United States · 1991–2020

Best time to visit
Hanover.

September leads for comfortable weather in Hanover: typically 26.3°C by day, 14°C at night, with 90 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.3°C

Typical low14°C

Rain in September90 mm

Comfort

September

September · May · June

80climate match

Beach

August

August · July · June

74climate match

Outdoors

October

October · April · September

81climate match

The weakest month is January, scoring 5 against September’s 80 — days reach only 4.6°C, 19° 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

54.6° / -4.1°

Feb

57.1° / -3.4°

Mar

2112.7° / 1.2°

Apr

5019.3° / 6.4°

May

7123.7° / 11.9°

Jun

6428.1° / 16.8°

Jul

5530° / 19.1°

Aug

6129.9° / 18.5°

Sep

8026.3° / 14°

Oct

6220.1° / 7.8°

Nov

2913.1° / 2.4°

Dec

56.4° / -2.4°

Monthly climate evidence for Hanover — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	4.6°C	-4.1°C	89 mm	7.9	9 h 44	5	Good coverage
February	7.1°C	-3.4°C	83 mm	7.4	10 h 41	5	Good coverage
March	12.7°C	1.2°C	112 mm	9.2	11 h 50	21	Good coverage
April	19.3°C	6.4°C	128 mm	10.2	13 h 09	50	Good coverage
May	23.7°C	11.9°C	140 mm	11.7	14 h 16	71	Good coverage
June	28.1°C	16.8°C	130 mm	9.7	14 h 51	64	Good coverage
July	30°C	19.1°C	121 mm	8.9	14 h 37	55	Good coverage
August	29.9°C	18.5°C	106 mm	6.7	13 h 40	61	Good coverage
September	26.3°C	14°C	90 mm	6.3	12 h 23	80	Good coverage
October	20.1°C	7.8°C	93 mm	7	11 h 07	62	Good coverage
November	13.1°C	2.4°C	91 mm	8.2	10 h 01	29	Good coverage
December	6.4°C	-2.4°C	109 mm	9.1	9 h 28	5	Good coverage

Records at MADISON SEWAGE PLT, 1893–2011
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	26.7°C24 Jan 1943	-27.2°C21 Jan 1918	104 mm7 Jan 1895	453 mm1937 · driest 13 mm in 1981	115
February	27.2°C10 Feb 1932	-28.9°C13 Feb 1899	85 mm22 Feb 1897	217 mm1962 · driest 6 mm in 1978	115
March	32.8°C25 Mar 1929	-18.9°C2 Mar 1980	79 mm1 Mar 1997	346 mm2008 · driest 14 mm in 1910	116
April	35.0°C23 Apr 1925	-13.9°C5 Apr 2007	77 mm21 Apr 2002	267 mm2011 · driest 7 mm in 1896	116
May	38.9°C28 May 1911	-2.8°C1 May 1963	104 mm8 May 1927	295 mm1995 · driest 24 mm in 1930	115
June	41.7°C28 Jun 1944	2.8°C1 Jun 1966	102 mm23 Jun 1960	267 mm1928 · driest 5 mm in 1936	116
July	43.3°C15 Jul 1936	8.9°C2 Jul 1930	93 mm4 Jul 1984	238 mm1909 · driest 17 mm in 1904	117
August	42.2°C19 Aug 1936	6.1°C29 Aug 1986	126 mm8 Aug 1992	248 mm1944 · driest 2 mm in 1943	117
September	42.2°C3 Sep 1953	-1.1°C30 Sep 1899	131 mm27 Sep 2002	232 mm1906 · driest 6 mm in 1998	115
October	37.8°C8 Oct 1939	-8.3°C29 Oct 1925	127 mm18 Oct 2004	312 mm1983 · driest 2 mm in 1924	114
November	31.1°C1 Nov 1950	-17.8°C25 Nov 1950	80 mm25 Nov 2010	201 mm2010 · driest 13 mm in 1904	114
December	25.0°C2 Dec 1982	-27.8°C22 Dec 1989	81 mm15 Dec 1948	201 mm1990 · driest 13 mm in 1976	113

Typical days per month at MADISON SEWAGE PLT, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	23	3	3
February	0	0	20	3	2
March	<1	0	13	4	<1
April	5	<1	3	4	<1
May	13	2	0	5	0
June	25	11	0	4	0
July	28	16	0	4	0
August	27	15	0	4	0
September	19	7	0	3	0
October	6	<1	<1	3	<1
November	<1	0	10	3	0
December	0	0	20	3	2

How often, not how much — every day in MADISON SEWAGE PLT’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%	29%	11%	32%	2.3–9.3°C
February	2%	29%	9%	31%	3.4–11.1°C
March	15%	33%	14%	40%	9.7–17.4°C
April	37%	35%	13%	44%	17.2–23.2°C
May	58%	35%	13%	45%	22.3–28.3°C
June	69%	31%	13%	35%	27.2–32.0°C
July	74%	27%	12%	28%	29.0–34.1°C
August	77%	24%	10%	22%	28.5–33.2°C
September	76%	22%	9%	20%	25.0–30.6°C
October	54%	21%	8%	21%	18.7–24.2°C
November	13%	27%	11%	29%	10.5–16.0°C
December	<1%	29%	11%	33%	3.6–10.2°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.

1894Each stripe is one year’s mean temperature against the 101-year average. Warmest: 1939. Coolest: 1997.2010

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4258510
NOAA station: USC00125237 · MADISON SEWAGE PLT
Station distance: 7.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 19 usable years
Daylight: Calculated from latitude 38.71°, 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 MADISON SEWAGE PLT is what differs

North Madison→Madison→Bedford→Milton→New Washington→Canaan→

Or put two places side by side: Hanover vs North Madison

Best time to visitHanover.