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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Fort Simpson Threshold Days by Year (CA002202115)

8 fixed thresholds counted per year at Fort Simpson (CA002202115): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Fort Simpson Thresholds

  • 8 fixed thresholds have at least one qualifying day at Fort Simpson.
4 years with a qualifying day
Nights at or below 0 C (32 F) per year at Fort Simpson Days per year at Fort Simpson with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. 01002003001958: 2161978: 2111980: 2131981: 2251958197819801981
Days per year at Fort Simpson with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line.
Nights at or below 0 C (32 F) per year at Fort Simpson
YearDaysDecade average
1958216216
1978211211
1980213219
1981225219
First to last qualifying date each year at Fort Simpson For each year, a bar from the first to the last day at Fort Simpson meeting 0 C (32 F). 1958: 1 January 1958 to 31 December 19581978: 1 January 1978 to 31 December 19781980: 1 January 1980 to 31 December 19801981: 1 January 1981 to 31 December 19811958197819801981JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Fort Simpson meeting 0 C (32 F).
First to last qualifying date each year at Fort Simpson
YearFirst dateLast date
19581958-01-011958-12-31
19781978-01-011978-12-31
19801980-01-011980-12-31
19811981-01-011981-12-31

Every Fixed Threshold

Fixed thresholds at Fort Simpson
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
0 C (32 F): Frost days (min40n/a225
-10 C (14 F): Days with min40n/a155
-20 C (-4 F): Days with min40n/a90
-30 C (-22 F): Days with min40n/a19
-40 C (-40 F): Days with min40n/a2
10 mm (0.39 in): Days with 10 mm or more rain20n/a3
25 mm (0.98 in): Days with 25 mm or more rain10n/a2
50 mm (1.97 in): Days with 50 mm or more rain10n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

  • Data for Fort Simpson 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).