Chesapeake Bay - Chesapeake Bay Basin Weather Forecast
- 74
- 88
Rain Showers
- 71
- 77
Chance Rain Showers
- 70
- 80
Mostly Sunny
- 70
- 80
Partly Sunny
- 71
- 81
Partly Sunny
- 74
- 82
Mostly Cloudy
Today 31 Jul St. Marys
Sunny late this Morning, then becoming partly sunny. A slight chance of Showers and Thunderstorms late this Morning, then a chance of Showers and Thunderstorms this afternoon. Some Thunderstorms may produce heavy rainfall this afternoon. Highs in the lower 90s. South Winds 5 to 10 Mph. Chance of rain 50 percent.
Tonight 31 Jul St. Marys
Mostly cloudy. Showers and Thunderstorms likely in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall. Locally heavy rainfall possible in the evening. Lows in the lower 70s. East Winds 5 to 10 Mph, becoming north after midnight. Chance of rain 70 percent.
Chesapeake Bay - Chesapeake Bay Basin Temperature Statistics
July Temperature
Patuxent River, Naval Air Station (1.2 miles)
Lowest 24 July, 2025
67.6 °FAverage July
83 °FHighest 1 July, 2025
97.6 °F
Climate (2020–Present)
Patuxent River, Naval Air Station (1.2 miles)
Average Low 2020–2025
53.1 °FAverage 2020–2025
61.4 °FAverage High 2020–2025
69.5 °F