National Weather Service Forecast for: Lewiston ID
Issued by: National Weather Service Spokane, WA
Updated: 4:17 am PDT May 26, 2026
 
Today

Today: A 40 percent chance of showers before 11am. Mostly cloudy, with a high near 68. Northwest wind 7 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers then
Mostly Cloudy
 Tonight

Tonight: A 40 percent chance of showers. Mostly cloudy, with a low around 51. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Chance
Showers
 Wednesday

Wednesday: Mostly sunny, with a high near 83. Calm wind becoming northwest around 5 mph in the afternoon.
Mostly Sunny

 Wednesday
Night
Wednesday Night: A 30 percent chance of showers before 11pm. Partly cloudy, with a low around 57. Northwest wind around 6 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers then
Partly Cloudy
 Thursday

Thursday: A chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Light and variable wind. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
Showers
 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms after 11pm. Low around 58. Chance of precipitation is 80%.
Showers then
Chance
Showers
 Friday

Friday: A chance of showers, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Showers
Likely
 Friday
Night
Friday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 53.
Chance
Showers
 Saturday

Saturday: A 30 percent chance of showers before 11am. Partly sunny, with a high near 71.
Chance
Showers then
Partly Sunny
Hi 68 °F Lo 51 °F Hi 83 °F Lo 57 °F Hi 91 °F Lo 58 °F Hi 79 °F Lo 53 °F Hi 71 °F

 

Today
 
 A 40 percent chance of showers before 11am. Mostly cloudy, with a high near 68. Northwest wind 7 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
 
 A 40 percent chance of showers. Mostly cloudy, with a low around 51. West wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
Wednesday
 
 Mostly sunny, with a high near 83. Calm wind becoming northwest around 5 mph in the afternoon.
Wednesday Night
 
 A 30 percent chance of showers before 11pm. Partly cloudy, with a low around 57. Northwest wind around 6 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Thursday
 
 A chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Light and variable wind. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
 
 Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms after 11pm. Low around 58. Chance of precipitation is 80%.
Friday
 
 A chance of showers, then showers likely and possibly a thunderstorm after 11am. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Friday Night
 
 A 50 percent chance of showers. Mostly cloudy, with a low around 53.
Saturday
 
 A 30 percent chance of showers before 11am. Partly sunny, with a high near 71.
Saturday Night
 
 Partly cloudy, with a low around 49.
Sunday
 
 Mostly sunny, with a high near 74.
Sunday Night
 
 Mostly clear, with a low around 49.
Monday
 
 Sunny, with a high near 82.

 

Forecast from NOAA-NWS for Lewiston ID.