Windsor Weather Records (USC00059147)

Record envelope, standing records and threshold days for Windsor (USC00059147), Colorado, United States, with 50 years of record.

Key Facts for Windsor

Windsor (USC00059147) is a weather station in Colorado, United States at 40.47 latitude and -104.90 longitude, 1,457 m (4,781 ft) above sea level.
The station reports from 1941 to 1990, 50 years of record.
1,464 records set at Windsor still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Windsor set a daily record precipitation of 9.4 mm (0.37 in) on 30 March 1990.

About the Station

Location: Colorado, United States, 40.47 latitude, -104.90 longitude.
Elevation: 1,457 m (4,781 ft).
Period of record: 1941 to 1990, 50 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Windsor. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Windsor, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	19.4 C (66.9 F)	-36.7 C (-34.1 F)	n/a	n/a
Feb	20.0 C (68.0 F)	-32.2 C (-26.0 F)	n/a	n/a
Mar	27.8 C (82.0 F)	-28.9 C (-20.0 F)	n/a	n/a
Apr	28.9 C (84.0 F)	-21.1 C (-6.0 F)	n/a	n/a
May	36.7 C (98.1 F)	-3.9 C (25.0 F)	n/a	n/a
Jun	37.8 C (100.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	38.9 C (102.0 F)	3.3 C (37.9 F)	n/a	n/a
Aug	38.3 C (100.9 F)	4.4 C (39.9 F)	n/a	n/a
Sep	36.7 C (98.1 F)	-5.6 C (21.9 F)	n/a	n/a
Oct	32.2 C (90.0 F)	-8.9 C (16.0 F)	n/a	n/a
Nov	25.6 C (78.1 F)	-21.1 C (-6.0 F)	n/a	n/a
Dec	19.4 C (66.9 F)	-26.7 C (-16.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Windsor still stand. 1946 holds the most, with 237.

All-Time Record Progression

2 new records

2 all-time records were set at Windsor between 29 May 1975 and 14 January 1984. Each dot is a new record.

When Windsor set new all-time records
Date	Kind	Detail
1975-05-29	Record daily precipitation	Record daily precipitation 86.4 mm (3.4 in)
1984-01-14	Record daily snowfall	Record daily snowfall 38.1 cm (15.0 in)

Wettest Day of Each Month

May: 86.4 mm (3.4 in)

The wettest day on record for each calendar month at Windsor. The most was 86.4 mm (3.4 in) on 29 May 1975.

Record daily precipitation for each month at Windsor
Month	Record daily precipitation (mm)	Date
Jan	20.3 mm (0.8 in)	26 January 1944
Feb	14.5 mm (0.6 in)	9 February 1942
Mar	52.6 mm (2.1 in)	6 March 1990
Apr	39.4 mm (1.6 in)	9 April 1944
May	86.4 mm (3.4 in)	29 May 1975
Jun	71.1 mm (2.8 in)	15 June 1949
Jul	78.5 mm (3.1 in)	8 July 1988
Aug	59.4 mm (2.3 in)	3 August 1951
Sep	55.6 mm (2.2 in)	23 September 1963
Oct	45.0 mm (1.8 in)	17 October 1942
Nov	23.4 mm (0.9 in)	1 November 1986
Dec	20.6 mm (0.8 in)	9 December 1985

Period of Record Coverage

1941 to 1970

9 years of record at Windsor, 1941 to 1970. 3 years have data for under 90 percent of days and are left out of rankings: 1941, 1948, 1970.

Latest Records

Latest records at Windsor
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 March 1990	Windsor, US	daily rain	9.4 mm (0.37 in)	0.3 mm (0.01 in)	20 years	11 of 100 (Routine)
9 March 1990	Windsor, US	daily snow depth	5.1 cm (2.0 in)	2.6 cm (1.0 in)	48 years	20 of 100 (Routine)
8 March 1990	Windsor, US	daily snowfall (Tie)	2.5 cm (1.0 in)	tie	3 years	1 of 100 (Routine)
7 March 1990	Windsor, US	daily rain	9.4 mm (0.37 in)	7.4 mm (0.29 in)	8 years	20 of 100 (Routine)
6 March 1990	Windsor, US	monthly rain	52.6 mm (2.1 in)	24.7 mm (1.0 in)	28 years	63 of 100 (Major)
15 February 1990	Windsor, US	daily snowfall (Tie)	5.1 cm (2.0 in)	tie	24 years	3 of 100 (Routine)
14 February 1990	Windsor, US	daily snowfall	5.1 cm (2.0 in)	3.8 cm (1.5 in)	48 years	29 of 100 (Routine)
14 February 1990	Windsor, US	daily rain	3.3 mm (0.13 in)	0.5 mm (0.02 in)	48 years	20 of 100 (Routine)
13 February 1990	Windsor, US	daily snowfall (Tie)	5.1 cm (2.0 in)	tie	39 years	4 of 100 (Routine)
22 January 1990	Windsor, US	daily snow depth (Tie)	12.7 cm (5.0 in)	tie	4 years	1 of 100 (Routine)
21 January 1990	Windsor, US	daily snow depth (Tie)	12.7 cm (5.0 in)	tie	4 years	1 of 100 (Routine)
20 January 1990	Windsor, US	daily snow depth	17.8 cm (7.0 in)	2.6 cm (1.0 in)	4 years	9 of 100 (Routine)
19 January 1990	Windsor, US	daily snowfall	11.4 cm (4.5 in)	6.3 cm (2.5 in)	44 years	27 of 100 (Routine)
19 January 1990	Windsor, US	daily rain	8.9 mm (0.35 in)	5.6 mm (0.22 in)	2 years	20 of 100 (Routine)
19 January 1990	Windsor, US	daily snow depth (Tie)	15.2 cm (6.0 in)	tie	4 years	1 of 100 (Routine)
18 December 1989	Windsor, US	daily snowfall	6.4 cm (2.5 in)	6.4 cm (2.5 in)	48 years	28 of 100 (Routine)
8 September 1989	Windsor, US	daily rain	12.7 mm (0.5 in)	3.8 mm (0.15 in)	48 years	20 of 100 (Routine)
13 August 1989	Windsor, US	daily rain	6.4 mm (0.25 in)	1.1 mm (0.04 in)	11 years	8 of 100 (Routine)
7 August 1989	Windsor, US	daily rain	7.6 mm (0.30 in)	1.8 mm (0.07 in)	26 years	13 of 100 (Routine)
29 July 1989	Windsor, US	daily rain	31.5 mm (1.2 in)	20.8 mm (0.8 in)	7 years	26 of 100 (Routine)

