Weather in Alton Bay, NH
Updated 2026-09-26 10:00 local time · ZIP codes 03810
Patchy rain nearby
No government weather alerts were returned for this location at the latest update.
Next hours
56°17% rain55°18% rain56°19% rain
55°40% rain54°51% rain53°72% rain55°68% rain
55°68% rain55°35% rain
53°31% rain
53°56% rain54°43% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance reaches about 72% over the next 12 hours.
It feels like 49°F with winds near 11 mph.
56°F, 17% rain chance and 11 mph wind.
Visibility is around 6 mi; gusts may reach 39 mph.
Current temperature is 56°F, wind 11 mph, rain chance up to 72%.
UV index is 1.
Local weather characteristics in Alton Bay
New Hampshire has four distinct seasons, cold snowy winters and mild to warm summers. Mountain weather can be much colder and windier than nearby valleys.
Alton Bay is part of the Northeast weather region. The forecast point is near 43.47°N latitude and 71.23°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Alton Bay weather today
Patchy rain nearby and 56°F in Alton Bay, NH. Today's high is 56°F with a 85% rain chance. Winds are around 11 mph with gusts near 28 mph. Relative humidity is 64%, pressure is 30.05 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Alton Bay
Sunrise is at 06:36 AM and sunset is at 06:35 PM. Tomorrow's forecast calls for Light rain shower with a high near 52°F and a low near 49°F. The maximum rain chance is 94%.