United States · 1991–2020

Best time to visit
Washington.

September leads for comfortable weather in Washington: typically 23.9°C by day, 12.1°C at night, with 129 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23.9°C

Typical low12.1°C

Rain in September129 mm

Comfort

September

September · June · May

77climate match

Beach

July

July · August · June

66climate match

Outdoors

May

May · September · October

71climate match

The weakest month is January, scoring 5 against September’s 77 — days reach only 2.3°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

52.3° / -6.8°

Feb

54.3° / -6°

Mar

58.9° / -2.3°

Apr

3816.2° / 3.6°

May

6722.2° / 9°

Jun

6927° / 14.4°

Jul

5829.8° / 17.5°

Aug

6628.3° / 16.6°

Sep

7723.9° / 12.1°

Oct

4417.3° / 5.7°

Nov

1510.7° / 0.5°

Dec

54.7° / -3.9°

Monthly climate evidence for Washington — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2.3°C	-6.8°C	98 mm	9.3	9 h 28	5	Strong coverage
February	4.3°C	-6°C	85 mm	8.5	10 h 32	5	Strong coverage
March	8.9°C	-2.3°C	117 mm	9.9	11 h 48	5	Strong coverage
April	16.2°C	3.6°C	107 mm	9.6	13 h 16	38	Strong coverage
May	22.2°C	9°C	107 mm	10.3	14 h 30	67	Strong coverage
June	27°C	14.4°C	127 mm	10.6	15 h 11	69	Strong coverage
July	29.8°C	17.5°C	126 mm	8.6	14 h 55	58	Strong coverage
August	28.3°C	16.6°C	115 mm	8.7	13 h 51	66	Strong coverage
September	23.9°C	12.1°C	129 mm	7.8	12 h 25	77	Strong coverage
October	17.3°C	5.7°C	125 mm	8	11 h 01	44	Strong coverage
November	10.7°C	0.5°C	106 mm	8.1	9 h 47	15	Strong coverage
December	4.7°C	-3.9°C	113 mm	9.1	9 h 10	5	Strong coverage

What has changed

Washington runs +1.0°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

+1.4

Feb

+1.8

Mar

+0.8

Apr

+0.8

May

+0.4

Jun

+0.6

Jul

+1.4

Aug

+0.7

Sep

+1.0

Oct

+1.0

Nov

+0.6

Dec

+1.5

September daytime highs, 2011–2025. Last recorded: 24.7°C.

Records at DANBURY, 1937–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.7°C26 Jan 1950	-27.8°C27 Jan 1994	104 mm25 Jan 1938	288 mm1979 · driest 5 mm in 1970	77
February	25.6°C21 Feb 2018	-26.7°C16 Feb 1943	83 mm2 Feb 1973	213 mm1981 · driest 24 mm in 1980	80
March	33.3°C31 Mar 1998	-22.8°C19 Mar 1967	93 mm6 Mar 2011	287 mm1983 · driest 13 mm in 1981	81
April	35.0°C17 Apr 2002	-10.0°C7 Apr 1982	88 mm5 Apr 1984	297 mm1983 · driest 17 mm in 2010	79
May	36.1°C19 May 1986	-3.9°C10 May 1947	92 mm19 May 1999	322 mm1984 · driest 17 mm in 1986	79
June	37.2°C24 Jun 2025	1.7°C1 Jun 1938	113 mm17 Jun 2001	296 mm1972 · driest 13 mm in 1966	77
July	41.1°C15 Jul 1995	3.3°C1 Jul 1943	148 mm16 Jul 1992	287 mm1938 · driest 23 mm in 1966	81
August	40.0°C26 Aug 1943	2.8°C14 Aug 1941	197 mm18 Aug 2024	415 mm1955 · driest 11 mm in 1981	76
September	37.8°C2 Sep 1953	-5.0°C30 Sep 1941	243 mm16 Sep 1999	381 mm1999 · driest 7 mm in 1941	76
October	32.8°C10 Oct 1939	-8.9°C10 Oct 1943	155 mm16 Oct 1955	448 mm1955 · driest 2 mm in 2024	81
November	27.8°C2 Nov 1950	-17.8°C26 Nov 1938	102 mm23 Nov 1992	226 mm2018 · driest 4 mm in 2009	79
December	24.4°C7 Dec 1998	-23.9°C26 Dec 1980	105 mm13 Dec 1983	259 mm1973 · driest 9 mm in 1980	80

Typical days per month at DANBURY, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	3	8
February	0	0	24	3	6
March	<1	<1	21	4	5
April	3	<1	7	4	1
May	9	4	<1	3	0
June	21	8	0	4	0
July	29	17	0	4	0
August	26	11	0	4	0
September	14	2	0	4	0
October	2	<1	4	3	<1
November	<1	0	15	3	1
December	0	0	25	4	5

The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 81); on 2011–2025 it is September (82). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in DANBURY’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	0%	29%	10%	34%	-0.9–4.7°C
February	<1%	29%	10%	32%	0.8–7.0°C
March	3%	30%	11%	36%	5.9–11.4°C
April	19%	32%	12%	42%	13.0–17.8°C
May	49%	33%	12%	44%	19.4–24.2°C
June	67%	31%	11%	37%	24.6–28.1°C
July	72%	28%	12%	31%	27.3–31.2°C
August	73%	27%	11%	27%	26.3–29.6°C
September	62%	25%	11%	27%	21.8–25.4°C
October	29%	23%	10%	23%	15.8–19.8°C
November	4%	29%	12%	32%	8.0–13.1°C
December	<1%	29%	12%	34%	1.4–7.5°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.

1938Each stripe is one year’s mean temperature against the 60-year average. Warmest: 2016. Coolest: 1996.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4845151
NOAA station: USC00061762 · DANBURY
Station distance: 27.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 25 usable years
Daylight: Calculated from latitude 41.63°, 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 DANBURY is what differs

Danbury→Southbury→New Fairfield→Woodbury→Bethel→New Milford→

Or put two places side by side: Washington vs Danbury

Best time to visitWashington.

September

July

May

The whole year,without the guesswork.

Washington runs +1.0°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Washington.

The whole year,
without the guesswork.

Washington runs +1.0°C
on the 1961–1990 baseline.

Nearby, measured,
and named.