Columbia

Waukesha County, Illinois, United States

Unlock Minute-by-Minute Forecast

See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.

Current Weather

25°

Clear

Feels Like: 24°

Min: 23°

Max: 38°

The next few hours will be clear, with today reaching 38°C and dropping to 23°C. The coming days will be partly cloudy until night.

Does this forecast seem accurate?

Unlock Historical Data

Compare today's weather with yesterday's data and track temperature trends over time.

Hourly Forecast

24° 26° 28° 31° 33° 35° 37° 37° 38° 38° 34° 34° 31° 30° 30° 30° 29° 25° 25° 24° 24° 23° 23° 23°
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
6am
Today
Tomorrow

Daylight Hours

06:48

Sunrise

19:02

Sunset

12 hours 14 minutes of sunlight today

Moon

Waxing Crescent

11:32

Moonrise

20:42

Moonset

Daily Forecast

Today

23°
38°

Wednesday

23°
34°

Thursday

24°
35°

Friday

23°
34°

Saturday

23°
34°

Sunday

22°
30°

Monday

18°
26°

Tuesday

16°
26°

Wednesday

17°
25°

Thursday

17°
27°

Air Quality Data Available

Upgrade to access real-time air quality data for Columbia.

UV Index

No protection needed
0 Low
Low Extreme

Humidity

75% Humid
Low High

Weather in Columbia today, September 15, 2026

Sunshine leads the day in Columbia on September 15, 2026, with a patch of cloud building near 15:00. The broader outlook stays fair despite that temporary thickening. Expect a brighter morning, with limited cloud around 0% by 07:00. Conditions start on a settled note.

The day peaks near 38°C and cools toward 23°C. The air stays humid, with relative humidity between 27% and 79% and the peak around 07:00. Airflow remains manageable, reaching about 5.7 km/h around 10:00.

Through the afternoon skies look more workable, with cloud near 21% around 15:00. Later outdoor plans have a clearer window than the morning may have suggested. Visibility stays near 16.1 km. Sunrise is at 06:48 and sunset at 19:02, giving 12 hours 14 minutes of sunlight today.

In short, September 15, 2026 looks like a fine day in Columbia for being outside, peaking around 38°C.

Frequently asked questions about weather in Columbia

How warm does it get in Columbia?

The warmest month in Columbia is July, with average high temperatures of 32°C. The average temperature during this period is around 27°C.

How cold does it get in Columbia?

The coldest month in Columbia 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 Columbia?

The wettest month in Columbia is April, with an average of 136mm of precipitation.

What is the driest time of year in Columbia?

The driest month in Columbia is December, with an average of 65mm of precipitation.

View full climate insights for Columbia →

Airpult

Get accurate weather forecasts worldwide with real-time updates and severe weather alerts. Covering 6M+ locations with precise, reliable weather data.

© 2026 Samuenti GmbH. All rights reserved.

gb English
Metric (°C, km/h)