National Weather Service Forecast for: Oskaloosa IA
Issued by: National Weather Service Des Moines, IA
Updated: 6:57 am CDT May 29, 2026
 
Today

Today: Mostly cloudy, with a high near 84. East southeast wind around 9 mph.
Mostly Cloudy

 Tonight

Tonight: A slight chance of showers between 11pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. East wind 5 to 7 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers

 Saturday

Saturday: A 40 percent chance of showers and thunderstorms, mainly before 9am. Mostly cloudy, with a high near 79. East southeast wind 8 to 14 mph, with gusts as high as 23 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Slight Chance
T-storms
 Saturday
Night
Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. East wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Slight Chance
T-storms then
Chance
Showers
 Sunday

Sunday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Southeast wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Chance
T-storms
 Sunday
Night
Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Showers
Likely
 Monday

Monday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Slight Chance
T-storms

 Monday
Night
Monday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 61.
Partly Cloudy
then Slight
Chance
Showers
 Tuesday

Tuesday: Mostly sunny, with a high near 84.
Mostly Sunny
Hi 84 °F Lo 64 °F Hi 79 °F Lo 61 °F Hi 81 °F Lo 63 °F Hi 85 °F Lo 61 °F Hi 84 °F

Hazardous Weather Outlook
 

Today
 
 Mostly cloudy, with a high near 84. East southeast wind around 9 mph.
Tonight
 
 A slight chance of showers between 11pm and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. East wind 5 to 7 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
 
 A 40 percent chance of showers and thunderstorms, mainly before 9am. Mostly cloudy, with a high near 79. East southeast wind 8 to 14 mph, with gusts as high as 23 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. East wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
 
 A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. Southeast wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Monday Night
 
 A 20 percent chance of showers after 1am. Partly cloudy, with a low around 61.
Tuesday
 
 Mostly sunny, with a high near 84.
Tuesday Night
 
 Partly cloudy, with a low around 58.
Wednesday
 
 Mostly sunny, with a high near 84.
Wednesday Night
 
 Partly cloudy, with a low around 60.
Thursday
 
 Mostly sunny, with a high near 86.

 

Forecast from NOAA-NWS for Oskaloosa IA.