Home / Local Weather & Traffic / Illinois / Centralia / Weather Forecast

Centralia, IL Weather Tomorrow

Tomorrow's weather forecast for Centralia is supported by a complete 5 day outlook covering daily precipitation forecasts, changing sky conditions, daytime highs, overnight lows, Fahrenheit and Celsius temperatures, sunrise, sunset, wind chill, and local wind details for the Centralia area and around Washington county, Illinois.
Updated: Fri Sep 4th 2026 4:30 AM CDT
Centralia, IL Weather – 9-4 – Sunny
101° / 79°
Sunny
In Centralia, it will be sunny with highs near 101°F and lows around 79°F. There's a very small chance of rainfall, only about 3%. Winds will be light at 10mph and gusts of 22.4mph at 5 AM. Humidity levels should be comfortable, sitting around 47% on average, the maximum being 69% at 5 AM and 28% being its lowest at 3 PM. Barometric pressure is its highest of 29.97inHg at 9 AM, a lowest point of 29.83inHg at 6 PM with an avg 29.9inHg.
Centralia, IL Weather – 9-5 – Sunny
102° / 81°

Weather Tomorrow

Sunny
Sunshine is in the forecast for Centralia, with a high of 102°F and a low of 81°F. There's a very small chance of rainfall, only about 5% with an estimated 0in. Wind will be moderate, blowing around 12mph on average and gusts of 26.8mph at 11 PM. Humidity levels should be comfortable, sitting around 43% on average, the maximum being 66% at 11 PM and 26% being its lowest at 4 PM. Barometric pressure is its highest of 29.91inHg at 8 AM, a lowest point of 29.78inHg at 6 PM with an avg 29.85inHg.
Centralia, IL Weather – 9-6 – Sunny
90° / 70°
Sunny
Bright and sunny conditions in Centralia, with a high of 90°F and a low of 70°F. There's a very small chance of rainfall, only about 5%. Wind will be moderate, blowing around 16mph on average and gusts of 29.3mph at 9 PM. The humidity will be on the higher side, averaging about 68%, the maximum being 98% at 7 AM and 42% being its lowest at 4 PM. Barometric pressure is its highest of 29.99inHg at 11 PM, a lowest point of 29.85inHg at 3 AM with an avg 29.92inHg.
Centralia, IL Weather – 9-7 – Sunny
89° / 63°
Sunny
Daytime highs will reach 89°F with lows dropping to 63°F in Centralia, where it will be sunny. There's a very small chance of rainfall, only about 3%. Wind will be moderate, blowing around 11mph on average and gusts of 26.9mph at 12 AM. Humidity levels should be comfortable, sitting around 56% on average, the maximum being 85% at 6 AM and 29% being its lowest at 5 PM. Barometric pressure is its highest of 30.08inHg at 10 AM, a lowest point of 29.98inHg at 5 PM with an avg 30.02inHg.
Centralia, IL Weather – 9-8 – Sunny
102° / 68°
Sunny
Bright and sunny conditions in Centralia, with a high of 102°F and a low of 68°F. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 13mph on average and gusts of 31.5mph at 11 PM. Humidity levels should be comfortable, sitting around 44% on average, the maximum being 67% at 2 AM and 23% being its lowest at 4 PM. Barometric pressure is its highest of 30.09inHg at 8 AM, a lowest point of 29.94inHg at 4 PM with an avg 30.02inHg.
Centralia, IL Weather – 9-9 – Sunny
107° / 80°
Sunny
Daytime highs will reach 107°F with lows dropping to 80°F in Centralia, where it will be sunny. Rainfall predicted to have a 57% chance with an estimated 0.1in. Wind will be moderate, blowing around 15mph on average and gusts of 34.2mph at 1 AM. Humidity levels should be comfortable, sitting around 43% on average, the maximum being 65% at 7 AM and 19% being its lowest at 4 PM. Barometric pressure is its highest of 30.06inHg at 10 AM, a lowest point of 29.94inHg at 4 PM with an avg 30inHg.

Currently

Clear 81°F
29.91 inHg.
Barometer
67%
Humidity
SSW 15.1 mph
Wind
Clear

5 Day Forecast Nearby

More Local Information

Bookmark and Share

Get the LocalConditions.com App on Google Play
Sign up for a membership to go Ad free

Centralia Community Weather Reports

Write your own Centralia, IL report, forecast, or traffic update:


Will not be posted, shared or used for marketing!

Please note by clicking on "Post" you acknowledge that you have read our Privacy Policy and Terms of Service and the Centralia, IL report and/or forecast you are posting is in compliance with such terms. If you are under 18, do not submit this form. Be respectful! Inappropriate content will be removed by a moderator.