Built 2026-10-19 (19 October 2026)

Whitefield Mt Washington Rgnl Threshold Days by Year (USW00054728)

12 fixed thresholds counted per year at Whitefield Mt Washington Rgnl (USW00054728): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Whitefield Mt Washington Rgnl Thresholds

  • Whitefield Mt Washington Rgnl: days with a maximum temperature at or above 30 C (86 F) in 29 years, most in 2018 with 26.
  • Whitefield Mt Washington Rgnl: days with a maximum temperature at or below 0 C (32 F) in 29 years, most in 2003 with 85.
  • Whitefield Mt Washington Rgnl: nights with a minimum temperature at or below 0 C (32 F) in 29 years, most in 2001 with 219.
  • Whitefield Mt Washington Rgnl: nights with a minimum temperature at or below -10 C (14 F) in 29 years, most in 1997 with 94.
  • 12 fixed thresholds have at least one qualifying day at Whitefield Mt Washington Rgnl.
29 years with a qualifying day
Days at or above 30 C (86 F) per year at Whitefield Mt Washington Rgnl Days per year at Whitefield Mt Washington Rgnl with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 26 in 2018. 01020301997: 81998: 41999: 192000: 22001: 242002: 162003: 72004: 32005: 162006: 102007: 122008: 72009: 52010: 132011: 102012: 172013: 162014: 92015: 102016: 162017: 152018: 262019: 62020: 242021: 202022: 242023: 72024: 102025: 231997200020032006200920122015201820212024
Days per year at Whitefield Mt Washington Rgnl with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 26 in 2018.
Days at or above 30 C (86 F) per year at Whitefield Mt Washington Rgnl
YearDaysDecade average
1997810.3
1998410.3
19991910.3
2000210.2
20012410.2
20021610.2
2003710.2
2004310.2
20051610.2
20061010.2
20071210.2
2008710.2
2009510.2
20101313.8
20111013.8
20121713.8
20131613.8
2014913.8
20151013.8
20161613.8
20171513.8
20182613.8
2019613.8
20202418
20212018
20222418
2023718
20241018
20252318
First to last qualifying date each year at Whitefield Mt Washington Rgnl For each year, a bar from the first to the last day at Whitefield Mt Washington Rgnl meeting 30 C (86 F). 1997: 10 June 1997 to 10 August 19971998: 14 July 1998 to 9 August 19981999: 31 May 1999 to 4 September 19992000: 26 June 2000 to 1 September 20002001: 2 May 2001 to 9 September 20012002: 3 July 2002 to 10 September 20022003: 24 June 2003 to 8 July 20032004: 15 May 2004 to 22 July 20042005: 9 June 2005 to 13 August 20052006: 31 May 2006 to 2 August 20062007: 25 May 2007 to 8 September 20072008: 7 June 2008 to 9 July 20082009: 25 April 2009 to 18 August 20092010: 25 May 2010 to 3 September 20102011: 8 June 2011 to 4 September 20112012: 16 April 2012 to 26 August 20122013: 31 May 2013 to 11 September 20132014: 9 June 2014 to 5 September 20142015: 27 May 2015 to 9 September 20152016: 27 May 2016 to 12 August 20162017: 17 May 2017 to 27 September 20172018: 2 May 2018 to 16 September 20182019: 4 July 2019 to 30 July 20192020: 26 May 2020 to 10 September 20202021: 20 May 2021 to 26 August 20212022: 12 May 2022 to 30 August 20222023: 1 June 2023 to 7 September 20232024: 3 June 2024 to 2 August 20242025: 4 June 2025 to 23 August 202519972001200520092013201720212025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Whitefield Mt Washington Rgnl meeting 30 C (86 F).
First to last qualifying date each year at Whitefield Mt Washington Rgnl
YearFirst dateLast date
19971997-06-101997-08-10
19981998-07-141998-08-09
19991999-05-311999-09-04
20002000-06-262000-09-01
20012001-05-022001-09-09
20022002-07-032002-09-10
20032003-06-242003-07-08
20042004-05-152004-07-22
20052005-06-092005-08-13
20062006-05-312006-08-02
20072007-05-252007-09-08
20082008-06-072008-07-09
20092009-04-252009-08-18
20102010-05-252010-09-03
20112011-06-082011-09-04
20122012-04-162012-08-26
20132013-05-312013-09-11
20142014-06-092014-09-05
20152015-05-272015-09-09
20162016-05-272016-08-12
20172017-05-172017-09-27
20182018-05-022018-09-16
20192019-07-042019-07-30
20202020-05-262020-09-10
20212021-05-202021-08-26
20222022-05-122022-08-30
20232023-06-012023-09-07
20242024-06-032024-08-02
20252025-06-042025-08-23

Every Fixed Threshold

Fixed thresholds at Whitefield Mt Washington Rgnl
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2926201823
35 C (95 F): Days2220252
90 F (32.2 C): Days241120209
0 C (32 F): Ice days (max2985200379
0 C (32 F): Frost days (min292192001193
-10 C (14 F): Days with min2994199774
-20 C (-4 F): Days with min2951200326
-30 C (-22 F): Days with min201320043
20 C (68 F): Tropical nights (min7220182
10 mm (0.39 in): Days with 10 mm or more rain2743200520
25 mm (0.98 in): Days with 25 mm or more rain271020135
50 mm (1.97 in): Days with 50 mm or more rain11220052

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1997.

Download the Data

  • Data for Whitefield Mt Washington Rgnl 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).