Johnston, Iowa | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Clear
    44°
    Tuesday 4/23
    Forecast night icon
    44°
    Clear
    Hourly
    Night Details
    Clear. Lows in the upper 30s. Northwest winds 15 to 20 mph with gusts up to 35 mph becoming north 5 to 10 mph after midnight.
  • Forecast day icon
    Wednesday
    Sunny
    62°
    Forecast night icon
    Night
    Partly Cloudy
    48°
    Wednesday 4/24
    Day
    62°
    Sunny
    Forecast day icon
    Night
    48°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the mid 60s. East winds 5 to 10 mph.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 40s. Southeast winds 5 to 10 mph.
  • Forecast day icon
    Thursday
    Partly Sunny
    65°
    Forecast night icon
    Night
    Thunderstorms
    51°
    Thursday 4/25
    Day
    65°
    Partly Sunny
    Forecast day icon
    Night
    51°
    Thunderstorms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. Highs in the upper 60s. Southeast winds 15 to 20 mph with gusts up to 30 mph.
    Night Details
    A chance of showers in the evening then showers with a chance of thunderstorms after midnight. Breezy with lows in the lower 50s. Southeast winds 20 to 25 mph with gusts up to 40 mph. Chance of rain near 100 percent.
  • Forecast day icon
    Friday
    Thunderstorms
    68°
    Forecast night icon
    Night
    70% Chance of Storms
    63°
    Friday 4/26
    Day
    68°
    Thunderstorms
    Forecast day icon
    Night
    63°
    70% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Showers. A chance of thunderstorms in the morning then thunderstorms likely in the afternoon. Windy with highs in the upper 60s. Chance of rain near 100 percent.
    Night Details
    Showers and thunderstorms likely in the evening. Windy with lows in the upper 50s. Chance of rain 70 percent.
  • Forecast day icon
    Saturday
    50% Chance of Storms
    76°
    Forecast night icon
    Night
    Thunderstorms
    63°
    Saturday 4/27
    Day
    76°
    50% Chance of Storms
    Forecast day icon
    Night
    63°
    Thunderstorms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 50 percent.
    Night Details
    A chance of thunderstorms. Showers. Lows in the mid 50s. Chance of rain 90 percent.
  • Forecast day icon
    Sunday
    Thunderstorms
    70°
    Forecast night icon
    Night
    40% Chance of Storms
    50°
    Sunday 4/28
    Day
    70°
    Thunderstorms
    Forecast day icon
    Night
    50°
    40% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    A chance of thunderstorms. Showers. Highs around 70. Chance of rain 90 percent.
    Night Details
    Mostly cloudy. A chance of showers and thunderstorms in the evening. Lows in the mid 40s. Chance of rain 40 percent.
  • Forecast day icon
    Monday
    Partly Sunny
    61°
    Forecast night icon
    Night
    Partly Cloudy
    48°
    Monday 4/29
    Day
    61°
    Partly Sunny
    Forecast day icon
    Night
    48°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. Highs around 60.
    Night Details
    Partly cloudy in the evening then clearing. Lows in the lower 40s.
  • Forecast day icon
    Tuesday
    Sunny
    73°
    Forecast night icon
    Night
    40% Chance of Rain
    58°
    Tuesday 4/30
    Day
    73°
    Sunny
    Forecast day icon
    Night
    58°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Sunny. Highs in the lower 70s.
    Night Details
    Clear with a chance of rain. Chance of precipitation 35%. Low temperature around 58F. Dew point will be around 52F with an average humidity of 67%. Winds will be 7 mph from the S.
  • Forecast day icon
    Wednesday
    30% Chance of Rain
    75°
    Forecast night icon
    Night
    40% Chance of Rain
    60°
    Wednesday 5/1
    Day
    75°
    30% Chance of Rain
    Forecast day icon
    Night
    60°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny with a 35% chance for rain and thunderstorms. High temperature around 75F. Dew point will be around 56F with an average humidity of 65%. Winds will be 9 mph from the S.
    Night Details
    Partly cloudy with a 40% chance for rain and thunderstorms. Low temperature around 60F. Dew point will be around 55F with an average humidity of 66%. Winds will be 5 mph from the S.
  • Forecast day icon
    Thursday
    40% Chance of Rain
    73°
    Forecast night icon
    Night
    40% Chance of Rain
    58°
    Thursday 5/2
    Day
    73°
    40% Chance of Rain
    Forecast day icon
    Night
    58°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a 40% chance for rain and thunderstorms. High temperature around 73F. Dew point will be around 55F with an average humidity of 63%. Winds will be 5 mph from the S.
    Night Details
    Partly cloudy with a 40% chance for rain and thunderstorms. Low temperature around 58F. Dew point will be around 53F with an average humidity of 67%. Winds will be 3 mph from the S.