Chesapeake Bay - James Island Weather Forecast
- 77
- 85
Rain Showers
- 78
- 83
Rain Showers
- 74
- 87
Chance Thunderstorms
- 71
- 81
Slight Chance Rain Showers
- 74
- 80
Slight Chance Thunderstorms
- 76
- 81
Slight Chance Thunderstorms
Today 18 Jul Dorchester
Partly sunny. A slight chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. North Winds 5 to 10 Mph, becoming northwest this afternoon. Chance of rain 20 percent.
Tonight 18 Jul Dorchester
Mostly cloudy in the Evening, then becoming partly cloudy. A chance of Showers and Thunderstorms. Lows in the lower 70s. South Winds around 5 Mph. Chance of rain 40 percent.
Chesapeake Bay - James Island Temperature Statistics
July Temperature
Cambridge-Dorchester Airport (16.2 miles)
Lowest 5 July, 2025
64.4 °FAverage July
79.1 °FHighest 8 July, 2025
93.2 °F
Climate (2020–Present)
Cambridge-Dorchester Airport (16.2 miles)
Average Low 2020–2025
49.5 °FAverage 2020–2025
58.4 °FAverage High 2020–2025
66.9 °F