10-day forecast

Today Clear 1% 60° 90° Today · UV 5 · Wind 13 mph · ☀ 7:06 AM – 6:34 PM
Sat 10 Mostly cloudy 1% 63° 82° Saturday, October 10 · UV 3 · Wind 9 mph · ☀ 7:07 AM – 6:32 PM
Sun 11 Mostly clear 0% 60° 81° Sunday, October 11 · UV 5 · Wind 4 mph · ☀ 7:08 AM – 6:31 PM
Mon 12 Mostly cloudy 0% 63° 91° Monday, October 12 · UV 4 · Wind 11 mph · ☀ 7:09 AM – 6:29 PM
Tue 13 Drizzle 50% 69° 85° Tuesday, October 13 · UV 4 · Wind 9 mph · ☀ 7:10 AM – 6:28 PM
Wed 14 Drizzle 85% 63° 81° Wednesday, October 14 · UV 0 · Wind 11 mph · ☀ 7:11 AM – 6:26 PM
Thu 15 Showers 65% 63° 80° Thursday, October 15 · UV 3 · Wind 13 mph · ☀ 7:12 AM – 6:25 PM
Fri 16 Mostly cloudy 0% 52° 69° Friday, October 16 · UV 2 · Wind 14 mph · ☀ 7:13 AM – 6:24 PM
Sat 17 Mostly clear 0% 47° 63° Saturday, October 17 · UV 3 · Wind 11 mph · ☀ 7:14 AM – 6:22 PM
Sun 18 Mostly clear 0% 46° 66° Sunday, October 18 · UV 3 · Wind 7 mph · ☀ 7:15 AM – 6:21 PM

14-day outlook & extended hourly ★ Premium

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About Saint Charles weather

Saint Charles is in Saint Charles County, Missouri, United States at 38.78°, -90.48°. Right now it’s 59° and clear; today’s high is 90° with a 1% chance of rain.

Missouri has a humid continental climate in the north and a humid subtropical climate in the south, placing it at the convergence of multiple weather influences. The state's central location means it receives weather from every direction — Arctic cold from Canada, Gulf moisture from the south, and dry air from the west. This produces highly variable weather and the common saying among Missourians to wait five minutes if you don't like the weather.