10-Day Weather Forecast - Saint Marys, IA
- 99|79°FHot and HumidHourly details
Today
99°FMostly sunny. Hot. Near steady temperature in the upper 90s. Southwest winds around 10 mph. Heat index values up to 116.
Tonight
79°FPartly cloudy with a slight chance of showers. A slight chance of thunderstorms after midnight. Humid with lows in the upper 70s. South winds 10 to 15 mph. Chance of rain 20 percent. Heat index values up to 112 early in the evening.
- 95|73°F30% Chance of RainHourly details
Day
95°FSunny hot with highs in the mid 90s. Southwest winds around 10 mph with gusts up to 20 mph becoming northwest in the afternoon. Heat index values up to 112 in the afternoon.
Night
73°FMostly 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 109 early in the evening.
- 89|70°FPartly SunnyHourly details
Day
89°FPartly sunny. Humid with highs in the upper 80s. Northeast winds 5 to 10 mph.
Night
70°FPartly cloudy. Lows in the upper 60s.
- 91|71°FSunnyHourly details
Day
91°FSunny. Highs around 90.
Night
71°FMostly clear. Lows in the upper 60s.
- 88|71°FPartly SunnyHourly details
Day
88°FPartly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 20 percent.
Night
71°FMostly cloudy with a chance of thunderstorms. A chance of showers in the evening then showers likely after midnight. Lows in the upper 60s. Chance of rain 70 percent.
- 86|68°F50% Chance of StormsHourly details
Day
86°FPartly sunny with a slight chance of thunderstorms. A chance of showers mainly in the morning. Highs in the lower 80s. Chance of rain 50 percent.
Night
68°FPartly cloudy. Lows in the mid 60s.
Weekend Weather
- 86|67°FSunny
Day
86°FSunny. Highs in the lower 80s.
Night
67°FMostly 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.
- 86|69°FSunny
Day
86°FSunny. High temperature around 86F. Dew point will be around 71F with an average humidity of 76%. Winds will be 2 mph from the E.
Night
69°FClear. Low temperature around 69F. Dew point will be around 69F with an average humidity of 80%. Winds will be 4 mph from the SE.
- 88|70°FMostly Sunny
Day
88°FMostly 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.
Night
70°FMostly 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.
- 85|64°F30% Chance of Rain
Day
85°FMostly 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.
Night
64°FMostly 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.













