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Built 2026-10-17 (17 October 2026)

Winchester Threshold Days by Year

4 fixed thresholds counted per year at Winchester (ASN00008136): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Winchester Thresholds

  • Winchester: days with 10 mm (0.39 in) or more of precipitation in 29 years, most in 1951 with 18.
  • Winchester: days with 25 mm (0.98 in) or more of precipitation in 22 years, most in 1917 with 6.
  • Winchester: days with 50 mm (1.97 in) or more of precipitation in 8 years, most in 1934 with 2.
  • Winchester: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1918 with 1.
  • 4 fixed thresholds have at least one qualifying day at Winchester.
29 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Winchester Days per year at Winchester with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1951. 051015201916: 131917: 161918: 171919: 91920: 101921: 131922: 101923: 141924: 111925: 161926: 91927: 51928: 51930: 111931: 111932: 131933: 151934: 111935: 101946: 121947: 91948: 61951: 181952: 81954: 71956: 141957: 111959: 101960: 121916191919221925192819321935194819541959
Days per year at Winchester with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1951.
Days with 10 mm (0.39 in) or more of precipitation per year at Winchester
YearDaysDecade average
19161313.8
19171613.8
19181713.8
1919913.8
19201010.3
19211310.3
19221010.3
19231410.3
19241110.3
19251610.3
1926910.3
1927510.3
1928510.3
19301111.8
19311111.8
19321311.8
19331511.8
19341111.8
19351011.8
1946129
194799
194869
19511811.3
1952811.3
1954711.3
19561411.3
19571111.3
19591011.3
19601212
First to last qualifying date each year at Winchester For each year, a bar from the first to the last day at Winchester meeting 10 mm (0.39 in). 1916: 21 January 1916 to 5 October 19161917: 18 March 1917 to 9 December 19171918: 20 February 1918 to 16 September 19181919: 3 May 1919 to 2 November 19191920: 12 March 1920 to 11 September 19201921: 17 February 1921 to 17 September 19211922: 16 April 1922 to 25 August 19221923: 31 January 1923 to 12 July 19231924: 31 May 1924 to 23 December 19241925: 15 January 1925 to 25 December 19251926: 4 January 1926 to 20 November 19261927: 15 March 1927 to 26 July 19271928: 18 April 1928 to 17 July 19281930: 5 March 1930 to 9 October 19301931: 4 May 1931 to 4 November 19311932: 29 January 1932 to 29 October 19321933: 21 May 1933 to 3 October 19331934: 8 March 1934 to 23 August 19341935: 6 January 1935 to 29 August 19351946: 6 June 1946 to 12 November 19461947: 19 January 1947 to 25 October 19471948: 30 April 1948 to 15 November 19481951: 11 February 1951 to 27 September 19511952: 12 February 1952 to 7 August 19521954: 23 April 1954 to 9 September 19541956: 8 February 1956 to 29 July 19561957: 18 March 1957 to 23 August 19571959: 5 February 1959 to 17 September 19591960: 23 March 1960 to 23 July 196019161920192419281933194719541960JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Winchester meeting 10 mm (0.39 in).
First to last qualifying date each year at Winchester
YearFirst dateLast date
19161916-01-211916-10-05
19171917-03-181917-12-09
19181918-02-201918-09-16
19191919-05-031919-11-02
19201920-03-121920-09-11
19211921-02-171921-09-17
19221922-04-161922-08-25
19231923-01-311923-07-12
19241924-05-311924-12-23
19251925-01-151925-12-25
19261926-01-041926-11-20
19271927-03-151927-07-26
19281928-04-181928-07-17
19301930-03-051930-10-09
19311931-05-041931-11-04
19321932-01-291932-10-29
19331933-05-211933-10-03
19341934-03-081934-08-23
19351935-01-061935-08-29
19461946-06-061946-11-12
19471947-01-191947-10-25
19481948-04-301948-11-15
19511951-02-111951-09-27
19521952-02-121952-08-07
19541954-04-231954-09-09
19561956-02-081956-07-29
19571957-03-181957-08-23
19591959-02-051959-09-17
19601960-03-231960-07-23

Every Fixed Threshold

Fixed thresholds at Winchester
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2918195112
25 mm (0.98 in): Days with 25 mm or more rain22619173
50 mm (1.97 in): Days with 50 mm or more rain8219342
100 mm (3.94 in): Days with 100 mm or more rain1119181

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1916.

Download the Data

  • Data for Winchester 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).