Weather Forecast for
Johnston, IA

Overnight: Mostly clear, with a low around 48. Southeast wind 3 to 5 mph.

Thursday: Increasing clouds, with a high near 77. Breezy, with a south wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

Thursday Night: A slight chance of showers between 1am and 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 57. Breezy, with a south southeast wind 6 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

Friday: Sunny, with a high near 88. South southeast wind 5 to 8 mph.

Friday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 59. Southeast wind 5 to 7 mph becoming calm in the evening. 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 after 1pm. Mostly sunny, with a high near 84. 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, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.

Sunday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 82. Windy.

Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Windy. Chance of precipitation is 40%.

Monday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 83. Windy. Chance of precipitation is 60%.

Monday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Windy.

Tuesday: A 30 percent chance of showers. Partly sunny, with a high near 70.

Tuesday Night: Partly cloudy, with a low around 50.

Wednesday: Mostly sunny, with a high near 72.

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