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Built 2026-10-19 (19 October 2026)

Forsan Threshold Days by Year (USC00413253)

6 fixed thresholds counted per year at Forsan (USC00413253): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Forsan Thresholds

  • Forsan: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1969 with 24.
  • Forsan: days with 25 mm (0.98 in) or more of precipitation in 55 years, most in 2004 with 11.
  • Forsan: days with 50 mm (1.97 in) or more of precipitation in 37 years, most in 2004 with 7.
  • Forsan: days with 10 cm (3.9 in) or more of snowfall in 8 years, most in 1973 with 2.
  • 6 fixed thresholds have at least one qualifying day at Forsan.
57 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Forsan Days per year at Forsan with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1969. 01020301950: 151951: 81952: 101953: 101954: 101955: 91956: 91957: 221958: 191959: 191960: 141961: 151962: 111963: 131964: 141965: 171966: 191967: 141968: 211969: 241970: 161971: 161972: 191973: 181974: 241975: 231976: 211977: 151978: 91979: 81980: 201981: 181982: 151983: 61984: 111985: 201986: 201987: 161988: 101989: 151990: 221991: 181992: 221993: 151994: 111995: 111996: 91997: 151998: 131999: 122000: 122001: 122002: 172003: 112004: 232005: 122006: 141950195619621968197419801986199219982004
Days per year at Forsan with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1969.
Days with 10 mm (0.39 in) or more of precipitation per year at Forsan
YearDaysDecade average
19501513.1
1951813.1
19521013.1
19531013.1
19541013.1
1955913.1
1956913.1
19572213.1
19581913.1
19591913.1
19601416.2
19611516.2
19621116.2
19631316.2
19641416.2
19651716.2
19661916.2
19671416.2
19682116.2
19692416.2
19701616.9
19711616.9
19721916.9
19731816.9
19742416.9
19752316.9
19762116.9
19771516.9
1978916.9
1979816.9
19802015.1
19811815.1
19821515.1
1983615.1
19841115.1
19852015.1
19862015.1
19871615.1
19881015.1
19891515.1
19902214.8
19911814.8
19922214.8
19931514.8
19941114.8
19951114.8
1996914.8
19971514.8
19981314.8
19991214.8
20001214.4
20011214.4
20021714.4
20031114.4
20042314.4
20051214.4
20061414.4
First to last qualifying date each year at Forsan For each year, a bar from the first to the last day at Forsan meeting 10 mm (0.39 in). 1950: 1 February 1950 to 1 October 19501951: 21 April 1951 to 18 October 19511952: 20 April 1952 to 18 December 19521953: 24 February 1953 to 31 October 19531954: 12 April 1954 to 14 November 19541955: 10 January 1955 to 5 October 19551956: 5 April 1956 to 19 December 19561957: 18 February 1957 to 10 November 19571958: 22 February 1958 to 14 November 19581959: 26 February 1959 to 17 December 19591960: 5 January 1960 to 30 December 19601961: 8 January 1961 to 15 November 19611962: 20 March 1962 to 20 December 19621963: 5 April 1963 to 22 November 19631964: 31 January 1964 to 10 December 19641965: 17 February 1965 to 18 October 19651966: 9 February 1966 to 5 October 19661967: 20 May 1967 to 16 December 19671968: 18 January 1968 to 28 November 19681969: 21 February 1969 to 29 December 19691970: 2 February 1970 to 16 October 19701971: 16 April 1971 to 5 December 19711972: 20 April 1972 to 31 October 19721973: 9 January 1973 to 22 September 19731974: 23 January 1974 to 31 December 19741975: 23 January 1975 to 24 December 19751976: 15 April 1976 to 13 November 19761977: 12 January 1977 to 8 November 19771978: 12 February 1978 to 3 November 19781979: 21 May 1979 to 17 August 19791980: 24 April 1980 to 8 December 19801981: 9 January 1981 to 22 October 19811982: 5 May 1982 to 27 December 19821983: 20 January 1983 to 23 November 19831984: 9 August 1984 to 31 December 19841985: 21 February 1985 to 18 October 19851986: 24 May 1986 to 22 December 19861987: 6 February 1987 to 27 December 19871988: 18 February 1988 to 10 December 19881989: 28 January 1989 to 13 September 19891990: 17 January 1990 to 16 December 19901991: 18 January 1991 to 26 December 19911992: 13 January 1992 to 14 December 19921993: 15 February 1993 to 22 December 19931994: 23 January 1994 to 28 December 19941995: 18 January 1995 to 3 October 19951996: 5 April 1996 to 29 November 19961997: 20 February 1997 to 21 December 19971998: 31 January 1998 to 12 December 19981999: 8 March 1999 to 8 October 19992000: 8 January 2000 to 8 November 20002001: 15 February 2001 to 28 November 20012002: 28 January 2002 to 9 December 20022003: 16 March 2003 to 7 November 20032004: 16 January 2004 to 23 November 20042005: 6 February 2005 to 10 October 20052006: 24 February 2006 to 30 December 200619501958196619741982199019982006JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Forsan meeting 10 mm (0.39 in).
First to last qualifying date each year at Forsan
YearFirst dateLast date
19501950-02-011950-10-01
19511951-04-211951-10-18
19521952-04-201952-12-18
19531953-02-241953-10-31
19541954-04-121954-11-14
19551955-01-101955-10-05
19561956-04-051956-12-19
19571957-02-181957-11-10
19581958-02-221958-11-14
19591959-02-261959-12-17
19601960-01-051960-12-30
19611961-01-081961-11-15
19621962-03-201962-12-20
19631963-04-051963-11-22
19641964-01-311964-12-10
19651965-02-171965-10-18
19661966-02-091966-10-05
19671967-05-201967-12-16
19681968-01-181968-11-28
19691969-02-211969-12-29
19701970-02-021970-10-16
19711971-04-161971-12-05
19721972-04-201972-10-31
19731973-01-091973-09-22
19741974-01-231974-12-31
19751975-01-231975-12-24
19761976-04-151976-11-13
19771977-01-121977-11-08
19781978-02-121978-11-03
19791979-05-211979-08-17
19801980-04-241980-12-08
19811981-01-091981-10-22
19821982-05-051982-12-27
19831983-01-201983-11-23
19841984-08-091984-12-31
19851985-02-211985-10-18
19861986-05-241986-12-22
19871987-02-061987-12-27
19881988-02-181988-12-10
19891989-01-281989-09-13
19901990-01-171990-12-16
19911991-01-181991-12-26
19921992-01-131992-12-14
19931993-02-151993-12-22
19941994-01-231994-12-28
19951995-01-181995-10-03
19961996-04-051996-11-29
19971997-02-201997-12-21
19981998-01-311998-12-12
19991999-03-081999-10-08
20002000-01-082000-11-08
20012001-02-152001-11-28
20022002-01-282002-12-09
20032003-03-162003-11-07
20042004-01-162004-11-23
20052005-02-062005-10-10
20062006-02-242006-12-30

Every Fixed Threshold

Fixed thresholds at Forsan
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain5724196914
25 mm (0.98 in): Days with 25 mm or more rain551120043
50 mm (1.97 in): Days with 50 mm or more rain37720041
100 mm (3.94 in): Days with 100 mm or more rain6219611
10 cm (3.9 in): Days with 10 cm or more snowfall8219731
25 cm (9.8 in): Days with 25 cm or more snowfall1120011

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.

Download the Data

  • Data for Forsan 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 (2025-12-31).