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Saint Clair County, IL Weather Conditions

Updated: Wed Jul 15th 2026 6:00 PM CDT

Partly Cloudy

89^°F 32^°C

Feels Like 91^°F / 33^°C

Saint Clair County, IL weather condition is Partly Cloudy and 89°F.

Today's Weather in Saint Clair County,IL

The current weather in Saint Clair County IL as of 6:00 PM CDT on Wed Jul 15th 2026, has a sky condition of Partly Cloudy with the visibility of 9 mile(s) and the UV index at 1.2. It is 89 degrees fahrenheit but feels like 91 degrees. The barometric pressure is 30.02 - measured by inches of mercury - and is rising since its last observation. The humidity is 53 percent that's rising since the last report, with a dew point of 65 degrees fahrenheit which is falling. Wind direction is from the Northeast at 4.5 miles per hour, gusting at 6.6 miles per hour. Sunrise was at 5:48 AM and Sunset is at 8:23 PM. The moon phase is a New Moon moon rising at 6:45 AM. Thank you for listening to the weather report from LocalConditions.com!

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Sun & Moon

Sun

Sunrise: 5:48 AM

Sunset: 8:23 PM

As of:

Moon

Moonrise: 6:45 AM

Moonset: 9:30 PM

Phase: New Moon Moon

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Radar Alerts Next 48 Hours Traffic

Hourly Forecast - Next 8 hours

Next 5 Days...

Sunny

Sunny with a high of 96°F and a low of 71°F. 5%% possible chance of rain predicted. Winds will be light at 8mph at times. The humidity will be on the higher side, reaching around 68%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 96° \| Lo 71°	68%	5%	0%	7.8 mph

Sunny

Sunny with a high of 89°F and a low of 73°F. Probable rainfall forecasted, having a 78% chance with an estimated 0.68in. Winds will be light at 4mph at times. The humidity will be on the higher side, reaching around 79%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 89° \| Lo 73°	79%	78% \| est. 0.68in	0%	3.8 mph

Partly Cloudy

Partly Cloudy with a high of 89°F and a low of 73°F. Probable rainfall forecasted, having a 73% chance with an estimated 0.21in. Winds will be moderate, blowing around 14mph. The humidity will be on the higher side, reaching around 79%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 89° \| Lo 73°	79%	73% \| est. 0.21in	0%	13.2 mph

Sunny

Sunny with a high of 93°F and a low of 71°F. 6%% possible chance of rain predicted. Winds will be moderate, blowing around 15mph. The humidity will be on the higher side, reaching around 69%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 93° \| Lo 71°	69%	6%	0%	14.1 mph

Scattered Rain

Scattered Rain with a high of 88°F and a low of 72°F. Probable rainfall forecasted, having a 77% chance with an estimated 0.21in. Winds will be light at 8mph at times. Expect high humidity with levels above 80% to 81%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 88° \| Lo 72°	81%	77% \| est. 0.21in	0%	7.8 mph

Yesterday 5-Day Wind

Weather Radar Map

Hourly Temperature

The current temperature today is 89^°F. The morning temperature of 71°^F is lowest at 5am with the daytime high of 96°^F at 2pm and a low around 78°^F at 11pm is expected.

Hourly Barometric Pressure

The highest pressure today is 30.11^inHg at 9am and lowest being 29.98^inHg at 5pm.

Hourly Wind Speeds

The fastest wind is reported to be 7.8^mph at 2pm, while the slowest is 3.4^mph around 2am; expect wind gusts peaking 10.6^mph at 3pm. View live wind conditions in Saint Clair County

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