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Built 2026-10-19 (19 October 2026)

Lancaster Threshold Days by Year (USC00334403)

14 fixed thresholds counted per year at Lancaster (USC00334403): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lancaster Thresholds

  • Lancaster: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 2018 with 48.
  • Lancaster: days with 25 mm (0.98 in) or more of precipitation in 26 years, most in 2019 with 15.
  • Lancaster: days with a maximum temperature at or above 30 C (86 F) in 25 years, most in 2002 with 77.
  • Lancaster: days with a maximum temperature at or above 90 F (32.2 C) in 25 years, most in 2012 with 41.
  • 14 fixed thresholds have at least one qualifying day at Lancaster.
25 years with a qualifying day
Days at or above 30 C (86 F) per year at Lancaster Days per year at Lancaster with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 77 in 2002. 0204060801998: 501999: 672000: 312001: 442002: 772003: 322005: 642006: 442009: 262010: 652012: 722013: 402014: 452015: 412016: 752017: 382018: 602019: 532020: 562021: 582022: 452023: 292024: 672025: 662026: 41199820012005201020142017202020232026
Days per year at Lancaster with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 77 in 2002.
Days at or above 30 C (86 F) per year at Lancaster
YearDaysDecade average
19985058.5
19996758.5
20003145.4
20014445.4
20027745.4
20033245.4
20056445.4
20064445.4
20092645.4
20106554.3
20127254.3
20134054.3
20144554.3
20154154.3
20167554.3
20173854.3
20186054.3
20195354.3
20205651.7
20215851.7
20224551.7
20232951.7
20246751.7
20256651.7
20264151.7
First to last qualifying date each year at Lancaster For each year, a bar from the first to the last day at Lancaster meeting 30 C (86 F). 1998: 15 May 1998 to 28 September 19981999: 12 May 1999 to 29 September 19992000: 7 May 2000 to 3 September 20002001: 4 May 2001 to 10 September 20012002: 17 April 2002 to 21 September 20022003: 24 June 2003 to 30 August 20032005: 12 May 2005 to 26 September 20052006: 26 May 2006 to 26 August 20062009: 25 April 2009 to 27 August 20092010: 3 April 2010 to 25 September 20102012: 21 March 2012 to 9 September 20122013: 18 April 2013 to 11 September 20132014: 7 May 2014 to 2 October 20142015: 7 May 2015 to 8 September 20152016: 27 May 2016 to 23 September 20162017: 16 May 2017 to 27 September 20172018: 12 May 2018 to 8 October 20182019: 18 May 2019 to 3 October 20192020: 24 May 2020 to 12 September 20202021: 20 May 2021 to 19 September 20212022: 23 April 2022 to 21 September 20222023: 1 June 2023 to 4 October 20232024: 16 April 2024 to 6 October 20242025: 18 April 2025 to 29 September 20252026: 23 March 2026 to 18 September 20261998200220092014201820222026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Lancaster meeting 30 C (86 F).
First to last qualifying date each year at Lancaster
YearFirst dateLast date
19981998-05-151998-09-28
19991999-05-121999-09-29
20002000-05-072000-09-03
20012001-05-042001-09-10
20022002-04-172002-09-21
20032003-06-242003-08-30
20052005-05-122005-09-26
20062006-05-262006-08-26
20092009-04-252009-08-27
20102010-04-032010-09-25
20122012-03-212012-09-09
20132013-04-182013-09-11
20142014-05-072014-10-02
20152015-05-072015-09-08
20162016-05-272016-09-23
20172017-05-162017-09-27
20182018-05-122018-10-08
20192019-05-182019-10-03
20202020-05-242020-09-12
20212021-05-202021-09-19
20222022-04-232022-09-21
20232023-06-012023-10-04
20242024-04-162024-10-06
20252025-04-182025-09-29
20262026-03-232026-09-18

Every Fixed Threshold

Fixed thresholds at Lancaster
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2577200241
35 C (95 F): Days141219992
90 F (32.2 C): Days2541201212
100 F (37.8 C): Days1320123
0 C (32 F): Ice days (max2549201027
0 C (32 F): Frost days (min25136201369
-10 C (14 F): Days with min2540201420
-20 C (-4 F): Days with min10620145
20 C (68 F): Tropical nights (min2547201828
25 C (77 F): Days with min8220101
10 mm (0.39 in): Days with 10 mm or more rain2648201827
25 mm (0.98 in): Days with 25 mm or more rain261520199
50 mm (1.97 in): Days with 50 mm or more rain15420171
100 mm (3.94 in): Days with 100 mm or more rain10n/a1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1998.

Download the Data

  • Data for Lancaster 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).