NOAA NCEI Climate Normals 1991–2020

Maryland Weather by Month

Temperature, rain and the hurricane season at 30 Maryland stations, month by month.

Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated October 26, 2026

The median station records 46.5 inches of precipitation a year; Oakland 1 SE, MD records the most, 50.7 inches, and Hagerstown Washington Co Airport, MD the least, 35.6 (1.4 times as much). July is the hottest month at the median station (average high 87°F); the hottest July is at Md Sci Ctr Baltimore, MD, 90°F. January is the coldest (average low 25°F); the coldest January nights are at Oakland 1 SE, MD, 18°F. Highs reach 90°F on 30 days a year at the median station and on 47 at Natl Arboretum Dc, MD, the most. Snowfall is heaviest at Oakland 1 SE, MD, 104.9 inches a year.

This page compares the 1991–2020 NOAA climate normals of 30 Maryland weather stations, each the nearest station with full normals to at least one of the 239 Maryland cities on this site that have one within 25 miles.

At the median station, July is the wettest month (4.5 inches) and February the driest (2.9). Station by station, the wettest month is September at 12, July at 6 and May at 5 of the 30, and the driest February at 25, November at 4 and January at 1. The gap between the wettest and driest station is widest in August: 2.4 inches.

Month by month across Maryland

Maryland climate normals by month: median of 30 stations and the station at each extreme
Month	High °F	Low °F	Precip. in	Hottest days	Coldest nights	Wettest	Driest
Jan	43	25	3.3	Snow Hill 4 N, MD49°	Oakland 1 SE, MD18°	Oakland 1 SE, MD3.9"	Hagerstown Washington Co Airport, MD2.5"
Feb	46	27	2.9	Snow Hill 4 N, MD51°	Oakland 1 SE, MD20°	Oakland 1 SE, MD3.6"	Hagerstown Washington Co Airport, MD2.0"
Mar	54	34	4.0	Snow Hill 4 N, MD58°	Frostburg 2, MD26°	Catoctin Mountain Park, MD4.4"	Hagerstown Washington Co Airport, MD3.0"
Apr	66	44	3.5	Snow Hill 4 N, MD69°	Oakland 1 SE, MD37°	Oakland 1 SE, MD4.3"	Ocean City Municipal Airport, MD3.0"
May	74	54	4.0	Snow Hill 4 N, MD78°	Frostburg 2, MD47°	Oakland 1 SE, MD5.3"	Md Sci Ctr Baltimore, MD3.4"
Jun	83	63	4.2	Md Sci Ctr Baltimore, MD85°	Frostburg 2, MD55°	Oakland 1 SE, MD4.9"	Ocean City Municipal Airport, MD3.3"
Jul	87	68	4.5	Md Sci Ctr Baltimore, MD90°	Frostburg 2, MD59°	Dalecarlia Rsvr, MD5.1"	Hagerstown Washington Co Airport, MD2.9"
Aug	85	66	4.1	Natl Arboretum Dc, MD88°	Frostburg 2, MD58°	Salisbury Wicomico Regional Airport, MD5.3"	Frederick Police Brks, MD2.9"
Sep	79	59	4.5	Snow Hill 4 N, MD82°	Oakland 1 SE, MD51°	Frederick Police Brks, MD5.8"	Cumberland 2, MD3.6"
Oct	67	47	4.0	Snow Hill 4 N, MD72°	Oakland 1 SE, MD40°	Conowingo Dam, MD4.5"	Cumberland 2, MD2.8"
Nov	56	37	3.2	Snow Hill 4 N, MD61°	Oakland 1 SE, MD30°	Catoctin Mountain Park, MD3.7"	Savage Rvr Dam, MD2.4"
Dec	47	30	3.7	Snow Hill 4 N, MD52°	Oakland 1 SE, MD24°	Oakland 1 SE, MD4.3"	Hagerstown Washington Co Airport, MD2.8"

High, low and precipitation are the median of the 30 stations; the station columns name the station with the highest average high, the lowest average low, and the most and least precipitation that month, each linked to the city page it serves. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Hurricane season in Maryland

June to November, the hurricane season months, bring 53% of the year's precipitation at the median station, from 49% at Frostburg 2, MD to 55% at Conowingo Dam, MD. Since 1851, 101 tropical systems have passed within 75 miles of a Maryland city on this site, 22 of them at hurricane strength at their closest point to one; September has brought the most (42), then October (22). 1 came outside June to November.

Tropical systems near Maryland cities by month since 1851, with median precipitation
Month	Tropical systems	At hurricane strength	Median precip. in
Jan	0	0	3.3
Feb	0	0	2.9
Mar	0	0	4.0
Apr	0	0	3.5
May	1	0	4.0
Jun	7	0	4.2
Jul	6	0	4.5
Aug	21	6	4.1
Sep	42	11	4.5
Oct	22	5	4.0
Nov	2	0	3.2
Dec	0	0	3.7

Tropical systems from NOAA NHC HURDAT2 that passed within 75 miles of a Maryland city on this site, each counted once, in the month of its first such pass; hurricane strength is the track's wind at its closest point to a city.

Coastal water temperature by month

Across 8 NOAA tide stations, the water is warmest in July (median 83°F, up to 85°F at Annapolis, MD) and coolest in January (median 40°F, down to 38°F at Chesapeake City, MD). The median station averages 80°F or warmer in July and August.

