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Built 2026-10-19 (19 October 2026)

Overton Threshold Days by Year (USC00265846)

15 fixed thresholds counted per year at Overton (USC00265846): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Overton Thresholds

  • Overton: nights with a minimum temperature at or below 0 C (32 F) in 55 years, most in 1956 with 109.
  • Overton: nights with a minimum temperature at or above 20 C (68 F) in 55 years, most in 2015 with 116.
  • Overton: nights with a minimum temperature at or above 25 C (77 F) in 55 years, most in 2022 with 60.
  • Overton: days with a maximum temperature at or above 30 C (86 F) in 53 years, most in 2004 with 194.
  • 15 fixed thresholds have at least one qualifying day at Overton.
53 years with a qualifying day
Days at or above 30 C (86 F) per year at Overton Days per year at Overton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 194 in 2004. 0501001502001942: 1771944: 1701945: 1751946: 1631947: 1811949: 1771950: 1881951: 1611953: 1721954: 1911955: 1631956: 1841957: 1521958: 1741959: 1791960: 1791961: 1681962: 1881992: 1821993: 1731994: 1751995: 1751996: 1851997: 1921998: 1631999: 1822000: 1742001: 1932002: 1902003: 1772004: 1942005: 1772006: 1712007: 1902008: 1782009: 1782010: 1702011: 1662012: 1872013: 1732014: 1842015: 1722016: 1702017: 1762018: 1762019: 1652020: 1842021: 1692022: 1852023: 1742024: 1822025: 1772026: 184194219501957199219982004201020162022
Days per year at Overton with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 194 in 2004.
Days at or above 30 C (86 F) per year at Overton
YearDaysDecade average
1942177173.8
1944170173.8
1945175173.8
1946163173.8
1947181173.8
1949177173.8
1950188173.8
1951161173.8
1953172173.8
1954191173.8
1955163173.8
1956184173.8
1957152173.8
1958174173.8
1959179173.8
1960179178.3
1961168178.3
1962188178.3
1992182178.4
1993173178.4
1994175178.4
1995175178.4
1996185178.4
1997192178.4
1998163178.4
1999182178.4
2000174182.2
2001193182.2
2002190182.2
2003177182.2
2004194182.2
2005177182.2
2006171182.2
2007190182.2
2008178182.2
2009178182.2
2010170173.9
2011166173.9
2012187173.9
2013173173.9
2014184173.9
2015172173.9
2016170173.9
2017176173.9
2018176173.9
2019165173.9
2020184179.3
2021169179.3
2022185179.3
2023174179.3
2024182179.3
2025177179.3
2026184179.3
First to last qualifying date each year at Overton For each year, a bar from the first to the last day at Overton meeting 30 C (86 F). 1942: 29 March 1942 to 25 October 19421944: 2 April 1944 to 4 November 19441945: 16 April 1945 to 21 October 19451946: 11 April 1946 to 3 October 19461947: 16 March 1947 to 31 October 19471949: 7 April 1949 to 6 November 19491950: 23 March 1950 to 3 November 19501951: 9 April 1951 to 21 October 19511953: 25 March 1953 to 19 October 19531954: 5 April 1954 to 24 October 19541955: 10 April 1955 to 1 November 19551956: 19 March 1956 to 22 October 19561957: 7 April 1957 to 11 October 19571958: 16 April 1958 to 20 October 19581959: 2 April 1959 to 28 October 19591960: 21 March 1960 to 26 October 19601961: 3 April 1961 to 26 October 19611962: 26 March 1962 to 4 November 19621992: 9 April 1992 to 23 October 19921993: 17 April 1993 to 25 October 19931994: 14 March 1994 to 28 October 19941995: 17 March 1995 to 15 November 19951996: 10 March 1996 to 18 October 19961997: 11 March 1997 to 21 October 19971998: 23 March 