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Built 2026-10-19 (19 October 2026)

Norway House A Threshold Days by Year (CA00506B047)

14 fixed thresholds counted per year at Norway House A (CA00506B047): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Norway House A Thresholds

  • Norway House A: days with a maximum temperature at or below 0 C (32 F) in 10 years, most in 1979 with 155.
  • Norway House A: nights with a minimum temperature at or below 0 C (32 F) in 10 years, most in 1974 with 241.
  • Norway House A: nights with a minimum temperature at or below -10 C (14 F) in 10 years, most in 1978 with 153.
  • Norway House A: nights with a minimum temperature at or below -20 C (-4 F) in 10 years, most in 1982 with 109.
  • 14 fixed thresholds have at least one qualifying day at Norway House A.
9 years with a qualifying day
Days at or above 30 C (86 F) per year at Norway House A Days per year at Norway House A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 8 in 1975. 024681974: 31975: 81976: 11977: 21978: 11979: 11980: 11981: 21983: 3197419751976197719781979198019811983
Days per year at Norway House A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 8 in 1975.
Days at or above 30 C (86 F) per year at Norway House A
YearDaysDecade average
197432.7
197582.7
197612.7
197722.7
197812.7
197912.7
198012
198122
198332
First to last qualifying date each year at Norway House A For each year, a bar from the first to the last day at Norway House A meeting 30 C (86 F). 1974: 20 July 1974 to 7 August 19741975: 25 June 1975 to 29 July 19751976: 6 September 1976 to 6 September 19761977: 12 May 1977 to 25 May 19771978: 30 June 1978 to 30 June 19781979: 20 July 1979 to 20 July 19791980: 22 May 1980 to 22 May 19801981: 4 July 1981 to 7 July 19811983: 11 June 1983 to 4 August 198319741976197819801983JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Norway House A meeting 30 C (86 F).
First to last qualifying date each year at Norway House A
YearFirst dateLast date
19741974-07-201974-08-07
19751975-06-251975-07-29
19761976-09-061976-09-06
19771977-05-121977-05-25
19781978-06-301978-06-30
19791979-07-201979-07-20
19801980-05-221980-05-22
19811981-07-041981-07-07
19831983-06-111983-08-04

Every Fixed Threshold

Fixed thresholds at Norway House A
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days9819753
90 F (32.2 C): Days3219832
0 C (32 F): Ice days (max101551979146
0 C (32 F): Frost days (min102411974217
-10 C (14 F): Days with min101531978131
-20 C (-4 F): Days with min10109198281
-30 C (-22 F): Days with min1055198234
-40 C (-40 F): Days with min91119743
20 C (68 F): Tropical nights (min2219832
10 mm (0.39 in): Days with 10 mm or more rain1018198318
25 mm (0.98 in): Days with 25 mm or more rain8319762
50 mm (1.97 in): Days with 50 mm or more rain3119741
10 cm (3.9 in): Days with 10 cm or more snowfall10519784
25 cm (9.8 in): Days with 25 cm or more snowfall1119751

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1974.

Download the Data

  • Data for Norway House 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).