United States · 1991–2020

Best time to visit
Campbells Station.

September leads for comfortable weather in Campbells Station: typically 23.5°C by day, 12.4°C at night, with 94 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23.5°C

Typical low12.4°C

Rain in September94 mm

Comfort

September

September · June · August

82climate match

Beach

July

July · August · June

73climate match

Outdoors

May

May · September · October

76climate match

The weakest month is January, scoring 5 against September’s 82 — days reach only 2.8°C, 21° 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

52.8° / -6.9°

Feb

54.4° / -6°

Mar

58.7° / -2.3°

Apr

3315.3° / 3.1°

May

6521.1° / 8.7°

Jun

7725.6° / 14°

Jul

6828.7° / 17.4°

Aug

7127.7° / 16.6°

Sep

8223.5° / 12.4°

Oct

4317.1° / 6°

Nov

1710.9° / 0.9°

Dec

55.5° / -3.7°

Monthly climate evidence for Campbells Station — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 44 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	2.8°C	-6.9°C	100 mm	9.3	4.9°C	9 h 25	5	Strong coverage
February	4.4°C	-6°C	85 mm	8.1	3.3°C	10 h 30	5	Strong coverage
March	8.7°C	-2.3°C	121 mm	9.6	3.5°C	11 h 48	5	Strong coverage
April	15.3°C	3.1°C	113 mm	9.4	5.8°C	13 h 18	33	Strong coverage
May	21.1°C	8.7°C	91 mm	10.1	10.1°C	14 h 33	65	Strong coverage
June	25.6°C	14°C	108 mm	8.9	14.7°C	15 h 14	77	Strong coverage
July	28.7°C	17.4°C	91 mm	8.3	18.2°C	14 h 58	68	Strong coverage
August	27.7°C	16.6°C	100 mm	8.3	18.8°C	13 h 53	71	Strong coverage
September	23.5°C	12.4°C	94 mm	7.3	17.0°C	12 h 26	82	Strong coverage
October	17.1°C	6°C	126 mm	8.9	13.5°C	11 h	43	Strong coverage
November	10.9°C	0.9°C	104 mm	8.6	10.2°C	9 h 44	17	Strong coverage
December	5.5°C	-3.7°C	124 mm	9.7	7.5°C	9 h 07	5	Strong coverage

What has changed

Campbells Station runs +1.2°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

+1.3

Feb

+1.3

Mar

+0.7

Apr

+0.9

May

+0.7

Jun

+0.9

Jul

+1.2

Aug

+1.4

Sep

+1.8

Oct

+1.6

Nov

+0.5

Dec

+1.6

September daytime highs, 2011–2025. Last recorded: 24.8°C.

Records at WALPOLE 2, 1972–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.7°C12 Jan 2020	-28.3°C22 Jan 1984	86 mm10 Jan 2024	299 mm1979 · driest 20 mm in 1981	53
February	22.2°C21 Feb 2018	-26.7°C5 Feb 1996	66 mm7 Feb 1978	208 mm2008 · driest 13 mm in 1987	53
March	32.2°C31 Mar 1998	-20.0°C10 Mar 1984	96 mm14 Mar 2010	425 mm2010 · driest 9 mm in 2006	53
April	35.6°C19 Apr 1976	-10.0°C7 Apr 1982	80 mm23 Apr 2012	299 mm1987 · driest 28 mm in 1999	52
May	35.6°C18 May 2017	-2.2°C1 May 2008	79 mm23 May 2025	212 mm2025 · driest 16 mm in 2015	53
June	38.3°C24 Jun 2025	2.8°C3 Jun 1986	178 mm14 Jun 1998	330 mm1998 · driest 5 mm in 1999	54
July	38.9°C22 Jul 2011	5.6°C1 Jul 1988	78 mm1 Jul 2001	273 mm1988 · driest 19 mm in 1983	54
August	38.9°C2 Aug 1975	3.9°C30 Aug 1986	102 mm12 Aug 1990	254 mm2011 · driest 9 mm in 1981	53
September	36.7°C8 Sep 2015	-1.1°C29 Sep 2000	113 mm2 Sep 2021	265 mm2018 · driest 8 mm in 2014	53
October	30.6°C5 Oct 2007	-8.3°C31 Oct 2020	144 mm15 Oct 2005	359 mm2005 · driest 9 mm in 1994	53
November	27.2°C6 Nov 2024	-15.6°C24 Nov 1989	73 mm9 Nov 1977	252 mm2018 · driest 18 mm in 1976	54
December	24.4°C7 Dec 1998	-25.6°C26 Dec 1980	99 mm1 Dec 2020	267 mm2020 · driest 22 mm in 1980	53

Typical days per month at WALPOLE 2, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	27	3	7
February	0	0	25	3	7
March	<1	<1	22	4	5
April	2	<1	9	4	1
May	8	2	<1	3	0
June	18	6	0	3	0
July	27	12	0	3	0
August	25	9	0	3	0
September	12	2	<1	3	0
October	2	0	4	3	<1
November	<1	0	15	3	1
December	0	0	24	4	5

The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 86); on 2011–2025 it is September (88). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in WALPOLE 2’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%	34%	-0.7–5.4°C
February	<1%	27%	11%	31%	1.2–7.3°C
March	4%	30%	12%	37%	6.4–11.4°C
April	18%	31%	12%	40%	13.0–17.2°C
May	47%	32%	9%	40%	18.9–23.1°C
June	67%	30%	10%	34%	23.8–27.3°C
July	73%	27%	11%	25%	26.6–30.1°C
August	73%	27%	11%	28%	25.9–29.2°C
September	62%	25%	10%	27%	21.6–24.8°C
October	23%	27%	11%	30%	15.0–19.0°C
November	5%	29%	11%	34%	8.4–13.9°C
December	<1%	31%	13%	37%	2.7–7.8°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.

1974Each stripe is one year’s mean temperature against the 51-year average. Warmest: 2012. Coolest: 1978.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4932174
NOAA station: USC00198757 · WALPOLE 2
Station distance: 5.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 42.13°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 44 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
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 WALPOLE 2 is what differs

Norfolk→Medfield→Walpole→Sharon→Cedar→Cedar Hill→

Or put two places side by side: Campbells Station vs Norfolk

Best time to visitCampbells Station.

September

July

May

The whole year,without the guesswork.

Campbells Station runs +1.2°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Campbells Station.

The whole year,
without the guesswork.

Campbells Station runs +1.2°C
on the 1961–1990 baseline.

Nearby, measured,
and named.