Average water temperature by month at NOAA tide stations in Maryland, 2021–2025
Station	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Chesapeake City, MD	38	39	46	57	67	76	84	82	76	65	53	42
Baltimore, MD	41	40	46	56	66	75	83	81	77	68	57	45
Tolchester Beach, MD	39	40	47	56	66	76	83	82	76	66	53	43
Annapolis, MD	42	42	50	59	68	78	85	84	78	69	58	47
Cambridge, MD	39	40	48	58	67	76	83	82	76	65	54	43
Ocean City Inlet, MD	42	41	46	53	61	68	72	73	74	66	57	47
Solomons Island, MD	42	41	47	56	66	75	82	82	78	68	58	47
Bishops Head, MD	39	42	50	60	69	78	84	81	75	64	54	43

°F, average of hourly readings 2021–2025; a month counts when at least three years have half their hours on record. Source: NOAA Tides & Currents; the newest readings are preliminary.

Maryland cities and their stations

Maryland city pages with the normals of their nearest station
City	Station	Miles	Hottest month high °F	Coldest month low °F	Year precip. in
Baltimore	Md Sci Ctr Baltimore, MD	2	90	30	44.0
Silver Spring	Beltsville, MD	5	87	25	44.0
Rockville	Rockville 1 NE, MD	2	87	27	41.5
Gaithersburg	Rockville 1 NE, MD	4	87	27	41.5
Laurel	Laurel 3 W, MD	3	89	26	47.5
Bowie	Upper Marlboro 3 NNW, MD	7	88	25	45.1
Hyattsville	Beltsville, MD	4	87	25	44.0
Waldorf	Oxon Hill, MD	13	88	27	47.1
Germantown	Damascus 3 SSW, MD	6	84	25	48.0
Bethesda	Dalecarlia Rsvr, MD	4	88	26	48.3
Westminster	Hanover 4 SW, PA	13	85	21	44.1
Fort Washington	Oxon Hill, MD	3	88	27	47.1
Potomac	Rockville 1 NE, MD	5	87	27	41.5
Catonsville	Md Sci Ctr Baltimore, MD	7	90	30	44.0
Towson	Md Sci Ctr Baltimore, MD	8	90	30	44.0
Lanham	Beltsville, MD	6	87	25	44.0
Landover	Natl Arboretum Dc, MD	4	90	28	45.6
College Park	Beltsville, MD	4	87	25	44.0
Temple Hills	Oxon Hill, MD	4	88	27	47.1
Nottingham	Md Sci Ctr Baltimore, MD	10	90	30	44.0
Windsor Mill	Md Sci Ctr Baltimore, MD	9	90	30	44.0
Capitol Heights	Natl Arboretum Dc, MD	4	90	28	45.6
Pikesville	Md Sci Ctr Baltimore, MD	9	90	30	44.0
Odenton	Baltimore Wash International Airport, MD	6	89	25	45.0
Clinton	Oxon Hill, MD	6	88	27	47.1
District Heights	Natl Arboretum Dc, MD	6	90	28	45.6
Montgomery Village	Rockville 1 NE, MD	6	87	27	41.5
New Carrollton	Natl Arboretum Dc, MD	5	90	28	45.6
Randallstown	Md Sci Ctr Baltimore, MD	12	90	30	44.0
Chevy Chase	Dalecarlia Rsvr, MD	3	88	26	48.3
Oxon Hill	Oxon Hill, MD	<1	88	27	47.1
Greenbelt	Beltsville, MD	3	87	25	44.0
Beltsville	Beltsville, MD	1	87	25	44.0
Suitland	Oxon Hill, MD	5	88	27	47.1
Olney	Rockville 1 NE, MD	6	87	27	41.5
Takoma Park	Beltsville, MD	5	87	25	44.0
Riverdale	Natl Arboretum Dc, MD	4	90	28	45.6
Kensington	Rockville 1 NE, MD	6	87	27	41.5
Derwood	Rockville 1 NE, MD	2	87	27	41.5
Burtonsville	Laurel 3 W, MD	2	89	26	47.5

The 40 largest of 61 Maryland city pages in search. All Maryland cities and their storm history →

How stations are matched to cities and what normals are: methodology · other states by month

Month	Tropical systems	At hurricane strength	Median precip. in
Jan	0	0	3.3
Feb	0	0	2.9
Mar	0	0	4.0
Apr	0	0	3.5
May	1	0	4.0
Jun	7	0	4.2
Jul	6	0	4.5
Aug	21	6	4.1
Sep	42	11	4.5
Oct	22	5	4.0
Nov	2	0	3.2
Dec	0	0	3.7

Month	Tropical systems	At hurricane strength	Median precip. in
Jan	0	0	3.3
Feb	0	0	2.9
Mar	0	0	4.0
Apr	0	0	3.5
May	1	0	4.0
Jun	7	0	4.2
Jul	6	0	4.5
Aug	21	6	4.1
Sep	42	11	4.5
Oct	22	5	4.0
Nov	2	0	3.2
Dec	0	0	3.7

Month	Tropical systems	At hurricane strength	Median precip. in
Jan	0	0	3.3
Feb	0	0	2.9
Mar	0	0	4.0
Apr	0	0	3.5
May	1	0	4.0
Jun	7	0	4.2
Jul	6	0	4.5
Aug	21	6	4.1
Sep	42	11	4.5
Oct	22	5	4.0
Nov	2	0	3.2
Dec	0	0	3.7