Built 2026-10-19 (19 October 2026)

Portage des Roches Threshold Days by Year (CA007066080)

16 fixed thresholds counted per year at Portage des Roches (CA007066080): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Portage des Roches Thresholds

  • Portage des Roches: days with a maximum temperature at or below 0 C (32 F) in 58 years, most in 1933 with 142.
  • Portage des Roches: nights with a minimum temperature at or below 0 C (32 F) in 58 years, most in 1956 with 231.
  • Portage des Roches: nights with a minimum temperature at or below -10 C (14 F) in 58 years, most in 1929 with 136.
  • Portage des Roches: nights with a minimum temperature at or below -20 C (-4 F) in 58 years, most in 1934 with 74.
  • 16 fixed thresholds have at least one qualifying day at Portage des Roches.
56 years with a qualifying day
Days at or above 30 C (86 F) per year at Portage des Roches Days per year at Portage des Roches with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 22 in 1949. 01020301926: 91927: 51928: 31929: 41930: 11931: 41932: 41933: 101934: 31935: 111936: 31937: 101938: 51939: 101940: 21941: 51942: 61943: 51944: 131945: 81946: 61947: 181948: 91949: 221950: 101951: 81952: 71953: 121954: 21955: 161956: 21957: 21959: 101960: 151961: 41962: 31963: 131965: 21966: 11967: 81968: 41969: 51970: 161971: 21972: 51973: 41974: 41975: 151976: 131977: 61978: 71979: 51980: 11981: 31982: 61983: 101926193219381944195019561963197019761982
Days per year at Portage des Roches with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 22 in 1949.
Days at or above 30 C (86 F) per year at Portage des Roches
YearDaysDecade average
192695.3
192755.3
192835.3
192945.3
193016.1
193146.1
193246.1
1933106.1
193436.1
1935116.1
193636.1
1937106.1
193856.1
1939106.1
194029.4
194159.4
194269.4
194359.4
1944139.4
194589.4
194669.4
1947189.4
194899.4
1949229.4
1950107.7
195187.7
195277.7
1953127.7
195427.7
1955167.7
195627.7
195727.7
1959107.7
1960156.1
196146.1
196236.1
1963136.1
196526.1
196616.1
196786.1
196846.1
196956.1
1970167.7
197127.7
197257.7
197347.7
197447.7
1975157.7
1976137.7
197767.7
197877.7
197957.7
198015
198135
198265
1983105
First to last qualifying date each year at Portage des Roches For each year, a bar from the first to the last day at Portage des Roches meeting 30 C (86 F). 1926: 18 June 1926 to 4 August 19261927: 2 July 1927 to 27 July 19271928: 15 August 1928 to 17 August 19281929: 29 May 1929 to 23 July 19291930: 16 June 1930 to 16 June 19301931: 1 July 1931 to 14 September 19311932: 17 May 1932 to 16 August 19321933: 10 June 1933 to 4 September 19331934: 11 July 1934 to 27 September 19341935: 4 June 1935 to 21 August 19351936: 15 June 1936 to 12 July 19361937: 5 July 1937 to 31 August 19371938: 17 June 1938 to 16 August 19381939: 9 June 1939 to 17 September 19391940: 7 July 1940 to 23 July 19401941: 18 June 1941 to 24 July 19411942: 11 June 1942 to 1 September 19421943: 24 June 1943 to 7 September 19431944: 4 May 1944 to 16 August 19441945: 1 July 1945 to 7 September 19451946: 26 June 1946 to 28 September 19461947: 11 June 1947 to 23 August 19471948: 3 June 1948 to 7 September 19481949: 3 June 1949 to 9 August 19491950: 25 May 1950 to 9 August 19501951: 20 May 1951 to 14 September 19511952: 7 July 1952 to 28 August 19521953: 10 May 1953 to 1 September 19531954: 19 June 1954 to 20 June 19541955: 18 June 1955 to 20 August 19551956: 14 June 1956 to 7 August 