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Data as of 2025-12-31
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Built 2026-10-18 (18 October 2026)

Toronto West Hill Threshold Days by Year

14 fixed thresholds counted per year at Toronto West Hill (CA006158784): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Toronto West Hill Thresholds

  • Toronto West Hill: days with 10 cm (3.9 in) or more of snowfall in 5 years, most in 1982 with 4.
  • Toronto West Hill: days with a maximum temperature at or above 30 C (86 F) in 3 years, most in 1983 with 10.
  • Toronto West Hill: days with a maximum temperature at or below 0 C (32 F) in 3 years, most in 1982 with 56.
  • Toronto West Hill: nights with a minimum temperature at or below 0 C (32 F) in 3 years, most in 1981 with 129.
  • 14 fixed thresholds have at least one qualifying day at Toronto West Hill.
3 years with a qualifying day
Days at or above 30 C (86 F) per year at Toronto West Hill Days per year at Toronto West Hill with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 1983. 0358101981: 71982: 31983: 10198119821983
Days per year at Toronto West Hill with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 10 in 1983.
Days at or above 30 C (86 F) per year at Toronto West Hill
YearDaysDecade average
198176.7
198236.7
1983106.7
First to last qualifying date each year at Toronto West Hill For each year, a bar from the first to the last day at Toronto West Hill meeting 30 C (86 F). 1981: 15 June 1981 to 13 July 19811982: 7 July 1982 to 26 July 19821983: 12 June 1983 to 10 September 1983198119821983JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Toronto West Hill meeting 30 C (86 F).
First to last qualifying date each year at Toronto West Hill
YearFirst dateLast date
19811981-06-151981-07-13
19821982-07-071982-07-26
19831983-06-121983-09-10

Every Fixed Threshold

Fixed thresholds at Toronto West Hill
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days310198310
35 C (95 F): Days1119831
90 F (32.2 C): Days2519835
0 C (32 F): Ice days (max356198244
0 C (32 F): Frost days (min31291981121
-10 C (14 F): Days with min348198231
-20 C (-4 F): Days with min3619811
-30 C (-22 F): Days with min1119811
20 C (68 F): Tropical nights (min317198317
25 C (77 F): Days with min1119831
10 mm (0.39 in): Days with 10 mm or more rain333198127
25 mm (0.98 in): Days with 25 mm or more rain3619836
50 mm (1.97 in): Days with 50 mm or more rain1119821
10 cm (3.9 in): Days with 10 cm or more snowfall5419824

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1981.

Download the Data

  • Data for Toronto West Hill 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 (2025-12-31).