Weather in Alton Bay, NH
Updated 2026-08-11 12:15 local time · ZIP codes 03810
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
75°3% rain
84°2% rain84°1% rain83°1% rain82°1% rain81°1% rain79°1% rain79°1% rain
71°2% rain68°2% rain67°3% rain65°4% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 4%).
It feels like 77°F with winds near 11 mph.
71°F, 2% rain chance and 3 mph wind.
Visibility is around 10 mi; gusts may reach 15 mph.
Current temperature is 75°F, wind 11 mph, rain chance up to 4%.
UV index is 7. Sunscreen, shade and protective clothing are recommended.
Alton Bay weather today
Overcast and 75°F in Alton Bay, NH. Today's high is 84°F with a 4% rain chance. Winds are around 11 mph with gusts near 13 mph. Relative humidity is 65%, pressure is 29.81 inHg, and visibility is about 10 miles.
Tonight and tomorrow in Alton Bay
Sunrise is at 05:45 AM and sunset is at 07:54 PM. Tomorrow's forecast calls for Sunny with a high near 81°F and a low near 56°F. The maximum rain chance is 17%.