Built 2026-10-19 (19 October 2026)

Montreal River Threshold Days by Year (CA006075379)

19 fixed thresholds counted per year at Montreal River (CA006075379): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Montreal River Thresholds

  • Montreal River: days with a maximum temperature at or below 0 C (32 F) in 56 years, most in 1940 with 116.
  • Montreal River: days with 10 mm (0.39 in) or more of precipitation in 56 years, most in 1919 with 36.
  • Montreal River: days with a maximum temperature at or above 30 C (86 F) in 55 years, most in 1919 with 36.
  • Montreal River: days with 10 cm (3.9 in) or more of snowfall in 55 years, most in 1918 with 10.
  • 19 fixed thresholds have at least one qualifying day at Montreal River.
55 years with a qualifying day
Days at or above 30 C (86 F) per year at Montreal River Days per year at Montreal River with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 36 in 1919. 0102030401911: 151912: 111913: 191914: 211915: 81916: 281917: 141918: 131919: 361920: 121921: 351922: 141923: 151924: 101925: 171926: 91927: 51928: 101929: 141930: 71931: 231932: 51933: 131934: 121935: 141936: 131937: 261938: 231939: 171940: 41941: 101942: 111943: 71944: 191945: 91946: 61947: 181948: 91949: 171950: 31951: 31952: 91953: 121954: 21955: 311956: 71957: 121958: 71959: 111960: 21961: 41962: 121963: 151964: 111966: 101911191719231929193519411947195319591966
Days per year at Montreal River with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 36 in 1919.
Days at or above 30 C (86 F) per year at Montreal River
YearDaysDecade average
19111518.3
19121118.3
19131918.3
19142118.3
1915818.3
19162818.3
19171418.3
19181318.3
19193618.3
19201214.1
19213514.1
19221414.1
19231514.1
19241014.1
19251714.1
1926914.1
1927514.1
19281014.1
19291414.1
1930715.3
19312315.3
1932515.3
19331315.3
19341215.3
19351415.3
19361315.3
19372615.3
19382315.3
19391715.3
1940411
19411011
19421111
1943711
19441911
1945911
1946611
19471811
1948911
19491711
195039.7
195139.7
195299.7
1953129.7
195429.7
1955319.7
195679.7
1957129.7
195879.7
1959119.7
196029
196149
1962129
1963159
1964119
1966109
First to last qualifying date each year at Montreal River For each year, a bar from the first to the last day at Montreal River meeting 30 C (86 F). 1911: 18 May 1911 to 7 August 19111912: 28 June 1912 to 14 July 19121913: 11 June 1913 to 17 August 19131914: 26 May 1914 to 21 September 19141915: 25 April 1915 to 11 August 19151916: 13 June 1916 to 22 August 19161917: 26 June 1917 to 18 September 19171918: 5 July 1918 to 13 August 19181919: 28 May 1919 to 7 September 19191920: 10 June 1920 to 26 September 19201921: 26 April 1921 to 2 September 19211922: 5 June 1922 to 23 September 19221923: 25 May 1923 to 31 July 19231924: 21 June 1924 to 31 August 19241925: 2 June 1925 to 30 August 19251926: 31 May 1926 to 3 August 19261927: 29 June 1927 to 16 July 19271928: 2 July 1928 to 16 August 19281929: 28 May 1929 to 5 September 19291930: 23 May 1930 to 3 August 19301931: 6 May 1931 to 12 September 19311932: 13 June 1932 to 31 August 19321933: 7 June 1933 to 3 September 19331934: 3 June 1934 to 9 August 19341935: 3 July 1935 to 20 August 19351936: 9 June 1936 to 15 September 19361937: 29 May 1937 to 26 August 19371938: 19 June 1938 to 19 August 19381939: 23 May 1939 to 15 September 19391940: 2 June 1940 to 30 July 19401941: 19 June 1941 to 30 July 19411942: 1 May 1942 to 1 September 19421943: 24 June 1943 to 