Houston to Austin — Weather & Driving Conditions
Driving from Houston, TX to Austin, TX? This 165-mile route follows US-290, TX-71. TripCaptain checks the weather at every stop along the way — not just at each end — so you can see where conditions change before you pick a departure time.
What to watch for on this route
TripCaptain flags black ice, dense fog, heavy snow, high wind, heavy rain, and low visibility segment by segment between Houston, TX and Austin, TX, and gives the trip a clear Hazard Score™ — a 0-100 read where higher is safer.
- Flash Flooding: The Brazos and Colorado River crossings and low-water spots along US-290 flood fast in heavy rain — this is squarely inside Texas's 'Flash Flood Alley'.
- Severe Thunderstorm: Spring supercells crossing the coastal plain bring large hail, damaging winds, and the occasional tornado, with intense rainfall rates that overwhelm drainage.
- Dense Fog: Warm Gulf moisture over cool ground produces thick advection fog on US-290, especially on winter and early-spring mornings west of Houston.
When to go, season by season
- Spring (Mar–May): Peak severe-weather season. Supercells, large hail, and flash flooding are all possible — check radar before departing and never drive into water over the road.
- Summer (Jun–Aug): Hot, with isolated afternoon storms. Extreme heat stresses tires and cooling systems; carry water and check tire pressure before the drive.
- Fall (Sep–Nov): Generally good driving. A landfalling Gulf tropical system or its remnants can bring heavy rain and flooding in September and October.
- Winter (Dec–Feb): Mostly mild. Dense morning fog is common; a rare hard freeze or ice event can briefly make bridges and overpasses treacherous.
Pick the safest time to leave
Compare departure windows for Houston to Austin and choose the one with the lowest risk and the arrival time you want.
Fuel, EV range, and rest stops
See a weather-adjusted fuel or EV energy estimate for the drive, sensible break points across the 165 miles, and a packing list matched to the conditions ahead.