United States · 1991–2020

Best time to visit
Preston.

May leads for comfortable weather in Preston: typically 24.3°C by day, 13.4°C at night, with 102 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high24.3°C

Typical low13.4°C

Rain in May102 mm

Comfort

May

May · September · October

81climate match

Beach

June

June · August · July

75climate match

Outdoors

April

April · October · May

79climate match

The weakest month is January, scoring 5 against May’s 81 — days reach only 7.2°C, 17° 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

57.2° / -1.5°

Feb

118.8° / -0.8°

Mar

2713.3° / 2.9°

Apr

6019.6° / 8.1°

May

8124.3° / 13.4°

Jun

6228.9° / 18.6°

Jul

4831.4° / 21.1°

Aug

5430.4° / 20°

Sep

7527° / 16.4°

Oct

6620.8° / 10.3°

Nov

4014.6° / 4.9°

Dec

129.4° / 0.7°

Monthly climate evidence for Preston — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 42 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	7.2°C	-1.5°C	89 mm	8.7	3.5°C	9 h 44	5	Strong coverage
February	8.8°C	-0.8°C	78 mm	7.9	2.6°C	10 h 41	11	Strong coverage
March	13.3°C	2.9°C	110 mm	9.3	4.3°C	11 h 50	27	Strong coverage
April	19.6°C	8.1°C	93 mm	9	8.6°C	13 h 09	60	Strong coverage
May	24.3°C	13.4°C	102 mm	8.8	14.1°C	14 h 16	81	Strong coverage
June	28.9°C	18.6°C	103 mm	8.9	20.2°C	14 h 51	62	Strong coverage
July	31.4°C	21.1°C	114 mm	8.5	24.7°C	14 h 37	48	Strong coverage
August	30.4°C	20°C	117 mm	7.6	25.7°C	13 h 40	54	Strong coverage
September	27°C	16.4°C	100 mm	6.6	23.4°C	12 h 23	75	Strong coverage
October	20.8°C	10.3°C	111 mm	7.7	18.5°C	11 h 07	66	Strong coverage
November	14.6°C	4.9°C	88 mm	7.2	12.4°C	10 h 01	40	Strong coverage
December	9.4°C	0.7°C	101 mm	9.1	7.3°C	9 h 28	12	Strong coverage

What has changed

Preston 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

+1.6

Feb

+2.2

Mar

+1.2

Apr

+1.5

May

+0.6

Jun

+0.6

Jul

+1.4

Aug

+0.2

Sep

+0.5

Oct

+0.7

Nov

0.0

Dec

+1.9

May daytime highs, 2011–2025. Last recorded: 24.2°C.

Records at ROYAL OAK 2 SSW, 1948–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	25.0°C30 Jan 2002	-21.1°C18 Jan 1982	68 mm28 Jan 1998	195 mm1978 · driest 15 mm in 1981	78
February	25.0°C21 Feb 2018	-19.4°C14 Feb 1979	66 mm2 Feb 1973	206 mm2003 · driest 9 mm in 2009	78
March	30.6°C30 Mar 1998	-12.2°C7 Mar 2015	92 mm26 Mar 1978	249 mm1994 · driest 2 mm in 2006	78
April	33.9°C27 Apr 1990	-5.0°C7 Apr 1982	91 mm22 Apr 2006	229 mm1983 · driest 15 mm in 1985	78
May	36.1°C31 May 2011	1.7°C4 May 1957	104 mm24 May 1979	258 mm1990 · driest 8 mm in 1964	77
June	38.3°C29 Jun 1959	6.1°C9 Jun 1997	143 mm25 Jun 2006	330 mm2006 · driest 4 mm in 1954	78
July	38.9°C6 Jul 2010	10.6°C28 Jul 1977	154 mm10 Jul 2010	282 mm1956 · driest 21 mm in 1983	77
August	38.3°C31 Aug 1953	7.2°C29 Aug 1986	181 mm8 Aug 1959	376 mm2020 · driest 20 mm in 1995	77
September	36.1°C11 Sep 1983	2.8°C24 Sep 1963	201 mm16 Sep 1999	327 mm1999 · driest 2 mm in 2019	76
October	35.0°C2 Oct 2019	-3.9°C24 Oct 1969	138 mm29 Oct 2012	264 mm2012 · driest 0 mm in 1963	78
November	28.9°C1 Nov 1950	-8.9°C29 Nov 1955	226 mm2 Nov 1956	334 mm1956 · driest 9 mm in 1965	78
December	24.4°C6 Dec 1998	-15.6°C25 Dec 1983	68 mm18 Dec 2023	228 mm1983 · driest 16 mm in 2017	78

Typical days per month at ROYAL OAK 2 SSW, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	20	3	2
February	0	0	17	3	2
March	<1	0	10	4	<1
April	5	<1	1	3	<1
May	15	4	0	3	0
June	26	13	0	4	0
July	31	23	0	4	0
August	30	19	0	4	0
September	22	6	0	3	0
October	6	<1	<1	3	0
November	<1	0	5	3	0
December	0	0	15	4	1

How often, not how much — every day in ROYAL OAK 2 SSW’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%	10%	33%	3.9–10.0°C
February	2%	29%	10%	34%	5.0–11.4°C
March	11%	29%	11%	35%	10.6–15.8°C
April	35%	30%	11%	35%	17.1–21.6°C
May	63%	29%	11%	35%	22.3–26.2°C
June	73%	27%	11%	28%	27.1–30.0°C
July	73%	27%	11%	29%	29.6–32.6°C
August	76%	24%	11%	24%	28.6–31.6°C
September	76%	22%	9%	21%	25.3–28.4°C
October	49%	22%	9%	21%	18.9–22.7°C
November	13%	24%	10%	24%	12.3–16.9°C
December	2%	28%	11%	32%	5.7–12.1°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.

1949Each stripe is one year’s mean temperature against the 74-year average. Warmest: 2024. Coolest: 1978.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4366114
NOAA station: USC00187806 · ROYAL OAK 2 SSW
Station distance: 24.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 38.71°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 42 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 ROYAL OAK 2 SSW is what differs

Easton→Cambridge→Algonquin→Saint Michaels→Trappe→Tilghman Island→

Or put two places side by side: Preston vs Easton

Best time to visitPreston.

May

June

April

The whole year,without the guesswork.

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

Nearby, measured,and named.

Best time to visit
Preston.

The whole year,
without the guesswork.

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

Nearby, measured,
and named.