United States · 1991–2020

Best time to visit
Williamsburg.

September leads for comfortable weather in Williamsburg: typically 24°C by day, 11.7°C at night, with 112 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24°C

Typical low11.7°C

Rain in September112 mm

Comfort

September

September · June · August

78climate match

Beach

July

July · August · June

72climate match

Outdoors

October

October · May · September

71climate match

The weakest month is January, scoring 5 against September’s 78 — days reach only 2.9°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

52.9° / -6.3°

Feb

54.4° / -6°

Mar

99.5° / -2.2°

Apr

3916.6° / 3.6°

May

6522° / 8.8°

Jun

7626.5° / 13.9°

Jul

6829° / 16.6°

Aug

7128.4° / 15.8°

Sep

7824° / 11.7°

Oct

5017.5° / 5.3°

Nov

2211.5° / 0.8°

Dec

55.1° / -3.7°

Monthly climate evidence for Williamsburg — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	2.9°C	-6.3°C	75 mm	8.4	9 h 35	5	Good coverage
February	4.4°C	-6°C	53 mm	6.7	10 h 36	5	Good coverage
March	9.5°C	-2.2°C	87 mm	8.6	11 h 49	9	Good coverage
April	16.6°C	3.6°C	99 mm	10.5	13 h 13	39	Good coverage
May	22°C	8.8°C	112 mm	10.9	14 h 24	65	Good coverage
June	26.5°C	13.9°C	89 mm	9.8	15 h 03	76	Good coverage
July	29°C	16.6°C	88 mm	8.8	14 h 48	68	Good coverage
August	28.4°C	15.8°C	94 mm	8.2	13 h 46	71	Good coverage
September	24°C	11.7°C	112 mm	8.9	12 h 25	78	Good coverage
October	17.5°C	5.3°C	81 mm	7.7	11 h 03	50	Good coverage
November	11.5°C	0.8°C	82 mm	7.7	9 h 52	22	Good coverage
December	5.1°C	-3.7°C	74 mm	7.4	9 h 18	5	Good coverage

Records at RAYSTOWN LAKE 2, 1974–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.1°C9 Jan 2008	-26.1°C19 Jan 1994	69 mm19 Jan 1996	182 mm1996 · driest 3 mm in 1981	38
February	26.1°C25 Feb 1985	-24.4°C18 Feb 1979	50 mm24 Feb 1998	133 mm1981 · driest 10 mm in 1991	38
March	28.9°C31 Mar 1998	-17.8°C2 Mar 1978	52 mm5 Mar 2008	161 mm1994 · driest 21 mm in 1995	38
April	32.8°C19 Apr 1976	-9.4°C5 Apr 1975	47 mm3 Apr 1977	207 mm1993 · driest 21 mm in 1997	38
May	33.9°C20 May 1996	-3.9°C1 May 1978	77 mm29 May 2009	176 mm2012 · driest 26 mm in 1977	38
June	36.1°C27 Jun 2007	0.6°C15 Jun 1978	58 mm9 Jun 1993	190 mm1989 · driest 26 mm in 2011	39
July	40.0°C17 Jul 1988	4.4°C30 Jul 1982	66 mm21 Jul 1989	236 mm1989 · driest 20 mm in 1983	39
August	37.2°C14 Aug 1988	2.8°C29 Aug 1982	83 mm16 Aug 1999	229 mm2007 · driest 8 mm in 1989	38
September	35.6°C12 Sep 1983	-5.6°C24 Sep 2003	116 mm18 Sep 2004	293 mm1996 · driest 14 mm in 2005	38
October	31.7°C1 Oct 1986	-6.7°C31 Oct 1988	95 mm21 Oct 1995	214 mm1976 · driest 26 mm in 1994	37
November	27.8°C5 Nov 2003	-12.2°C30 Nov 1976	87 mm8 Nov 1997	231 mm1997 · driest 4 mm in 1998	37
December	23.3°C6 Dec 2001	-21.7°C25 Dec 1983	67 mm11 Dec 1992	157 mm1990 · driest 9 mm in 1998	37

Typical days per month at RAYSTOWN LAKE 2, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	2	3
February	0	0	24	2	3
March	<1	0	21	3	<1
April	3	<1	7	3	<1
May	10	2	<1	4	0
June	20	7	0	3	0
July	27	13	0	3	0
August	26	10	0	3	0
September	13	3	<1	3	0
October	3	<1	4	3	<1
November	<1	0	13	3	<1
December	0	0	24	3	2

How often, not how much — every day in RAYSTOWN LAKE 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%	26%	7%	25%	-1.7–6.9°C
February	<1%	24%	6%	24%	0.6–7.4°C
March	7%	27%	10%	34%	6.6–12.2°C
April	23%	33%	10%	41%	14.2–18.3°C
May	47%	36%	12%	51%	19.8–24.6°C
June	65%	33%	11%	40%	24.6–28.5°C
July	72%	28%	9%	28%	27.0–30.8°C
August	73%	27%	9%	29%	26.4–29.8°C
September	62%	29%	10%	33%	22.5–26.1°C
October	27%	26%	9%	28%	15.1–19.8°C
November	8%	27%	9%	30%	8.3–14.0°C
December	<1%	24%	9%	21%	1.7–8.2°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.

1975Each stripe is one year’s mean temperature against the 35-year average. Warmest: 1998. Coolest: 1978.2011

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5219574
NOAA station: USC00367312 · RAYSTOWN LAKE 2
Station distance: 13.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 19 usable years
Daylight: Calculated from latitude 40.46°, 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 RAYSTOWN LAKE 2 is what differs

Huntingdon→Mount Union→McConnellstown→Allenport→Petersburg→Three Springs→

Or put two places side by side: Williamsburg vs Huntingdon

Best time to visitWilliamsburg.