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Built 2026-10-19 (19 October 2026)

Jasper Threshold Days by Year (USC00414563)

16 fixed thresholds counted per year at Jasper (USC00414563): 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 62 years, most in 1991 with 61.
  • Jasper: days with 25 mm (0.98 in) or more of precipitation in 62 years, most in 1900 with 29.
  • Jasper: days with 50 mm (1.97 in) or more of precipitation in 62 years, most in 1998 with 11.
  • Jasper: days with 100 mm (3.94 in) or more of precipitation in 22 years, most in 1959 with 2.
  • 16 fixed thresholds have at least one qualifying day at Jasper.
19 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 154 in 1955. 0501001502001898: 1341900: 1151901: 1251902: 1261954: 1341955: 1541956: 1491957: 1191958: 1351959: 1291960: 1301965: 1401966: 1231967: 1311968: 1131969: 1281970: 1301971: 1381972: 1381898190119541956195819601966196819701972
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 154 in 1955.
Days at or above 30 C (86 F) per year at Jasper
YearDaysDecade average
1898134134
1900115122
1901125122
1902126122
1954134136.7
1955154136.7
1956149136.7
1957119136.7
1958135136.7
1959129136.7
1960130127.5
1965140127.5
1966123127.5
1967131127.5
1968113127.5
1969128127.5
1970130135.3
1971138135.3
1972138135.3
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). 1898: 7 January 1898 to 16 October 18981900: 12 March 1900 to 21 November 19001901: 4 March 1901 to 24 November 19011902: 23 April 1902 to 21 December 19021954: 24 April 1954 to 15 October 19541955: 11 March 1955 to 13 October 19551956: 15 April 1956 to 20 October 19561957: 10 February 1957 to 4 October 19571958: 3 April 1958 to 10 October 19581959: 28 April 1959 to 13 October 19591960: 6 April 1960 to 14 October 19601965: 20 April 1965 to 21 October 19651966: 1 April 1966 to 14 October 19661967: 12 March 1967 to 26 November 19671968: 31 March 1968 to 3 November 19681969: 24 January 1969 to 12 November 19691970: 22 April 1970 to 27 October 19701971: 23 March 1971 to 3 November 19711972: 8 April 1972 to 2 November 19721898190219561959196619691972JanFebMarAprMayJunJulAugSepOctNovDec
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
18981898-01-071898-10-16
19001900-03-121900-11-21
19011901-03-041901-11-24
19021902-04-231902-12-21
19541954-04-241954-10-15
19551955-03-111955-10-13
19561956-04-151956-10-20
19571957-02-101957-10-04
19581958-04-031958-10-10
19591959-04-281959-10-13
19601960-04-061960-10-14
19651965-04-201965-10-21
19661966-04-011966-10-14
19671967-03-121967-11-26
19681968-03-311968-11-03
19691969-01-241969-11-12
19701970-04-221970-10-27
19711971-03-231971-11-03
19721972-04-081972-11-02

Every Fixed Threshold

Fixed thresholds at Jasper
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days191541955138
35 C (95 F): Days1969195420
40 C (104 F): Days2219541
90 F (32.2 C): Days19117195491
100 F (37.8 C): Days111519541
0 C (32 F): Ice days (max4119681
0 C (32 F): Frost days (min1866196830
-10 C (14 F): Days with min4219702
20 C (68 F): Tropical nights (min18142190087
25 C (77 F): Days with min71019001
10 mm (0.39 in): Days with 10 mm or more rain6261199133
25 mm (0.98 in): Days with 25 mm or more rain6229190017
50 mm (1.97 in): Days with 50 mm or more rain621119981
100 mm (3.94 in): Days with 100 mm or more rain22219591
200 mm (7.87 in): Days with 200 mm or more rain2119661
10 cm (3.9 in): Days with 10 cm or more snowfall2119481

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

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 (2026-10-12).