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

Theresa 4NW Threshold Days by Year (USC00308455)

17 fixed thresholds counted per year at Theresa 4NW (USC00308455): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Theresa 4NW Thresholds

  • Theresa 4NW: days with 10 mm (0.39 in) or more of precipitation in 40 years, most in 2021 with 53.
  • Theresa 4NW: days with 25 mm (0.98 in) or more of precipitation in 39 years, most in 2022 with 15.
  • Theresa 4NW: days with 50 mm (1.97 in) or more of precipitation in 23 years, most in 2023 with 5.
  • Theresa 4NW: days with 10 cm (3.9 in) or more of snowfall in 19 years, most in 1977 with 13.
  • 17 fixed thresholds have at least one qualifying day at Theresa 4NW.
5 years with a qualifying day
Days at or above 30 C (86 F) per year at Theresa 4NW Days per year at Theresa 4NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 37 in 2020. 0102030402020: 372021: 342022: 302023: 162025: 3120202021202220232025
Days per year at Theresa 4NW with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 37 in 2020.
Days at or above 30 C (86 F) per year at Theresa 4NW
YearDaysDecade average
20203729.6
20213429.6
20223029.6
20231629.6
20253129.6
First to last qualifying date each year at Theresa 4NW For each year, a bar from the first to the last day at Theresa 4NW meeting 30 C (86 F). 2020: 27 May 2020 to 25 August 20202021: 11 April 2021 to 18 September 20212022: 14 May 2022 to 30 August 20222023: 1 June 2023 to 27 July 20232025: 14 May 2025 to 17 August 202520202021202220232025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Theresa 4NW meeting 30 C (86 F).
First to last qualifying date each year at Theresa 4NW
YearFirst dateLast date
20202020-05-272020-08-25
20212021-04-112021-09-18
20222022-05-142022-08-30
20232023-06-012023-07-27
20252025-05-142025-08-17

Every Fixed Threshold

Fixed thresholds at Theresa 4NW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days537202031
35 C (95 F): Days3320203
90 F (32.2 C): Days515202020
0 C (32 F): Ice days (max550202222
0 C (32 F): Frost days (min5153202364
-10 C (14 F): Days with min565202221
-20 C (-4 F): Days with min51920222
-30 C (-22 F): Days with min2120221
20 C (68 F): Tropical nights (min52720219
25 C (77 F): Days with min1120211
10 mm (0.39 in): Days with 10 mm or more rain4053202136
25 mm (0.98 in): Days with 25 mm or more rain3915202211
50 mm (1.97 in): Days with 50 mm or more rain23520235
100 mm (3.94 in): Days with 100 mm or more rain1119511
10 cm (3.9 in): Days with 10 cm or more snowfall191319775
25 cm (9.8 in): Days with 25 cm or more snowfall11219702
50 cm (19.7 in): Days with 50 cm or more snowfall1119771

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2020.

Download the Data

  • Data for Theresa 4NW 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).