Built 2026-10-19 (19 October 2026)

Wiseman Threshold Days by Year (USC00509869)

14 fixed thresholds counted per year at Wiseman (USC00509869): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Wiseman Thresholds

  • Wiseman: nights with a minimum temperature at or below 0 C (32 F) in 34 years, most in 1948 with 267.
  • Wiseman: nights with a minimum temperature at or below -10 C (14 F) in 34 years, most in 1948 with 196.
  • Wiseman: nights with a minimum temperature at or below -20 C (-4 F) in 34 years, most in 1999 with 138.
  • Wiseman: nights with a minimum temperature at or below -30 C (-22 F) in 34 years, most in 1999 with 80.
  • 14 fixed thresholds have at least one qualifying day at Wiseman.
8 years with a qualifying day
Days at or above 30 C (86 F) per year at Wiseman Days per year at Wiseman with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 4 in 2025. 012341920: 11937: 31938: 31939: 11940: 21999: 12019: 32025: 419201937193819391940199920192025
Days per year at Wiseman with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 4 in 2025.
Days at or above 30 C (86 F) per year at Wiseman
YearDaysDecade average
192011
193732.3
193832.3
193912.3
194022
199911
201933
202544
First to last qualifying date each year at Wiseman For each year, a bar from the first to the last day at Wiseman meeting 30 C (86 F). 1920: 1 August 1920 to 1 August 19201937: 19 June 1937 to 21 June 19371938: 25 June 1938 to 27 June 19381939: 20 July 1939 to 20 July 19391940: 12 July 1940 to 13 July 19401999: 13 June 1999 to 13 June 19992019: 9 July 2019 to 11 July 20192025: 19 June 2025 to 7 July 202519201937193819391940199920192025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Wiseman meeting 30 C (86 F).
First to last qualifying date each year at Wiseman
YearFirst dateLast date
19201920-08-011920-08-01
19371937-06-191937-06-21
19381938-06-251938-06-27
19391939-07-201939-07-20
19401940-07-121940-07-13
19991999-06-131999-06-13
20192019-07-092019-07-11
20252025-06-192025-07-07

Every Fixed Threshold

Fixed thresholds at Wiseman
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days8420254
90 F (32.2 C): Days1120251
0 C (32 F): Ice days (max301932023113
0 C (32 F): Frost days (min342671948174
-10 C (14 F): Days with min341961948117
-20 C (-4 F): Days with min34138199982
-30 C (-22 F): Days with min3480199947
-40 C (-40 F): Days with min3425199912
10 mm (0.39 in): Days with 10 mm or more rain3114199810
25 mm (0.98 in): Days with 25 mm or more rain21319982
50 mm (1.97 in): Days with 50 mm or more rain3120251
10 cm (3.9 in): Days with 10 cm or more snowfall26920191
25 cm (9.8 in): Days with 25 cm or more snowfall16420001
50 cm (19.7 in): Days with 50 cm or more snowfall4119991

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1920.

Download the Data

  • Data for Wiseman 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).