Johnston, Iowa | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Clear
    36°
    Thursday 4/18
    Forecast night icon
    36°
    Clear
    Hourly
    Night Details
    Clear. Low temperature around 36F. Dew point will be around 32F with an average humidity of 63%. Winds will be 8 mph from the NW.
  • Forecast day icon
    Friday
    Mostly Sunny
    55°
    Forecast night icon
    Night
    Mostly Clear
    37°
    Friday 4/19
    Day
    55°
    Mostly Sunny
    Forecast day icon
    Night
    37°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Areas of frost early then widespread frost this morning. Mostly sunny. Highs in the upper 50s. West winds around 5 mph increasing to around 20 mph with gusts up to 35 mph.
    Night Details
    Mostly clear. Lows in the lower 30s. Northwest winds 15 to 20 mph with gusts up to 30 mph diminishing to around 10 mph with gusts up to 20 mph after midnight.
  • Forecast day icon
    Saturday
    Mostly Sunny
    51°
    Forecast night icon
    Night
    Mostly Cloudy
    35°
    Saturday 4/20
    Day
    51°
    Mostly Sunny
    Forecast day icon
    Night
    35°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the lower 50s. Northwest winds 10 to 15 mph with gusts up to 25 mph.
    Night Details
    Mostly cloudy in the evening then clearing. Widespread frost after midnight. Lows in the lower 30s. Northwest winds 5 to 10 mph.
  • Forecast day icon
    Sunday
    Sunny
    60°
    Forecast night icon
    Night
    Mostly Clear
    37°
    Sunday 4/21
    Day
    60°
    Sunny
    Forecast day icon
    Night
    37°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Widespread frost in the morning. Sunny. Highs around 60. Northwest winds 5 to 10 mph.
    Night Details
    Mostly clear. Lows in the mid 30s.
  • Forecast day icon
    Monday
    50% Chance Rain Showers
    65°
    Forecast night icon
    Night
    70% Chance Rain Showers
    51°
    Monday 4/22
    Day
    65°
    50% Chance Rain Showers
    Forecast day icon
    Night
    51°
    70% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny in the morning then mostly cloudy with a chance of showers in the afternoon. Highs in the mid 60s. Chance of rain 50 percent.
    Night Details
    Showers likely mainly in the evening. Lows in the upper 40s. Chance of rain 70 percent.
  • Forecast day icon
    Tuesday
    50% Chance Rain Showers
    65°
    Forecast night icon
    Night
    Mostly Clear
    42°
    Tuesday 4/23
    Day
    65°
    50% Chance Rain Showers
    Forecast day icon
    Night
    42°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A chance of showers in the morning. Highs in the mid 60s. Chance of rain 50 percent.
    Night Details
    Mostly clear. Lows in the mid 30s.
  • Forecast day icon
    Wednesday
    Sunny
    63°
    Forecast night icon
    Night
    Mostly Cloudy
    46°
    Wednesday 4/24
    Day
    63°
    Sunny
    Forecast day icon
    Night
    46°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the lower 60s.
    Night Details
    Mostly cloudy. Lows in the lower 40s.
  • Forecast day icon
    Thursday
    50% Chance Rain Showers
    62°
    Forecast night icon
    Night
    70% Chance of Rain
    50°
    Thursday 4/25
    Day
    62°
    50% Chance Rain Showers
    Forecast day icon
    Night
    50°
    70% Chance of Rain
    Forecast night icon
    Day Details
    Partly sunny with a 50 percent chance of showers. Highs in the lower 60s.
    Night Details
    Cloudy with probable rain. Chance of precipitation 65%. Low temperature around 50F. Dew point will be around 43F with an average humidity of 66%. Winds will be 13 mph from the SE.
  • Forecast day icon
    Friday
    70% Chance of Rain
    62°
    Forecast night icon
    Night
    70% Chance of Rain
    53°
    Friday 4/26
    Day
    62°
    70% Chance of Rain
    Forecast day icon
    Night
    53°
    70% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with probable rain. Chance of precipitation 70%. High temperature around 62F. Dew point will be around 47F with an average humidity of 71%. Winds will be 12 mph from the SE.
    Night Details
    Cloudy with probable rain. Chance of precipitation 65%. Low temperature around 53F. Dew point will be around 48F with an average humidity of 70%. Winds will be 10 mph from the SE.
  • Forecast day icon
    Saturday
    60% Chance of Rain
    69°
    Forecast night icon
    Night
    60% Chance of Rain
    56°
    Saturday 4/27
    Day
    69°
    60% Chance of Rain
    Forecast day icon
    Night
    56°
    60% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a chance of rain. Chance of precipitation 55%. High temperature around 69F. Dew point will be around 53F with an average humidity of 70%. Winds will be 10 mph from the SE.
    Night Details
    Mostly cloudy with a 60% chance for rain and thunderstorms. Low temperature around 56F. Dew point will be around 52F with an average humidity of 69%. Winds will be 7 mph from the SE.