Weather in Union, NH
Updated 2026-09-26 13:30 local time · ZIP codes 03887
Light drizzle
No government weather alerts were returned for this location at the latest update.
Next hours
55°67% rain53°62% rain
54°33% rain
55°55% rain55°49% rain55°42% rain
55°31% rain
55°42% rain
55°78% rain
53°88% rain53°78% rain53°80% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance reaches about 88% over the next 12 hours.
It feels like 49°F with winds near 12 mph.
54°F, 33% rain chance and 13 mph wind.
Visibility is around 1 mi; gusts may reach 38 mph.
Current temperature is 55°F, wind 12 mph, rain chance up to 88%.
UV index is 0.
Local weather characteristics in Union
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.
Union is part of the Northeast weather region. The forecast point is near 43.49°N latitude and 71.02°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.
Union weather today
Light drizzle and 55°F in Union, NH. Today's high is 58°F with a 87% rain chance. Winds are around 12 mph with gusts near 30 mph. Relative humidity is 84%, pressure is 30.00 inHg, and visibility is about 1 miles.
Tonight and tomorrow in Union
Sunrise is at 06:36 AM and sunset is at 06:34 PM. Tomorrow's forecast calls for Light rain shower with a high near 53°F and a low near 51°F. The maximum rain chance is 94%.