National Weather Service Forecast for: Mason City IA
Issued by: National Weather Service Des Moines, IA
Updated: 11:46 am CDT Mar 19, 2026
 
This
Afternoon
This Afternoon: Mostly sunny, with a high near 56. Light and variable wind.
Mostly Sunny

 Tonight

Tonight: Mostly clear during the early evening, then becoming mostly cloudy, with a low around 40. South wind 5 to 8 mph becoming west after midnight.
Mostly Cloudy

 Friday

Friday: Mostly sunny, with a high near 63. North northwest wind around 8 mph.
Mostly Sunny

 Friday
Night
Friday Night: Mostly cloudy, with a low around 40. Calm wind becoming south around 5 mph after midnight.
Mostly Cloudy

 Saturday

Saturday: Sunny, with a high near 76. South southwest wind 6 to 11 mph.
Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 44.
Partly Cloudy

 Sunday

Sunday: Mostly cloudy, with a high near 50. Breezy.
Mostly Cloudy
and Breezy

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 25. Blustery.
Partly Cloudy
and Blustery
then Mostly
Clear
 Monday

Monday: Mostly sunny, with a high near 46.
Mostly Sunny
Hi 56 °F Lo 40 °F Hi 63 °F Lo 40 °F Hi 76 °F Lo 44 °F Hi 50 °F Lo 25 °F Hi 46 °F

 

This Afternoon
 
 Mostly sunny, with a high near 56. Light and variable wind.
Tonight
 
 Mostly clear during the early evening, then becoming mostly cloudy, with a low around 40. South wind 5 to 8 mph becoming west after midnight.
Friday
 
 Mostly sunny, with a high near 63. North northwest wind around 8 mph.
Friday Night
 
 Mostly cloudy, with a low around 40. Calm wind becoming south around 5 mph after midnight.
Saturday
 
 Sunny, with a high near 76. South southwest wind 6 to 11 mph.
Saturday Night
 
 Partly cloudy, with a low around 44.
Sunday
 
 Mostly cloudy, with a high near 50. Breezy.
Sunday Night
 
 Partly cloudy, with a low around 25. Blustery.
Monday
 
 Mostly sunny, with a high near 46.
Monday Night
 
 Mostly cloudy, with a low around 33.
Tuesday
 
 Mostly cloudy, with a high near 55.
Tuesday Night
 
 Mostly cloudy, with a low around 36.
Wednesday
 
 Partly sunny, with a high near 63. Breezy.

 

Forecast from NOAA-NWS for Mason City IA.