Castle Island Weather Forecast
- 70
- 86
Mostly Cloudy
- 66
- 89
Chance Rain Showers
- 64
- 82
Mostly Sunny
- 70
- 85
Partly Sunny
- 74
- 90
Mostly Sunny
- 74
- 93
Slight Chance Rain Showers
- 70
- 85
Chance Thunderstorms
Today 2 Jul Suffolk
Mostly cloudy. Near steady temperature in the mid 80s. Southwest Winds 10 to 15 Mph.
Tonight 2 Jul Suffolk
Partly cloudy. Lows in the upper 60s. Southwest Winds 10 to 15 Mph.
Castle Island Temperature Statistics
July Temperature
Boston, Logan International Airport (1.2 miles)
Lowest
–Average July
–Highest
–
Climate (2020–Present)
Boston, Logan International Airport (1.2 miles)
Average Low 2020–2025
47 °FAverage 2020–2025
53.8 °FAverage High 2020–2025
61.1 °F