19561957: 22 June 1957 to 23 June 19571959: 27 May 1959 to 10 September 19591960: 27 May 1960 to 8 September 19601961: 22 July 1961 to 10 August 19611962: 15 June 1962 to 25 August 19621963: 2 June 1963 to 29 July 19631965: 20 June 1965 to 28 June 19651966: 24 May 1966 to 24 May 19661967: 3 June 1967 to 24 July 19671968: 9 July 1968 to 19 July 19681969: 13 June 1969 to 31 August 19691970: 9 June 1970 to 16 August 19701971: 18 June 1971 to 26 July 19711972: 28 May 1972 to 1 September 19721973: 27 June 1973 to 25 July 19731974: 8 June 1974 to 22 August 19741975: 23 June 1975 to 9 August 19751976: 6 June 1976 to 22 August 19761977: 22 May 1977 to 29 August 19771978: 27 May 1978 to 16 August 19781979: 21 June 1979 to 25 July 19791980: 25 June 1980 to 25 June 19801981: 5 June 1981 to 1 August 19811982: 28 May 1982 to 18 July 19821983: 13 June 1983 to 6 September 198319261933194019471954196219701977JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Portage des Roches meeting 30 C (86 F).
First to last qualifying date each year at Portage des Roches
YearFirst dateLast date
19261926-06-181926-08-04
19271927-07-021927-07-27
19281928-08-151928-08-17
19291929-05-291929-07-23
19301930-06-161930-06-16
19311931-07-011931-09-14
19321932-05-171932-08-16
19331933-06-101933-09-04
19341934-07-111934-09-27
19351935-06-041935-08-21
19361936-06-151936-07-12
19371937-07-051937-08-31
19381938-06-171938-08-16
19391939-06-091939-09-17
19401940-07-071940-07-23
19411941-06-181941-07-24
19421942-06-111942-09-01
19431943-06-241943-09-07
19441944-05-041944-08-16
19451945-07-011945-09-07
19461946-06-261946-09-28
19471947-06-111947-08-23
19481948-06-031948-09-07
19491949-06-031949-08-09
19501950-05-251950-08-09
19511951-05-201951-09-14
19521952-07-071952-08-28
19531953-05-101953-09-01
19541954-06-191954-06-20
19551955-06-181955-08-20
19561956-06-141956-08-07
19571957-06-221957-06-23
19591959-05-271959-09-10
19601960-05-271960-09-08
19611961-07-221961-08-10
19621962-06-151962-08-25
19631963-06-021963-07-29
19651965-06-201965-06-28
19661966-05-241966-05-24
19671967-06-031967-07-24
19681968-07-091968-07-19
19691969-06-131969-08-31
19701970-06-091970-08-16
19711971-06-181971-07-26
19721972-05-281972-09-01
19731973-06-271973-07-25
19741974-06-081974-08-22
19751975-06-231975-08-09
19761976-06-061976-08-22
19771977-05-221977-08-29
19781978-05-271978-08-16
19791979-06-211979-07-25
19801980-06-251980-06-25
19811981-06-051981-08-01
19821982-05-281982-07-18
19831983-06-131983-09-06

Every Fixed Threshold

Fixed thresholds at Portage des Roches
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days5622194910
35 C (95 F): Days6319351
90 F (32.2 C): Days361419491
0 C (32 F): Ice days (max581421933105
0 C (32 F): Frost days (min582311956208
-10 C (14 F): Days with min58136192995
-20 C (-4 F): Days with min5874193445
-30 C (-22 F): Days with min5832194811
-40 C (-40 F): Days with min15319451
20 C (68 F): Tropical nights (min31919471
25 C (77 F): Days with min2119441
10 mm (0.39 in): Days with 10 mm or more rain5837198137
25 mm (0.98 in): Days with 25 mm or more rain57819364
50 mm (1.97 in): Days with 50 mm or more rain16219321
10 cm (3.9 in): Days with 10 cm or more snowfall571319749
25 cm (9.8 in): Days with 25 cm or more snowfall20219281

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1926.

Download the Data

  • Data for Portage des Roches 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).