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

Williamsport 2 Threshold Days by Year (USC00369735)

17 fixed thresholds counted per year at Williamsport 2 (USC00369735): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Williamsport 2 Thresholds

  • Williamsport 2: days with a maximum temperature at or above 30 C (86 F) in 27 years, most in 2016 with 79.
  • Williamsport 2: days with a maximum temperature at or above 90 F (32.2 C) in 27 years, most in 2016 with 49.
  • Williamsport 2: days with a maximum temperature at or below 0 C (32 F) in 27 years, most in 2000 with 40.
  • Williamsport 2: nights with a minimum temperature at or below 0 C (32 F) in 27 years, most in 2013 with 132.
  • 17 fixed thresholds have at least one qualifying day at Williamsport 2.
27 years with a qualifying day
Days at or above 30 C (86 F) per year at Williamsport 2 Days per year at Williamsport 2 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 79 in 2016. 0204060801999: 562000: 322001: 452002: 662003: 362004: 392005: 652006: 512007: 752008: 452009: 262010: 702011: 492012: 562013: 492014: 352015: 552016: 792017: 392018: 452019: 412020: 572021: 522022: 542023: 392024: 492025: 52199920022005200820112014201720202023
Days per year at Williamsport 2 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 79 in 2016.
Days at or above 30 C (86 F) per year at Williamsport 2
YearDaysDecade average
19995656
20003248
20014548
20026648
20033648
20043948
20056548
20065148
20077548
20084548
20092648
20107051.8
20114951.8
20125651.8
20134951.8
20143551.8
20155551.8
20167951.8
20173951.8
20184551.8
20194151.8
20205750.5
20215250.5
20225450.5
20233950.5
20244950.5
20255250.5
First to last qualifying date each year at Williamsport 2 For each year, a bar from the first to the last day at Williamsport 2 meeting 30 C (86 F). 1999: 29 May 1999 to 6 September 19992000: 5 May 2000 to 9 September 20002001: 23 April 2001 to 8 September 20012002: 16 April 2002 to 14 September 20022003: 15 April 2003 to 29 August 20032004: 18 April 2004 to 24 September 20042005: 19 April 2005 to 22 September 20052006: 20 April 2006 to 22 August 20062007: 11 May 2007 to 9 October 20072008: 18 April 2008 to 14 September 20082009: 25 April 2009 to 26 August 20092010: 6 April 2010 to 24 September 20102011: 26 May 2011 to 4 September 20112012: 16 April 2012 to 31 August 20122013: 16 May 2013 to 11 September 20132014: 13 May 2014 to 6 September 20142015: 4 May 2015 to 9 September 20152016: 24 May 2016 to 23 September 20162017: 11 April 2017 to 27 September 20172018: 2 May 2018 to 6 September 20182019: 25 June 2019 to 2 October 20192020: 15 May 2020 to 10 September 20202021: 28 April 2021 to 18 September 20212022: 21 May 2022 to 29 August 20222023: 13 April 2023 to 7 September 20232024: 29 April 2024 to 20 September 20242025: 19 April 2025 to 28 September 20251999200320072011201520192023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Williamsport 2 meeting 30 C (86 F).
First to last qualifying date each year at Williamsport 2
YearFirst dateLast date
19991999-05-291999-09-06
20002000-05-052000-09-09
20012001-04-232001-09-08
20022002-04-162002-09-14
20032003-04-152003-08-29
20042004-04-182004-09-24
20052005-04-192005-09-22
20062006-04-202006-08-22
20072007-05-112007-10-09
20082008-04-182008-09-14
20092009-04-252009-08-26
20102010-04-062010-09-24
20112011-05-262011-09-04
20122012-04-162012-08-31
20132013-05-162013-09-11
20142014-05-132014-09-06
20152015-05-042015-09-09
20162016-05-242016-09-23
20172017-04-112017-09-27
20182018-05-022018-09-06
20192019-06-252019-10-02
20202020-05-152020-09-10
20212021-04-282021-09-18
20222022-05-212022-08-29
20232023-04-132023-09-07
20242024-04-292024-09-20
20252025-04-192025-09-28

Every Fixed Threshold

Fixed thresholds at Williamsport 2
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2779201652
35 C (95 F): Days221620024
40 C (104 F): Days1120111
90 F (32.2 C): Days2749201623
100 F (37.8 C): Days5220071
0 C (32 F): Ice days (max2740200031
0 C (32 F): Frost days (min271322013125
-10 C (14 F): Days with min2737201414
-20 C (-4 F): Days with min8220151
20 C (68 F): Tropical nights (min2742201627
25 C (77 F): Days with min3220111
10 mm (0.39 in): Days with 10 mm or more rain2751201830
25 mm (0.98 in): Days with 25 mm or more rain272020187
50 mm (1.97 in): Days with 50 mm or more rain18720181
100 mm (3.94 in): Days with 100 mm or more rain3119991
10 cm (3.9 in): Days with 10 cm or more snowfall23320001
25 cm (9.8 in): Days with 25 cm or more snowfall4220201

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1999.

Download the Data

  • Data for Williamsport 2 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).