Weather in Saint Charles, Missouri, United States

7-Day Detailed Weather Forecast for Saint Charles

Overnight

Temperature: 77°F

Wind Speed: 9 mph

Wind Direction: S

Forecast: Clear, with a low around 77. South wind around 9 mph.

Saturday

Temperature: 98°F

Wind Speed: 9 to 15 mph

Wind Direction: S

Forecast: Sunny, with a high near 98. Heat index values as high as 109. South wind 9 to 15 mph, with gusts as high as 24 mph.

Saturday Night

Temperature: 78°F

Wind Speed: 7 to 14 mph

Wind Direction: S

Forecast: Clear, with a low around 78. Heat index values as high as 106. South wind 7 to 14 mph, with gusts as high as 23 mph.

Sunday

Temperature: 98°F

Wind Speed: 7 to 12 mph

Wind Direction: SW

Forecast: Sunny, with a high near 98. Heat index values as high as 106. Southwest wind 7 to 12 mph.

Sunday Night

Temperature: 77°F

Wind Speed: 6 to 10 mph

Wind Direction: S

Forecast: Mostly clear, with a low around 77. South wind 6 to 10 mph.

Monday

Temperature: 97°F

Wind Speed: 8 mph

Wind Direction: SW

Forecast: Sunny. High near 97, with temperatures falling to around 93 in the afternoon.

Monday Night

Temperature: 77°F

Wind Speed: 3 to 7 mph

Wind Direction: S

Forecast: Partly cloudy, with a low around 77.

Tuesday

Temperature: 94°F

Wind Speed: 2 to 6 mph

Wind Direction: S

Forecast: A slight chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 94. Chance of precipitation is 20%.

Tuesday Night

Temperature: 75°F

Wind Speed: 5 mph

Wind Direction: S

Forecast: A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 75. Chance of precipitation is 20%.

Wednesday

Temperature: 95°F

Wind Speed: 2 to 6 mph

Wind Direction: SW

Forecast: A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Chance of precipitation is 20%.

Wednesday Night

Temperature: 77°F

Wind Speed: 6 mph

Wind Direction: SW

Forecast: A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 77. Chance of precipitation is 20%.

Thursday

Temperature: 95°F

Wind Speed: 5 to 9 mph

Wind Direction: SW

Forecast: A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 95. Chance of precipitation is 20%.

Thursday Night

Temperature: 75°F

Wind Speed: 5 to 8 mph

Wind Direction: SW

Forecast: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 75. Chance of precipitation is 20%.

Friday

Temperature: 91°F

Wind Speed: 5 to 8 mph

Wind Direction: SW

Forecast: A slight chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 30%.