10-Day Weather Forecast - Saint Marys, IA

Sunny hot with highs in the upper 90s. Southwest winds around 10 mph with gusts up to 20 mph becoming northwest in the afternoon. Heat index values up to 109.

Mostly clear in the evening then becoming partly cloudy. Patchy smoke. Humid with lows in the lower 70s. North winds 5 to 10 mph. Heat index values up to 107 early in the evening.

Mostly sunny. Humid with highs around 90. Northeast winds 5 to 10 mph.

Partly cloudy in the evening then clearing. Lows in the upper 60s.

Sunny. Highs in the lower 90s.

Mostly clear. Lows in the upper 60s.

Mostly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 20 percent.

Mostly cloudy with a slight chance of showers and thunderstorms in the evening then partly cloudy with a chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of rain 40 percent.

Mostly sunny with a chance of showers. A slight chance of thunderstorms in the morning then a chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 40 percent.

Mostly clear. A slight chance of showers and thunderstorms in the evening. Lows in the mid 60s. Chance of rain 20 percent.

Sunny. Highs in the upper 80s.

Mostly clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 67F. Dew point will be around 69F with an average humidity of 86%. Winds will be 4 mph from the NE.

Sunny. High temperature around 86F. Dew point will be around 71F with an average humidity of 76%. Winds will be 2 mph from the E.

Clear. Low temperature around 69F. Dew point will be around 69F with an average humidity of 80%. Winds will be 4 mph from the SE.

Mostly sunny with widely scattered thunderstorms. Chance of storms 25%. High temperature around 88F. Dew point will be around 72F with an average humidity of 74%. Winds will be 4 mph from the S.

Mostly clear with a 25% chance for rain and thunderstorms. Low temperature around 70F. Dew point will be around 69F with an average humidity of 74%. Winds will be 4 mph from the S.

Mostly sunny with a 30% chance for rain and thunderstorms. High temperature around 85F. Dew point will be around 69F with an average humidity of 72%. Winds will be 3 mph from the N.

Mostly clear with a 30% chance for rain and thunderstorms. Low temperature around 64F. Dew point will be around 66F with an average humidity of 80%. Winds will be 4 mph from the N.