Johnston, Iowa | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Clear
    46°
    Saturday 5/4
    Forecast night icon
    46°
    Clear
    Hourly
    Night Details
    Clear. Low temperature around 46F. Dew point will be around 44F with an average humidity of 79%. Winds will be 3 mph from the NW.
  • Forecast day icon
    Sunday
    Mostly Sunny
    65°
    Forecast night icon
    Night
    Mostly Clear
    55°
    Sunday 5/5
    Day
    65°
    Mostly Sunny
    Forecast day icon
    Night
    55°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the upper 60s. Northwest winds around 5 mph becoming northeast this morning then becoming southeast this afternoon.
    Night Details
    Mostly clear. Lows in the upper 40s. Southeast winds 5 to 10 mph.
  • Forecast day icon
    Monday
    Partly Sunny
    71°
    Forecast night icon
    Night
    Thunderstorms
    59°
    Monday 5/6
    Day
    71°
    Partly Sunny
    Forecast day icon
    Night
    59°
    Thunderstorms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. Highs in the mid 70s. Southeast winds 15 to 20 mph with gusts up to 30 mph.
    Night Details
    A chance of thunderstorms. Showers. Lows in the mid 50s. South winds 15 to 20 mph with gusts up to 35 mph. Chance of rain 90 percent.
  • Forecast day icon
    Tuesday
    50% Chance Rain Showers
    71°
    Forecast night icon
    Night
    Mostly Cloudy
    52°
    Tuesday 5/7
    Day
    71°
    50% Chance Rain Showers
    Forecast day icon
    Night
    52°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly sunny in the morning then clearing. A chance of showers in the morning. Highs in the mid 70s. Southwest winds 15 to 20 mph. Chance of rain 50 percent.
    Night Details
    Mostly clear in the evening then becoming mostly cloudy. Lows in the lower 50s.
  • Forecast day icon
    Wednesday
    50% Chance of Storms
    71°
    Forecast night icon
    Night
    50% Chance of Storms
    49°
    Wednesday 5/8
    Day
    71°
    50% Chance of Storms
    Forecast day icon
    Night
    49°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 50 percent.
    Night Details
    Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the upper 40s. Chance of rain 50 percent.
  • Forecast day icon
    Thursday
    40% Chance of Storms
    64°
    Forecast night icon
    Night
    Partly Cloudy
    50°
    Thursday 5/9
    Day
    64°
    40% Chance of Storms
    Forecast day icon
    Night
    50°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 60s. Chance of rain 40 percent.
    Night Details
    Partly cloudy. Lows in the upper 40s.
  • Forecast day icon
    Friday
    30% Chance Rain Showers
    59°
    Forecast night icon
    Night
    Mostly Clear
    47°
    Friday 5/10
    Day
    59°
    30% Chance Rain Showers
    Forecast day icon
    Night
    47°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny with a 30 percent chance of showers. Highs in the mid 60s.
    Night Details
    Mostly clear. Lows in the mid 40s.
  • Forecast day icon
    Saturday
    Sunny
    63°
    Forecast night icon
    Night
    Mostly Clear
    51°
    Saturday 5/11
    Day
    63°
    Sunny
    Forecast day icon
    Night
    51°
    Mostly Clear
    Forecast night icon
    Day Details
    Sunny. Highs around 70.
    Night Details
    Mostly clear. Low temperature around 51F. Dew point will be around 41F with an average humidity of 60%. Winds will be 6 mph from the W.
  • Forecast day icon
    Sunday
    Sunny
    67°
    Forecast night icon
    Night
    Clear
    53°
    Sunday 5/12
    Day
    67°
    Sunny
    Forecast day icon
    Night
    53°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 67F. Dew point will be around 43F with an average humidity of 54%. Winds will be 6 mph from the W.
    Night Details
    Clear. Low temperature around 53F. Dew point will be around 45F with an average humidity of 61%. Winds will be 4 mph from the SW.
  • Forecast day icon
    Monday
    Sunny
    68°
    Forecast night icon
    Night
    Clear
    53°
    Monday 5/13
    Day
    68°
    Sunny
    Forecast day icon
    Night
    53°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 68F. Dew point will be around 47F with an average humidity of 57%. Winds will be 4 mph from the SW.
    Night Details
    Clear. Low temperature around 53F. Dew point will be around 47F with an average humidity of 66%. Winds will be 3 mph from the S.