United States · 1991–2020

Best time to visit
Baltimore.

September leads for comfortable weather in Baltimore: typically 25.6°C by day, 11.2°C at night, with 86 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.6°C

Typical low11.2°C

Rain in September86 mm

Comfort

September

September · May · August

77climate match

Beach

August

August · July · June

70climate match

Outdoors

October

October · May · September

74climate match

The weakest month is January, scoring 5 against September’s 77 — days reach only 3.3°C, 21° 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

53.3° / -6.5°

Feb

55.4° / -5.1°

Mar

1611.1° / -0.7°

Apr

4618.3° / 4.5°

May

7423.5° / 10.4°

Jun

7027.7° / 15.1°

Jul

6529.1° / 16.7°

Aug

7328.6° / 15.4°

Sep

7725.6° / 11.2°

Oct

5418.8° / 5.3°

Nov

2311.7° / -0.1°

Dec

55.7° / -3.4°

Monthly climate evidence for Baltimore — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3.3°C	-6.5°C	66 mm	8.6	9 h 38	5	Good coverage
February	5.4°C	-5.1°C	64 mm	8.8	10 h 38	5	Good coverage
March	11.1°C	-0.7°C	90 mm	9.4	11 h 49	16	Good coverage
April	18.3°C	4.5°C	105 mm	10.6	13 h 12	46	Good coverage
May	23.5°C	10.4°C	97 mm	10.8	14 h 21	74	Good coverage
June	27.7°C	15.1°C	115 mm	9.8	14 h 59	70	Good coverage
July	29.1°C	16.7°C	102 mm	9.2	14 h 44	65	Good coverage
August	28.6°C	15.4°C	81 mm	8	13 h 44	73	Good coverage
September	25.6°C	11.2°C	86 mm	7.4	12 h 24	77	Good coverage
October	18.8°C	5.3°C	82 mm	8.5	11 h 05	54	Good coverage
November	11.7°C	-0.1°C	70 mm	7.8	9 h 55	23	Good coverage
December	5.7°C	-3.4°C	75 mm	8.6	9 h 21	5	Good coverage

Records at LANCASTER FAIRFIELD CO AP, 1996–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	22.2°C11 Jan 2020	-29.4°C27 Jan 2003	66 mm3 Jan 2000	206 mm2005 · driest 10 mm in 2025	30
February	26.1°C24 Feb 2017	-28.8°C17 Feb 2015	44 mm17 Feb 2022	144 mm2019 · driest 23 mm in 2026	30
March	28.9°C20 Mar 2012	-20.5°C6 Mar 2015	58 mm1 Mar 2017	192 mm2008 · driest 35 mm in 2022	30
April	30.6°C25 Apr 2009	-9.4°C10 Apr 1997	61 mm3 Apr 2018	205 mm2011 · driest 44 mm in 2010	30
May	33.9°C27 May 2012	-3.3°C4 May 2005	56 mm18 May 2004	167 mm2004 · driest 12 mm in 2009	30
June	37.2°C29 Jun 2012	2.2°C2 Jun 2025	78 mm23 Jun 2016	238 mm2008 · driest 20 mm in 2012	30
July	37.8°C7 Jul 2012	6.1°C4 Jul 1996	75 mm6 Jul 2022	266 mm2017 · driest 42 mm in 2012	31
August	37.2°C30 Aug 2024	5.0°C21 Aug 2024	59 mm30 Aug 2005	123 mm2007 · driest 11 mm in 2025	30
September	35.6°C8 Sep 2002	-1.1°C22 Sep 1999	60 mm8 Sep 2004	172 mm2018 · driest 17 mm in 2019	30
October	33.9°C1 Oct 2019	-7.2°C23 Oct 1997	63 mm23 Oct 2007	165 mm2006 · driest 8 mm in 2024	30
November	26.7°C10 Nov 2020	-14.9°C13 Nov 2019	74 mm5 Nov 2017	134 mm2017 · driest 15 mm in 2012	30
December	22.8°C6 Dec 1998	-22.7°C31 Dec 2017	68 mm16 Dec 2000	117 mm2007 · driest 21 mm in 2010	30

Typical days per month at LANCASTER FAIRFIELD CO AP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	25	2
February	<1	0	23	2
March	1	0	19	3
April	5	<1	7	4
May	14	4	<1	4
June	24	10	0	4
July	29	13	0	3
August	28	11	0	3
September	18	5	<1	3
October	6	<1	6	3
November	<1	0	17	2
December	0	0	23	3

How often, not how much — every day in LANCASTER FAIRFIELD 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%	26%	7%	28%	-0.1–7.0°C
February	1%	29%	7%	31%	1.1–9.2°C
March	10%	30%	10%	38%	8.2–15.2°C
April	29%	34%	13%	42%	15.8–20.5°C
May	52%	35%	11%	47%	21.0–26.1°C
June	67%	32%	12%	38%	26.5–29.0°C
July	69%	31%	11%	36%	27.6–31.4°C
August	75%	25%	9%	29%	27.1–30.3°C
September	71%	24%	9%	25%	23.4–28.2°C
October	38%	26%	8%	29%	17.0–21.1°C
November	9%	25%	8%	26%	8.3–14.8°C
December	<1%	28%	8%	32%	3.4–9.8°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 28-year average. Warmest: 2024. Coolest: 1997.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4505716
NOAA station: USW00053844 · LANCASTER FAIRFIELD CO AP
Station distance: 11.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 39.85°, 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 LANCASTER FAIRFIELD CO AP is what differs

Lithopolis→Amanda→Thurston→Carroll→Cedar Hill→Dumontville→

Or put two places side by side: Baltimore vs Lithopolis

Best time to visitBaltimore.