Plymouth, MI → St. Louis, MO
438 mi · 8h 45m (driving)
Current Risk
High Risk
Flood Warning in effect — consider delaying
Plymouth
81°
DeKalb County
79°
Tippecanoe County
82°
Moultrie County
82°
St. Louis
90°
Trip Briefing
4 segments · 438 mi · 8h 45m
Weather
☁️ Overcast
79°F, wind 2 mph
Rest Stops
11
Restrooms, Truck svc
Clear driving conditions expected
Rest stops in this segment:
- ● Northfield Church Rest Area 814 🚻
- ● Rest Area 🚻
- ● Love's Travel Stop
Weather May Slow Traffic
Active weather advisory — expect slower travel
Traffic Cameras
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Images are snapshots updated periodically by state DOTs. Timestamps shown in images indicate when each photo was captured.
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I-70 WB at Cumberland Road Rest Area (Front) (#7020)
IL · WB
I-70 at US 51 (Vandalia) (#7027)
IL · SB
I-70 at Mulberry Grove (#7022)
IL · WB
I-70 at Mile Post 16.8 (#8079)
IL · WB
I-70 at Industrial Dr. (#8017)
IL · WB
I-70 at Stan Musial Bridge (#8074)
IL · WB
Rest Stops Along Your Route
70 stops available
Swipe to see moreShowing 1-2 of 70
Get Weather Alerts for This Route
We'll notify you when conditions change before your trip. Never drive into a surprise storm again.
⚡ Recent Weather Events on This Route
Premium users received alerts for these conditions:
- 🌧️Aug 11: Rain advisory for afternoon departures
- ❄️Aug 9: Snow expected at higher elevations - consider earlier departure
- 🌫️Aug 6: Dense fog warning for morning travel
Don't miss the next alert →
Driving from Plymouth, MI to St. Louis, MO covers 438 miles in roughly 8h 45m of drive time, crossing state lines. We track 6 live traffic cameras, 70 rest areas and 3 active weather alerts along this corridor so you can plan around them. Most drivers do this trip in one day; weather along the route matters more than the forecast at either endpoint, since you'll cross several climate zones.
7-Day Driving Outlook
Today
Aug 13
81° / 81°
No precip
Tomorrow
Aug 14
84° / 69°
No precip
Sat
Aug 15
83° / 66°
No precip
Sun
Aug 16
84° / 71°
No precip
Mon
Aug 17
79° / 66°
No precip
Tue
Aug 18
80° / 65°
No precip
Wed
Aug 19
82° / 66°
No precip
🗓️ Weekend Outlook
Saturday
Good to Go☁️ Overcast at origin, ☀️ Clear sky at destination
Sunday
Use Caution🌧️ Heavy rain → ⛅ Partly cloudy. Use caution.
Plan This Route
Get hour-by-hour weather forecasts, real-time traffic, and find the optimal departure time.
🚗 Live traffic included
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Current Conditions
Plymouth, MI
81°F
Wind: 3 mph
St. Louis, MO
90°F
Wind: 4 mph
Weather data updated in real-time
Driving from Plymouth, MI to St. Louis, MO
The 438-mile drive from Plymouth, Michigan to St. Louis, Missouri takes approximately 8h 45m under normal conditions. Weather along this route can vary significantly, especially across open plains where severe weather and high winds can develop quickly. Route Outlook helps you find the safest time to travel by showing you weather conditions at every point along your route, timed to when you'll actually be there.
This long-distance route crosses state lines from Michigan into Missouri, connecting Plymouth and St. Louis. Covering 438 miles, this is a substantial drive that will take you through diverse terrain and weather patterns. Planning ahead with real-time conditions along the entire route — not just at your destination — is essential for a safe trip.
Common Weather Hazards on This Route
- Winter storms and heavy snowfall (November through April)
- Black ice on mountain passes and bridges
Seasonal Driving Considerations
The Midwest corridor of this route is susceptible to rapid weather changes. Severe thunderstorms and tornadoes are a real threat from April through June, while winter brings heavy lake-effect snow, ice storms, and dangerously low wind chill. Flat terrain means high crosswinds can affect vehicle stability year-round, especially for taller vehicles. Spring flooding can also close highway underpasses and low-lying road segments.
Best Time to Drive Plymouth to St. Louis
For medium-distance drives like this 438-mile route, consider starting in the early morning to arrive before afternoon storms develop. Check the 7-day forecast above to find a day with favorable conditions along the entire route.
Driving Strategy
A 438-mile drive from Plymouth to St. Louis takes a significant part of the day. Plan at least one fuel and rest stop along the way. If your route crosses elevation changes or state lines, expect weather conditions to shift mid-trip. Monitor the segment-by-segment forecast rather than just checking destination weather. Starting early in the morning typically avoids afternoon storm development and rush-hour congestion near urban areas.
Pro Tip
Use Route Outlook's departure optimizer to find the best time to leave. Our 4D trajectory engine considers weather at each point along your route at the exact time you'll be there — not just at your destination. It also integrates live data from traffic cameras, DOT 511 feeds, and road weather sensors.
Frequently Asked Questions
How long is the drive from Plymouth to St. Louis?
The drive is approximately 438 miles and takes about 8h 45m under normal traffic and weather conditions. Severe weather can add significant time to your trip.
What's the best day to drive this route?
Based on current forecasts, Tuesday, Aug 18 looks ideal. Low chance of precipitation with manageable conditions
Is it safe to drive from Plymouth to St. Louis today?
Current conditions show high risk along this route. Conditions look favorable for travel. Always stay alert and adjust speed for changing conditions.
Are there rest areas on the Plymouth to St. Louis route?
Yes, there are 70 rest areas along this route. Facilities include restrooms, parking, and in some cases picnic areas and vending machines. Rest stops are spaced throughout the drive, so you'll never be too far from a break.
Can I see live traffic cameras on this route?
Yes, Route Outlook shows 6 live traffic cameras along this route, sourced from state DOT feeds. You can check road visibility, traffic flow, and pavement conditions in real time before and during your drive.
What highways does this route use?
This route primarily uses I-70. Conditions can vary between highway segments, so check live camera feeds and road condition reports for each stretch before departing.
Are there any road closures on this route right now?
No significant incidents or road closures are currently reported along this route. Conditions can change quickly — this page updates automatically with the latest data from state DOT 511 systems.
Related Driving Guides
10 Essential Winter Driving Tips for Long Road Trips
Planning a winter road trip? Here are the essential safety tips to help you navigate snow, ice, and cold weather conditions.
🧊Black Ice: The Invisible Killer on Winter Roads
Black ice forms when rain or melting snow refreezes on cold road surfaces. Here's how to spot the conditions that create it.
🛡️Road Safety Features: Real-Time Conditions for Your Route
Real-time traffic incidents from 12 states, highway message signs, road conditions, and 25,000+ traffic cameras--integrated into your route planning.
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