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

Whitney Pt Dam Threshold Days by Year (USC00309442)

15 fixed thresholds counted per year at Whitney Pt Dam (USC00309442): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Whitney Pt Dam Thresholds

  • Whitney Pt Dam: days with 10 mm (0.39 in) or more of precipitation in 17 years, most in 2011 with 43.
  • Whitney Pt Dam: days with 25 mm (0.98 in) or more of precipitation in 17 years, most in 2011 with 11.
  • Whitney Pt Dam: days with a maximum temperature at or above 30 C (86 F) in 15 years, most in 2025 with 28.
  • Whitney Pt Dam: days with a maximum temperature at or below 0 C (32 F) in 15 years, most in 2014 with 63.
  • 15 fixed thresholds have at least one qualifying day at Whitney Pt Dam.
15 years with a qualifying day
Days at or above 30 C (86 F) per year at Whitney Pt Dam Days per year at Whitney Pt Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 28 in 2025. 01020302011: 192012: 262013: 192014: 32015: 162016: 252017: 102018: 232019: 162020: 272021: 152022: 262023: 112024: 172025: 2820112013201520172019202120232025
Days per year at Whitney Pt Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 28 in 2025.
Days at or above 30 C (86 F) per year at Whitney Pt Dam
YearDaysDecade average
20111917.4
20122617.4
20131917.4
2014317.4
20151617.4
20162517.4
20171017.4
20182317.4
20191617.4
20202720.7
20211520.7
20222620.7
20231120.7
20241720.7
20252820.7
First to last qualifying date each year at Whitney Pt Dam For each year, a bar from the first to the last day at Whitney Pt Dam meeting 30 C (86 F). 2011: 1 June 2011 to 5 September 20112012: 21 May 2012 to 1 September 20122013: 22 May 2013 to 12 September 20132014: 18 June 2014 to 24 July 20142015: 9 May 2015 to 10 September 20152016: 28 May 2016 to 11 September 20162017: 18 May 2017 to 28 September 20172018: 3 May 2018 to 6 September 20182019: 29 June 2019 to 23 September 20192020: 27 May 2020 to 9 September 20202021: 21 May 2021 to 26 August 20212022: 22 May 2022 to 30 August 20222023: 30 May 2023 to 8 September 20232024: 23 May 2024 to 2 August 20242025: 5 June 2025 to 18 August 202520112013201520172019202120232025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Whitney Pt Dam meeting 30 C (86 F).
First to last qualifying date each year at Whitney Pt Dam
YearFirst dateLast date
20112011-06-012011-09-05
20122012-05-212012-09-01
20132013-05-222013-09-12
20142014-06-182014-07-24
20152015-05-092015-09-10
20162016-05-282016-09-11
20172017-05-182017-09-28
20182018-05-032018-09-06
20192019-06-292019-09-23
20202020-05-272020-09-09
20212021-05-212021-08-26
20222022-05-222022-08-30
20232023-05-302023-09-08
20242024-05-232024-08-02
20252025-06-052025-08-18

Every Fixed Threshold

Fixed thresholds at Whitney Pt Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1528202528
35 C (95 F): Days2220111
90 F (32.2 C): Days12620115
0 C (32 F): Ice days (max1563201449
0 C (32 F): Frost days (min151562016152
-10 C (14 F): Days with min1560201532
-20 C (-4 F): Days with min142220152
20 C (68 F): Tropical nights (min13920214
10 mm (0.39 in): Days with 10 mm or more rain1743201130
25 mm (0.98 in): Days with 25 mm or more rain171120115
50 mm (1.97 in): Days with 50 mm or more rain9220111
100 mm (3.94 in): Days with 100 mm or more rain1120111
10 cm (3.9 in): Days with 10 cm or more snowfall10520223
25 cm (9.8 in): Days with 25 cm or more snowfall3120171
50 cm (19.7 in): Days with 50 cm or more snowfall2120171

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2011.

Download the Data

  • Data for Whitney Pt Dam 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).