See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
26°
Mostly Clear
Feels Like: 11°
Min: 12°
Max: 37°
The next few hours will be clear, with today reaching 37°C and dropping to 12°C. The coming days will be mostly cloudy
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:50
Sunrise
19:01
Sunset
Moon
Waxing Crescent
12:37
Moonrise
21:14
Moonset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
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Weather in Saint Charles today, September 16, 2026
Saint Charles stays under cloudy skies on September 16, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open. The morning looks comparatively open, with cloud near 53% around 04:00. Early outdoor plans have a better chance of staying dry and bright.
Expect highs of 37°C and cooler readings close to 12°C. Moisture in the air spans 37%-90%, with the highest values around 07:00. Expect gentle winds, highest near 20:00 at 3.9 km/h.
Expect persistent cloud later on, with amounts around 90% by 23:00. Sunshine remains the exception, not the rule. Visibility stays generally good near 15.1 km on average, though it can drop toward 11.1 km in thicker cloud or showers. Daylight runs from 06:50 to 19:01, lasting 12 hours 11 minutes of sunlight today.
Taken together, overcast skies in Saint Charles on September 16, 2026 favour indoor or covered options, with temperatures near 37°C.
Frequently asked questions about weather in Saint Charles
How warm does it get in Saint Charles?
The warmest month in Saint Charles is July, with average high temperatures of 31°C. The average temperature during this period is around 26°C.
How cold does it get in Saint Charles?
The coldest month in Saint Charles is January, with average low temperatures of -3°C. The average temperature during this period is around 0°C.
What is the wettest time of year in Saint Charles?
The wettest month in Saint Charles is May, with an average of 129mm of precipitation.
What is the driest time of year in Saint Charles?
The driest month in Saint Charles is December, with an average of 56mm of precipitation.
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