50401 Weather (Mason City, IA)

Weather forecast for: Mason City IA

Last Update: 2:21 am CDT Oct 31, 2026

Overnight: A 30 percent chance of showers and thunderstorms. Cloudy, with a low around 48. Southeast wind 3 to 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday: A chance of showers and thunderstorms. Cloudy, with a high near 60. South wind 6 to 8 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night: A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 49. South southeast wind 3 to 5 mph.

Sunday: Partly sunny, with a high near 64. South southeast wind 3 to 7 mph.

Sunday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 52. Southeast wind around 7 mph. New precipitation amounts of less than a tenth of an inch possible.

Monday: Showers. High near 65. Breezy. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Monday Night: Showers and possibly a thunderstorm before 10pm, then showers between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Low around 55. Chance of precipitation is 90%.

Tuesday: Showers, with thunderstorms also possible after 1pm. High near 63. Chance of precipitation is 80%.

Tuesday Night: A 50 percent chance of showers before 1am. Mostly cloudy, with a low around 42.

Wednesday: A 30 percent chance of showers. Mostly sunny, with a high near 58.

Wednesday Night: Partly cloudy, with a low around 41.

Thursday: Partly sunny, with a high near 58.

Thursday Night: Mostly cloudy, with a low around 40.

Friday: Partly sunny, with a high near 55.