Marion

Wallace 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

21°

Clear

Feels Like: 23°

Min: 21°

Max: 35°

The next few hours will be clear, with today reaching 35°C and dropping to 24°C. The coming days will be mostly clear 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

21° 21° 24° 27° 28° 31° 32° 33° 34° 35° 34° 34° 33° 31° 29° 28° 27° 26° 26° 26° 25° 25° 24° 24°
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
Today
Tomorrow

Daylight Hours

06:43

Sunrise

18:57

Sunset

12 hours 13 minutes of sunlight today

Moon

Waxing Crescent

11:25

Moonrise

20:38

Moonset

Daily Forecast

Today

21°
35°

Wednesday

23°
35°

Thursday

24°
36°

Friday

23°
34°

Saturday

22°
34°

Sunday

22°
31°

Monday

19°
27°

Tuesday

17°
26°

Wednesday

18°
29°

Thursday

18°
29°

Air Quality Data Available

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

UV Index

No protection needed
0 Low
Low Extreme

Humidity

89% Humid
Low High

Weather in Marion today, September 15, 2026

Conditions in Marion on September 15, 2026 favour clear skies, so the day opens with a fine, sunny outlook. Any interruptions to the blue should be brief rather than lasting. The morning looks comparatively open, with cloud near 0% around 06:00. Early outdoor plans have a better chance of staying dry and bright.

The temperature range runs from about 21°C up to 35°C. Expect humidity between 45% and 89%, most humid near 06:00. A lighter breeze peaks around 13:00 near 4.7 km/h.

Afternoon conditions open up, holding cloud close to 4% near 23:00. The day finishes on a milder, brighter note. Views remain open at about 16.1 km. Expect sunrise at 06:43, sunset at 18:57, and 12 hours 13 minutes of sunlight today overall.

In short, September 15, 2026 looks like a fine day in Marion for being outside, peaking around 35°C.

Frequently asked questions about weather in Marion

How warm does it get in Marion?

The warmest month in Marion 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 Marion?

The coldest month in Marion is January, with average low temperatures of -1°C. The average temperature during this period is around 2°C.

What is the wettest time of year in Marion?

The wettest month in Marion is April, with an average of 138mm of precipitation.

What is the driest time of year in Marion?

The driest month in Marion is September, with an average of 69mm of precipitation.

View full climate insights for Marion →

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)