14 July 19431944: 25 May 1944 to 15 August 19441945: 24 June 1945 to 8 September 19451946: 27 June 1946 to 8 August 19461947: 10 June 1947 to 6 September 19471948: 3 June 1948 to 27 August 19481949: 12 June 1949 to 26 August 19491950: 25 May 1950 to 24 June 19501951: 6 July 1951 to 29 July 19511952: 2 July 1952 to 13 September 19521953: 21 June 1953 to 4 September 19531954: 24 June 1954 to 25 June 19541955: 5 June 1955 to 21 August 19551956: 6 June 1956 to 8 August 19561957: 7 May 1957 to 7 August 19571958: 23 July 1958 to 6 August 19581959: 8 June 1959 to 20 August 19591960: 10 July 1960 to 7 September 19601961: 29 June 1961 to 10 September 19611962: 16 May 1962 to 31 August 19621963: 5 June 1963 to 28 July 19631964: 22 May 1964 to 28 July 19641966: 23 June 1966 to 12 July 196619111918192519321939194619531960JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Montreal River meeting 30 C (86 F).
First to last qualifying date each year at Montreal River
YearFirst dateLast date
19111911-05-181911-08-07
19121912-06-281912-07-14
19131913-06-111913-08-17
19141914-05-261914-09-21
19151915-04-251915-08-11
19161916-06-131916-08-22
19171917-06-261917-09-18
19181918-07-051918-08-13
19191919-05-281919-09-07
19201920-06-101920-09-26
19211921-04-261921-09-02
19221922-06-051922-09-23
19231923-05-251923-07-31
19241924-06-211924-08-31
19251925-06-021925-08-30
19261926-05-311926-08-03
19271927-06-291927-07-16
19281928-07-021928-08-16
19291929-05-281929-09-05
19301930-05-231930-08-03
19311931-05-061931-09-12
19321932-06-131932-08-31
19331933-06-071933-09-03
19341934-06-031934-08-09
19351935-07-031935-08-20
19361936-06-091936-09-15
19371937-05-291937-08-26
19381938-06-191938-08-19
19391939-05-231939-09-15
19401940-06-021940-07-30
19411941-06-191941-07-30
19421942-05-011942-09-01
19431943-06-241943-07-14
19441944-05-251944-08-15
19451945-06-241945-09-08
19461946-06-271946-08-08
19471947-06-101947-09-06
19481948-06-031948-08-27
19491949-06-121949-08-26
19501950-05-251950-06-24
19511951-07-061951-07-29
19521952-07-021952-09-13
19531953-06-211953-09-04
19541954-06-241954-06-25
19551955-06-051955-08-21
19561956-06-061956-08-08
19571957-05-071957-08-07
19581958-07-231958-08-06
19591959-06-081959-08-20
19601960-07-101960-09-07
19611961-06-291961-09-10
19621962-05-161962-08-31
19631963-06-051963-07-28
19641964-05-221964-07-28
19661966-06-231966-07-12

Every Fixed Threshold

Fixed thresholds at Montreal River
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days5536191910
35 C (95 F): Days221219211
90 F (32.2 C): Days462219217
100 F (37.8 C): Days6419212
0 C (32 F): Ice days (max56116194090
0 C (32 F): Frost days (min522511926205
-10 C (14 F): Days with min52134192690
-20 C (-4 F): Days with min5284191741
-30 C (-22 F): Days with min5243194310
-40 C (-40 F): Days with min291019341
20 C (68 F): Tropical nights (min111119162
25 C (77 F): Days with min1119161
10 mm (0.39 in): Days with 10 mm or more rain5636191927
25 mm (0.98 in): Days with 25 mm or more rain54719125
50 mm (1.97 in): Days with 50 mm or more rain15319601
100 mm (3.94 in): Days with 100 mm or more rain2119321
10 cm (3.9 in): Days with 10 cm or more snowfall551019185
25 cm (9.8 in): Days with 25 cm or more snowfall10219121
50 cm (19.7 in): Days with 50 cm or more snowfall1119651

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1911.

Download the Data

  • Data for Montreal River 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).