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Built 2026-10-19 (19 October 2026)

Masset A Threshold Days by Year (CA001054925)

6 fixed thresholds counted per year at Masset A (CA001054925): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Masset A Thresholds

  • Masset A: days with a maximum temperature at or below 0 C (32 F) in 4 years, most in 1948 with 13.
  • Masset A: nights with a minimum temperature at or below 0 C (32 F) in 4 years, most in 1948 with 120.
  • Masset A: days with 10 mm (0.39 in) or more of precipitation in 4 years, most in 1945 with 49.
  • Masset A: days with 25 mm (0.98 in) or more of precipitation in 4 years, most in 1945 with 10.
  • 6 fixed thresholds have at least one qualifying day at Masset A.
4 years with a qualifying day
Nights at or below 0 C (32 F) per year at Masset A Days per year at Masset A with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 120 in 1948. 0501001501945: 1001946: 1021947: 831948: 1201945194619471948
Days per year at Masset A with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 120 in 1948.
Nights at or below 0 C (32 F) per year at Masset A
YearDaysDecade average
1945100101.3
1946102101.3
194783101.3
1948120101.3
First to last qualifying date each year at Masset A For each year, a bar from the first to the last day at Masset A meeting 0 C (32 F). 1945: 11 January 1945 to 30 December 19451946: 3 January 1946 to 31 December 19461947: 1 January 1947 to 29 December 19471948: 1 January 1948 to 31 December 19481945194619471948JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Masset A meeting 0 C (32 F).
First to last qualifying date each year at Masset A
YearFirst dateLast date
19451945-01-111945-12-30
19461946-01-031946-12-31
19471947-01-011947-12-29
19481948-01-011948-12-31

Every Fixed Threshold

Fixed thresholds at Masset A
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
0 C (32 F): Ice days (max413194813
0 C (32 F): Frost days (min41201948120
-10 C (14 F): Days with min2519472
10 mm (0.39 in): Days with 10 mm or more rain449194546
25 mm (0.98 in): Days with 25 mm or more rain41019454
10 cm (3.9 in): Days with 10 cm or more snowfall2319463

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1945.

Download the Data

  • Data for Masset 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).