10-Day Weather Forecast - Keystone, IA

Partly sunny with a chance of showers and thunderstorms in the morning then mostly cloudy with showers and thunderstorms likely in the afternoon. Some thunderstorms may produce heavy rainfall in the afternoon. Humid with highs in the mid 80s. South winds 10 to 15 mph. Chance of rain 60 percent.

Thunderstorms likely. Showers. Some thunderstorms may produce heavy rainfall. Humid with lows in the upper 60s. Southeast winds 5 to 10 mph. Chance of rain 90 percent.

Becoming partly sunny in the afternoon. A chance of thunderstorms. Showers likely mainly in the morning. Some thunderstorms may produce heavy rainfall. Humid with highs in the lower 80s. South winds 5 to 10 mph. Chance of rain 60 percent.

Showers and thunderstorms likely in the evening then showers after midnight. Locally heavy rainfall possible in the evening. Humid with lows in the upper 60s. South winds around 5 mph. Chance of rain 80 percent.

Mostly cloudy in the morning then becoming partly sunny. A chance of showers. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent.

Mostly cloudy. A chance of showers after midnight. Lows in the mid 60s. Chance of rain 40 percent.

Partly cloudy. Highs in the mid 80s. Lows in the mid 60s.

Partly cloudy. Highs in the mid 80s. Lows in the mid 60s.

Partly cloudy. Highs in the mid 80s. Lows in the mid 60s.

Mostly clear in the evening then partly cloudy with a chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 30 percent.

A chance of showers in the morning. Mostly sunny. Highs in the mid 80s. Chance of rain 30 percent.

Mostly clear. Lows in the upper 60s. Highs in the upper 80s.

Mostly clear. Lows in the upper 60s. Highs in the upper 80s.

Clear. Low temperature around 70F. Dew point will be around 72F with an average humidity of 90%. Winds will be 4 mph from the S.

Sunny with widely scattered thunderstorms. Chance of storms 25%. High temperature around 83F. Dew point will be around 72F with an average humidity of 83%. Winds will be 3 mph from the S.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 68F. Dew point will be around 71F with an average humidity of 89%. Winds will be 2 mph from the SE.

Sunny with a 30% chance for rain and thunderstorms. High temperature around 83F. Dew point will be around 71F with an average humidity of 81%. Winds will be 3 mph from the SE.

Clear with a 30% chance for rain and thunderstorms. Low temperature around 67F. Dew point will be around 70F with an average humidity of 88%. Winds will be 4 mph from the SE.