50158 Weather (Marshalltown, IA)

Weather forecast for: Marshalltown IA

Last Update: 1:26 pm CDT Sep 19, 2026

This Afternoon: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. South wind around 7 mph becoming west. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. North wind 7 to 9 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday: A chance of showers or drizzle before 7am, then a chance of drizzle after 3pm. Cloudy, with a high near 65. Northeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Sunday Night: A chance of drizzle, mainly before 10pm, then a chance of showers after midnight. Cloudy, with a low around 54. East northeast wind 9 to 11 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Monday: Showers. High near 60. Northeast wind around 10 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Monday Night: A 40 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 50. New precipitation amounts of less than a tenth of an inch possible.

Tuesday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 61.

Tuesday Night: Partly cloudy, with a low around 47.

Wednesday: Mostly sunny, with a high near 64.

Wednesday Night: Partly cloudy, with a low around 51.

Thursday: Mostly cloudy, with a high near 67.

Thursday Night: Mostly cloudy, with a low around 55.

Friday: Mostly cloudy, with a high near 69.