United States · 1991–2020

Best time to visit
Plymouth.

June leads for comfortable weather in Plymouth: typically 25.3°C by day, 13.8°C at night, with 101 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high25.3°C

Typical low13.8°C

Rain in June101 mm

Comfort

June

June · September · August

79climate match

Beach

July

July · August · June

72climate match

Outdoors

May

May · September · October

78climate match

The weakest month is January, scoring 5 against June’s 79 — days reach only 4.3°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

54.3° / -6.6°

Feb

55.2° / -5.8°

Mar

59° / -2.5°

Apr

3214.7° / 2.9°

May

6120.2° / 8.2°

Jun

7925.3° / 13.8°

Jul

6928.1° / 17.5°

Aug

7327.3° / 16.6°

Sep

7923.4° / 12.8°

Oct

4717.8° / 6.7°

Nov

2012.1° / 1.6°

Dec

57.1° / -3.1°

Monthly climate evidence for Plymouth — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 19 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	4.3°C	-6.6°C	118 mm	10	4.9°C	9 h 26	5	Strong coverage
February	5.2°C	-5.8°C	106 mm	9	3.4°C	10 h 31	5	Good coverage
March	9°C	-2.5°C	150 mm	9.9	3.5°C	11 h 48	5	Strong coverage
April	14.7°C	2.9°C	112 mm	8.4	5.8°C	13 h 17	32	Strong coverage
May	20.2°C	8.2°C	95 mm	9.7	10.1°C	14 h 32	61	Strong coverage
June	25.3°C	13.8°C	101 mm	8.8	14.7°C	15 h 13	79	Good coverage
July	28.1°C	17.5°C	95 mm	7.9	18.4°C	14 h 57	69	Good coverage
August	27.3°C	16.6°C	98 mm	7.6	19.0°C	13 h 52	73	Good coverage
September	23.4°C	12.8°C	114 mm	7.3	17.2°C	12 h 26	79	Good coverage
October	17.8°C	6.7°C	120 mm	9.1	13.7°C	11 h	47	Good coverage
November	12.1°C	1.6°C	115 mm	9.4	10.3°C	9 h 45	20	Good coverage
December	7.1°C	-3.1°C	122 mm	9.9	7.5°C	9 h 08	5	Good coverage

Records at PLYMOUTH-KINGSTON, 1905–2015
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.1°C29 Jan 2002	-28.3°C23 Jan 1970	98 mm27 Jan 1986	276 mm1978 · driest 19 mm in 1955	110
February	21.7°C26 Feb 1957	-26.1°C12 Feb 1979	87 mm25 Feb 1969	242 mm1969 · driest 30 mm in 1961	109
March	30.6°C29 Mar 1945	-20.6°C19 Mar 1967	105 mm18 Mar 1968	364 mm2010 · driest 2 mm in 1915	109
April	34.4°C17 Apr 2002	-10.6°C1 Apr 1969	99 mm22 Apr 2000	313 mm1987 · driest 24 mm in 1963	107
May	35.0°C23 May 1964	-3.9°C9 May 1985	126 mm26 May 1967	284 mm2006 · driest 6 mm in 1944	108
June	38.9°C26 Jun 1952	0.6°C2 Jun 1945	144 mm10 Jun 1931	301 mm2006 · driest 1 mm in 1949	106
July	38.9°C4 Jul 1949	5.6°C21 Jul 1974	105 mm23 Jul 1916	231 mm2009 · driest 2 mm in 1952	105
August	38.9°C10 Aug 1949	4.4°C31 Aug 1965	131 mm19 Aug 1955	347 mm1955 · driest 6 mm in 1993	106
September	37.8°C2 Sep 1953	0.0°C28 Sep 1989	208 mm17 Sep 1933	383 mm1933 · driest 9 mm in 1957	107
October	30.6°C1 Oct 1927	-8.3°C31 Oct 1966	114 mm15 Oct 2005	304 mm2005 · driest 2 mm in 1950	107
November	27.8°C2 Nov 1950	-16.1°C25 Nov 1989	118 mm18 Nov 1935	253 mm1969 · driest 15 mm in 1917	108
December	25.0°C7 Dec 1998	-25.6°C20 Dec 1942	93 mm27 Dec 1969	268 mm1969 · driest 24 mm in 1955	109

Typical days per month at PLYMOUTH-KINGSTON, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	28	4	5
February	0	0	24	4	4
March	<1	0	22	5	3
April	1	<1	6	4	<1
May	6	2	<1	3	0
June	16	6	0	3	0
July	25	11	0	3	0
August	23	8	0	3	0
September	10	1	0	3	0
October	2	<1	2	3	0
November	0	0	13	4	<1
December	0	0	24	4	2

How often, not how much — every day in PLYMOUTH-KINGSTON’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%	28%	12%	30%	0.6–6.8°C
February	<1%	28%	12%	29%	0.8–7.3°C
March	3%	29%	13%	29%	5.1–10.5°C
April	11%	28%	12%	30%	11.2–15.7°C
May	36%	28%	10%	31%	16.7–21.8°C
June	62%	27%	9%	27%	21.8–26.5°C
July	74%	24%	9%	21%	24.5–29.2°C
August	72%	24%	10%	21%	23.2–28.1°C
September	56%	23%	9%	20%	20.0–24.6°C
October	23%	23%	10%	23%	15.0–19.2°C
November	4%	28%	12%	29%	9.0–14.2°C
December	<1%	28%	12%	31%	2.4–8.7°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.

1906Each stripe is one year’s mean temperature against the 96-year average. Warmest: 2010. Coolest: 1917.2014

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4947597
NOAA station: USC00196486 · PLYMOUTH-KINGSTON
Station distance: 3.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 23 usable years
Daylight: Calculated from latitude 41.96°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 19 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 PLYMOUTH-KINGSTON is what differs

Duxbury→Kingston→Ocean Bluff-Brant Rock→Marshfield→North Plymouth→South Duxbury→

Or put two places side by side: Plymouth vs Duxbury

Best time to visitPlymouth.

June

July

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Plymouth.

The whole year,
without the guesswork.

Nearby, measured,
and named.