United States · 1991–2020

Best time to visit
Blacksburg.

September leads for comfortable weather in Blacksburg: typically 24.6°C by day, 11.7°C at night, with 88 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.6°C

Typical low11.7°C

Rain in September88 mm

Comfort

September

September · June · August

81climate match

Beach

July

July · August · June

64climate match

Outdoors

October

October · September · May

77climate match

The weakest month is January, scoring 5 against September’s 81 — days reach only 5.5°C, 18° below the 24°C the score treats as ideal, and nights drop to -5.4°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

55.5° / -5.4°

Feb

57.7° / -4.1°

Mar

1711.9° / -0.9°

Apr

4518° / 4°

May

6622.4° / 9.3°

Jun

7526.3° / 13.9°

Jul

6728.3° / 16.3°

Aug

7427.5° / 15.4°

Sep

8124.6° / 11.7°

Oct

5618.9° / 5.1°

Nov

2512.7° / -0.6°

Dec

57.3° / -3.6°

Monthly climate evidence for Blacksburg — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	5.5°C	-5.4°C	80 mm	8.7	9 h 51	5	Strong coverage
February	7.7°C	-4.1°C	72 mm	8.4	10 h 46	5	Strong coverage
March	11.9°C	-0.9°C	98 mm	9.8	11 h 51	17	Strong coverage
April	18°C	4°C	98 mm	9.9	13 h 06	45	Strong coverage
May	22.4°C	9.3°C	114 mm	10.9	14 h 09	66	Strong coverage
June	26.3°C	13.9°C	102 mm	9.8	14 h 42	75	Strong coverage
July	28.3°C	16.3°C	108 mm	10.3	14 h 29	67	Strong coverage
August	27.5°C	15.4°C	91 mm	8.9	13 h 35	74	Strong coverage
September	24.6°C	11.7°C	88 mm	6.9	12 h 22	81	Strong coverage
October	18.9°C	5.1°C	75 mm	6.8	11 h 10	56	Strong coverage
November	12.7°C	-0.6°C	74 mm	7.4	10 h 07	25	Strong coverage
December	7.3°C	-3.6°C	85 mm	9.2	9 h 37	5	Strong coverage

What has changed

Blacksburg runs +0.8°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

+0.5

Feb

+2.1

Mar

+0.9

Apr

+1.2

May

+0.5

Jun

+0.7

Jul

+1.0

Aug

0.0

Sep

+0.7

Oct

+0.8

Nov

-0.2

Dec

+1.7

September daytime highs, 2011–2025. Last recorded: 24.7°C.

Records at BLACKSBURG NWSO, 1952–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.8°C30 Jan 1975	-27.8°C21 Jan 1985	57 mm4 Jan 1992	197 mm2013 · driest 11 mm in 1981	72
February	26.7°C23 Feb 2018	-24.4°C4 Feb 1970	60 mm16 Feb 2025	161 mm2003 · driest 8 mm in 1980	73
March	30.0°C29 Mar 2020	-16.7°C11 Mar 1969	75 mm29 Mar 2007	212 mm1975 · driest 15 mm in 2006	72
April	35.0°C28 Apr 1957	-10.0°C7 Apr 1982	87 mm22 Apr 1992	197 mm1987 · driest 19 mm in 2001	73
May	32.2°C31 May 2011	-5.0°C5 May 1973	74 mm26 May 1975	247 mm1971 · driest 23 mm in 1969	73
June	35.0°C30 Jun 2012	-1.1°C11 Jun 1972	103 mm27 Jun 2006	300 mm2006 · driest 10 mm in 1966	73
July	37.2°C15 Jul 1954	5.0°C10 Jul 1961	90 mm2 Jul 2021	237 mm1992 · driest 40 mm in 1998	72
August	37.2°C23 Aug 1983	2.2°C29 Aug 1986	87 mm27 Aug 1992	190 mm1985 · driest 22 mm in 2002	73
September	35.6°C2 Sep 1953	-5.6°C24 Sep 1983	113 mm22 Sep 2021	261 mm1957 · driest 6 mm in 2005	73
October	34.4°C4 Oct 2019	-10.6°C27 Oct 1962	75 mm19 Oct 1966	232 mm1976 · driest 1 mm in 2000	72
November	27.8°C2 Nov 2004	-17.8°C25 Nov 1970	74 mm12 Nov 2020	188 mm1977 · driest 10 mm in 2001	73
December	23.9°C6 Dec 2001	-23.3°C23 Dec 1989	81 mm29 Dec 1958	177 mm2009 · driest 5 mm in 1965	73

Typical days per month at BLACKSBURG NWSO, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	3	4
February	0	0	24	2	5
March	<1	0	19	4	3
April	4	<1	7	3	<1
May	12	<1	<1	4	0
June	22	4	0	3	0
July	27	10	0	3	0
August	26	7	0	3	0
September	16	3	0	3	0
October	4	<1	6	3	<1
November	<1	0	19	3	<1
December	0	0	25	3	3

The best month has moved. On the 1961–1990 numbers the strongest month here was September (scoring 84); on 2011–2025 it is June (83). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in BLACKSBURG NWSO’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%	8%	34%	2.4–8.1°C
February	2%	32%	10%	40%	3.6–10.1°C
March	10%	32%	11%	40%	8.8–15.1°C
April	30%	33%	10%	41%	15.3–20.3°C
May	51%	35%	12%	46%	19.9–24.8°C
June	66%	32%	10%	39%	24.3–27.8°C
July	66%	33%	11%	45%	26.5–30.0°C
August	70%	30%	9%	36%	26.1–29.1°C
September	66%	25%	10%	26%	22.7–26.7°C
October	39%	23%	8%	25%	17.0–20.9°C
November	11%	26%	8%	28%	10.0–15.7°C
December	1%	28%	9%	32%	3.4–10.3°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.

1953Each stripe is one year’s mean temperature against the 68-year average. Warmest: 2024. Coolest: 1968.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4747845
NOAA station: USC00440766 · BLACKSBURG NWSO
Station distance: 2.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 37.23°, 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 BLACKSBURG NWSO is what differs

Merrimac→Prices Fork→Elliston→Lafayette→Airport Acres→Alleghany Heights→

Or put two places side by side: Blacksburg vs Merrimac

Best time to visitBlacksburg.