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Built 2026-10-19 (19 October 2026)

Lancaster Threshold Days by Year (USW00003159)

17 fixed thresholds counted per year at Lancaster (USW00003159): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lancaster Thresholds

  • Lancaster: days with a maximum temperature at or above 30 C (86 F) in 51 years, most in 2020 with 157.
  • Lancaster: days with a maximum temperature at or above 35 C (95 F) in 51 years, most in 2020 with 104.
  • Lancaster: days with a maximum temperature at or above 90 F (32.2 C) in 51 years, most in 2020 with 139.
  • Lancaster: days with a maximum temperature at or above 100 F (37.8 C) in 51 years, most in 2022 with 67.
  • 17 fixed thresholds have at least one qualifying day at Lancaster.
51 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 157 in 2020. 0501001502001975: 1261976: 1001977: 1051978: 1131979: 1251980: 1101981: 1271982: 891983: 1011984: 1261985: 1161986: 1051987: 1351988: 1351989: 1321990: 1101991: 1171992: 1241993: 1001994: 1251995: 1141996: 1381997: 1291998: 851999: 1242001: 1552002: 1422003: 1542004: 1442005: 1162006: 1342007: 1442008: 1402009: 1332010: 1222011: 1282012: 1532013: 1352014: 1482015: 1312016: 1372017: 1362018: 1342019: 1262020: 1572021: 1462022: 1492023: 1302024: 1482025: 1342026: 146197519811987199319992006201220182024
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 157 in 2020.
Days at or above 30 C (86 F) per year at Lancaster
YearDaysDecade average
1975126113.8
1976100113.8
1977105113.8
1978113113.8
1979125113.8
1980110117.6
1981127117.6
198289117.6
1983101117.6
1984126117.6
1985116117.6
1986105117.6
1987135117.6
1988135117.6
1989132117.6
1990110116.6
1991117116.6
1992124116.6
1993100116.6
1994125116.6
1995114116.6
1996138116.6
1997129116.6
199885116.6
1999124116.6
2001155140.2
2002142140.2
2003154140.2
2004144140.2
2005116140.2
2006134140.2
2007144140.2
2008140140.2
2009133140.2
2010122135
2011128135
2012153135
2013135135
2014148135
2015131135
2016137135
2017136135
2018134135
2019126135
2020157144.3
2021146144.3
2022149144.3
2023130144.3
2024148144.3
2025134144.3
2026146144.3
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). 1975: 10 May 1975 to 5 October 19751976: 24 April 1976 to 14 October 19761977: 23 April 1977 to 17 October 19771978: 12 May 1978 to 15 October 19781979: 13 May 1979 to 12 October 19791980: 17 April 1980 to 11 October 19801981: 16 April 1981 to 28 September 19811982: 16 May 1982 to 23 September 19821983: 19 May 1983 to 25 September 19831984: 14 April 1984 to 8 October 19841985: 6 April 1985 to 5 October 19851986: 20 April 1986 to 11 September 19861987: 15 April 1987 to 8 October 19871988: 26 March 1988 to 26 October 19881989: 5 April 1989 to 13 October 19891990: 21 March 1990 to 15 October 19901991: 7 May 1991 to 20 October 19911992: 25 April 1992 to 13 October 19921993: 29 April 1993 to 3 October 19931994: 15 April 1994 to 2 October 19941995: 29 May 1995 to 20 October 19951996: 7 April 1996 to 12 October 19961997: 20 March 1997 to 5 October 19971998: 14 June 1998 to 19 September 19981999: 18 April 1999 to 15 October 19992001: 25 April 2001 to 20 October 20012002: 30 March 2002 to 13 October 20022003: 12 May 2003 to 28 October 20032004: 19 March 2004 to 15 October 20042005: 14 May 2005 to 14 October 20052006: 28 April 2006 to 30 September 20062007: 12 March 2007 to 24 October 20072008: 13 April 2008 to 29 October 20082009: 19 April 2009 to 24 October 20092010: 15 May 2010 to 3 November 20102011: 31 March 2011 to 23 October 20112012: 19 April 2012 to 29 October 20122013: 14 March 2013 to 1 October 20132014: 8 April 2014 to 24 October 20142015: 27 March 2015 to 1 November 20152016: 5 April 2016 to 22 October 20162017: 22 April 2017 to 24 November 20172018: 10 April 2018 to 28 October 20182019: 8 April 2019 to 26 October 20192020: 24 April 2020 to 4 November 20202021: 2 April 2021 to 15 November 20212022: 24 March 2022 to 21 October 20222023: 10 April 2023 to 5 November 20232024: 20 April 2024 to 26 October 20242025: 25 March 2025 to 24 October 20252026: 17 March 2026 to 9 October 202619751982198919962004201120182025JanFebMarAprMayJunJulAugSepOctNovDec
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
19751975-05-101975-10-05
19761976-04-241976-10-14
19771977-04-231977-10-17
19781978-05-121978-10-15
19791979-05-131979-10-12
19801980-04-171980-10-11
19811981-04-161981-09-28
19821982-05-161982-09-23
19831983-05-191983-09-25
19841984-04-141984-10-08
19851985-04-061985-10-05
19861986-04-201986-09-11
19871987-04-151987-10-08
19881988-03-261988-10-26
19891989-04-051989-10-13
19901990-03-211990-10-15
19911991-05-071991-10-20
19921992-04-251992-10-13
19931993-04-291993-10-03
19941994-04-151994-10-02
19951995-05-291995-10-20
19961996-04-071996-10-12
19971997-03-201997-10-05
19981998-06-141998-09-19
19991999-04-181999-10-15
20012001-04-252001-10-20
20022002-03-302002-10-13
20032003-05-122003-10-28
20042004-03-192004-10-15
20052005-05-142005-10-14
20062006-04-282006-09-30
20072007-03-122007-10-24
20082008-04-132008-10-29
20092009-04-192009-10-24
20102010-05-152010-11-03
20112011-03-312011-10-23
20122012-04-192012-10-29
20132013-03-142013-10-01
20142014-04-082014-10-24
20152015-03-272015-11-01
20162016-04-052016-10-22
20172017-04-222017-11-24
20182018-04-102018-10-28
20192019-04-082019-10-26
20202020-04-242020-11-04
20212021-04-022021-11-15
20222022-03-242022-10-21
20232023-04-102023-11-05
20242024-04-202024-10-26
20252025-03-252025-10-24
20262026-03-172026-10-09

Every Fixed Threshold

Fixed thresholds at Lancaster
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days511572020146
35 C (95 F): Days51104202077
40 C (104 F): Days5036202218
45 C (113 F): Days5320213
90 F (32.2 C): Days511392020117
100 F (37.8 C): Days5167202242
110 F (43.3 C): Days19820248
0 C (32 F): Ice days (max1119841
0 C (32 F): Frost days (min5199200940
-10 C (14 F): Days with min20919901
20 C (68 F): Tropical nights (min5167202250
25 C (77 F): Days with min431520214
10 mm (0.39 in): Days with 10 mm or more rain511520052
25 mm (0.98 in): Days with 25 mm or more rain35620051
50 mm (1.97 in): Days with 50 mm or more rain9119801
10 cm (3.9 in): Days with 10 cm or more snowfall4319791
25 cm (9.8 in): Days with 25 cm or more snowfall1119841

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1975.

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).