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Current Weather Conditions for Johnston, IA

Mostly cloudy. Low around 18, with temperatures rising to around 20 overnight. North wind around 5 mph.
20°F

Conditions

Wind: 5 mph NE
Humidity: 92%
Probability of Precipitation: 2%

Hourly Forcast (next 12 hours)

7 AM 8 AM 9 AM 10 AM 11 AM 12 PM 1 PM 2 PM 3 PM 4 PM 5 PM 6 PM 7 PM
20° 20° 20° 20° 20° 19° 19° 20° 22° 23° 24° 25° 25°

Upcoming Week

Day Forecast High Low
Overnight
Mostly Cloudy
Mostly cloudy. Low around 18, with temperatures rising to around 20 overnight. North wind around 5 mph.
39°F 29°F
Friday
Mostly Cloudy
Mostly cloudy. High near 25, with temperatures falling to around 21 in the afternoon. Wind chill values as low as 9. Northwest wind 5 to 13 mph, with gusts as high as 21 mph.
39°F 29°F
Friday Night
Cloudy then Chance Light Snow
A chance of snow after midnight. Cloudy, with a low around 6. Wind chill values as low as -3. North northwest wind 6 to 10 mph. Chance of precipitation is 30%. New snow accumulation of less than half an inch possible.
39°F 29°F
Saturday
Snow
Snow. Mostly cloudy. High near 7, with temperatures falling to around 4 in the afternoon. Wind chill values as low as -10. North northwest wind 6 to 10 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
39°F 29°F
Saturday Night
Mostly Clear
Mostly clear, with a low around -11. Northwest wind around 8 mph.
39°F 29°F
Sunday
Sunny
Sunny, with a high near 7.
39°F 29°F
Sunday Night
Mostly Clear
Mostly clear, with a low around -2.
39°F 29°F
Monday
Mostly Sunny
Mostly sunny, with a high near 32.
39°F 29°F
Monday Night
Partly Cloudy
Partly cloudy, with a low around 17.
39°F 29°F
Tuesday
Mostly Sunny
Mostly sunny, with a high near 39.
39°F 29°F
Tuesday Night
Mostly Cloudy
Mostly cloudy, with a low around 28.
39°F 29°F
Wednesday
Partly Sunny
Partly sunny, with a high near 42.
39°F 29°F
Wednesday Night
Mostly Cloudy
Mostly cloudy, with a low around 28.
39°F 29°F
Thursday
Mostly Sunny
Mostly sunny, with a high near 36.
39°F 29°F
Data provided by weather.gov