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Built 2026-10-19 (19 October 2026)

Fort Nelson A Threshold Days by Year (CA001192940)

15 fixed thresholds counted per year at Fort Nelson A (CA001192940): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Fort Nelson A Thresholds

  • Fort Nelson A: days with a maximum temperature at or below 0 C (32 F) in 46 years, most in 1961 with 159.
  • Fort Nelson A: nights with a minimum temperature at or below 0 C (32 F) in 46 years, most in 1972 with 232.
  • Fort Nelson A: nights with a minimum temperature at or below -10 C (14 F) in 46 years, most in 1950 with 165.
  • Fort Nelson A: nights with a minimum temperature at or below -20 C (-4 F) in 46 years, most in 1950 with 119.
  • 15 fixed thresholds have at least one qualifying day at Fort Nelson A.
38 years with a qualifying day
Days at or above 30 C (86 F) per year at Fort Nelson A Days per year at Fort Nelson A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 1971. 0358101938: 31939: 61940: 11941: 51942: 91944: 11945: 41946: 31947: 21948: 61949: 21950: 91951: 11952: 41953: 71955: 91956: 11958: 11959: 41960: 21961: 71962: 11963: 21964: 41965: 71966: 31967: 31968: 21969: 31970: 31971: 101972: 11975: 51979: 31980: 11981: 91982: 61983: 31938194219471951195619611965196919751982
Days per year at Fort Nelson A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 1971.
Days at or above 30 C (86 F) per year at Fort Nelson A
YearDaysDecade average
193834.5
193964.5
194013.7
194153.7
194293.7
194413.7
194543.7
194633.7
194723.7
194863.7
194923.7
195094.5
195114.5
195244.5
195374.5
195594.5
195614.5
195814.5
195944.5
196023.4
196173.4
196213.4
196323.4
196443.4
196573.4
196633.4
196733.4
196823.4
196933.4
197034.4
1971104.4
197214.4
197554.4
197934.4
198014.8
198194.8
198264.8
198334.8
First to last qualifying date each year at Fort Nelson A For each year, a bar from the first to the last day at Fort Nelson A meeting 30 C (86 F). 1938: 11 August 1938 to 3 September 19381939: 21 July 1939 to 10 August 19391940: 14 July 1940 to 14 July 19401941: 14 July 1941 to 18 July 19411942: 4 June 1942 to 15 August 19421944: 19 July 1944 to 19 July 19441945: 13 July 1945 to 13 August 19451946: 10 June 1946 to 29 August 19461947: 18 July 1947 to 26 July 19471948: 29 May 1948 to 16 August 19481949: 11 July 1949 to 13 July 19491950: 12 June 1950 to 26 August 19501951: 6 July 1951 to 6 July 19511952: 13 July 1952 to 5 August 19521953: 7 July 1953 to 15 August 19531955: 10 June 1955 to 29 August 19551956: 20 July 1956 to 20 July 19561958: 29 July 1958 to 29 July 19581959: 9 July 1959 to 17 July 19591960: 30 July 1960 to 8 August 19601961: 12 July 1961 to 20 August 19611962: 31 July 1962 to 31 July 19621963: 2 July 1963 to 19 August 19631964: 9 June 1964 to 9 July 19641965: 1 July 1965 to 2 August 19651966: 7 May 1966 to 23 August 19661967: 19 June 1967 to 30 August 19671968: 3 July 1968 to 4 July 19681969: 8 June 1969 to 15 June 19691970: 3 June 1970 to 2 August 19701971: 12 May 1971 to 10 August 19711972: 29 May 1972 to 29 May 19721975: 1 July 1975 to 11 July 19751979: 18 July 1979 to 16 August 19791980: 8 June 1980 to 8 June 19801981: 11 July 1981 to 11 August 19811982: 19 June 1982 to 9 August 19821983: 29 May 1983 to 9 August 198319381944194919551961196619711981JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Fort Nelson A meeting 30 C (86 F).
First to last qualifying date each year at Fort Nelson A
YearFirst dateLast date
19381938-08-111938-09-03
19391939-07-211939-08-10
19401940-07-141940-07-14
19411941-07-141941-07-18
19421942-06-041942-08-15
19441944-07-191944-07-19
19451945-07-131945-08-13
19461946-06-101946-08-29
19471947-07-181947-07-26
19481948-05-291948-08-16
19491949-07-111949-07-13
19501950-06-121950-08-26
19511951-07-061951-07-06
19521952-07-131952-08-05
19531953-07-071953-08-15
19551955-06-101955-08-29
19561956-07-201956-07-20
19581958-07-291958-07-29
19591959-07-091959-07-17
19601960-07-301960-08-08
19611961-07-121961-08-20
19621962-07-311962-07-31
19631963-07-021963-08-19
19641964-06-091964-07-09
19651965-07-011965-08-02
19661966-05-071966-08-23
19671967-06-191967-08-30
19681968-07-031968-07-04
19691969-06-081969-06-15
19701970-06-031970-08-02
19711971-05-121971-08-10
19721972-05-291972-05-29
19751975-07-011975-07-11
19791979-07-181979-08-16
19801980-06-081980-06-08
19811981-07-111981-08-11
19821982-06-191982-08-09
19831983-05-291983-08-09

Every Fixed Threshold

Fixed thresholds at Fort Nelson A
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days381019713
35 C (95 F): Days2119411
90 F (32.2 C): Days18519501
0 C (32 F): Ice days (max461591961151
0 C (32 F): Frost days (min462321972231
-10 C (14 F): Days with min461651950149
-20 C (-4 F): Days with min46119195093
-30 C (-22 F): Days with min4649195113
-40 C (-40 F): Days with min401219661
20 C (68 F): Tropical nights (min1119421
10 mm (0.39 in): Days with 10 mm or more rain462219628
25 mm (0.98 in): Days with 25 mm or more rain30719761
50 mm (1.97 in): Days with 50 mm or more rain4119451
10 cm (3.9 in): Days with 10 cm or more snowfall42619822
25 cm (9.8 in): Days with 25 cm or more snowfall5119441

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1938.

Download the Data

  • Data for Fort Nelson A 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).