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Built 2026-10-19 (19 October 2026)

Mt Hood Test Site Threshold Days by Year (USS0021D08S)

11 fixed thresholds counted per year at Mt Hood Test Site (USS0021D08S): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mt Hood Test Site Thresholds

  • Mt Hood Test Site: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1996 with 131.
  • Mt Hood Test Site: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1996 with 54.
  • Mt Hood Test Site: days with 50 mm (1.97 in) or more of precipitation in 46 years, most in 1996 with 15.
  • Mt Hood Test Site: days with a maximum temperature at or below 0 C (32 F) in 41 years, most in 1990 with 105.
  • 11 fixed thresholds have at least one qualifying day at Mt Hood Test Site.
8 years with a qualifying day
Days at or above 30 C (86 F) per year at Mt Hood Test Site Days per year at Mt Hood Test Site with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 3 in 2022. 01231998: 12002: 12008: 12015: 22017: 12021: 22022: 32024: 119982002200820152017202120222024
Days per year at Mt Hood Test Site with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 3 in 2022.
Days at or above 30 C (86 F) per year at Mt Hood Test Site
YearDaysDecade average
199811
200211
200811
201521.5
201711.5
202122
202232
202412
First to last qualifying date each year at Mt Hood Test Site For each year, a bar from the first to the last day at Mt Hood Test Site meeting 30 C (86 F). 1998: 4 August 1998 to 4 August 19982002: 12 July 2002 to 12 July 20022008: 16 August 2008 to 16 August 20082015: 26 June 2015 to 27 June 20152017: 2 September 2017 to 2 September 20172021: 28 June 2021 to 29 June 20212022: 28 July 2022 to 30 July 20222024: 9 July 2024 to 9 July 202419982002200820152017202120222024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mt Hood Test Site meeting 30 C (86 F).
First to last qualifying date each year at Mt Hood Test Site
YearFirst dateLast date
19981998-08-041998-08-04
20022002-07-122002-07-12
20082008-08-162008-08-16
20152015-06-262015-06-27
20172017-09-022017-09-02
20212021-06-282021-06-29
20222022-07-282022-07-30
20242024-07-092024-07-09

Every Fixed Threshold

Fixed thresholds at Mt Hood Test Site
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days8320221
90 F (32.2 C): Days1120211
0 C (32 F): Ice days (max41105199023
0 C (32 F): Frost days (min35217201196
-10 C (14 F): Days with min352420081
-20 C (-4 F): Days with min3419902
20 C (68 F): Tropical nights (min7320211
10 mm (0.39 in): Days with 10 mm or more rain46131199646
25 mm (0.98 in): Days with 25 mm or more rain4654199615
50 mm (1.97 in): Days with 50 mm or more rain461519961
100 mm (3.94 in): Days with 100 mm or more rain15319941

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1998.

Download the Data

  • Data for Mt Hood Test Site 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).