Extremes by Year

1941 to 1990

Yearly extremes at Windsor: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	1945	37.8 C (100.0 F)	9
Coldest night (TNn)	-36.7 C (-34.1 F)	1948	-26.1 C (-15.0 F)	9
Wettest day (Rx1day)	86.4 mm (3.4 in)	1975	36.5 mm (1.4 in)	50
Wettest five days (Rx5day)	111.0 mm (4.4 in)	1975	51.1 mm (2.0 in)	50
Longest dry spell (CDD)	90 days	1943	41 days	50

Hottest day (TXx)

The hottest day of the year at Windsor, 1941 to 1990. The record is 38.9 C (102.0 F) in 1945, marked on the chart; the median year is 37.8 C (100.0 F).

Hottest day (TXx) at Windsor by year
Year	Hottest day (TXx)
1941	37.2 C (99.0 F)
1942	37.2 C (99.0 F)
1943	38.3 C (100.9 F)
1944	37.8 C (100.0 F)
1945	38.9 C (102.0 F)
1946	38.3 C (100.9 F)
1947	37.8 C (100.0 F)
1948	36.7 C (98.1 F)
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	32.2 C (90.0 F)
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a

Coldest night (TNn)

The coldest night of the year at Windsor, 1941 to 1990. The record is -36.7 C (-34.1 F) in 1948, marked on the chart; the median year is -26.1 C (-15.0 F).

Coldest night (TNn) at Windsor by year
Year	Coldest night (TNn)
1941	-26.7 C (-16.1 F)
1942	-35.6 C (-32.1 F)
1943	-28.9 C (-20.0 F)
1944	-25.6 C (-14.1 F)
1945	-26.1 C (-15.0 F)
1946	-17.8 C (0.0 F)
1947	-21.1 C (-6.0 F)
1948	-36.7 C (-34.1 F)
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	-16.7 C (1.9 F)
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a

Wettest day (Rx1day)

The wettest day of the year at Windsor, 1941 to 1990. The record is 86.4 mm (3.4 in) in 1975, marked on the chart; the median year is 36.5 mm (1.4 in).

Wettest day (Rx1day) at Windsor by year
Year	Wettest day (Rx1day)
1941	28.4 mm (1.1 in)
1942	45.0 mm (1.8 in)
1943	24.1 mm (0.9 in)
1944	71.1 mm (2.8 in)
1945	24.9 mm (1.0 in)
1946	17.8 mm (0.7 in)
1947	68.6 mm (2.7 in)
1948	27.9 mm (1.1 in)
1949	71.1 mm (2.8 in)
1950	25.4 mm (1.0 in)
1951	59.4 mm (2.3 in)
1952	28.2 mm (1.1 in)
1953	18.8 mm (0.7 in)
1954	50.3 mm (2.0 in)
1955	18.3 mm (0.7 in)
1956	22.6 mm (0.9 in)
1957	36.8 mm (1.4 in)
1958	41.7 mm (1.6 in)
1959	20.3 mm (0.8 in)
1960	20.3 mm (0.8 in)
1961	43.2 mm (1.7 in)
1962	31.0 mm (1.2 in)
1963	55.6 mm (2.2 in)
1964	28.2 mm (1.1 in)
1965	36.1 mm (1.4 in)
1966	21.3 mm (0.8 in)
1967	30.2 mm (1.2 in)
1968	14.0 mm (0.6 in)
1969	26.9 mm (1.1 in)
1970	27.4 mm (1.1 in)
1971	29.5 mm (1.2 in)
1972	69.9 mm (2.8 in)
1973	39.4 mm (1.6 in)
1974	23.6 mm (0.9 in)
1975	86.4 mm (3.4 in)
1976	40.1 mm (1.6 in)
1977	67.6 mm (2.7 in)
1978	39.4 mm (1.6 in)
1979	42.4 mm (1.7 in)
1980	28.4 mm (1.1 in)
1981	50.8 mm (2.0 in)
1982	47.0 mm (1.9 in)
1983	48.3 mm (1.9 in)
1984	39.1 mm (1.5 in)
1985	41.4 mm (1.6 in)
1986	23.4 mm (0.9 in)
1987	20.6 mm (0.8 in)
1988	78.5 mm (3.1 in)
1989	59.4 mm (2.3 in)
1990	52.6 mm (2.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Windsor, 1941 to 1990. The record is 111.0 mm (4.4 in) in 1975, marked on the chart; the median year is 51.1 mm (2.0 in).

