10-Day Weather Forecast - Johnston, IA
- |65°FPartly CloudyHourly details
Tonight
65°FPartly cloudy. Lows around 60. Northwest winds around 5 mph.
- 80|65°FPartly SunnyHourly details
Day
80°FPartly sunny. Highs in the upper 70s. Northwest winds around 5 mph.
Night
65°FMostly cloudy. A slight chance of showers after midnight. Lows in the lower 60s. East winds around 5 mph. Chance of rain 20 percent.
- 79|65°FPartly SunnyHourly details
Day
79°FPartly sunny. A slight chance of showers in the morning. Highs in the upper 70s. East winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent.
Night
65°FMostly cloudy. Lows in the lower 60s. East winds 5 to 10 mph.
Weekend Weather
- 82|71°FPartly SunnyHourly details
Day
82°FPartly sunny. Highs in the mid 80s.
Night
71°FMostly cloudy in the evening then becoming partly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 20 percent.
- 94|78°FSunnyHourly details
Day
94°FSunny. A slight chance of showers and thunderstorms in the morning. Breezy with highs in the lower 90s. Chance of rain 20 percent. Heat index values up to 105 in the afternoon.
Night
78°FMostly clear. Lows in the mid 70s. Heat index values up to 100 early in the evening.
- 96|78°FHot and HumidHourly details
Day
96°FSunny breezy hot with highs in the mid 90s. Heat index values up to 105.
Night
78°FMostly clear with a slight chance of showers and thunderstorms in the evening then partly cloudy with a chance of showers and thunderstorms after midnight. Breezy with lows in the mid 70s. Chance of rain 30 percent. Heat index values up to 100 early in the evening.
- 96|76°FSunnyHourly details
Day
96°FSunny with a slight chance of showers and thunderstorms. Highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 100.
Night
76°FPartly cloudy with a chance of showers. A slight chance of thunderstorms in the evening then a chance of thunderstorms after midnight. Lows in the lower 70s. Chance of rain 50 percent.
- 95|77°FMostly Sunny
Day
95°FMostly sunny. Highs in the mid 90s. Heat index values up to 100.
Night
77°FClear with a 25% chance for rain and thunderstorms. Low temperature around 77F. Dew point will be around 72F with an average humidity of 72%. Winds will be 9 mph from the S.
- 95|76°FSunny
Day
95°FSunny. High temperature around 95F. Dew point will be around 71F with an average humidity of 59%. Winds will be 9 mph from the S.
Night
76°FClear with a 30% chance for rain and thunderstorms. Low temperature around 76F. Dew point will be around 71F with an average humidity of 71%. Winds will be 7 mph from the S.
- 94|74°F40% Chance of Rain
Day
94°FSunny with a 40% chance for rain and thunderstorms. High temperature around 94F. Dew point will be around 71F with an average humidity of 60%. Winds will be 7 mph from the S.
Night
74°FClear with a 35% chance for rain and thunderstorms. Low temperature around 74F. Dew point will be around 70F with an average humidity of 72%. Winds will be 5 mph from the SW.













