La Grange

Platte County, Illinois, United States

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Current Weather

26°

Overcast

Feels Like: 25°

Min: 19°

Max: 31°

The next few hours will be overcast, with today reaching 31°C and dropping to 20°C. The coming days will be mostly cloudy throughout the day.

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Hourly Forecast

25° 26° 28° 30° 31° 31° 30° 29° 29° 27° 27° 26° 25° 24° 24° 24° 22° 21° 21° 20° 20° 20° 20° 21°
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11am
12pm
1pm
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7pm
8pm
9pm
10pm
11pm
12am
1am
2am
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4am
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8am
9am
Today
Tomorrow

Daylight Hours

06:38

Sunrise

18:53

Sunset

12 hours 15 minutes of sunlight today

Moon

Waxing Crescent

11:33

Moonrise

20:24

Moonset

Daily Forecast

Today

19°
31°

Wednesday

20°
24°

Thursday

21°
25°

Friday

19°
23°

Saturday

20°
25°

Sunday

20°
23°

Monday

17°
21°

Tuesday

16°
21°

Wednesday

16°
21°

Thursday

14°
21°

Air Quality Data Available

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UV Index

Wear sunscreen
4 Moderate
Low Extreme

Humidity

59% Comfortable
Low High

Weather in La Grange today, September 15, 2026

La Grange looks cloudy on September 15, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward. Cloud leads the morning, peaking close to 100% near 10:00. Sunshine has little room until later in the day.

Temperatures climb from an overnight low near 19°C toward a daytime high of about 31°C. Moisture in the air spans 52%-85%, with the highest values around 23:00. A lighter breeze peaks around 10:00 near 6.0 km/h.

Through the afternoon cloud remains the main feature, with cover near 100% around 12:00. Bright spells should stay limited even as the day wears on. Horizontal visibility sits around 16.0 km, briefly nearer 15.1 km. Expect sunrise at 06:38, sunset at 18:53, and 12 hours 15 minutes of sunlight today overall.

In short, cloud leads the story in La Grange on September 15, 2026; expect limited sun and a peak around 31°C.

Frequently asked questions about weather in La Grange

How warm does it get in La Grange?

The warmest month in La Grange is July, with average high temperatures of 28°C. The average temperature during this period is around 23°C.

How cold does it get in La Grange?

The coldest month in La Grange is January, with average low temperatures of -5°C. The average temperature during this period is around -3°C.

What is the wettest time of year in La Grange?

The wettest month in La Grange is May, with an average of 123mm of precipitation.

What is the driest time of year in La Grange?

The driest month in La Grange is February, with an average of 61mm of precipitation.

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Metric (°C, km/h)