Visit St. Mary's County Maryland

Where the Potomac & the Chesapeake meet

Weather

Here's a bit of climate and weather info to help you plan your next great visit to St. Mary's County, MD.

View current and forecasted weather conditions at Accuweather.com

Average Monthly Weather Conditions

Month Average High Average Low Average Precipitation
Jan 44°F 24°F 3.23 in.
Feb 48°F 26°F 3.19 in.
Mar 57°F 33°F 4.21 in.
Apr 67°F 42°F 3.50 in.
May 74°F 51°F 4.20 in.
Jun 82°F 60°F 4.07 in.
Jul 86°F 65°F 4.31 in.
Aug 84°F 64°F 3.88 in.
Sep 77°F 56°F 4.28 in.
Oct 66°F 45°F 3.70 in.
Nov 58°F 36°F 3.59 in.
Dec 47°F 28°F 3.70 in.

St. Mary's County Division of Tourism
23115 Leonard Hall Dr.
P.O. Box 653
Leonardtown, MD 20650

main1-800-327-9023

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