National Weather Service Forecast for: Newton IA
Issued by: National Weather Service Des Moines, IA
Updated: 3:37 am CDT Jun 22, 2026
 
Today

Today: Mostly sunny, with a high near 77. East northeast wind 3 to 5 mph.
Mostly Sunny

 Tonight

Tonight: Mostly clear, with a low around 56. Light south southeast wind.
Mostly Clear

 Tuesday

Tuesday: Increasing clouds, with a high near 78. Calm wind becoming south 5 to 8 mph in the afternoon.
Increasing
Clouds
 Tuesday
Night
Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 61. South wind around 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Partly Cloudy
then Chance
T-storms
 Wednesday

Wednesday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly sunny, with a high near 81. West northwest wind 5 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms
 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 58.
Partly Cloudy

 Thursday

Thursday: Mostly sunny, with a high near 77.
Mostly Sunny

 Thursday
Night
Thursday Night: Mostly clear, with a low around 57.
Mostly Clear

 Friday

Friday: Mostly sunny, with a high near 78.
Mostly Sunny
Hi 77 °F Lo 56 °F Hi 78 °F Lo 61 °F Hi 81 °F Lo 58 °F Hi 77 °F Lo 57 °F Hi 78 °F

 

Today
 
 Mostly sunny, with a high near 77. East northeast wind 3 to 5 mph.
Tonight
 
 Mostly clear, with a low around 56. Light south southeast wind.
Tuesday
 
 Increasing clouds, with a high near 78. Calm wind becoming south 5 to 8 mph in the afternoon.
Tuesday Night
 
 A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 61. South wind around 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
 
 A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly sunny, with a high near 81. West northwest wind 5 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
 Partly cloudy, with a low around 58.
Thursday
 
 Mostly sunny, with a high near 77.
Thursday Night
 
 Mostly clear, with a low around 57.
Friday
 
 Mostly sunny, with a high near 78.
Friday Night
 
 Mostly cloudy, with a low around 61.
Saturday
 
 Mostly sunny, with a high near 83. Breezy.
Saturday Night
 
 A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Sunday
 
 Mostly sunny, with a high near 90. Windy.

 

Forecast from NOAA-NWS for Newton IA.