10-Day Weather Forecast - Johnston, IA

Sunny. Much cooler with highs in the upper 20s. North winds 15 to 20 mph with gusts up to 30 mph.

Mostly clear. Lows around 14. North winds 10 to 15 mph becoming northwest around 5 mph after midnight.

Partly sunny in the morning then mostly cloudy with a slight chance of snow in the afternoon. Highs in the mid 30s. Southwest winds 10 to 15 mph. Chance of snow 20 percent.

Mostly cloudy. A chance of snow in the evening. Not as cool. Near steady temperature in the mid 30s. Chance of snow 30 percent.

Mostly cloudy. A chance of snow in the afternoon. Breezy with highs in the mid 30s. Temperature falling into the upper 20s in the afternoon. Chance of snow 40 percent.

Mostly cloudy. Cooler with lows around 10 above.

Partly sunny. Cooler with highs in the lower 20s.

Mostly cloudy in the evening then becoming partly cloudy. Lows zero to 5 above zero.

Mostly sunny. Highs in the lower 20s.

Partly cloudy. Lows around 10 above.

Mostly sunny. Highs in the upper 20s.

Clear. Low temperature around 14F. Dew point will be around 6F with an average humidity of 67%. Winds will be 6 mph from the N.

Mostly sunny. High temperature around 29F. Dew point will be around 9F with an average humidity of 58%. Winds will be 4 mph from the S.

Partly cloudy. Low temperature around 24F. Dew point will be around 14F with an average humidity of 64%. Winds will be 5 mph from the S.

Partly cloudy. High temperature around 32F. Dew point will be around 20F with an average humidity of 68%. Winds will be 2 mph from the SE.

Mostly clear. Low temperature around 23F. Dew point will be around 17F with an average humidity of 70%. Winds will be 3 mph from the NE.

Mostly cloudy. High temperature around 29F. Dew point will be around 20F with an average humidity of 74%. Winds will be 5 mph from the E.

Cloudy with a slight chance of snow. Chance of precipitation 25%. Low temperature around 22F. Dew point will be around 20F with an average humidity of 81%. Winds will be 4 mph from the NE.