National Weather Service Forecast for: Swanzey NH
Issued by: National Weather Service Gray/Portland, ME
Updated: 6:01 pm EST Dec 17, 2025
 
Tonight

Tonight: Mostly clear, with a low around 21. Southwest wind around 5 mph becoming calm in the evening.
Mostly Clear

 Thursday

Thursday: Mostly sunny, with a high near 47. Calm wind becoming south around 5 mph.
Mostly Sunny

 Thursday
Night
Thursday Night: Rain, mainly after 1am. Temperature rising to around 49 by 5am. South wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Chance Rain
then Rain
 Friday

Friday: Rain before 5pm, then a chance of snow. High near 56. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Rain then
Rain/Snow
 Friday
Night
Friday Night: A 30 percent chance of snow before 7pm. Mostly cloudy, with a low around 22. West wind around 10 mph, with gusts as high as 20 mph.
Chance Snow
then Partly
Cloudy
 Saturday

Saturday: Mostly sunny, with a high near 35.
Mostly Sunny

 Saturday
Night
Saturday Night: A 30 percent chance of snow after 4am. Cloudy, with a low around 28.
Mostly Cloudy
then Chance
Snow
 Sunday

Sunday: Partly sunny, with a high near 42.
Partly Sunny

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 16.
Partly Cloudy
Lo 21 °F Hi 47 °F Lo 38 °F⇑ Hi 56 °F Lo 22 °F Hi 35 °F Lo 28 °F Hi 42 °F Lo 16 °F

 

Tonight
 
 Mostly clear, with a low around 21. Southwest wind around 5 mph becoming calm in the evening.
Thursday
 
 Mostly sunny, with a high near 47. Calm wind becoming south around 5 mph.
Thursday Night
 
 Rain, mainly after 1am. Temperature rising to around 49 by 5am. South wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
 
 Rain before 5pm, then a chance of snow. High near 56. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Friday Night
 
 A 30 percent chance of snow before 7pm. Mostly cloudy, with a low around 22. West wind around 10 mph, with gusts as high as 20 mph.
Saturday
 
 Mostly sunny, with a high near 35.
Saturday Night
 
 A 30 percent chance of snow after 4am. Cloudy, with a low around 28.
Sunday
 
 Partly sunny, with a high near 42.
Sunday Night
 
 Partly cloudy, with a low around 16.
Monday
 
 Sunny, with a high near 27.
Monday Night
 
 Partly cloudy, with a low around 15.
Tuesday
 
 A 40 percent chance of snow. Mostly cloudy, with a high near 34.
Tuesday Night
 
 A 30 percent chance of snow. Mostly cloudy, with a low around 23.
Wednesday
 
 Mostly sunny, with a high near 35.

 

Forecast from NOAA-NWS for Swanzey NH.