10-Day Weather Forecast - Johnston, IA

Mostly sunny in the morning then becoming mostly cloudy. Breezy and not as cool with highs in the upper 50s. Southwest winds 10 to 15 mph with gusts up to 25 mph increasing to 15 to 25 mph with gusts up to 45 mph in the afternoon.

Mostly cloudy. A chance of rain in the evening. Breezy with lows in the mid 30s. Southwest winds 20 to 25 mph becoming west after midnight. Gusts up to 45 mph. Chance of rain 50 percent.

Partly sunny and breezy. Highs in the upper 40s. Northwest winds 15 to 25 mph. Gusts up to 40 mph in the morning.

Mostly cloudy. A slight chance of snow after midnight. Lows in the lower 30s. North winds 5 to 10 mph becoming east after midnight. Chance of snow 20 percent.

Cloudy with a slight chance of snow. A slight chance of rain in the afternoon. Highs in the upper 40s. Chance of precipitation 20 percent.

Cloudy. A chance of rain and snow in the evening then rain likely with a slight chance of thunderstorms after midnight. Little or no snow accumulation. Lows in the lower 30s. Chance of precipitation 70 percent.

Rain and snow. Light snow accumulation. Windy. Near steady temperature in the upper 30s. Chance of precipitation 80 percent.

Mostly cloudy. A slight chance of snow in the evening. Windy and much cooler with lows around 10 above. Chance of snow 20 percent.

Mostly sunny. Cooler with highs in the mid 20s.

Mostly clear in the evening then becoming partly cloudy. Lows around 10 above.

Mostly cloudy. A slight chance of snow in the afternoon. Highs in the mid 30s. Chance of snow 20 percent.

Mostly cloudy. A slight chance of snow in the evening. Not as cool with lows in the mid 20s. Chance of snow 20 percent.

Partly sunny. Highs in the upper 40s.

Mostly clear. Low temperature around 33F. Dew point will be around 32F with an average humidity of 85%. Winds will be 5 mph from the SE.

Mostly sunny. High temperature around 58F. Dew point will be around 40F with an average humidity of 76%. Winds will be 8 mph from the S.

Partly cloudy. Low temperature around 44F. Dew point will be around 44F with an average humidity of 80%. Winds will be 3 mph from the S.

Mostly sunny. High temperature around 65F. Dew point will be around 46F with an average humidity of 66%. Winds will be 2 mph from the W.

Clear. Low temperature around 42F. Dew point will be around 41F with an average humidity of 70%. Winds will be 3 mph from the NE.