National Weather Service Forecast for: Bow NH
Issued by: National Weather Service Gray/Portland, ME
Updated: 2:25 am EDT Aug 20, 2026
 
Today

Today: Increasing clouds, with a high near 82. Calm wind becoming northwest around 5 mph in the afternoon.
Increasing
Clouds

 Tonight

Tonight: A 30 percent chance of showers, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 55. West wind around 5 mph becoming calm. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers then
Partly Cloudy
 Friday

Friday: Mostly sunny, with a high near 79. North wind around 5 mph becoming east in the afternoon.
Mostly Sunny

 Friday
Night
Friday Night: A 30 percent chance of showers after 3am. Increasing clouds, with a low around 56. East wind around 5 mph becoming calm in the evening.
Partly Cloudy
then Chance
Showers
 Saturday

Saturday: Showers likely, mainly after noon. Mostly cloudy, with a high near 70. East wind 5 to 10 mph. Chance of precipitation is 60%.
Showers
Likely

 Saturday
Night
Saturday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Showers
Likely

 Sunday

Sunday: Showers likely, mainly after 5pm. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Mostly Cloudy
then Showers
Likely
 Sunday
Night
Sunday Night: Showers likely, mainly before 7pm. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Showers
Likely then
Chance
Showers
 Monday

Monday: Mostly sunny, with a high near 79.
Mostly Sunny
Hi 82 °F Lo 55 °F Hi 79 °F Lo 56 °F Hi 70 °F Lo 57 °F Hi 78 °F Lo 58 °F Hi 79 °F

 

Today
 
 Increasing clouds, with a high near 82. Calm wind becoming northwest around 5 mph in the afternoon.
Tonight
 
 A 30 percent chance of showers, mainly before 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 55. West wind around 5 mph becoming calm. New precipitation amounts of less than a tenth of an inch possible.
Friday
 
 Mostly sunny, with a high near 79. North wind around 5 mph becoming east in the afternoon.
Friday Night
 
 A 30 percent chance of showers after 3am. Increasing clouds, with a low around 56. East wind around 5 mph becoming calm in the evening.
Saturday
 
 Showers likely, mainly after noon. Mostly cloudy, with a high near 70. East wind 5 to 10 mph. Chance of precipitation is 60%.
Saturday Night
 
 Showers likely, mainly before 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Sunday
 
 Showers likely, mainly after 5pm. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Sunday Night
 
 Showers likely, mainly before 7pm. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Monday
 
 Mostly sunny, with a high near 79.
Monday Night
 
 Mostly clear, with a low around 54.
Tuesday
 
 Sunny, with a high near 77.
Tuesday Night
 
 Mostly clear, with a low around 54.
Wednesday
 
 Sunny, with a high near 80.

 

Forecast from NOAA-NWS for Bow NH.