South River, MD

Unincorporated community in Anne Arundel County, Maryland

South River is a small unincorporated community in Anne Arundel County, Maryland. It is 2.6 miles E of Mayo, the nearest town. Its ZIP code is 21037.

South River at a glance

State
Maryland
County
Anne Arundel County
ZIP code
21037
Nearest town
Mayo (2.6 mi)
Time zone
America/New York
Coordinates
38.9031, -76.5608

Weather in South River now

Loading the National Weather Service forecast…

South River weather by the hour

South River weather for the next 7 days

Source: National Weather Service (NOAA) · forecast for the coordinates of South River.

This week in South River

Sunrise, sunset and moon in South River

What is the weather usually like in South River?

Cfa
Humid subtropical climate
Köppen climate classification, calculated from the 1991–2020 normals

Average high and low temperature (°F)

24°42°59°77°94°44°29°Jan48°31°Feb55°38°Mar68°48°Apr77°57°May85°67°Jun89°71°Jul86°70°Aug80°65°Sep69°52°Oct58°41°Nov48°34°Dec

Average precipitation (inches)

3.2"Jan2.8"Feb4.0"Mar3.1"Apr4.6"May4.1"Jun4.6"Jul3.9"Aug4.1"Sep4.3"Oct3.3"Nov3.8"Dec

Best time to visit South River: May–June and September–October, with mild temperatures and fewer rainy days.

Source: NOAA NCEI U.S. Climate Normals 1991–2020, station ANNAPOLIS POLICE BRKS, MD US (USC00180193), adjusted for the elevation of South River.

South River weather month by month

January
44° 29°F
3.2 in of rain
February
48° 31°F
2.8 in of rain
March
55° 38°F
4.0 in of rain
April
68° 48°F
3.1 in of rain
May
77° 57°F
4.6 in of rain
June
85° 67°F
4.1 in of rain
July
89° 71°F
4.6 in of rain
August
86° 70°F
3.9 in of rain
September
80° 65°F
4.1 in of rain
October
69° 52°F
4.3 in of rain
November
58° 41°F
3.3 in of rain
December
48° 34°F
3.8 in of rain

Sunrise and sunset in South River through the year

MonthSunriseSunsetDaylight
January7:21 AM5:09 PM9 h 48 min
February6:55 AM5:44 PM10 h 49 min
March7:15 AM7:14 PM11 h 58 min
April6:27 AM7:44 PM13 h 16 min
May5:51 AM8:13 PM14 h 21 min
June5:38 AM8:34 PM14 h 56 min
July5:51 AM8:32 PM14 h 40 min
August6:18 AM8:02 PM13 h 43 min
September6:46 AM7:16 PM12 h 29 min
October7:14 AM6:29 PM11 h 14 min
November6:47 AM4:53 PM10 h 6 min
December7:16 AM4:46 PM9 h 30 min

Times for the 15th of each month, local time (America/New York).

What is the weather like in South River?

South River has a humid subtropical climate. The warmest month is July, with an average high of 89°F (32°C), and the coldest is January, with average lows of 29°F (-2°C).

It gets about 45.7 inches (1,160 mm) of precipitation a year. The wettest month is July and the driest is February.

The best time to visit South River is May–June and September–October. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.

Webcams near South River

The closest live webcam is Crofton › East, 6.2 miles NW of South River.

Crofton › EastCrofton · 6.2 mi NWOn Windy
Annapolis › East: Eastport Yacht ClubAnnapolis · 6.6 mi NEOn Windy
Deale › South: Herrington Harbour North - Town Point MarinaDeale · 8.9 mi SOn Windy
Highland Beach › West: William Preston Lane Jr. Memorial Bay BridgeHighland Beach · 13.5 mi EOn Windy
LaurelLaurel · 20.5 mi NWOn Windy
Baltimore: Northeast ViewBaltimore · 21.1 mi NOn Windy
Baltimore: Northwest ViewBaltimore · 21.2 mi NOn Windy
Washington: Recreation Department - Chuck Brown Memorial ParkWashington · 22.4 mi WOn Windy
Washington: US CapitolWashington · 24.0 mi WOn Windy

Webcams: Windy.com. Distances in a straight line from South River.

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Map of South River, MD

Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.

South River Street View

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Towns near South River

Other communities near South River

Questions about South River

Where is South River, MD?

South River is an unincorporated community in Anne Arundel County, Maryland, 2.6 miles E of Mayo.

What county is South River in?

South River is in Anne Arundel County, Maryland.

What is the ZIP code of South River, MD?

The ZIP code for South River is 21037.

What is the nearest town to South River?

Mayo, 2.6 miles away.

Are there webcams near South River?

Yes. The closest is Crofton › East, 6.2 miles away.

What is the hottest month in South River?

July, with an average high of 89°F (32°C).

What is the coldest month in South River?

January, with an average low of 29°F (-2°C).

How much does it rain in South River?

About 45.7 inches (1,160 mm) a year; the wettest month is July.

Does it snow in South River?

Snow is very rare or not recorded at the nearest weather station.

When is the best time to visit South River?

May–June and September–October, when temperatures are most pleasant and rainy days are fewer.

What climate does South River have?

Humid subtropical (Köppen Cfa).

Last updated: