Station 44042 - Potomac, MD
August 18, 2026 12:36 am EDTLocation: 38.033N 76.335W
Wind Direction: WSW (240°)
Wind Speed: 5.8 knots
Wind Gust: 7.8 knots
Air Temperature: 79.5°F (26.4°C)
Water Temperature: 82.9°F (28.3°C)
Overnight - 77°F
Aug 18, 2026
7 mph W
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 77. West wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Tuesday - 86°F
Aug 18, 2026
5 to 8 mph NW
Mostly Sunny
Mostly sunny, with a high near 86. Northwest wind 5 to 8 mph. New rainfall amounts less than a tenth of an inch possible.
Tuesday Night - 74°F
Aug 18, 2026
6 mph N
Partly Cloudy
Partly cloudy, with a low around 74. North wind around 6 mph.
Wednesday - 86°F
Aug 19, 2026
6 mph NE
Sunny
Sunny, with a high near 86. Northeast wind around 6 mph.
Wednesday Night - 75°F
Aug 19, 2026
6 mph S
Mostly Clear then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2am. Mostly clear, with a low around 75. South wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Thursday - 85°F
Aug 20, 2026
2 to 7 mph S
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Some of the storms could produce heavy rain. Partly sunny, with a high near 85. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 inches possible.
Thursday Night - 73°F
Aug 20, 2026
6 mph SW
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 73. Chance of precipitation is 80%.
Friday - 83°F
Aug 21, 2026
6 mph N
Showers And Thunderstorms Likely
A chance of rain showers before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Friday Night - 72°F
Aug 21, 2026
5 mph E
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 70%.
Saturday - 83°F
Aug 22, 2026
6 mph W
Rain Showers Likely
Rain showers likely before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
Saturday Night - 73°F
Aug 22, 2026
6 mph S
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Sunday - 83°F
Aug 23, 2026
7 mph W
Chance Rain Showers
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Sunday Night - 71°F
Aug 23, 2026
7 mph W
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 71. Chance of precipitation is 50%.
Monday - 83°F
Aug 24, 2026
8 mph NW
Sunny then Slight Chance Rain Showers
A slight chance of rain showers after 2pm. Sunny, with a high near 83.