United States · 1991–2020

Best time to visit
Martinsburg.

June leads for comfortable weather in Martinsburg: typically 25.7°C by day, 14.4°C at night, with 87 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high25.7°C

Typical low14.4°C

Rain in June87 mm

Comfort

June

June · August · September

80climate match

Beach

July

July · August · June

68climate match

Outdoors

May

May · September · October

76climate match

The weakest month is January, scoring 5 against June’s 80 — days reach only 1.8°C, 22° 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

51.8° / -6.2°

Feb

53.5° / -5.4°

Mar

88.5° / -1.4°

Apr

4115.9° / 4.1°

May

6721.4° / 9.7°

Jun

8025.7° / 14.4°

Jul

7128° / 16.3°

Aug

7827.1° / 15.3°

Sep

7823.3° / 11.6°

Oct

5016.9° / 6°

Nov

2010.1° / 0.9°

Dec

54.2° / -3.4°

Monthly climate evidence for Martinsburg — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	1.8°C	-6.2°C	57 mm	7.9	9 h 35	5	Strong coverage
February	3.5°C	-5.4°C	50 mm	6.8	10 h 36	5	Strong coverage
March	8.5°C	-1.4°C	77 mm	9.1	11 h 49	8	Strong coverage
April	15.9°C	4.1°C	83 mm	9.5	13 h 13	41	Strong coverage
May	21.4°C	9.7°C	94 mm	10.6	14 h 23	67	Strong coverage
June	25.7°C	14.4°C	87 mm	10.3	15 h 02	80	Strong coverage
July	28°C	16.3°C	89 mm	9.5	14 h 47	71	Strong coverage
August	27.1°C	15.3°C	83 mm	8.2	13 h 46	78	Strong coverage
September	23.3°C	11.6°C	101 mm	7.6	12 h 24	78	Strong coverage
October	16.9°C	6°C	74 mm	8	11 h 04	50	Strong coverage
November	10.1°C	0.9°C	72 mm	7.3	9 h 53	20	Strong coverage
December	4.2°C	-3.4°C	65 mm	7.4	9 h 19	5	Strong coverage

What has changed

Martinsburg runs +1.5°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

+1.5

Feb

+2.7

Mar

+1.6

Apr

+1.3

May

+1.5

Jun

+0.9

Jul

+1.4

Aug

+0.7

Sep

+1.5

Oct

+1.7

Nov

+0.8

Dec

+2.4

June daytime highs, 2011–2025. Last recorded: 27.1°C.

Records at ALTOONA BLAIR CO AP, 1949–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.3°C25 Jan 1950	-31.7°C19 Jan 1994	49 mm19 Jan 1996	176 mm1978 · driest 7 mm in 1981	70
February	24.4°C21 Feb 2018	-23.3°C18 Feb 1979	59 mm14 Feb 1984	125 mm2018 · driest 12 mm in 2009	70
March	29.4°C30 Mar 1998	-17.2°C2 Mar 1980	57 mm5 Mar 1965	160 mm1967 · driest 13 mm in 1966	70
April	31.7°C18 Apr 1976	-11.1°C7 Apr 1982	65 mm16 Apr 1993	197 mm2011 · driest 13 mm in 1971	70
May	34.4°C29 May 1969	-3.9°C11 May 1966	60 mm25 May 1997	187 mm2025 · driest 11 mm in 1964	70
June	36.1°C21 Jun 1953	0.0°C1 Jun 1966	112 mm22 Jun 1972	330 mm1972 · driest 14 mm in 1965	70
July	39.4°C22 Jul 2011	5.0°C21 Jul 1966	68 mm19 Jul 1996	222 mm1989 · driest 25 mm in 2002	70
August	35.6°C2 Aug 2002	2.2°C29 Aug 1982	94 mm18 Aug 2021	202 mm2021 · driest 1 mm in 1989	69
September	36.1°C3 Sep 1953	-1.1°C24 Sep 1963	141 mm8 Sep 2004	361 mm2004 · driest 8 mm in 1985	70
October	32.2°C1 Oct 2019	-6.7°C24 Oct 1969	74 mm15 Oct 1954	214 mm1976 · driest 2 mm in 1963	70
November	26.1°C1 Nov 1950	-13.9°C25 Nov 1950	128 mm7 Nov 1997	277 mm1997 · driest 12 mm in 2012	70
December	23.3°C6 Dec 1998	-23.9°C25 Dec 1983	47 mm1 Dec 2010	146 mm1990 · driest 11 mm in 1965	70

Typical days per month at ALTOONA BLAIR CO AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	2	5
February	0	0	24	2	3
March	<1	0	19	3	5
April	3	<1	7	3	<1
May	10	2	<1	3	0
June	19	5	0	3	0
July	26	9	0	3	0
August	24	6	0	3	0
September	12	3	<1	3	0
October	3	<1	3	2	<1
November	<1	0	14	2	2
December	0	0	24	2	2

The best month has moved. On the 1961–1990 numbers the strongest month here was August (scoring 85); on 2011–2025 it is September (87). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in ALTOONA BLAIR CO AP’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%	27%	6%	31%	-2.4–5.4°C
February	<1%	26%	7%	28%	-0.1–6.9°C
March	6%	29%	9%	35%	5.3–12.2°C
April	20%	32%	10%	40%	13.2–18.3°C
May	43%	35%	10%	48%	18.4–23.6°C
June	64%	32%	10%	39%	23.8–27.3°C
July	70%	30%	10%	35%	25.9–29.8°C
August	73%	26%	9%	27%	24.9–28.6°C
September	58%	26%	9%	29%	20.7–25.3°C
October	26%	24%	7%	26%	14.2–19.5°C
November	5%	26%	8%	27%	6.8–12.8°C
December	<1%	26%	8%	27%	0.2–7.4°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 69-year average. Warmest: 1998. Coolest: 1978.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5200055
NOAA station: USW00014736 · ALTOONA BLAIR CO AP
Station distance: 1.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 40.31°, 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 ALTOONA BLAIR CO AP is what differs

Roaring Spring→Claysburg→Saxton→Broad Top City→Stonerstown→Woodbury→

Or put two places side by side: Martinsburg vs Roaring Spring

Best time to visitMartinsburg.

June

July

May

The whole year,without the guesswork.

Martinsburg runs +1.5°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Martinsburg.

The whole year,
without the guesswork.

Martinsburg runs +1.5°C
on the 1961–1990 baseline.

Nearby, measured,
and named.