Built 2026-10-18 (18 October 2026)

Souris Threshold Days by Year

19 fixed thresholds counted per year at Souris (CA005012720): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Souris Thresholds

  • Souris: days with a maximum temperature at or above 30 C (86 F) in 52 years, most in 1936 with 42.
  • Souris: days with a maximum temperature at or below 0 C (32 F) in 52 years, most in 1919 with 143.
  • Souris: nights with a minimum temperature at or below 0 C (32 F) in 52 years, most in 1959 with 231.
  • Souris: nights with a minimum temperature at or below -10 C (14 F) in 52 years, most in 1919 with 133.
  • 19 fixed thresholds have at least one qualifying day at Souris.
52 years with a qualifying day
Days at or above 30 C (86 F) per year at Souris Days per year at Souris with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 42 in 1936. 02040601915: 131916: 111917: 201918: 111919: 211920: 251921: 251922: 191923: 201924: 71925: 161926: 141927: 51928: 81929: 301931: 321932: 191933: 331934: 271935: 161936: 421937: 231938: 281939: 281940: 341941: 251942: 111943: 161944: 91945: 121946: 201947: 191948: 151949: 281950: 31951: 101952: 181953: 191954: 51956: 141957: 121958: 161959: 161960: 211961: 381962: 51963: 201964: 131965: 81966: 221967: 231968: 7191519211927193419401946195219591965
Days per year at Souris with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 42 in 1936.
Days at or above 30 C (86 F) per year at Souris
YearDaysDecade average
19151315.2
19161115.2
19172015.2
19181115.2
19192115.2
19202516.9
19212516.9
19221916.9
19232016.9
1924716.9
19251616.9
19261416.9
1927516.9
1928816.9
19293016.9
19313227.6
19321927.6
19333327.6
19342727.6
19351627.6
19364227.6
19372327.6
19382827.6
19392827.6
19403418.9
19412518.9
19421118.9
19431618.9
1944918.9
19451218.9
19462018.9
19471918.9
19481518.9
19492818.9
1950312.6
19511012.6
19521812.6
19531912.6
1954512.6
19561412.6
19571212.6
19581612.6
19591612.6
19602117.4
19613817.4
1962517.4
19632017.4
19641317.4
1965817.4
19662217.4
19672317.4
1968717.4
First to last qualifying date each year at Souris For each year, a bar from the first to the last day at Souris meeting 30 C (86 F). 1915: 12 July 1915 to 5 September 19151916: 5 July 1916 to 18 August 19161917: 15 May 1917 to 23 September 19171918: 4 May 1918 to 9 August 19181919: 24 May 1919 to 19 August 19191920: 13 June 1920 to 7 October 19201921: 26 June 1921 to 31 August 19211922: 3 June 1922 to 1 October 19221923: 26 May 1923 to 15 September 19231924: 4 July 1924 to 2 September 19241925: 19 May 1925 to 2 September 19251926: 29 April 1926 to 26 August 19261927: 26 June 1927 to 13 September 19271928: 21 May 1928 to 12 August 19281929: 9 June 1929 to 1 September 19291931: 14 May 1931 to 7 September 19311932: 13 May 1932 to 8 September 19321933: 31 May 1933 to 20 August 19331934: 5 May 1934 to 17 August 19341935: 28 June 1935 to 10 August 19351936: 27 May 1936 to 3 September 19361937: 3 June 1937 to 2 September 19371938: 2 June 1938 to 22 September 19381939: 28 May 1939 to 11 September 19391940: 11 May 1940 to 16 September 19401941: 17 May 1941 to 10 August 19411942: 9 June 1942 to 9 September 19421943: 22 May 1943 to 28 September 19431944: 15 May 1944 to 29 July 19441945: 21 June 1945 to 4 September 19451946: 30 April 1946 to 16 September 19461947: 3 July 1947 to 22 August 19471948: 19 May 1948 to 3 September 19481949: 28 April 1949 to 22 August 19491950: 10 July 1950 to 29 July 19501951: 23 May 1951 to 29 July 19511952: 27 April 1952 to 25 August 19521953: 6 May 1953 to 31 August 19531954: 23 June 1954 to 31 August 19541956: 21 May 1956 to 26 September 19561957: 10 July 1957 to 6 August 19571958: 12 May 1958 to 1 September 19581959: 5 June 1959 to 24 August 19591960: 12 May 1960 to 20 September 19601961: 23 May 1961 to 31 August 19611962: 27 June 1962 to 21 August 19621963: 30 May 1963 to 4 October 19631964: 20 May 1964 to 17 September 19641965: 3 July 1965 to 23 August 19651966: 21 May 1966 to 30 August 19661967: 29 June 1967 to 6 September 19671968: 3 June 1968 to 14 September 196819151922192919371944195119591966JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Souris meeting 30 C (86 F).
First to last qualifying date each year at Souris
YearFirst dateLast date
19151915-07-121915-09-05
19161916-07-051916-08-18
19171917-05-151917-09-23
19181918-05-041918-08-09
19191919-05-241919-08-19
19201920-06-131920-10-07
19211921-06-261921-08-31
19221922-06-031922-10-01
19231923-05-261923-09-15
19241924-07-041924-09-02
19251925-05-191925-09-02
19261926-04-291926-08-26
19271927-06-261927-09-13
19281928-05-211928-08-12
19291929-06-091929-09-01
19311931-05-141931-09-07
19321932-05-131932-09-08
19331933-05-311933-08-20
19341934-05-051934-08-17
19351935-06-281935-08-10
19361936-05-271936-09-03
19371937-06-031937-09-02
19381938-06-021938-09-22
19391939-05-281939-09-11
19401940-05-111940-09-16
19411941-05-171941-08-10
19421942-06-091942-09-09
19431943-05-221943-09-28
19441944-05-151944-07-29
19451945-06-211945-09-04
19461946-04-301946-09-16
19471947-07-031947-08-22
19481948-05-191948-09-03
19491949-04-281949-08-22
19501950-07-101950-07-29
19511951-05-231951-07-29
19521952-04-271952-08-25
19531953-05-061953-08-31
19541954-06-231954-08-31
19561956-05-211956-09-26
19571957-07-101957-08-06
19581958-05-121958-09-01
19591959-06-051959-08-24
19601960-05-121960-09-20
19611961-05-231961-08-31
19621962-06-271962-08-21
19631963-05-301963-10-04
19641964-05-201964-09-17
19651965-07-031965-08-23
19661966-05-211966-08-30
19671967-06-291967-09-06
19681968-06-031968-09-14

Every Fixed Threshold

Fixed thresholds at Souris
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days524219367
35 C (95 F): Days311619361
40 C (104 F): Days2219362
90 F (32.2 C): Days503219364
100 F (37.8 C): Days7519361
0 C (32 F): Ice days (max521431919113
0 C (32 F): Frost days (min522311959195
-10 C (14 F): Days with min52133191997
-20 C (-4 F): Days with min5281193647
-30 C (-22 F): Days with min5240193615
-40 C (-40 F): Days with min19919361
20 C (68 F): Tropical nights (min30819362
10 mm (0.39 in): Days with 10 mm or more rain3822193513
25 mm (0.98 in): Days with 25 mm or more rain34819335
50 mm (1.97 in): Days with 50 mm or more rain14219561
100 mm (3.94 in): Days with 100 mm or more rain1119601
10 cm (3.9 in): Days with 10 cm or more snowfall38919163
25 cm (9.8 in): Days with 25 cm or more snowfall14219161
50 cm (19.7 in): Days with 50 cm or more snowfall2119241

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1915.

Download the Data

  • Data for Souris 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 (2026-10-17).