United States · 1991–2020

Best time to visit
Germantown.

September leads for comfortable weather in Germantown: typically 24.3°C by day, 14.1°C at night, with 121 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.3°C

Typical low14.1°C

Rain in September121 mm

Comfort

September

September · May · June

81climate match

Beach

July

July · August · June

72climate match

Outdoors

October

October · April · May

73climate match

The weakest month is January, scoring 5 against September’s 81 — days reach only 3.9°C, 20° 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

53.9° / -4.2°

Feb

56° / -3°

Mar

1811.1° / 0.6°

Apr

5017.9° / 6.1°

May

7222.7° / 11.3°

Jun

7126.8° / 16°

Jul

6129.1° / 18.4°

Aug

6728.1° / 17.7°

Sep

8124.3° / 14.1°

Oct

5418.1° / 8°

Nov

2711.9° / 2.5°

Dec

56.4° / -1.5°

Monthly climate evidence for Germantown — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3.9°C	-4.2°C	89 mm	8.4	9 h 41	5	Strong coverage
February	6°C	-3°C	77 mm	7.9	10 h 40	5	Strong coverage
March	11.1°C	0.6°C	99 mm	8.5	11 h 50	18	Strong coverage
April	17.9°C	6.1°C	93 mm	8.8	13 h 10	50	Strong coverage
May	22.7°C	11.3°C	110 mm	9.9	14 h 18	72	Strong coverage
June	26.8°C	16°C	121 mm	9.5	14 h 54	71	Strong coverage
July	29.1°C	18.4°C	115 mm	8.7	14 h 40	61	Strong coverage
August	28.1°C	17.7°C	106 mm	8	13 h 42	67	Strong coverage
September	24.3°C	14.1°C	121 mm	7.9	12 h 24	81	Strong coverage
October	18.1°C	8°C	106 mm	7.3	11 h 06	54	Strong coverage
November	11.9°C	2.5°C	88 mm	6.9	9 h 58	27	Strong coverage
December	6.4°C	-1.5°C	97 mm	8.2	9 h 25	5	Strong coverage

Records at DAMASCUS 3 SSW, 1993–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.2°C26 Jan 2024	-24.4°C19 Jan 1994	61 mm23 Jan 2016	175 mm1996 · driest 37 mm in 2008	33
February	25.6°C21 Feb 2018	-22.8°C5 Feb 1996	53 mm13 Feb 2014	153 mm1998 · driest 15 mm in 2009	33
March	30.0°C30 Mar 1998	-16.1°C6 Mar 2015	68 mm21 Mar 2019	189 mm1994 · driest 9 mm in 2006	33
April	32.8°C17 Apr 2002	-5.6°C10 Apr 1997	81 mm30 Apr 2014	175 mm2011 · driest 45 mm in 2026	34
May	34.4°C18 May 2026	-2.2°C14 May 1996	77 mm16 May 2014	248 mm2025 · driest 23 mm in 2023	32
June	35.6°C22 Jun 2024	3.3°C2 Jun 1993	129 mm10 Jun 2013	274 mm2015 · driest 35 mm in 1994	34
July	37.8°C22 Jul 2011	9.4°C31 Jul 1997	128 mm30 Jul 2016	254 mm2018 · driest 25 mm in 1997	34
August	36.7°C16 Aug 1997	7.8°C7 Aug 1994	99 mm12 Aug 2010	318 mm2024 · driest 8 mm in 2006	33
September	34.4°C5 Sep 2023	2.2°C30 Sep 1993	111 mm30 Sep 2010	305 mm2003 · driest 9 mm in 2005	33
October	32.2°C2 Oct 2019	-5.6°C23 Oct 1997	138 mm29 Oct 2012	263 mm2012 · driest 10 mm in 2024	33
November	26.1°C6 Nov 2024	-9.4°C25 Nov 2013	75 mm7 Nov 1997	194 mm2018 · driest 23 mm in 2021	33
December	23.9°C6 Dec 1998	-16.7°C24 Dec 2022	54 mm15 Dec 2022	181 mm1996 · driest 21 mm in 2021	33

Typical days per month at DAMASCUS 3 SSW, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	24	3	5
February	0	0	21	3	5
March	<1	0	16	4	2
April	4	<1	3	3	<1
May	12	3	<1	4	0
June	22	7	0	4	0
July	28	14	0	4	0
August	26	10	0	3	0
September	14	3	0	4	0
October	3	<1	2	3	0
November	<1	0	10	3	<1
December	0	0	21	3	3

How often, not how much — every day in DAMASCUS 3 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%	27%	10%	28%	1.0–7.5°C
February	2%	28%	9%	35%	2.6–9.1°C
March	10%	27%	11%	29%	8.2–14.9°C
April	29%	29%	10%	35%	15.9–20.7°C
May	53%	32%	13%	41%	20.4–24.5°C
June	68%	31%	12%	36%	25.5–28.2°C
July	72%	28%	12%	32%	27.6–31.1°C
August	74%	26%	10%	30%	26.1–29.4°C
September	67%	27%	12%	30%	22.9–26.5°C
October	33%	24%	9%	24%	16.4–20.3°C
November	8%	23%	9%	22%	9.2–14.6°C
December	1%	26%	11%	26%	3.5–9.4°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.

1994Each stripe is one year’s mean temperature against the 30-year average. Warmest: 2024. Coolest: 1996.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4356050
NOAA station: USC00182336 · DAMASCUS 3 SSW
Station distance: 10.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 26 usable years
Daylight: Calculated from latitude 39.17°, 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 DAMASCUS 3 SSW is what differs

Damascus→Clarksburg→Green Valley→Mount Airy→Urbana→Sykesville→

Or put two places side by side: Germantown vs Damascus

Best time to visitGermantown.