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Built 2026-10-18 (18 October 2026)

Grantsville 2W Threshold Days by Year

15 fixed thresholds counted per year at Grantsville 2W (USC00423348): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grantsville 2W Thresholds

  • Grantsville 2W: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 1982 with 17.
  • Grantsville 2W: days with 10 cm (3.9 in) or more of snowfall in 51 years, most in 1972 with 9.
  • Grantsville 2W: days with 25 mm (0.98 in) or more of precipitation in 28 years, most in 1908 with 4.
  • Grantsville 2W: days with a maximum temperature at or above 30 C (86 F) in 26 years, most in 2007 with 99.
  • 15 fixed thresholds have at least one qualifying day at Grantsville 2W.
26 years with a qualifying day
Days at or above 30 C (86 F) per year at Grantsville 2W Days per year at Grantsville 2W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 99 in 2007. 02550751002000: 812002: 862003: 842004: 732005: 472006: 862007: 992008: 742009: 652010: 632011: 612012: 852013: 792014: 702015: 762016: 862017: 862018: 882019: 662020: 932021: 882022: 932023: 542024: 872025: 932026: 80200020042007201020132016201920222025
Days per year at Grantsville 2W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 99 in 2007.
Days at or above 30 C (86 F) per year at Grantsville 2W
YearDaysDecade average
20008177.2
20028677.2
20038477.2
20047377.2
20054777.2
20068677.2
20079977.2
20087477.2
20096577.2
20106376
20116176
20128576
20137976
20147076
20157676
20168676
20178676
20188876
20196676
20209384
20218884
20229384
20235484
20248784
20259384
20268084
First to last qualifying date each year at Grantsville 2W For each year, a bar from the first to the last day at Grantsville 2W meeting 30 C (86 F). 2000: 23 May 2000 to 17 September 20002002: 19 May 2002 to 16 September 20022003: 24 May 2003 to 10 October 20032004: 5 May 2004 to 19 September 20042005: 21 May 2005 to 2 October 20052006: 16 May 2006 to 15 September 20062007: 30 April 2007 to 17 September 20072008: 19 May 2008 to 26 September 20082009: 19 May 2009 to 30 September 20092010: 5 June 2010 to 29 September 20102011: 16 June 2011 to 1 October 20112012: 24 April 2012 to 18 September 20122013: 13 May 2013 to 18 September 20132014: 27 May 2014 to 27 September 20142015: 1 June 2015 to 2 October 20152016: 15 May 2016 to 21 September 20162017: 25 May 2017 to 14 September 20172018: 26 May 2018 to 30 September 20182019: 26 June 2019 to 16 September 20192020: 12 May 2020 to 25 September 20202021: 2 June 2021 to 16 September 20212022: 17 May 2022 to 28 September 20222023: 7 June 2023 to 9 September 20232024: 6 June 2024 to 12 October 20242025: 11 May 2025 to 15 September 20252026: 12 May 2026 to 29 August 20262000200520092013201720212025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Grantsville 2W meeting 30 C (86 F).
First to last qualifying date each year at Grantsville 2W
YearFirst dateLast date
20002000-05-232000-09-17
20022002-05-192002-09-16
20032003-05-242003-10-10
20042004-05-052004-09-19
20052005-05-212005-10-02
20062006-05-162006-09-15
20072007-04-302007-09-17
20082008-05-192008-09-26
20092009-05-192009-09-30
20102010-06-052010-09-29
20112011-06-162011-10-01
20122012-04-242012-09-18
20132013-05-132013-09-18
20142014-05-272014-09-27
20152015-06-012015-10-02
20162016-05-152016-09-21
20172017-05-252017-09-14
20182018-05-262018-09-30
20192019-06-262019-09-16
20202020-05-122020-09-25
20212021-06-022021-09-16
20222022-05-172022-09-28
20232023-06-072023-09-09
20242024-06-062024-10-12
20252025-05-112025-09-15
20262026-05-122026-08-29

Every Fixed Threshold

Fixed thresholds at Grantsville 2W
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2699200780
35 C (95 F): Days2646202244
40 C (104 F): Days7320214
90 F (32.2 C): Days2675200767
100 F (37.8 C): Days2518200319
0 C (32 F): Ice days (max256120137
0 C (32 F): Frost days (min26163200867
-10 C (14 F): Days with min265920131
-20 C (-4 F): Days with min3720132
20 C (68 F): Tropical nights (min2630200329
25 C (77 F): Days with min9420031
10 mm (0.39 in): Days with 10 mm or more rain711719822
25 mm (0.98 in): Days with 25 mm or more rain28419082
10 cm (3.9 in): Days with 10 cm or more snowfall51919723
25 cm (9.8 in): Days with 25 cm or more snowfall8119581

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2000.

Download the Data

  • Data for Grantsville 2W 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-12).