Windsor A Threshold Days by Year (CA006139525)

15 fixed thresholds counted per year at Windsor A (CA006139525): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Windsor A Thresholds

Windsor A: days with a maximum temperature at or above 30 C (86 F) in 43 years, most in 1955 with 47.
Windsor A: days with a maximum temperature at or above 90 F (32.2 C) in 43 years, most in 1952 with 27.
Windsor A: days with a maximum temperature at or below 0 C (32 F) in 43 years, most in 1947 with 72.
Windsor A: nights with a minimum temperature at or below 0 C (32 F) in 43 years, most in 1943 with 148.
15 fixed thresholds have at least one qualifying day at Windsor A.

Days at or above 30 C (86 F)

43 years with a qualifying day

Days per year at Windsor A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 47 in 1955.

Days at or above 30 C (86 F) per year at Windsor A
Year	Days	Decade average
1941	43	30.2
1942	21	30.2
1943	26	30.2
1944	45	30.2
1945	22	30.2
1946	25	30.2
1947	28	30.2
1948	23	30.2
1949	39	30.2
1950	20	27.5
1951	15	27.5
1952	46	27.5
1953	30	27.5
1954	32	27.5
1955	47	27.5
1956	19	27.5
1957	20	27.5
1958	13	27.5
1959	33	27.5
1960	13	19.8
1961	15	19.8
1962	18	19.8
1963	28	19.8
1964	30	19.8
1965	16	19.8
1966	25	19.8
1967	15	19.8
1968	21	19.8
1969	17	19.8
1970	30	23.7
1971	30	23.7
1972	15	23.7
1973	24	23.7
1974	22	23.7
1975	30	23.7
1976	21	23.7
1977	21	23.7
1978	31	23.7
1979	13	23.7
1980	19	19
1981	11	19
1982	15	19
1983	31	19

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

First to last qualifying date each year at Windsor A
Year	First date	Last date
1941	1941-05-05	1941-09-22
1942	1942-04-30	1942-09-14
1943	1943-06-04	1943-09-01
1944	1944-05-26	1944-09-04
1945	1945-06-14	1945-09-23
1946	1946-06-11	1946-10-06
1947	1947-06-10	1947-09-19
1948	1948-06-03	1948-09-19
1949	1949-05-04	1949-08-27
1950	1950-06-08	1950-08-28
1951	1951-06-01	1951-10-05
1952	1952-06-06	1952-10-01
1953	1953-06-04	1953-10-03
1954	1954-06-10	1954-09-07
1955	1955-05-03	1955-09-19
1956	1956-05-30	1956-08-31
1957	1957-06-16	1957-09-02
1958	1958-06-30	1958-09-06
1959	1959-06-08	1959-09-23
1960	1960-06-04	1960-09-08
1961	1961-06-12	1961-09-13
1962	1962-05-14	1962-09-13
1963	1963-06-06	1963-10-07
1964	1964-05-22	1964-09-10
1965	1965-06-06	1965-09-19
1966	1966-05-27	1966-09-02
1967	1967-06-09	1967-08-17
1968	1968-06-06	1968-08-24
1969	1969-05-28	1969-08-31
1970	1970-06-07	1970-09-21
1971	1971-05-18	1971-09-08
1972	1972-06-14	1972-08-01
1973	1973-06-09	1973-09-27
1974	1974-06-07	1974-08-26
1975	1975-05-19	1975-08-13
1976	1976-06-07	1976-09-08
1977	1977-05-13	1977-08-28
1978	1978-05-27	1978-09-20
1979	1979-05-11	1979-09-06
1980	1980-04-22	1980-09-22
1981	1981-06-15	1981-07-18
1982	1982-05-18	1982-09-14
1983	1983-06-12	1983-09-18

Every Fixed Threshold

Fixed thresholds at Windsor A
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	43	47	1955	31
35 C (95 F): Days	22	8	1944	1
90 F (32.2 C): Days	43	27	1952	7
100 F (37.8 C): Days	1	1	1941	1
0 C (32 F): Ice days (max	43	72	1947	45
0 C (32 F): Frost days (min	43	148	1943	116
-10 C (14 F): Days with min	43	56	1963	23
-20 C (-4 F): Days with min	29	8	1982	5
20 C (68 F): Tropical nights (min	43	35	1949	28
25 C (77 F): Days with min	5	1	1942	1
10 mm (0.39 in): Days with 10 mm or more rain	43	43	1983	43
25 mm (0.98 in): Days with 25 mm or more rain	42	12	1969	7
50 mm (1.97 in): Days with 50 mm or more rain	17	2	1949	1
10 cm (3.9 in): Days with 10 cm or more snowfall	29	5	1951	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1965	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1941.

Download the Data

Data for Windsor A 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Windsor A Threshold Days by Year (CA006139525)

Key Facts for Windsor A Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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