14 January 1993 to 26 December 19931994: 3 January 1994 to 31 December 19941995: 1 January 1995 to 31 December 19951996: 1 January 1996 to 30 December 19962025: 1 January 2025 to 24 August 2025197619791982199219941996JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Saint Louis meeting 30 C (86 F).
First to last qualifying date each year at Saint Louis
YearFirst dateLast date
19761976-01-061976-12-20
19781978-01-011978-12-31
19791979-01-011979-12-31
19801980-01-011980-12-31
19821982-01-021982-12-31
19881988-01-031988-12-31
19921992-01-011992-12-28
19931993-01-141993-12-26
19941994-01-031994-12-31
19951995-01-011995-12-31
19961996-01-011996-12-30
20252025-01-012025-08-24

Every Fixed Threshold

Fixed thresholds at Saint Louis
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days122851979131
35 C (95 F): Days1290197820
40 C (104 F): Days122019962
45 C (113 F): Days2119791
90 F (32.2 C): Days12173199674
100 F (37.8 C): Days123619963
110 F (43.3 C): Days4319791
20 C (68 F): Tropical nights (min10n/a59
25 C (77 F): Days with min10n/a20
10 mm (0.39 in): Days with 10 mm or more rain5919784
25 mm (0.98 in): Days with 25 mm or more rain4419802

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1976.

Download the Data

  • Data for Saint Louis 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).