Mount Vernon, TX → San Antonio, TX
322 mi · 6h 26m (driving)
Current Risk
Medium Risk
Heat Advisory in effect along your route
Mount Vernon
90°
Navarro County
96°
Williamson County
96°
San Antonio
92°
Trip Briefing
3 segments · 322 mi · 6h 26m
Weather
☀️ Clear sky
96°F, wind 15 mph
Rest Stops
20
Truck svc, Restrooms, water
Clear driving conditions expected
Rest stops in this segment:
- ● Love's Travel Stop
- ● Rest Area
- ● Pilot Travel Center
Delays Expected
1 major incident reported · 38 construction zones on route
38 Construction Zones on Route
Construction on FM0021
Construction on IH0030
Construction on IH0030
Construction on FM1777
Construction on FM0035
Construction on IH0030
+ 32 more zones along the route — see map for full list
Traffic Cameras
See recent road conditions along your route
Images are snapshots updated periodically by state DOTs. Timestamps shown in images indicate when each photo was captured.
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Selected Route
Via I-30 West → I-35E South → ... → I-37 North → US-281
Cameras shown are along this computed route
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Rest Stops Along Your Route
52 stops available
Swipe to see moreShowing 1-2 of 52
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 →
The 322-mile full-day drive from Mount Vernon to San Antonio stays within TX and takes about 6h 26m without stops. We track 12 live traffic cameras, 52 rest areas, 1 reported incident and 1 active weather alert 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
100° / 90°
No precip
Tomorrow
Aug 14
100° / 80°
No precip
Sat
Aug 15
100° / 81°
No precip
Sun
Aug 16
99° / 83°
No precip
Mon
Aug 17
101° / 81°
No precip
Tue
Aug 18
103° / 83°
No precip
Wed
Aug 19
101° / 82°
No precip
🗓️ Weekend Outlook
Saturday
Good to Go⛅ Partly cloudy at origin, 🌤️ Mainly clear at destination
Sunday
Good to Go⛅ Partly cloudy at origin, 🌤️ Mainly clear at destination
Plan This Route
Get hour-by-hour weather forecasts, real-time traffic, and find the optimal departure time.
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Current Conditions
Mount Vernon, TX
90°F
Wind: 13 mph
San Antonio, TX
92°F
Wind: 11 mph
Weather data updated in real-time
Driving from Mount Vernon, TX to San Antonio, TX
The 322-mile drive from Mount Vernon, Texas to San Antonio, Texas takes approximately 6h 26m under normal conditions. Weather along this route can vary significantly, especially along coastal regions where fog and marine weather can impact visibility. 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 stays within Texas, connecting Mount Vernon and San Antonio. Covering 322 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
- Severe thunderstorms and flash flooding (spring and summer)
- Hurricane and tropical storm impacts (June through November)
Seasonal Driving Considerations
Coastal weather on this route can shift quickly. Marine fog is common during morning hours, especially in spring and fall, reducing visibility to near zero. Hurricane season (June through November) can bring extended road closures and dangerous conditions. During fair weather, coastal routes offer scenic driving — but always verify conditions with live traffic cameras before heading out.
Best Time to Drive Mount Vernon to San Antonio
For medium-distance drives like this 322-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 322-mile drive from Mount Vernon to San Antonio 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 Mount Vernon to San Antonio?
The drive is approximately 322 miles and takes about 6h 26m 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. Clear conditions expected along the entire route
Is it safe to drive from Mount Vernon to San Antonio today?
Current conditions show medium risk along this route. Conditions look favorable for travel. Always stay alert and adjust speed for changing conditions.
Are there rest areas on the Mount Vernon to San Antonio route?
Yes, there are 52 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 12 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 Other. 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?
There is currently 1 active incident along this route that may affect your drive. Check the incident details above for specific locations and expected durations.
Related Driving Guides
Finding the Safest Time to Drive: A Data-Driven Approach
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🛣️How to Check Road Conditions Before a Trip: All Your Options
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🧠Route Intelligence: The Smarter Way to Plan Road Trips
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Don't Drive Blind Into Weather
Route Outlook shows you conditions at every point along your route—at the exact time you'll be there.
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