United States · 1991–2020

Best time to visit
Glassmanor.

May leads for comfortable weather in Glassmanor: typically 24.4°C by day, 13.1°C at night, with 130 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMay

Typical high24.4°C

Typical low13.1°C

Rain in May130 mm

Comfort

May

May · September · October

75climate match

Beach

August

August · July · June

73climate match

Outdoors

October

October · April · November

80climate match

The weakest month is January, scoring 5 against May’s 75 — days reach only 6.4°C, 18° 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

56.4° / -2.8°

Feb

78.2° / -2°

Mar

3013.5° / 1.9°

Apr

5919.9° / 7.4°

May

7524.4° / 13.1°

Jun

5729.2° / 18.2°

Jul

4731.5° / 20.8°

Aug

5430.5° / 20°

Sep

7527° / 16.3°

Oct

6320.2° / 9.7°

Nov

3714.1° / 3.8°

Dec

98.9° / -0.1°

Monthly climate evidence for Glassmanor — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	6.4°C	-2.8°C	67 mm	8.2	9 h 43	5	Good coverage
February	8.2°C	-2°C	74 mm	8.1	10 h 41	7	Good coverage
March	13.5°C	1.9°C	82 mm	8.3	11 h 50	30	Good coverage
April	19.9°C	7.4°C	96 mm	9.1	13 h 09	59	Good coverage
May	24.4°C	13.1°C	130 mm	10.2	14 h 16	75	Good coverage
June	29.2°C	18.2°C	138 mm	9.1	14 h 52	57	Good coverage
July	31.5°C	20.8°C	130 mm	8.3	14 h 38	47	Good coverage
August	30.5°C	20°C	111 mm	8.8	13 h 41	54	Good coverage
September	27°C	16.3°C	102 mm	7.2	12 h 23	75	Good coverage
October	20.2°C	9.7°C	112 mm	7.6	11 h 07	63	Good coverage
November	14.1°C	3.8°C	82 mm	7	10 h 00	37	Good coverage
December	8.9°C	-0.1°C	100 mm	8.8	9 h 28	9	Good coverage

Records at OXON HILL, 2002–2021
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.3°C5 Jan 2004	-15.6°C7 Jan 2014	43 mm14 Jan 2005	98 mm2015 · driest 28 mm in 2018	19
February	27.2°C22 Feb 2018	-16.7°C20 Feb 2015	65 mm11 Feb 2018	194 mm2003 · driest 12 mm in 2009	19
March	29.4°C14 Mar 2006	-11.7°C7 Mar 2015	47 mm22 Mar 2019	148 mm2011 · driest 4 mm in 2006	19
April	34.4°C27 Apr 2009	-2.8°C4 Apr 2013	52 mm21 Apr 2008	178 mm2008 · driest 44 mm in 2019	19
May	35.6°C31 May 2011	1.1°C10 May 2020	97 mm12 May 2008	277 mm2008 · driest 28 mm in 2007	19
June	38.9°C30 Jun 2012	9.4°C4 Jun 2019	128 mm26 Jun 2006	312 mm2006 · driest 19 mm in 2017	20
July	39.4°C8 Jul 2012	12.8°C12 Jul 2002	109 mm7 Jul 2020	254 mm2020 · driest 34 mm in 2009	20
August	38.9°C9 Aug 2007	12.8°C7 Aug 2004	129 mm28 Aug 2011	267 mm2020 · driest 25 mm in 2006	19
September	36.1°C2 Sep 2010	6.1°C22 Sep 2020	95 mm8 Sep 2011	285 mm2011 · driest 2 mm in 2005	19
October	33.9°C10 Oct 2007	0.0°C24 Oct 2003	114 mm8 Oct 2005	233 mm2005 · driest 26 mm in 2012	19
November	27.8°C6 Nov 2003	-6.7°C20 Nov 2014	81 mm12 Nov 2020	211 mm2018 · driest 10 mm in 2016	19
December	24.4°C2 Dec 2006	-12.8°C20 Dec 2004	61 mm16 Dec 2018	177 mm2020 · driest 17 mm in 2017	19

Typical days per month at OXON HILL, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	22	2	3
February	<1	0	20	2	3
March	2	0	13	3	2
April	7	2	1	3	<1
May	15	5	0	4	0
June	26	14	0	4	0
July	30	23	0	4	0
August	29	19	0	3	0
September	21	8	0	3	0
October	6	<1	<1	3	<1
November	<1	0	6	3	<1
December	0	0	17	4	2

How often, not how much — every day in OXON HILL’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%	26%	7%	31%	3.6–9.4°C
February	3%	30%	9%	41%	4.0–11.1°C
March	16%	27%	10%	27%	10.4–16.3°C
April	39%	30%	10%	38%	17.6–22.0°C
May	55%	33%	13%	46%	21.8–27.0°C
June	69%	31%	14%	37%	28.1–30.3°C
July	73%	27%	12%	29%	29.9–33.1°C
August	71%	28%	11%	31%	28.5–32.1°C
September	74%	24%	11%	24%	25.2–29.3°C
October	45%	25%	10%	26%	18.9–21.6°C
November	11%	23%	10%	22%	11.6–16.5°C
December	1%	28%	12%	32%	6.6–11.3°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.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4356165
NOAA station: USC00186800 · OXON HILL
Station distance: 2.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 18 usable years
Daylight: Calculated from latitude 38.82°, 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 OXON HILL is what differs

Alexandria→Waldorf→Saint Charles→Clinton→Oxon Hill-Glassmanor→Suitland-Silver Hill→

Or put two places side by side: Glassmanor vs Alexandria

Best time to visitGlassmanor.

May

August

October

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Glassmanor.

The whole year,
without the guesswork.

Nearby, measured,
and named.