Sumac Island Weather Forecast
- 71
- 85
Increasing Clouds
- 72
- 84
Chance Thunderstorms
- 70
- 84
Thunderstorms Likely
- 69
- 82
Chance Thunderstorms
- 68
- 77
Chance Rain Showers
- 67
- 78
Slight Chance Thunderstorms
Today 6 Jul Southern New Haven
Mostly sunny. Highs in the upper 80s. Southwest Winds 10 to 15 Mph.
Tonight 6 Jul Southern New Haven
Mostly cloudy. Near steady temperature in the upper 60s. Southwest Winds around 5 Mph.
Sumac Island Temperature Statistics
July Temperature
New Haven, Tweed-New Haven Airport (3.7 miles)
Lowest 3 July, 2025
66.9 °FAverage July
77.4 °FHighest 3 July, 2025
89.1 °F
Climate (2020–Present)
New Haven, Tweed-New Haven Airport (3.7 miles)
Average Low 2020–2025
47.7 °FAverage 2020–2025
55.8 °FAverage High 2020–2025
63.7 °F