Windsor Threshold Days by Year (USC00239032)

21 fixed thresholds counted per year at Windsor (USC00239032): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Windsor Thresholds

Windsor: days with a maximum temperature at or above 30 C (86 F) in 60 years, most in 1963 with 113.
Windsor: days with a maximum temperature at or above 90 F (32.2 C) in 60 years, most in 1954 with 82.
Windsor: days with a maximum temperature at or below 0 C (32 F) in 60 years, most in 1978 with 49.
Windsor: days with 10 mm (0.39 in) or more of precipitation in 56 years, most in 1973 with 58.
21 fixed thresholds have at least one qualifying day at Windsor.

Days at or above 30 C (86 F)

60 years with a qualifying day

Days per year at Windsor with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 113 in 1963.

Days at or above 30 C (86 F) per year at Windsor
Year	Days	Decade average
1893	109	81.1
1894	91	81.1
1895	64	81.1
1896	76	81.1
1897	97	81.1
1898	54	81.1
1899	77	81.1
1900	75	75
1901	72	75
1906	78	75
1951	43	77.3
1952	97	77.3
1953	108	77.3
1954	97	77.3
1955	74	77.3
1956	99	77.3
1957	59	77.3
1958	48	77.3
1959	71	77.3
1960	68	75
1961	54	75
1963	113	75
1964	86	75
1965	71	75
1966	65	75
1969	68	75
1970	72	72.6
1971	82	72.6
1972	74	72.6
1973	73	72.6
1974	53	72.6
1975	70	72.6
1976	76	72.6
1977	69	72.6
1978	83	72.6
1979	74	72.6
1980	104	74.6
1981	51	74.6
1982	57	74.6
1983	89	74.6
1984	74	74.6
1985	60	74.6
1986	77	74.6
1987	85	74.6
1991	74	54.8
1992	32	54.8
1993	43	54.8
1994	61	54.8
1995	59	54.8
1996	43	54.8
1997	50	54.8
1998	75	54.8
1999	56	54.8
2001	50	56.1
2002	76	56.1
2003	60	56.1
2004	22	56.1
2005	68	56.1
2006	71	56.1
2008	46	56.1

For each year, a bar from the first to the last day at Windsor meeting 30 C (86 F).

First to last qualifying date each year at Windsor
Year	First date	Last date
1893	1893-04-06	1893-10-11
1894	1894-04-28	1894-10-22
1895	1895-03-27	1895-09-25
1896	1896-04-15	1896-10-01
1897	1897-04-26	1897-10-15
1898	1898-05-09	1898-09-28
1899	1899-05-15	1899-10-22
1900	1900-05-12	1900-10-05
1901	1901-05-02	1901-10-21
1906	1906-04-24	1906-11-07
1951	1951-04-28	1951-10-04
1952	1952-04-29	1952-10-12
1953	1953-05-24	1953-10-16
1954	1954-04-06	1954-10-03
1955	1955-05-04	1955-09-21
1956	1956-04-27	1956-10-12
1957	1957-06-06	1957-09-19
1958	1958-05-31	1958-10-08
1959	1959-04-30	1959-09-27
1960	1960-05-23	1960-10-11
1961	1961-05-13	1961-09-11
1963	1963-04-21	1963-10-22
1964	1964-05-04	1964-10-17
1965	1965-04-21	1965-10-10
1966	1966-05-06	1966-09-06
1969	1969-05-28	1969-10-04
1970	1970-04-27	1970-09-20
1971	1971-05-17	1971-10-02
1972	1972-04-13	1972-09-21
1973	1973-06-09	1973-10-04
1974	1974-05-14	1974-08-27
1975	1975-05-19	1975-10-13
1976	1976-05-23	1976-10-03
1977	1977-04-17	1977-09-27
1978	1978-05-25	1978-10-22
1979	1979-05-09	1979-10-22
1980	1980-05-26	1980-10-10
1981	1981-06-05	1981-09-30
1982	1982-06-09	1982-10-06
1983	1983-06-13	1983-10-04
1984	1984-04-27	1984-09-25
1985	1985-05-24	1985-09-21
1986	1986-04-26	1986-09-29
1987	1987-04-19	1987-09-27
1991	1991-05-13	1991-10-23
1992	1992-06-16	1992-09-15
1993	1993-06-15	1993-09-22
1994	1994-06-12	1994-09-30
1995	1995-05-13	1995-09-06
1996	1996-04-19	1996-08-22
1997	1997-05-18	1997-10-03
1998	1998-05-13	1998-09-29
1999	1999-06-05	1999-10-16
2001	2001-05-17	2001-09-08
2002	2002-06-01	2002-10-02
2003	2003-05-31	2003-08-29
2004	2004-06-08	2004-09-15
2005	2005-05-11	2005-09-23
2006	2006-04-14	2006-10-04
2008	2008-05-26	2008-09-03

Every Fixed Threshold

Fixed thresholds at Windsor
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	60	113	1963	46
35 C (95 F): Days	55	56	1954	7
40 C (104 F): Days	11	19	1980	2
45 C (113 F): Days	1	2	1954	2
90 F (32.2 C): Days	60	82	1954	19
100 F (37.8 C): Days	33	36	1954	11
110 F (43.3 C): Days	1	5	1954	5
0 C (32 F): Ice days (max	60	49	1978	21
0 C (32 F): Frost days (min	55	144	1979	119
-10 C (14 F): Days with min	55	53	1978	29
-20 C (-4 F): Days with min	36	17	1979	1
-30 C (-22 F): Days with min	3	3	1899	3
20 C (68 F): Tropical nights (min	55	76	1954	39
25 C (77 F): Days with min	16	12	1954	2
10 mm (0.39 in): Days with 10 mm or more rain	56	58	1973	39
25 mm (0.98 in): Days with 25 mm or more rain	56	22	2008	22
50 mm (1.97 in): Days with 50 mm or more rain	52	8	1981	5
100 mm (3.94 in): Days with 100 mm or more rain	14	2	1981	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1980	1
10 cm (3.9 in): Days with 10 cm or more snowfall	31	5	1975	2
25 cm (9.8 in): Days with 25 cm or more snowfall	2	2	1973	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

Data for Windsor 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Windsor Threshold Days by Year (USC00239032)

Key Facts for Windsor Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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