United States · 1991–2020

Best time to visit
Manchester.

September leads for comfortable weather in Manchester: typically 25.2°C by day, 14.7°C at night, with 126 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.2°C

Typical low14.7°C

Rain in September126 mm

Comfort

September

September · May · June

79climate match

Beach

August

August · July · June

77climate match

Outdoors

October

October · May · April

76climate match

The weakest month is January, scoring 5 against September’s 79 — days reach only 3.5°C, 20° 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

53.5° / -5°

Feb

55.3° / -4.1°

Mar

1610.5° / 0.2°

Apr

4917.5° / 5.8°

May

7522.9° / 11.7°

Jun

6927.8° / 17.1°

Jul

5330.3° / 19.8°

Aug

6329.1° / 18.8°

Sep

7925.2° / 14.7°

Oct

5618.6° / 7.8°

Nov

2812° / 2.1°

Dec

56.1° / -2.1°

Monthly climate evidence for Manchester — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3.5°C	-5°C	77 mm	8.3	9 h 37	5	Strong coverage
February	5.3°C	-4.1°C	67 mm	7.9	10 h 37	5	Strong coverage
March	10.5°C	0.2°C	94 mm	8.3	11 h 49	16	Strong coverage
April	17.5°C	5.8°C	91 mm	9.2	13 h 12	49	Strong coverage
May	22.9°C	11.7°C	97 mm	10.4	14 h 22	75	Strong coverage
June	27.8°C	17.1°C	104 mm	9.1	15 h 00	69	Strong coverage
July	30.3°C	19.8°C	122 mm	8.9	14 h 45	53	Strong coverage
August	29.1°C	18.8°C	96 mm	8.2	13 h 45	63	Strong coverage
September	25.2°C	14.7°C	126 mm	7.3	12 h 24	79	Strong coverage
October	18.6°C	7.8°C	97 mm	7.5	11 h 04	56	Strong coverage
November	12°C	2.1°C	75 mm	6.7	9 h 54	28	Strong coverage
December	6.1°C	-2.1°C	87 mm	8.4	9 h 20	5	Strong coverage

Records at MIDDLETOWN HARRISBURG INTL AP, 1941–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.9°C26 Jan 1950	-30.0°C21 Jan 1994	63 mm23 Jan 2016	151 mm1949 · driest 21 mm in 1955	61
February	26.1°C21 Feb 2018	-21.1°C2 Feb 1961	60 mm1 Feb 2008	147 mm2008 · driest 10 mm in 2002	61
March	30.6°C30 Mar 1998	-18.2°C7 Mar 2015	67 mm21 Mar 2000	161 mm1993 · driest 17 mm in 2006	60
April	33.9°C25 Apr 1960	-4.4°C14 Apr 1950	88 mm16 Apr 2011	240 mm2011 · driest 21 mm in 1946	60
May	35.6°C19 May 1962	-1.0°C10 May 2020	71 mm21 May 1947	255 mm2025 · driest 5 mm in 2023	60
June	38.3°C26 Jun 1952	5.0°C1 Jun 1945	100 mm25 Jun 2006	219 mm1946 · driest 5 mm in 1954	60
July	39.4°C3 Jul 2026	7.8°C7 Jul 1942	120 mm23 Jul 2017	307 mm2018 · driest 0 mm in 1955	60
August	38.9°C5 Aug 1955	6.7°C27 Aug 1944	70 mm14 Aug 2012	220 mm2011 · driest 14 mm in 1995	59
September	38.9°C1 Sep 1943	0.0°C28 Sep 1947	196 mm7 Sep 2011	468 mm2011 · driest 16 mm in 1959	59
October	33.9°C2 Oct 2019	-3.3°C26 Oct 1952	145 mm11 Oct 2013	281 mm2013 · driest 0 mm in 1963	60
November	27.8°C1 Nov 1950	-9.4°C29 Nov 1955	78 mm8 Nov 1943	218 mm2018 · driest 22 mm in 1946	60
December	23.9°C7 Dec 1998	-22.8°C23 Dec 1960	59 mm13 Dec 1996	174 mm2008 · driest 8 mm in 1998	60

Typical days per month at MIDDLETOWN HARRISBURG INTL AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	3	5
February	<1	0	23	2	5
March	<1	0	16	3	3
April	3	<1	3	3	<1
May	12	4	0	3	0
June	24	10	0	4	0
July	30	18	0	4	0
August	29	13	0	3	0
September	16	5	0	3	0
October	4	<1	<1	3	0
November	<1	0	11	3	<1
December	0	0	22	3	3

How often, not how much — every day in MIDDLETOWN HARRISBURG INTL AP’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%	27%	8%	30%	0.1–6.8°C
February	<1%	27%	8%	32%	1.9–8.4°C
March	7%	29%	10%	34%	7.6–14.0°C
April	26%	30%	10%	39%	14.8–19.7°C
May	53%	33%	11%	41%	21.2–25.0°C
June	70%	29%	12%	34%	26.3–29.4°C
July	73%	27%	11%	30%	28.1–31.8°C
August	75%	25%	9%	27%	27.2–30.5°C
September	69%	23%	10%	21%	23.0–27.0°C
October	35%	23%	8%	24%	16.8–21.1°C
November	7%	23%	9%	22%	9.3–14.3°C
December	<1%	26%	9%	28%	1.6–8.7°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.

1941Each stripe is one year’s mean temperature against the 58-year average. Warmest: 2024. Coolest: 1963.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5199634
NOAA station: USW00014711 · MIDDLETOWN HARRISBURG INTL AP
Station distance: 15.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 40.06°, 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 MIDDLETOWN HARRISBURG INTL AP is what differs

Hershey→Elizabethtown→Middletown→Hummelstown→Rutherford→Valley Green→

Or put two places side by side: Manchester vs Hershey

Best time to visitManchester.