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Built 2026-10-19 (19 October 2026)

Courtenay Grantham Threshold Days by Year (CA001021988)

12 fixed thresholds counted per year at Courtenay Grantham (CA001021988): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Courtenay Grantham Thresholds

  • Courtenay Grantham: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 1961 with 63.
  • Courtenay Grantham: days with 25 mm (0.98 in) or more of precipitation in 24 years, most in 1975 with 24.
  • Courtenay Grantham: days with 10 cm (3.9 in) or more of snowfall in 23 years, most in 1971 with 9.
  • Courtenay Grantham: days with 50 mm (1.97 in) or more of precipitation in 21 years, most in 1968 with 7.
  • 12 fixed thresholds have at least one qualifying day at Courtenay Grantham.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at Courtenay Grantham Days per year at Courtenay Grantham with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 1981. 02461980: 11981: 51982: 51983: 21980198119821983
Days per year at Courtenay Grantham with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 5 in 1981.
Days at or above 30 C (86 F) per year at Courtenay Grantham
YearDaysDecade average
198013.3
198153.3
198253.3
198323.3
First to last qualifying date each year at Courtenay Grantham For each year, a bar from the first to the last day at Courtenay Grantham meeting 30 C (86 F). 1980: 11 August 1980 to 11 August 19801981: 6 August 1981 to 10 August 19811982: 17 June 1982 to 27 July 19821983: 28 May 1983 to 29 May 19831980198119821983JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Courtenay Grantham meeting 30 C (86 F).
First to last qualifying date each year at Courtenay Grantham
YearFirst dateLast date
19801980-08-111980-08-11
19811981-08-061981-08-10
19821982-06-171982-07-27
19831983-05-281983-05-29

Every Fixed Threshold

Fixed thresholds at Courtenay Grantham
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days4519812
90 F (32.2 C): Days3419811
0 C (32 F): Ice days (max41219805
0 C (32 F): Frost days (min4100198259
-10 C (14 F): Days with min3319802
10 mm (0.39 in): Days with 10 mm or more rain2463196158
25 mm (0.98 in): Days with 25 mm or more rain2424197519
50 mm (1.97 in): Days with 50 mm or more rain21719684
100 mm (3.94 in): Days with 100 mm or more rain1119681
10 cm (3.9 in): Days with 10 cm or more snowfall23919711
25 cm (9.8 in): Days with 25 cm or more snowfall11419751
50 cm (19.7 in): Days with 50 cm or more snowfall1119781

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1980.

Download the Data

  • Data for Courtenay Grantham 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).