DriveWindow route answer
How does weather change by season between St. Louis and Chicago?
Storms, fog, and wind can vary across the central Illinois corridor. The main seasonal conditions to compare along I-55 through Illinois are heavy rain, strong crosswinds, and fog near lowlands. Check the full corridor close to departure rather than relying on one destination forecast.
Route facts
St. Louis → Chicago
- Distance
- 300 miles
- Typical drive
- 4.5 hours
- Planning baseline
- Late morning
- Main weather risks
- heavy rain · strong crosswinds · fog near lowlands
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Seasonal planning
How conditions change through the year
Storms, fog, and wind can vary across the central Illinois corridor.
- heavy rain
- strong crosswinds
- fog near lowlands
Storms, fog, and wind can vary across the central Illinois corridor.
Compare how heavy rain, strong crosswinds, and fog near lowlands overlaps with the hours you expect to be on the road.
What to check before leaving
Storms, fog, and wind can vary across the central Illinois corridor. Key weather factors: heavy rain, strong crosswinds, fog near lowlands.
- heavy rain
- strong crosswinds
- fog near lowlands
Route planning answers
Common questions about this drive
Plan the drive
Route weather planning guides
Start with the question that matches your trip, then finish the current check in DriveWindow.
Sources and methodology
How this answer is produced
Website drive time and distance are static planning baselines. In the app, routing-provider travel time can account for traffic and helps time each weather segment; departure options are then compared by weather risk for your date.
US National Weather Service Environment and Climate Change Canada Route weather methodology Data-source policy
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