National Weather Service Forecast for: Nampa ID
Issued by: National Weather Service Boise, ID
Updated: 2:04 am MST Dec 17, 2025
 
Overnight

Overnight: Rain.  Low around 45. Southeast wind around 11 mph, with gusts as high as 21 mph.  Chance of precipitation is 90%.
Rain

Wednesday

Wednesday: Rain before 11am.  Temperature falling to around 45 by 5pm. Breezy, with a west northwest wind 17 to 22 mph becoming northwest 11 to 16 mph in the afternoon. Winds could gust as high as 44 mph.  Chance of precipitation is 80%.
Breezy. Rain
then Mostly
Sunny
Wednesday
Night
Wednesday Night: Increasing clouds, with a low around 31. Calm wind becoming southeast 5 to 7 mph after midnight.
Increasing
Clouds

Thursday

Thursday: Snow before 11am, then rain and snow between 11am and 2pm, then rain after 2pm.  High near 46. Southeast wind 8 to 13 mph.  Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Rain/Snow

Thursday
Night
Thursday Night: A 50 percent chance of rain.  Cloudy, with a low around 42. Southeast wind 8 to 11 mph, with gusts as high as 20 mph.
Chance Rain

Friday

Friday: Rain.  High near 55. Chance of precipitation is 80%.
Rain

Friday
Night
Friday Night: Rain likely before 11pm, then a chance of rain and snow.  Mostly cloudy, with a low around 33. Chance of precipitation is 70%. Little or no snow accumulation expected.
Rain/Snow
Likely then
Chance
Rain/Snow
Saturday

Saturday: A slight chance of rain and snow before 11am.  Partly sunny, with a high near 46. Chance of precipitation is 20%.
Slight Chance
Rain/Snow
then Partly
Sunny
Saturday
Night
Saturday Night: A 30 percent chance of rain, mainly after 11pm.  Mostly cloudy, with a low around 34.
Chance Rain

Lo 45 °F Hi 55 °F Lo 31 °F Hi 46 °F Lo 42 °F Hi 55 °F Lo 33 °F Hi 46 °F Lo 34 °F

Wind Advisory
 

Overnight
 
Rain. Low around 45. Southeast wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Wednesday
 
Rain before 11am. Temperature falling to around 45 by 5pm. Breezy, with a west northwest wind 17 to 22 mph becoming northwest 11 to 16 mph in the afternoon. Winds could gust as high as 44 mph. Chance of precipitation is 80%.
Wednesday Night
 
Increasing clouds, with a low around 31. Calm wind becoming southeast 5 to 7 mph after midnight.
Thursday
 
Snow before 11am, then rain and snow between 11am and 2pm, then rain after 2pm. High near 46. Southeast wind 8 to 13 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Thursday Night
 
A 50 percent chance of rain. Cloudy, with a low around 42. Southeast wind 8 to 11 mph, with gusts as high as 20 mph.
Friday
 
Rain. High near 55. Chance of precipitation is 80%.
Friday Night
 
Rain likely before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 70%. Little or no snow accumulation expected.
Saturday
 
A slight chance of rain and snow before 11am. Partly sunny, with a high near 46. Chance of precipitation is 20%.
Saturday Night
 
A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 34.
Sunday
 
Rain likely, mainly after 11am. Mostly cloudy, with a high near 49. Chance of precipitation is 60%.
Sunday Night
 
Rain likely. Mostly cloudy, with a low around 39. Chance of precipitation is 60%.
Monday
 
A 50 percent chance of rain. Mostly cloudy, with a high near 53.
Monday Night
 
A 30 percent chance of rain. Mostly cloudy, with a low around 37.
Tuesday
 
A 30 percent chance of rain. Mostly cloudy, with a high near 50.

 

Forecast from NOAA-NWS for Nampa ID.