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Built 2026-10-19 (19 October 2026)

Gross Rsvr Threshold Days by Year (USC00053629)

16 fixed thresholds counted per year at Gross Rsvr (USC00053629): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Gross Rsvr Thresholds

  • Gross Rsvr: days with 10 cm (3.9 in) or more of snowfall in 48 years, most in 1987 with 17.
  • Gross Rsvr: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 2004 with 25.
  • Gross Rsvr: days with 25 mm (0.98 in) or more of precipitation in 43 years, most in 1983 with 7.
  • Gross Rsvr: days with 25 cm (9.8 in) or more of snowfall in 39 years, most in 1983 with 5.
  • 16 fixed thresholds have at least one qualifying day at Gross Rsvr.
22 years with a qualifying day
Days at or above 30 C (86 F) per year at Gross Rsvr Days per year at Gross Rsvr with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 25 in 2024. 01020302004: 62005: 172006: 132007: 192008: 162009: 92010: 162011: 232012: 232013: 122014: 102015: 102016: 102017: 102018: 122020: 172021: 132022: 232023: 192024: 252025: 182026: 2920042007201020132016202020232026
Days per year at Gross Rsvr with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 25 in 2024.
Days at or above 30 C (86 F) per year at Gross Rsvr
YearDaysDecade average
2004613.3
20051713.3
20061313.3
20071913.3
20081613.3
2009913.3
20101614
20112314
20122314
20131214
20141014
20151014
20161014
20171014
20181214
20201720.6
20211320.6
20222320.6
20231920.6
20242520.6
20251820.6
20262920.6
First to last qualifying date each year at Gross Rsvr For each year, a bar from the first to the last day at Gross Rsvr meeting 30 C (86 F). 2004: 7 June 2004 to 1 August 20042005: 3 July 2005 to 31 August 20052006: 6 June 2006 to 12 August 20062007: 18 June 2007 to 27 August 20072008: 27 June 2008 to 22 August 20082009: 12 July 2009 to 24 August 20092010: 29 May 2010 to 23 August 20102011: 27 June 2011 to 2 September 20112012: 10 June 2012 to 28 August 20122013: 11 June 2013 to 7 September 20132014: 30 June 2014 to 4 September 20142015: 20 June 2015 to 31 August 20152016: 20 June 2016 to 4 August 20162017: 21 June 2017 to 4 September 20172018: 11 June 2018 to 21 July 20182020: 8 July 2020 to 7 September 20202021: 11 June 2021 to 11 September 20212022: 11 June 2022 to 21 September 20222023: 28 June 2023 to 31 August 20232024: 13 June 2024 to 27 September 20242025: 20 June 2025 to 22 August 20252026: 17 June 2026 to 5 September 202620042007201020132016202020232026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Gross Rsvr meeting 30 C (86 F).
First to last qualifying date each year at Gross Rsvr
YearFirst dateLast date
20042004-06-072004-08-01
20052005-07-032005-08-31
20062006-06-062006-08-12
20072007-06-182007-08-27
20082008-06-272008-08-22
20092009-07-122009-08-24
20102010-05-292010-08-23
20112011-06-272011-09-02
20122012-06-102012-08-28
20132013-06-112013-09-07
20142014-06-302014-09-04
20152015-06-202015-08-31
20162016-06-202016-08-04
20172017-06-212017-09-04
20182018-06-112018-07-21
20202020-07-082020-09-07
20212021-06-112021-09-11
20222022-06-112022-09-21
20232023-06-282023-08-31
20242024-06-132024-09-27
20252025-06-202025-08-22
20262026-06-172026-09-05

Every Fixed Threshold

Fixed thresholds at Gross Rsvr
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2225202429
35 C (95 F): Days2120241
90 F (32.2 C): Days208201212
0 C (32 F): Ice days (max2244202310
0 C (32 F): Frost days (min222002008101
-10 C (14 F): Days with min2263201317
-20 C (-4 F): Days with min211020071
-30 C (-22 F): Days with min1120111
20 C (68 F): Tropical nights (min1120061
10 mm (0.39 in): Days with 10 mm or more rain472520049
25 mm (0.98 in): Days with 25 mm or more rain43719831
50 mm (1.97 in): Days with 50 mm or more rain19219831
100 mm (3.94 in): Days with 100 mm or more rain2119861
10 cm (3.9 in): Days with 10 cm or more snowfall481719873
25 cm (9.8 in): Days with 25 cm or more snowfall39519833
50 cm (19.7 in): Days with 50 cm or more snowfall11220061

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2004.

Download the Data

  • Data for Gross Rsvr 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).