National Weather Service Forecast for: Mason City IA
Issued by: National Weather Service Des Moines, IA
Updated: 10:46 pm CST Dec 4, 2025
 
Overnight

Overnight: Partly cloudy, with a steady temperature around 15. Wind chill values as low as zero. South southwest wind 9 to 13 mph, with gusts as high as 23 mph.
Partly Cloudy

 Friday

Friday: A 30 percent chance of snow, mainly before 2pm. Cloudy, with a high near 31. Wind chill values as low as 5. South southwest wind 7 to 10 mph becoming west in the afternoon. Winds could gust as high as 18 mph. Little or no snow accumulation expected.
Chance Snow

 Friday
Night
Friday Night: Cloudy, then gradually becoming partly cloudy, with a low around 12. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.
Decreasing
Clouds
 Saturday

Saturday: A 40 percent chance of snow after noon. Increasing clouds, with a high near 20. Wind chill values as low as 5. Calm wind becoming east southeast 5 to 7 mph in the afternoon. New snow accumulation of less than a half inch possible.
Mostly Sunny
then Chance
Snow
 Saturday
Night
Saturday Night: Snow, mainly before midnight. Low around 5. Northeast wind 6 to 8 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.
Snow then
Chance Snow
 Sunday

Sunday: Partly sunny, with a high near 11.
Partly Sunny

 Sunday
Night
Sunday Night: Mostly cloudy, with a low around -8.
Mostly Cloudy

 Monday

Monday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 25.
Mostly Cloudy
then Slight
Chance Snow
 Monday
Night
Monday Night: Mostly cloudy, with a low around 12.
Mostly Cloudy
Lo 15 °F Hi 31 °F Lo 12 °F Hi 20 °F Lo 5 °F Hi 11 °F Lo -8 °F Hi 25 °F Lo 12 °F

 

Overnight
 
 Partly cloudy, with a steady temperature around 15. Wind chill values as low as zero. South southwest wind 9 to 13 mph, with gusts as high as 23 mph.
Friday
 
 A 30 percent chance of snow, mainly before 2pm. Cloudy, with a high near 31. Wind chill values as low as 5. South southwest wind 7 to 10 mph becoming west in the afternoon. Winds could gust as high as 18 mph. Little or no snow accumulation expected.
Friday Night
 
 Cloudy, then gradually becoming partly cloudy, with a low around 12. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.
Saturday
 
 A 40 percent chance of snow after noon. Increasing clouds, with a high near 20. Wind chill values as low as 5. Calm wind becoming east southeast 5 to 7 mph in the afternoon. New snow accumulation of less than a half inch possible.
Saturday Night
 
 Snow, mainly before midnight. Low around 5. Northeast wind 6 to 8 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.
Sunday
 
 Partly sunny, with a high near 11.
Sunday Night
 
 Mostly cloudy, with a low around -8.
Monday
 
 A 20 percent chance of snow after noon. Mostly cloudy, with a high near 25.
Monday Night
 
 Mostly cloudy, with a low around 12.
Tuesday
 
 Mostly cloudy, with a high near 30.
Tuesday Night
 
 A 50 percent chance of snow. Cloudy, with a low around 17.
Wednesday
 
 A 30 percent chance of snow. Mostly cloudy, with a high near 26.
Wednesday Night
 
 Mostly cloudy, with a low around 3.
Thursday
 
 Partly sunny, with a high near 19.

 

Forecast from NOAA-NWS for Mason City IA.