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Built 2026-10-19 (19 October 2026)

Mascoutah Threshold Days by Year (USC00115405)

19 fixed thresholds counted per year at Mascoutah (USC00115405): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mascoutah Thresholds

  • Mascoutah: days with 10 mm (0.39 in) or more of precipitation in 49 years, most in 1898 with 46.
  • Mascoutah: days with 25 mm (0.98 in) or more of precipitation in 49 years, most in 1898 with 20.
  • Mascoutah: nights with a minimum temperature at or below 0 C (32 F) in 47 years, most in 1904 with 125.
  • Mascoutah: nights with a minimum temperature at or below -10 C (14 F) in 47 years, most in 1899 with 35.
  • 19 fixed thresholds have at least one qualifying day at Mascoutah.
46 years with a qualifying day
Days at or above 30 C (86 F) per year at Mascoutah Days per year at Mascoutah with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 120 in 1936. 0501001501898: 701899: 911901: 971903: 391904: 231905: 401908: 1141909: 1051910: 1021911: 1181912: 941913: 1001914: 1021915: 571916: 941917: 751918: 941919: 971920: 741921: 991922: 911923: 681924: 671925: 1021926: 951927: 611928: 691929: 751930: 921931: 921932: 941933: 1091934: 951935: 771936: 1201937: 961938: 931939: 1051940: 1021941: 1131942: 861943: 851944: 1071945: 711946: 741947: 901898190519121917192219271932193719421947
Days per year at Mascoutah with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 120 in 1936.
Days at or above 30 C (86 F) per year at Mascoutah
YearDaysDecade average
18987080.5
18999180.5
19019769.7
19033969.7
19042369.7
19054069.7
190811469.7
190910569.7
191010293.3
191111893.3
19129493.3
191310093.3
191410293.3
19155793.3
19169493.3
19177593.3
19189493.3
19199793.3
19207480.1
19219980.1
19229180.1
19236880.1
19246780.1
192510280.1
19269580.1
19276180.1
19286980.1
19297580.1
19309297.3
19319297.3
19329497.3
193310997.3
19349597.3
19357797.3
193612097.3
19379697.3
19389397.3
193910597.3
194010291
194111391
19428691
19438591
194410791
19457191
19467491
19479091
First to last qualifying date each year at Mascoutah For each year, a bar from the first to the last day at Mascoutah meeting 30 C (86 F). 1898: 23 May 1898 to 4 October 18981899: 28 April 1899 to 15 October 18991901: 28 April 1901 to 1 October 19011903: 16 May 1903 to 14 September 19031904: 24 May 1904 to 9 October 19041905: 10 May 1905 to 1 September 19051908: 20 April 1908 to 20 October 19081909: 18 April 1909 to 8 October 19091910: 22 March 1910 to 18 October 19101911: 8 May 1911 to 15 October 19111912: 2 May 1912 to 11 October 19121913: 15 May 1913 to 17 September 19131914: 5 May 1914 to 6 October 19141915: 19 April 1915 to 26 September 19151916: 7 May 1916 to 8 October 19161917: 19 May 1917 to 15 October 19171918: 9 May 1918 to 6 October 19181919: 4 May 1919 to 3 October 19191920: 22 May 1920 to 26 September 19201921: 20 May 1921 to 28 September 19211922: 10 May 1922 to 22 October 19221923: 30 May 1923 to 11 October 19231924: 16 April 1924 to 19 October 19241925: 12 April 1925 to 30 September 19251926: 30 April 1926 to 3 October 19261927: 3 June 1927 to 6 October 19271928: 10 May 1928 to 13 October 19281929: 24 March 1929 to 29 September 19291930: 10 April 1930 to 23 September 19301931: 16 May 1931 to 4 October 19311932: 2 April 1932 to 17 September 19321933: 13 March 1933 to 31 October 19331934: 7 May 1934 to 26 September 19341935: 12 May 1935 to 13 October 19351936: 14 April 1936 to 26 September 19361937: 17 April 1937 to 5 October 19371938: 19 April 1938 to 17 October 19381939: 17 May 1939 to 23 October 19391940: 31 March 1940 to 27 October 19401941: 12 April 1941 to 6 October 19411942: 11 May 1942 to 9 October 19421943: 5 May 1943 to 1 October 19431944: 12 May 1944 to 7 October 19441945: 26 May 1945 to 23 September 19451946: 1 April 1946 to 8 October 19461947: 14 May 1947 to 22 October 194718981908191419201926193219381944JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mascoutah meeting 30 C (86 F).
First to last qualifying date each year at Mascoutah
YearFirst dateLast date
18981898-05-231898-10-04
18991899-04-281899-10-15
19011901-04-281901-10-01
19031903-05-161903-09-14
19041904-05-241904-10-09
19051905-05-101905-09-01
19081908-04-201908-10-20
19091909-04-181909-10-08
19101910-03-221910-10-18
19111911-05-081911-10-15
19121912-05-021912-10-11
19131913-05-151913-09-17
19141914-05-051914-10-06
19151915-04-191915-09-26
19161916-05-071916-10-08
19171917-05-191917-10-15
19181918-05-091918-10-06
19191919-05-041919-10-03
19201920-05-221920-09-26
19211921-05-201921-09-28
19221922-05-101922-10-22
19231923-05-301923-10-11
19241924-04-161924-10-19
19251925-04-121925-09-30
19261926-04-301926-10-03
19271927-06-031927-10-06
19281928-05-101928-10-13
19291929-03-241929-09-29
19301930-04-101930-09-23
19311931-05-161931-10-04
19321932-04-021932-09-17
19331933-03-131933-10-31
19341934-05-071934-09-26
19351935-05-121935-10-13
19361936-04-141936-09-26
19371937-04-171937-10-05
19381938-04-191938-10-17
19391939-05-171939-10-23
19401940-03-311940-10-27
19411941-04-121941-10-06
19421942-05-111942-10-09
19431943-05-051943-10-01
19441944-05-121944-10-07
19451945-05-261945-09-23
19461946-04-011946-10-08
19471947-05-141947-10-22

Every Fixed Threshold

Fixed thresholds at Mascoutah
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days46120193690
35 C (95 F): Days4467193635
40 C (104 F): Days192619366
45 C (113 F): Days1119341
90 F (32.2 C): Days4697193661
100 F (37.8 C): Days3443193613
110 F (43.3 C): Days2519343
0 C (32 F): Ice days (max4637190415
0 C (32 F): Frost days (min471251904114
-10 C (14 F): Days with min4735189913
-20 C (-4 F): Days with min26919361
20 C (68 F): Tropical nights (min4762192160
25 C (77 F): Days with min23719363
10 mm (0.39 in): Days with 10 mm or more rain4946189823
25 mm (0.98 in): Days with 25 mm or more rain492018984
50 mm (1.97 in): Days with 50 mm or more rain41518932
100 mm (3.94 in): Days with 100 mm or more rain8219042
200 mm (7.87 in): Days with 200 mm or more rain1119461
10 cm (3.9 in): Days with 10 cm or more snowfall22319391

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

Download the Data

  • Data for Mascoutah 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).