National Weather Service Forecast for: Mason City IA
Issued by: National Weather Service Des Moines, IA
Updated: 3:16 am CST Dec 18, 2025
 
Overnight

Overnight: Rain. Steady temperature around 39. South wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Rain


 Thursday

Thursday: Rain likely before 9am, then scattered snow showers after 10am. Mostly cloudy, with a temperature falling to around 13 by 5pm. Wind chill values as low as -10. Windy, with a west northwest wind 14 to 19 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Windy.
Rain/Snow
Likely then
Scattered
Snow Showers
 Thursday
Night
Thursday Night: Isolated snow showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 0. Wind chill values as low as -15. Windy, with a northwest wind 24 to 29 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 20%.
Windy.
Isolated Snow
Showers then
Partly Cloudy
 Friday

Friday: Mostly sunny, with a high near 27. Wind chill values as low as -10. Northwest wind 5 to 14 mph becoming south southeast in the afternoon. Winds could gust as high as 22 mph.
Mostly Sunny


 Friday
Night
Friday Night: Mostly cloudy, with a low around 18. South southeast wind 8 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph.
Mostly Cloudy


 Saturday

Saturday: Mostly sunny, with a high near 32.
Mostly Sunny


 Saturday
Night
Saturday Night: Mostly clear, with a low around 6.
Mostly Clear


 Sunday

Sunday: Sunny, with a high near 25.
Sunny


 Sunday
Night
Sunday Night: Mostly cloudy, with a low around 16.
Mostly Cloudy
Lo 39 °F Hi 37 °F⇓ Lo 0 °F Hi 27 °F Lo 18 °F Hi 32 °F Lo 6 °F Hi 25 °F Lo 16 °F

Wind Advisory
 

Overnight
 
 Rain. Steady temperature around 39. South wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
 
 Rain likely before 9am, then scattered snow showers after 10am. Mostly cloudy, with a temperature falling to around 13 by 5pm. Wind chill values as low as -10. Windy, with a west northwest wind 14 to 19 mph increasing to 24 to 29 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday Night
 
 Isolated snow showers before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 0. Wind chill values as low as -15. Windy, with a northwest wind 24 to 29 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 20%.
Friday
 
 Mostly sunny, with a high near 27. Wind chill values as low as -10. Northwest wind 5 to 14 mph becoming south southeast in the afternoon. Winds could gust as high as 22 mph.
Friday Night
 
 Mostly cloudy, with a low around 18. South southeast wind 8 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph.
Saturday
 
 Mostly sunny, with a high near 32.
Saturday Night
 
 Mostly clear, with a low around 6.
Sunday
 
 Sunny, with a high near 25.
Sunday Night
 
 Mostly cloudy, with a low around 16.
Monday
 
 Partly sunny, with a high near 37.
Monday Night
 
 Partly cloudy, with a low around 28.
Tuesday
 
 Partly sunny, with a high near 36.
Tuesday Night
 
 Mostly cloudy, with a low around 23.
Wednesday
 
 Mostly cloudy, with a high near 36.

 

Forecast from NOAA-NWS for Mason City IA.