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Built 2026-10-19 (19 October 2026)

Somerset Threshold Days by Year (USC00447904)

17 fixed thresholds counted per year at Somerset (USC00447904): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Somerset Thresholds

  • Somerset: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 1996 with 50.
  • Somerset: days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 2020 with 18.
  • Somerset: days with 50 mm (1.97 in) or more of precipitation in 35 years, most in 2020 with 9.
  • Somerset: days with 10 cm (3.9 in) or more of snowfall in 29 years, most in 1996 with 6.
  • 17 fixed thresholds have at least one qualifying day at Somerset.
27 years with a qualifying day
Days at or above 30 C (86 F) per year at Somerset Days per year at Somerset with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 2010. 02550751001996: 361997: 411998: 782000: 412001: 402002: 632004: 402005: 612006: 602009: 382010: 922011: 602012: 652013: 532014: 452015: 572016: 762017: 652018: 672019: 872020: 642021: 682022: 542023: 592024: 652025: 522026: 81199620002004200920122015201820212024
Days per year at Somerset with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 92 in 2010.
Days at or above 30 C (86 F) per year at Somerset
YearDaysDecade average
19963651.7
19974151.7
19987851.7
20004149
20014049
20026349
20044049
20056149
20066049
20093849
20109266.7
20116066.7
20126566.7
20135366.7
20144566.7
20155766.7
20167666.7
20176566.7
20186766.7
20198766.7
20206463.3
20216863.3
20225463.3
20235963.3
20246563.3
20255263.3
20268163.3
First to last qualifying date each year at Somerset For each year, a bar from the first to the last day at Somerset meeting 30 C (86 F). 1996: 12 April 1996 to 13 September 19961997: 19 May 1997 to 7 October 19971998: 30 March 1998 to 1 October 19982000: 9 March 2000 to 21 September 20002001: 10 April 2001 to 5 September 20012002: 17 April 2002 to 6 October 20022004: 19 April 2004 to 24 September 20042005: 6 June 2005 to 24 September 20052006: 29 May 2006 to 29 August 20062009: 26 April 2009 to 25 September 20092010: 6 April 2010 to 13 October 20102011: 27 May 2011 to 15 September 20112012: 17 April 2012 to 9 September 20122013: 11 April 2013 to 7 October 20132014: 9 May 2014 to 22 September 20142015: 27 May 2015 to 8 October 20152016: 19 April 2016 to 3 November 20162017: 17 April 2017 to 11 October 20172018: 3 May 2018 to 8 October 20182019: 3 May 2019 to 4 October 20192020: 4 June 2020 to 11 September 20202021: 29 April 2021 to 16 September 20212022: 25 April 2022 to 22 September 20222023: 7 April 2023 to 31 October 20232024: 16 April 2024 to 30 August 20242025: 1 May 2025 to 20 September 20252026: 12 March 2026 to 15 October 20261996200120062012201620202024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Somerset meeting 30 C (86 F).
First to last qualifying date each year at Somerset
YearFirst dateLast date
19961996-04-121996-09-13
19971997-05-191997-10-07
19981998-03-301998-10-01
20002000-03-092000-09-21
20012001-04-102001-09-05
20022002-04-172002-10-06
20042004-04-192004-09-24
20052005-06-062005-09-24
20062006-05-292006-08-29
20092009-04-262009-09-25
20102010-04-062010-10-13
20112011-05-272011-09-15
20122012-04-172012-09-09
20132013-04-112013-10-07
20142014-05-092014-09-22
20152015-05-272015-10-08
20162016-04-192016-11-03
20172017-04-172017-10-11
20182018-05-032018-10-08
20192019-05-032019-10-04
20202020-06-042020-09-11
20212021-04-292021-09-16
20222022-04-252022-09-22
20232023-04-072023-10-31
20242024-04-162024-08-30
20252025-05-012025-09-20
20262026-03-122026-10-15

Every Fixed Threshold

Fixed thresholds at Somerset
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2792201081
35 C (95 F): Days2024201012
90 F (32.2 C): Days2761201042
100 F (37.8 C): Days6220103
0 C (32 F): Ice days (max2516201412
0 C (32 F): Frost days (min26128201369
-10 C (14 F): Days with min2526199616
-20 C (-4 F): Days with min3319961
20 C (68 F): Tropical nights (min2659201851
25 C (77 F): Days with min2120051
10 mm (0.39 in): Days with 10 mm or more rain4750199631
25 mm (0.98 in): Days with 25 mm or more rain471820208
50 mm (1.97 in): Days with 50 mm or more rain35920203
100 mm (3.94 in): Days with 100 mm or more rain6219971
200 mm (7.87 in): Days with 200 mm or more rain1119971
10 cm (3.9 in): Days with 10 cm or more snowfall29619961
25 cm (9.8 in): Days with 25 cm or more snowfall6119661

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1996.

Download the Data

  • Data for Somerset 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).