Potomac River - Calvert Bay Weather Forecast
- 61
- 69
Rain Showers Likely
- 55
- 71
Partly Sunny
- 54
- 63
Sunny
- 56
- 68
Mostly Sunny
- 58
- 72
Mostly Sunny
- 58
- 71
Partly Sunny
Today 4 Oct St. Marys
Showers likely. Highs in the upper 60s. Northeast Winds 5 to 10 Mph. Chance of rain 70 percent.
Tonight 4 Oct St. Marys
Cloudy. Lows in the upper 50s. North Winds around 5 Mph.
Potomac River - Calvert Bay Temperature Statistics
October Temperature
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (3.1 miles)
Lowest 1 October, 2026
62.1 °FAverage October
72.6 °FHighest 1 October, 2026
87.1 °F
Climate (2021–2026)
St. Inigoes, Webster Field, Naval Electronic Systems Engineering Activity (3.1 miles)
Average Low 2021–2026
51.8 °FAverage 2021–2026
60.3 °FAverage High 2021–2026
68.6 °F