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

Jasper Threshold Days by Year

16 fixed thresholds counted per year at Jasper (USC00124372): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Jasper Thresholds

  • Jasper: days with 10 mm (0.39 in) or more of precipitation in 55 years, most in 1990 with 53.
  • Jasper: days with 25 mm (0.98 in) or more of precipitation in 55 years, most in 1989 with 26.
  • Jasper: days with 50 mm (1.97 in) or more of precipitation in 47 years, most in 1996 with 7.
  • Jasper: days with 10 cm (3.9 in) or more of snowfall in 20 years, most in 1996 with 3.
  • 16 fixed thresholds have at least one qualifying day at Jasper.
3 years with a qualifying day
Days at or above 30 C (86 F) per year at Jasper Days per year at Jasper with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 88 in 1895. 02550751001895: 881896: 831897: 83189518961897
Days per year at Jasper with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 88 in 1895.
Days at or above 30 C (86 F) per year at Jasper
YearDaysDecade average
18958884.7
18968384.7
18978384.7
First to last qualifying date each year at Jasper For each year, a bar from the first to the last day at Jasper meeting 30 C (86 F). 1895: 30 April 1895 to 25 September 18951896: 16 April 1896 to 18 September 18961897: 8 May 1897 to 15 October 1897189518961897JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Jasper meeting 30 C (86 F).
First to last qualifying date each year at Jasper
YearFirst dateLast date
18951895-04-301895-09-25
18961896-04-161896-09-18
18971897-05-081897-10-15

Every Fixed Threshold

Fixed thresholds at Jasper
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days388189583
35 C (95 F): Days326189726
90 F (32.2 C): Days359189759
100 F (37.8 C): Days2518975
0 C (32 F): Ice days (max329189511
0 C (32 F): Frost days (min3117189587
-10 C (14 F): Days with min333189511
-20 C (-4 F): Days with min3818951
20 C (68 F): Tropical nights (min344189635
25 C (77 F): Days with min1818968
10 mm (0.39 in): Days with 10 mm or more rain5553199035
25 mm (0.98 in): Days with 25 mm or more rain5526198913
50 mm (1.97 in): Days with 50 mm or more rain47719963
100 mm (3.94 in): Days with 100 mm or more rain8319931
10 cm (3.9 in): Days with 10 cm or more snowfall20319961
25 cm (9.8 in): Days with 25 cm or more snowfall2119961

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1895.

Download the Data

  • Data for Jasper 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).