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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Jasper Threshold Days by Year (USC00014225)

14 fixed thresholds counted per year at Jasper (USC00014225): 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 6 years, most in 1957 with 53.
  • Jasper: days with 25 mm (0.98 in) or more of precipitation in 6 years, most in 1957 with 21.
  • Jasper: days with 50 mm (1.97 in) or more of precipitation in 5 years, most in 1957 with 4.
  • Jasper: days with a maximum temperature at or above 30 C (86 F) in 4 years, most in 1958 with 119.
  • 14 fixed thresholds have at least one qualifying day at Jasper.
4 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 119 in 1958. 0501001501895: 1051957: 1171958: 1191959: 1141895195719581959
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 119 in 1958.
Days at or above 30 C (86 F) per year at Jasper
YearDaysDecade average
1895105105
1957117116.7
1958119116.7
1959114116.7
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: 1 May 1895 to 6 October 18951957: 19 April 1957 to 22 September 19571958: 18 April 1958 to 27 September 19581959: 7 April 1959 to 11 October 19591895195719581959JanFebMarAprMayJunJulAugSepOctNovDec
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
18951895-05-011895-10-06
19571957-04-191957-09-22
19581958-04-181958-09-27
19591959-04-071959-10-11

Every Fixed Threshold

Fixed thresholds at Jasper
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days41191958114
35 C (95 F): Days425195925
90 F (32.2 C): Days483195877
100 F (37.8 C): Days1219572
0 C (32 F): Ice days (max3818951
0 C (32 F): Frost days (min493195868
-10 C (14 F): Days with min41119585
20 C (68 F): Tropical nights (min458189555
25 C (77 F): Days with min1318953
10 mm (0.39 in): Days with 10 mm or more rain653195745
25 mm (0.98 in): Days with 25 mm or more rain621195719
50 mm (1.97 in): Days with 50 mm or more rain5419572
100 mm (3.94 in): Days with 100 mm or more rain1119591
10 cm (3.9 in): Days with 10 cm or more snowfall1119581

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).