Wettest five days (Rx5day) at Windsor by year
Year	Wettest five days (Rx5day)
1941	29.4 mm (1.2 in)
1942	85.4 mm (3.4 in)
1943	44.2 mm (1.7 in)
1944	71.1 mm (2.8 in)
1945	45.7 mm (1.8 in)
1946	29.4 mm (1.2 in)
1947	76.2 mm (3.0 in)
1948	48.2 mm (1.9 in)
1949	75.7 mm (3.0 in)
1950	51.5 mm (2.0 in)
1951	64.0 mm (2.5 in)
1952	42.2 mm (1.7 in)
1953	38.3 mm (1.5 in)
1954	51.6 mm (2.0 in)
1955	29.2 mm (1.1 in)
1956	29.2 mm (1.1 in)
1957	50.6 mm (2.0 in)
1958	73.5 mm (2.9 in)
1959	39.2 mm (1.5 in)
1960	45.7 mm (1.8 in)
1961	71.2 mm (2.8 in)
1962	34.1 mm (1.3 in)
1963	67.8 mm (2.7 in)
1964	34.3 mm (1.4 in)
1965	61.5 mm (2.4 in)
1966	34.8 mm (1.4 in)
1967	47.2 mm (1.9 in)
1968	30.5 mm (1.2 in)
1969	64.5 mm (2.5 in)
1970	43.4 mm (1.7 in)
1971	66.6 mm (2.6 in)
1972	81.3 mm (3.2 in)
1973	45.0 mm (1.8 in)
1974	23.6 mm (0.9 in)
1975	111.0 mm (4.4 in)
1976	49.0 mm (1.9 in)
1977	79.3 mm (3.1 in)
1978	50.2 mm (2.0 in)
1979	52.8 mm (2.1 in)
1980	44.4 mm (1.7 in)
1981	55.1 mm (2.2 in)
1982	63.8 mm (2.5 in)
1983	60.5 mm (2.4 in)
1984	55.9 mm (2.2 in)
1985	67.8 mm (2.7 in)
1986	28.7 mm (1.1 in)
1987	36.6 mm (1.4 in)
1988	79.5 mm (3.1 in)
1989	69.9 mm (2.8 in)
1990	64.3 mm (2.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Windsor, 1941 to 1990. The record is 90 days in 1943, marked on the chart; the median year is 41 days.

Longest dry spell (CDD) at Windsor by year
Year	Longest dry spell (CDD)
1941	32 days
1942	33 days
1943	90 days
1944	36 days
1945	54 days
1946	36 days
1947	25 days
1948	39 days
1949	41 days
1950	41 days
1951	33 days
1952	49 days
1953	63 days
1954	70 days
1955	28 days
1956	68 days
1957	44 days
1958	31 days
1959	61 days
1960	41 days
1961	50 days
1962	40 days
1963	27 days
1964	65 days
1965	54 days
1966	39 days
1967	34 days
1968	51 days
1969	48 days
1970	35 days
1971	44 days
1972	43 days
1973	29 days
1974	36 days
1975	47 days
1976	29 days
1977	72 days
1978	55 days
1979	24 days
1980	38 days
1981	46 days
1982	37 days
1983	46 days
1984	37 days
1985	73 days
1986	31 days
1987	28 days
1988	33 days
1989	43 days
1990	23 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

43 years, 1942 to 1989

A day with at least 34.9 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 108.4 mm (4.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Windsor: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	34.9 mm (1.4 in)
5 years	51.3 mm (2.0 in)
10 years	63.4 mm (2.5 in)
25 years	80.1 mm (3.2 in)
50 years	93.8 mm (3.7 in)	Longer than the 43 years of record
100 years	108.4 mm (4.3 in)	Longer than the 43 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 43 years of values from 1942 to 1989.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 86.4 mm (3.4 in) in 1975; 78.5 mm (3.1 in) in 1988; 71.1 mm (2.8 in) in 1944.

Download the Data

Data for Windsor standing records by year: CSV or JSON. Field meanings are on the data page.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

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

Year	Days with data	Share of year	Complete
1941	183	50%	No
1942	356	98%	Yes
1943	362	99%	Yes
1944	365	100%	Yes
1945	365	100%	Yes
1946	363	99%	Yes
1947	330	90%	Yes
1948	207	57%	No
1970	77	21%	No