10-Day Weather Forecast - Saint Marys, IA

Mostly sunny. A slight chance of showers and thunderstorms in the morning. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph, becoming west in the afternoon. Chance of rain 20 percent. Heat index values up to 102 in the afternoon.

Mostly clear in the evening, then partly cloudy with a chance of showers and thunderstorms after midnight. Humid with lows in the lower 70s. East winds around 5 mph. Chance of rain 30 percent. Heat index values up to 100 early in the evening.

Partly sunny. A chance of showers and thunderstorms in the morning. Humid with highs around 90. East winds 5 to 10 mph. Chance of rain 40 percent. Heat index values up to 100 in the afternoon.

Partly cloudy in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Humid with lows around 70. Northeast winds 5 to 10 mph. Chance of rain 50 percent.

A chance of thunderstorms. Showers. Highs in the lower 80s. Chance of rain 90 percent.

A chance of thunderstorms. Showers. Lows in the upper 60s. Chance of rain 80 percent.

Mostly cloudy. A chance of showers and thunderstorms, mainly in the morning. Highs in the lower 80s. Chance of rain 50 percent.

Mostly cloudy with showers likely with a chance of thunderstorms. Lows in the upper 60s. Chance of rain 60 percent.

Mostly cloudy in the morning, then becoming partly sunny. A chance of showers with a slight chance of thunderstorms. Highs in the mid 80s. Chance of rain 50 percent.

Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of rain 50 percent.

Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the morning, then partly sunny with a slight chance of showers in the afternoon. Highs around 80. Chance of rain 50 percent.

Mostly cloudy with a slight chance of showers. A slight chance of thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent.

Partly sunny. Highs in the mid 70s.

Mostly clear. Low temperature around 67F. Dew point will be around 70F with an average humidity of 97%. Winds will be 3 mph from the SE.

Mostly sunny. High temperature around 81F. Dew point will be around 73F with an average humidity of 92%. Winds will be 4 mph from the S.

Mostly clear. Low temperature around 67F. Dew point will be around 71F with an average humidity of 92%. Winds will be 3 mph from the S.

Sunny. High temperature around 84F. Dew point will be around 73F with an average humidity of 87%. Winds will be 2 mph from the W.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 69F. Dew point will be around 72F with an average humidity of 88%. Winds will be 2 mph from the S.