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

Denman Island Threshold Days by Year (CA001022430)

12 fixed thresholds counted per year at Denman Island (CA001022430): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Denman Island Thresholds

  • Denman Island: days with 10 mm (0.39 in) or more of precipitation in 50 years, most in 1961 with 62.
  • Denman Island: days with 25 mm (0.98 in) or more of precipitation in 50 years, most in 1908 with 27.
  • Denman Island: days with 10 cm (3.9 in) or more of snowfall in 44 years, most in 1937 with 10.
  • Denman Island: days with 50 mm (1.97 in) or more of precipitation in 36 years, most in 1921 with 5.
  • 12 fixed thresholds have at least one qualifying day at Denman Island.
4 years with a qualifying day
Days at or above 30 C (86 F) per year at Denman Island Days per year at Denman Island with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 11 in 1961. 0510151961: 111962: 21963: 21965: 81961196219631965
Days per year at Denman Island with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 11 in 1961.
Days at or above 30 C (86 F) per year at Denman Island
YearDaysDecade average
1961115.8
196225.8
196325.8
196585.8
First to last qualifying date each year at Denman Island For each year, a bar from the first to the last day at Denman Island meeting 30 C (86 F). 1961: 10 July 1961 to 13 August 19611962: 26 July 1962 to 27 July 19621963: 15 June 1963 to 16 June 19631965: 3 July 1965 to 18 August 19651961196219631965JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Denman Island meeting 30 C (86 F).
First to last qualifying date each year at Denman Island
YearFirst dateLast date
19611961-07-101961-08-13
19621962-07-261962-07-27
19631963-06-151963-06-16
19651965-07-031965-08-18

Every Fixed Threshold

Fixed thresholds at Denman Island
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days41119618
35 C (95 F): Days2219611
90 F (32.2 C): Days2419654
0 C (32 F): Ice days (max5819642
0 C (32 F): Frost days (min5107196489
-10 C (14 F): Days with min2419644
10 mm (0.39 in): Days with 10 mm or more rain5062196138
25 mm (0.98 in): Days with 25 mm or more rain5027190812
50 mm (1.97 in): Days with 50 mm or more rain36519213
10 cm (3.9 in): Days with 10 cm or more snowfall441019376
25 cm (9.8 in): Days with 25 cm or more snowfall16319161
50 cm (19.7 in): Days with 50 cm or more snowfall2119351

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.

Download the Data

  • Data for Denman Island 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).