United States · 1991–2020

Best time to visit
Windsor.

September leads for comfortable weather in Windsor: typically 26.5°C by day, 13.4°C at night, with 76 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.5°C

Typical low13.4°C

Rain in September76 mm

Comfort

September

September · May · August

80climate match

Beach

August

August · July · June

78climate match

Outdoors

October

October · April · September

81climate match

The weakest month is January, scoring 5 against September’s 80 — days reach only 2.2°C, 22° below the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

52.2° / -6.5°

Feb

55° / -4.6°

Mar

2111.2° / 0.4°

Apr

4918.4° / 6°

May

7724° / 12.4°

Jun

6428.5° / 17.1°

Jul

6130.1° / 18.8°

Aug

6929.4° / 17.4°

Sep

8026.5° / 13.4°

Oct

6119.7° / 7.3°

Nov

1911° / 1°

Dec

54.7° / -3.5°

Monthly climate evidence for Windsor — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2.2°C	-6.5°C	62 mm	6.6	9 h 40	5	Strong coverage
February	5°C	-4.6°C	51 mm	5.7	10 h 39	5	Strong coverage
March	11.2°C	0.4°C	77 mm	7.7	11 h 49	21	Strong coverage
April	18.4°C	6°C	114 mm	9.5	13 h 11	49	Strong coverage
May	24°C	12.4°C	115 mm	10.9	14 h 19	77	Strong coverage
June	28.5°C	17.1°C	120 mm	8.9	14 h 56	64	Strong coverage
July	30.1°C	18.8°C	95 mm	7	14 h 41	61	Strong coverage
August	29.4°C	17.4°C	76 mm	6.5	13 h 43	69	Strong coverage
September	26.5°C	13.4°C	76 mm	6	12 h 24	80	Strong coverage
October	19.7°C	7.3°C	88 mm	6.9	11 h 06	61	Strong coverage
November	11°C	1°C	94 mm	7.8	9 h 57	19	Strong coverage
December	4.7°C	-3.5°C	58 mm	6.6	9 h 24	5	Strong coverage

What has changed

Windsor runs -0.4°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+0.4

Feb

0.0

Mar

0.0

Apr

-1.3

May

-0.8

Jun

-0.7

Jul

-1.3

Aug

-1.3

Sep

-0.2

Oct

-0.3

Nov

-1.0

Dec

+1.4

September daytime highs, 2011–2025. Last recorded: 28.5°C.

Records at WINDSOR, 1904–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.3°C23 Jan 1909	-32.2°C24 Jan 1915	79 mm3 Jan 1950	281 mm1950 · driest 0 mm in 1944	121
February	23.9°C29 Feb 1972	-31.1°C18 Feb 1910	66 mm11 Feb 2009	136 mm1950 · driest 4 mm in 2024	119
March	31.7°C23 Mar 1910	-21.7°C5 Mar 1960	104 mm14 Mar 1922	247 mm1938 · driest 11 mm in 1910	121
April	32.2°C11 Apr 1930	-7.2°C7 Apr 1982	87 mm19 Apr 2013	238 mm1994 · driest 11 mm in 1971	122
May	36.1°C30 May 1913	-2.8°C25 May 1925	104 mm4 May 1908	337 mm1908 · driest 9 mm in 1914	122
June	40.6°C26 Jun 1954	1.7°C16 Jun 1917	140 mm27 Jun 1957	394 mm1957 · driest 16 mm in 1988	120
July	43.9°C14 Jul 1936	6.1°C2 Jul 1904	117 mm10 Jul 1971	254 mm1958 · driest 5 mm in 2012	121
August	41.7°C5 Aug 1918	2.8°C31 Aug 1915	92 mm20 Aug 1915	254 mm1939 · driest 2 mm in 1971	121
September	41.1°C5 Sep 1954	-3.3°C28 Sep 1942	117 mm3 Sep 2010	375 mm1911 · driest 3 mm in 2004	121
October	35.0°C4 Oct 1922	-8.9°C29 Oct 1925	121 mm27 Oct 1919	264 mm1941 · driest 3 mm in 1908	121
November	28.9°C28 Nov 1965	-21.1°C25 Nov 1950	109 mm27 Nov 1910	276 mm1992 · driest 1 mm in 1917	120
December	22.2°C15 Dec 1948	-28.9°C22 Dec 1989	114 mm7 Dec 1966	213 mm2015 · driest 3 mm in 1976	120

Typical days per month at WINDSOR, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	2	3
February	0	0	22	2	2
March	1	0	16	3	<1
April	5	<1	4	4	<1
May	15	3	0	4	<1
June	26	13	0	4	0
July	29	17	0	3	0
August	28	15	0	2	0
September	20	7	0	2	0
October	7	<1	2	3	0
November	<1	0	14	3	<1
December	0	0	23	2	2

The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 84); on 2011–2025 it is September (86). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in WINDSOR’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	<1%	21%	6%	19%	-1.1–6.0°C
February	1%	21%	7%	21%	0.5–8.9°C
March	11%	27%	10%	31%	7.2–15.1°C
April	30%	31%	12%	39%	15.3–20.9°C
May	56%	31%	13%	38%	21.5–26.9°C
June	71%	28%	12%	30%	26.7–31.3°C
July	76%	24%	10%	23%	28.8–33.5°C
August	78%	22%	9%	20%	27.8–32.3°C
September	74%	21%	9%	19%	24.5–29.0°C
October	46%	21%	9%	23%	17.7–22.6°C
November	9%	24%	9%	24%	8.4–14.0°C
December	<1%	23%	8%	23%	0.8–7.9°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1904Each stripe is one year’s mean temperature against the 113-year average. Warmest: 1998. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4253280
NOAA station: USC00119354 · WINDSOR
Station distance: 0.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 39.44°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from WINDSOR is what differs

Gays→

Or put two places side by side: Windsor vs Gays

Best time to visitWindsor.

September

August

October

The whole year,without the guesswork.

Windsor runs -0.4°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Windsor.

The whole year,
without the guesswork.

Windsor runs -0.4°C
on the 1961–1990 baseline.

Nearby, measured,
and named.