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

Stillwater Threshold Days by Year (CA008205600)

17 fixed thresholds counted per year at Stillwater (CA008205600): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Stillwater Thresholds

  • Stillwater: days with a maximum temperature at or below 0 C (32 F) in 47 years, most in 1918 with 81.
  • Stillwater: nights with a minimum temperature at or below 0 C (32 F) in 47 years, most in 1916 with 217.
  • Stillwater: nights with a minimum temperature at or below -10 C (14 F) in 47 years, most in 1939 with 92.
  • Stillwater: nights with a minimum temperature at or below -20 C (-4 F) in 46 years, most in 1923 with 41.
  • 17 fixed thresholds have at least one qualifying day at Stillwater.
34 years with a qualifying day
Days at or above 30 C (86 F) per year at Stillwater Days per year at Stillwater with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 11 in 1944. 0510151918: 21920: 21921: 41922: 11923: 11924: 31926: 31928: 51929: 11930: 41933: 11935: 71937: 51938: 11939: 41940: 31941: 11942: 41943: 41944: 111945: 41946: 11947: 81948: 11949: 81950: 11952: 41953: 11954: 11955: 11959: 11960: 31961: 11965: 2191819231929193719411945194919541961
Days per year at Stillwater with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 11 in 1944.
Days at or above 30 C (86 F) per year at Stillwater
YearDaysDecade average
191822
192022.5
192142.5
192212.5
192312.5
192432.5
192632.5
192852.5
192912.5
193043.7
193313.7
193573.7
193753.7
193813.7
193943.7
194034.5
194114.5
194244.5
194344.5
1944114.5
194544.5
194614.5
194784.5
194814.5
194984.5
195011.5
195241.5
195311.5
195411.5
195511.5
195911.5
196032
196112
196522
First to last qualifying date each year at Stillwater For each year, a bar from the first to the last day at Stillwater meeting 30 C (86 F). 1918: 18 May 1918 to 27 July 19181920: 8 August 1920 to 28 August 19201921: 7 July 1921 to 2 September 19211922: 8 June 1922 to 8 June 19221923: 18 July 1923 to 18 July 19231924: 6 July 1924 to 12 July 19241926: 28 July 1926 to 4 August 19261928: 21 July 1928 to 18 August 19281929: 12 July 1929 to 12 July 19291930: 12 June 1930 to 17 June 19301933: 23 August 1933 to 23 August 19331935: 14 July 1935 to 20 August 19351937: 31 May 1937 to 31 August 19371938: 3 August 1938 to 3 August 19381939: 5 July 1939 to 24 August 19391940: 4 August 1940 to 18 August 19401941: 22 June 1941 to 22 June 19411942: 12 June 1942 to 2 September 19421943: 25 June 1943 to 14 July 19431944: 26 May 1944 to 15 August 19441945: 18 July 1945 to 8 September 19451946: 27 June 1946 to 27 June 19461947: 29 June 1947 to 11 September 19471948: 18 July 1948 to 18 July 19481949: 4 June 1949 to 27 August 19491950: 8 June 1950 to 8 June 19501952: 8 July 1952 to 28 August 19521953: 8 July 1953 to 8 July 19531954: 22 June 1954 to 22 June 19541955: 22 August 1955 to 22 August 19551959: 28 July 1959 to 28 July 19591960: 18 August 1960 to 8 September 19601961: 11 September 1961 to 11 September 19611965: 22 June 1965 to 22 September 19651918192419331940194519501959JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Stillwater meeting 30 C (86 F).
First to last qualifying date each year at Stillwater
YearFirst dateLast date
19181918-05-181918-07-27
19201920-08-081920-08-28
19211921-07-071921-09-02
19221922-06-081922-06-08
19231923-07-181923-07-18
19241924-07-061924-07-12
19261926-07-281926-08-04
19281928-07-211928-08-18
19291929-07-121929-07-12
19301930-06-121930-06-17
19331933-08-231933-08-23
19351935-07-141935-08-20
19371937-05-311937-08-31
19381938-08-031938-08-03
19391939-07-051939-08-24
19401940-08-041940-08-18
19411941-06-221941-06-22
19421942-06-121942-09-02
19431943-06-251943-07-14
19441944-05-261944-08-15
19451945-07-181945-09-08
19461946-06-271946-06-27
19471947-06-291947-09-11
19481948-07-181948-07-18
19491949-06-041949-08-27
19501950-06-081950-06-08
19521952-07-081952-08-28
19531953-07-081953-07-08
19541954-06-221954-06-22
19551955-08-221955-08-22
19591959-07-281959-07-28
19601960-08-181960-09-08
19611961-09-111961-09-11
19651965-06-221965-09-22

Every Fixed Threshold

Fixed thresholds at Stillwater
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days341119442
35 C (95 F): Days3119351
90 F (32.2 C): Days13519442
0 C (32 F): Ice days (max4781191834
0 C (32 F): Frost days (min472171916181
-10 C (14 F): Days with min4792193933
-20 C (-4 F): Days with min464119235
-30 C (-22 F): Days with min25619341
-40 C (-40 F): Days with min1119341
20 C (68 F): Tropical nights (min7319371
10 mm (0.39 in): Days with 10 mm or more rain4157193328
25 mm (0.98 in): Days with 25 mm or more rain411919338
50 mm (1.97 in): Days with 50 mm or more rain34719432
100 mm (3.94 in): Days with 100 mm or more rain4119241
10 cm (3.9 in): Days with 10 cm or more snowfall431219212
25 cm (9.8 in): Days with 25 cm or more snowfall13319521
50 cm (19.7 in): Days with 50 cm or more snowfall1119441

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1918.

Download the Data

  • Data for Stillwater 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).