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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Overton Threshold Days by Year

4 fixed thresholds counted per year at Overton (ASN00010875): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Overton Thresholds

  • Overton: days with 10 mm (0.39 in) or more of precipitation in 24 years, most in 1983 with 20.
  • Overton: days with 25 mm (0.98 in) or more of precipitation in 18 years, most in 1983 with 6.
  • Overton: days with 50 mm (1.97 in) or more of precipitation in 4 years, most in 1982 with 2.
  • Overton: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1982 with 1.
  • 4 fixed thresholds have at least one qualifying day at Overton.
24 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Overton Days per year at Overton with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 20 in 1983. 051015201976: 131977: 151978: 141979: 91980: 171981: 151982: 91983: 201984: 171985: 131986: 91987: 91988: 151989: 161990: 141991: 181992: 141993: 171994: 91995: 121996: 152000: 112002: 82025: 1519761979198219851988199119942000
Days per year at Overton with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 20 in 1983.
Days with 10 mm (0.39 in) or more of precipitation per year at Overton
YearDaysDecade average
19761312.8
19771512.8
19781412.8
1979912.8
19801714
19811514
1982914
19832014
19841714
19851314
1986914
1987914
19881514
19891614
19901414.1
19911814.1
19921414.1
19931714.1
1994914.1
19951214.1
19961514.1
2000119.5
200289.5
20251515
First to last qualifying date each year at Overton For each year, a bar from the first to the last day at Overton meeting 10 mm (0.39 in). 1976: 7 January 1976 to 3 October 19761977: 27 April 1977 to 24 November 19771978: 2 January 1978 to 3 November 19781979: 12 January 1979 to 10 November 19791980: 11 February 1980 to 31 December 19801981: 4 April 1981 to 26 November 19811982: 21 January 1982 to 27 November 19821983: 16 February 1983 to 27 December 19831984: 30 April 1984 to 17 November 19841985: 10 February 1985 to 27 August 19851986: 21 February 1986 to 11 September 19861987: 8 April 1987 to 24 December 19871988: 24 March 1988 to 22 September 19881989: 13 January 1989 to 30 August 19891990: 29 January 1990 to 10 October 19901991: 26 February 1991 to 25 December 19911992: 1 February 1992 to 14 November 19921993: 19 March 1993 to 16 November 19931994: 12 May 1994 to 14 October 19941995: 22 May 1995 to 29 December 19951996: 31 May 1996 to 12 December 19962000: 15 January 2000 to 6 September 20002002: 23 February 2002 to 1 December 20022025: 3 April 2025 to 30 October 202519761979198219851988199119942000JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Overton meeting 10 mm (0.39 in).
First to last qualifying date each year at Overton
YearFirst dateLast date
19761976-01-071976-10-03
19771977-04-271977-11-24
19781978-01-021978-11-03
19791979-01-121979-11-10
19801980-02-111980-12-31
19811981-04-041981-11-26
19821982-01-211982-11-27
19831983-02-161983-12-27
19841984-04-301984-11-17
19851985-02-101985-08-27
19861986-02-211986-09-11
19871987-04-081987-12-24
19881988-03-241988-09-22
19891989-01-131989-08-30
19901990-01-291990-10-10
19911991-02-261991-12-25
19921992-02-011992-11-14
19931993-03-191993-11-16
19941994-05-121994-10-14
19951995-05-221995-12-29
19961996-05-311996-12-12
20002000-01-152000-09-06
20022002-02-232002-12-01
20252025-04-032025-10-30

Every Fixed Threshold

Fixed thresholds at Overton
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2420198315
25 mm (0.98 in): Days with 25 mm or more rain18619832
50 mm (1.97 in): Days with 50 mm or more rain4219821
100 mm (3.94 in): Days with 100 mm or more rain1119821

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1976.

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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).