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 - 78°F
Aug 18, 2026
7 mph W
Isolated Showers And Thunderstorms
Isolated showers and thunderstorms before 2am. Mostly cloudy, with a low around 78. West wind around 7 mph. Chance of precipitation is 20%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday - 85°F
Aug 18, 2026
9 mph N
Patchy Fog then Isolated Showers And Thunderstorms
Patchy fog between 7am and 8am, then isolated showers and thunderstorms. Mostly sunny, with a high near 85. North wind around 9 mph. Chance of precipitation is 20%.
Tuesday Night - 79°F
Aug 18, 2026
5 to 8 mph N
Isolated Showers And Thunderstorms then Mostly Clear
Isolated showers and thunderstorms before 8pm. Mostly clear, with a low around 79. North wind 5 to 8 mph. Chance of precipitation is 20%.
Wednesday - 86°F
Aug 19, 2026
3 to 7 mph N
Sunny
Sunny, with a high near 86. North wind 3 to 7 mph.
Wednesday Night - 79°F
Aug 19, 2026
6 to 10 mph S
Mostly Clear then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 2am. Mostly clear, with a low around 79. South wind 6 to 10 mph. Chance of precipitation is 20%.
Thursday - 86°F
Aug 20, 2026
5 to 9 mph S
Showers And Thunderstorms
Showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 80%.
Thursday Night - 76°F
Aug 20, 2026
9 mph S
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy, with a low around 76. Chance of precipitation is 80%.
Friday - 83°F
Aug 21, 2026
9 mph N
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Friday Night - 76°F
Aug 21, 2026
8 mph E
Chance Showers And Thunderstorms then Showers And Thunderstorms
A chance of showers and thunderstorms before 8pm, then showers and thunderstorms. Mostly cloudy, with a low around 76. Chance of precipitation is 80%.
Saturday - 82°F
Aug 22, 2026
5 to 8 mph SE
Rain Showers
Rain showers before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 82. Chance of precipitation is 80%.
Saturday Night - 75°F
Aug 22, 2026
9 mph S
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a low around 75. Chance of precipitation is 70%.
Sunday - 84°F
Aug 23, 2026
9 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 84. Chance of precipitation is 30%.
Sunday Night - 74°F
Aug 23, 2026
9 to 13 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 74. Chance of precipitation is 30%.
Monday - 82°F
Aug 24, 2026
7 to 13 mph NW
Sunny
Sunny, with a high near 82.