1998 to 21 October 19981999: 3 March 1999 to 3 November 19992000: 26 March 2000 to 30 September 20002001: 19 March 2001 to 28 October 20012002: 21 March 2002 to 21 October 20022003: 13 March 2003 to 29 October 20032004: 8 March 2004 to 17 October 20042005: 9 March 2005 to 25 October 20052006: 4 April 2006 to 12 October 20062007: 12 March 2007 to 10 November 20072008: 12 April 2008 to 18 November 20082009: 19 March 2009 to 7 November 20092010: 31 March 2010 to 7 November 20102011: 1 April 2011 to 26 October 20112012: 31 March 2012 to 7 November 20122013: 15 March 2013 to 27 October 20132014: 18 March 2014 to 1 November 20142015: 15 March 2015 to 17 October 20152016: 21 March 2016 to 9 November 20162017: 12 March 2017 to 29 October 20172018: 31 March 2018 to 30 October 20182019: 8 April 2019 to 24 October 20192020: 23 April 2020 to 7 November 20202021: 3 April 2021 to 7 October 20212022: 26 March 2022 to 23 October 20222023: 10 April 2023 to 7 November 20232024: 12 April 2024 to 29 October 20242025: 25 March 2025 to 28 October 20252026: 2 March 2026 to 11 October 202619421951195919952002200920162023JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Overton meeting 30 C (86 F).
First to last qualifying date each year at Overton
YearFirst dateLast date
19421942-03-291942-10-25
19441944-04-021944-11-04
19451945-04-161945-10-21
19461946-04-111946-10-03
19471947-03-161947-10-31
19491949-04-071949-11-06
19501950-03-231950-11-03
19511951-04-091951-10-21
19531953-03-251953-10-19
19541954-04-051954-10-24
19551955-04-101955-11-01
19561956-03-191956-10-22
19571957-04-071957-10-11
19581958-04-161958-10-20
19591959-04-021959-10-28
19601960-03-211960-10-26
19611961-04-031961-10-26
19621962-03-261962-11-04
19921992-04-091992-10-23
19931993-04-171993-10-25
19941994-03-141994-10-28
19951995-03-171995-11-15
19961996-03-101996-10-18
19971997-03-111997-10-21
19981998-03-231998-10-21
19991999-03-031999-11-03
20002000-03-262000-09-30
20012001-03-192001-10-28
20022002-03-212002-10-21
20032003-03-132003-10-29
20042004-03-082004-10-17
20052005-03-092005-10-25
20062006-04-042006-10-12
20072007-03-122007-11-10
20082008-04-122008-11-18
20092009-03-192009-11-07
20102010-03-312010-11-07
20112011-04-012011-10-26
20122012-03-312012-11-07
20132013-03-152013-10-27
20142014-03-182014-11-01
20152015-03-152015-10-17
20162016-03-212016-11-09
20172017-03-122017-10-29
20182018-03-312018-10-30
20192019-04-082019-10-24
20202020-04-232020-11-07
20212021-04-032021-10-07
20222022-03-262022-10-23
20232023-04-102023-11-07
20242024-04-122024-10-29
20252025-03-252025-10-28
20262026-03-022026-10-11

Every Fixed Threshold

Fixed thresholds at Overton
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days531942004184
35 C (95 F): Days531562001151
40 C (104 F): Days53109200179
45 C (113 F): Days5333199421
50 C (122 F): Days4119541
90 F (32.2 C): Days531781954172
100 F (37.8 C): Days531392001111
110 F (43.3 C): Days5355200249
120 F (48.9 C): Days16419941
0 C (32 F): Frost days (min5510919563
-10 C (14 F): Days with min5419541
20 C (68 F): Tropical nights (min551162015113
25 C (77 F): Days with min5560202259
10 mm (0.39 in): Days with 10 mm or more rain451020192
25 mm (0.98 in): Days with 25 mm or more rain14219601

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.

Download the Data

  • Data for Overton 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).