United States · 1991–2020

Best time to visit
South Charleston.

September leads for comfortable weather in South Charleston: typically 26.7°C by day, 12.8°C at night, with 86 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.7°C

Typical low12.8°C

Rain in September86 mm

Comfort

September

September · May · June

76climate match

Beach

August

August · June · July

70climate match

Outdoors

October

October · April · September

78climate match

The weakest month is January, scoring 5 against September’s 76 — days reach only 5.9°C, 18° below the 24°C the score treats as ideal, and nights drop to -5°C.

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

55.9° / -5°

Feb

58° / -3.6°

Mar

1913.2° / -0.3°

Apr

5120.1° / 5.1°

May

6924.4° / 10.8°

Jun

6628.2° / 15.5°

Jul

5329.7° / 17.5°

Aug

6629.4° / 16.7°

Sep

7626.7° / 12.8°

Oct

5920.1° / 6.1°

Nov

2813.8° / 0.1°

Dec

58.2° / -2.6°

Monthly climate evidence for South Charleston — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	5.9°C	-5°C	83 mm	11.1	9 h 46	5	Good coverage
February	8°C	-3.6°C	84 mm	10.8	10 h 42	5	Good coverage
March	13.2°C	-0.3°C	104 mm	11.8	11 h 50	19	Good coverage
April	20.1°C	5.1°C	108 mm	11.6	13 h 08	51	Good coverage
May	24.4°C	10.8°C	134 mm	11.8	14 h 14	69	Good coverage
June	28.2°C	15.5°C	116 mm	11.7	14 h 49	66	Good coverage
July	29.7°C	17.5°C	153 mm	10.8	14 h 35	53	Strong coverage
August	29.4°C	16.7°C	92 mm	9	13 h 39	66	Strong coverage
September	26.7°C	12.8°C	86 mm	7.2	12 h 23	76	Strong coverage
October	20.1°C	6.1°C	84 mm	8.6	11 h 08	59	Strong coverage
November	13.8°C	0.1°C	79 mm	8.9	10 h 02	28	Strong coverage
December	8.2°C	-2.6°C	104 mm	11.3	9 h 30	5	Strong coverage

Records at CHARLESTON WFO, 1996–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	26.7°C12 Jan 2020	-22.8°C30 Jan 2014	50 mm23 Jan 2016	154 mm2009 · driest 32 mm in 2003	30
February	27.8°C21 Feb 2018	-27.2°C20 Feb 2015	74 mm17 Feb 2023	215 mm2018 · driest 23 mm in 2002	30
March	32.2°C23 Mar 2026	-17.8°C4 Mar 2014	67 mm1 Mar 2021	223 mm1997 · driest 41 mm in 2003	30
April	33.9°C28 Apr 2009	-7.2°C10 Apr 1997	68 mm12 Apr 2024	195 mm2020 · driest 50 mm in 2001	30
May	33.3°C31 May 2006	-2.2°C22 May 2002	69 mm28 May 2004	255 mm2001 · driest 30 mm in 1999	30
June	38.9°C30 Jun 2012	3.3°C2 Jun 2003	55 mm13 Jun 2010	213 mm1998 · driest 29 mm in 1999	30
July	38.3°C9 Jul 2012	9.4°C2 Jul 2010	72 mm21 Jul 2010	243 mm2013 · driest 32 mm in 2024	30
August	38.9°C17 Aug 2007	7.2°C31 Aug 1999	55 mm15 Aug 2022	181 mm2022 · driest 8 mm in 2012	30
September	36.7°C4 Sep 2011	2.2°C30 Sep 2003	63 mm27 Sep 2009	225 mm2011 · driest 6 mm in 2019	30
October	35.0°C4 Oct 2019	-5.6°C23 Oct 1997	55 mm21 Oct 2016	145 mm2006 · driest 12 mm in 2024	30
November	29.4°C1 Nov 2024	-12.2°C19 Nov 2014	85 mm13 Nov 2003	239 mm2003 · driest 26 mm in 2009	30
December	25.6°C6 Dec 2001	-19.4°C21 Dec 2004	61 mm1 Dec 2010	192 mm2007 · driest 32 mm in 2022	30

Typical days per month at CHARLESTON WFO, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	<1	0	24	3	7
February	<1	0	23	2	6
March	3	<1	18	4	3
April	8	2	6	4	<1
May	16	5	<1	5	0
June	25	11	0	4	0
July	29	17	0	5	0
August	29	15	0	3	0
September	20	8	0	3	0
October	8	1	4	3	<1
November	1	0	17	3	1
December	<1	0	22	3	4

How often, not how much — every day in CHARLESTON WFO’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	2%	36%	8%	49%	2.7–8.6°C
February	3%	38%	8%	53%	3.5–12.1°C
March	15%	37%	11%	50%	9.8–16.8°C
April	35%	38%	12%	54%	17.4–22.4°C
May	52%	39%	14%	52%	22.0–26.7°C
June	62%	37%	13%	51%	26.7–29.5°C
July	65%	35%	15%	43%	28.1–31.4°C
August	72%	28%	11%	33%	27.7–31.0°C
September	72%	24%	8%	26%	24.4–29.1°C
October	42%	27%	9%	32%	18.3–22.6°C
November	16%	30%	9%	40%	10.4–16.8°C
December	3%	36%	10%	49%	5.8–11.8°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.

1997Each stripe is one year’s mean temperature against the 29-year average. Warmest: 2024. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4822764
NOAA station: USC00461579 · CHARLESTON WFO
Station distance: 1.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 24 usable years
Daylight: Calculated from latitude 38.37°, 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 CHARLESTON WFO is what differs

Dunbar→North Charleston→Brounland→Davis Creek→Dungriff→Elk→

Or put two places side by side: South Charleston vs Dunbar

Best time to visitSouth Charleston.