Big Sky Weather Logo

BigSkyWeather

Montana's Premier Weather Service

MONTANA WEATHER INSIGHTS & ANALYSIS
Montana Winter Driving: Using Highway Cameras and Weather Data for Safe Travel

Montana Winter Driving: Using Highway Cameras and Weather Data for Safe Travel

Essential tips for winter driving in Montana, including how to use MDT highway cameras, interpret weather forecasts, and plan safe routes during winter storms.

Montana’s winter roads present unique challenges. With over 70,000 miles of roadway spanning diverse terrain from mountain passes to prairie highways, knowing how to check conditions before you travel can be the difference between a safe journey and a dangerous situation.

Before You Leave: Essential Pre-Trip Checks

1. Check Real-Time Highway Camera Feeds

BigSkyWeather integrates 115 Montana highway cameras from MDT’s Road Weather Information System (RWIS). These cameras update every 30 minutes and show:

  • Current road surface conditions
  • Visibility levels
  • Recent snow accumulation
  • Ice formation on bridges

Pro Tip: Check cameras at your starting point, destination, and all major intersections along your route.

View Highway Cameras →

2. Review Weather Forecasts for Your Route

Don’t just check weather for your destination – check every city along your route:

Example: Billings to Missoula via I-90
✓ Billings weather
✓ Livingston weather (wind tunnel area)
✓ Bozeman weather
✓ Butte weather (high elevation)
✓ Deer Lodge weather
✓ Missoula weather

Our Montana Weather Dashboard shows conditions for all major cities in one view.

3. Monitor Road Condition Reports

Montana’s 511 system provides:

  • Road closure information
  • Construction updates
  • Chain requirements
  • Accident reports

Call 511 or visit MDT 511 Travel Info

Montana’s Most Challenging Winter Drives

I-90: Livingston to Bozeman

Why It’s Challenging:

  • Extreme crosswinds (80+ mph gusts)
  • Rapid weather changes
  • High accident rate in winter

What to Watch:

  • Wind advisories for high-profile vehicles
  • Blowing snow reducing visibility
  • Ice forming on bridge overpasses

Camera Checkpoints:

  • Livingston I-90 cameras
  • Bozeman Pass cameras

I-15: Helena to Great Falls

Why It’s Challenging:

  • Open prairie exposure
  • Frequent winter storms
  • Ground blizzard conditions

What to Watch:

  • Temperature drops (flash freezing)
  • Visibility below 1/4 mile
  • Chinook winds (rapid ice formation)

US-93: Missoula to Kalispell

Why It’s Challenging:

  • Evaro Hill grade
  • Lake effect snow from Flathead Lake
  • Mountain passes

What to Watch:

  • Elevation changes (temperature variations)
  • Snow squalls near Flathead Lake
  • Ice on shaded curves

Reading Highway Camera Images

Understanding what you’re seeing in camera feeds:

Good Conditions

  • Pavement clearly visible
  • Lane markings distinct
  • No visible moisture
  • Clear visibility to horizon

Caution Conditions

  • Wet pavement (black ice risk)
  • Patchy snow coverage
  • Reduced visibility
  • Blowing snow visible

Dangerous Conditions

  • Complete snow coverage
  • No visible lane markings
  • Whiteout conditions
  • Ice glaze visible

Understanding Montana Winter Weather Terms

Wind Chill: Apparent temperature based on air temperature and wind speed. At -40°F wind chill, exposed skin can freeze in 10 minutes.

Temperature Inversion: When cold air is trapped near the surface under warm air. Creates persistent fog and ice fog.

Black Ice: Transparent ice on roadways, nearly invisible. Forms when:

  • Temperature drops below freezing after rain
  • Chinook winds melt snow, then refreeze
  • Fog freezes on cold pavement

Ground Blizzard: High winds lift existing snow, creating whiteout conditions even with clear skies above.

Lake Effect Snow: Heavy, localized snow downwind of Flathead Lake and Fort Peck Reservoir.

Graupel: Small snow pellets (soft hail) that can accumulate like ball bearings on roads.

When NOT to Travel

Postpone your trip if:

  1. Winter Storm Warning is in effect for your route
  2. Wind speeds exceed 45 mph (especially on I-90, I-15)
  3. Visibility below 1/4 mile reported at any point
  4. Multiple accidents reported on your route
  5. Road closures at any segment
  6. Temperature below -20°F without emergency preparation

Essential Winter Vehicle Kit

Keep these items in your vehicle November through April:

Survival Gear

  • Warm blankets (wool or synthetic)
  • Extra winter clothing and boots
  • High-calorie snacks and water
  • First aid kit
  • Flashlight with extra batteries

Vehicle Supplies

  • Ice scraper and snow brush
  • Small shovel
  • Kitty litter or sand (traction)
  • Jumper cables
  • Tow strap
  • Tire chains (know how to install BEFORE you need them)

Communication

  • Fully charged cell phone
  • Portable phone charger
  • Emergency contact list (printed)

Montana Highway Terminology

Chain Law: When signs read “Chains Required” or “Traction Devices Required”

  • All vehicles (except 4WD/AWD) must have chains
  • 4WD/AWD must carry chains
  • Rental cars: Check if chains are provided

Rolling Road Closure: Law enforcement stops traffic until conditions improve

  • Can last hours
  • Turn off engine periodically to conserve fuel
  • Stay with your vehicle

Using BigSkyWeather for Trip Planning

Our platform provides integrated travel planning tools:

1. Route Weather View

Check weather for all cities along major Montana highways:

  • I-90: Billings ↔ Missoula
  • I-15: Great Falls ↔ Butte
  • US-93: Kalispell ↔ Missoula
  • US-2: Kalispell ↔ Glasgow

2. Highway Camera Network

View live images from 115 RWIS cameras statewide, organized by route.

3. Hourly Forecasts

See hour-by-hour temperature, wind, and precipitation for the next 48 hours.

Plan Your Trip →

If You Get Stranded

DO:

  • Stay with your vehicle
  • Run engine 10 minutes per hour for heat
  • Keep exhaust pipe clear of snow
  • Tie bright cloth to antenna or door
  • Call 911 if in danger

DON’T:

  • Leave your vehicle to seek help
  • Over-exert yourself in cold
  • Consume alcohol (false warmth sensation)
  • Fall asleep without heat source

Weather Patterns That Improve Conditions

Not all winter weather is bad for driving:

Chinook Winds - Can clear highways rapidly, but:

  • Create icy conditions as snow melts and refreezes
  • Bring high winds (dangerous for high-profile vehicles)

Temperature Above 32°F - Generally safer, except:

  • Melting snow can cause slush (hydroplaning risk)
  • Refreezing at night creates black ice

Clear, Calm Days - Best conditions, but:

  • Morning frost on bridges
  • Wind can pick up suddenly

Resources for Safe Winter Travel

Before Your Trip

During Your Trip

  • Call 511 - Road condition updates
  • Highway cameras every 30-50 miles on major routes
  • Weather radio (NOAA Weather Radio frequencies)

Emergency

  • 911 - Life-threatening emergencies
  • Montana Highway Patrol - *611 from cell phone
  • Local Sheriff - Non-emergency assistance

Montana Winter Driving Laws

Required by Law:

  • Headlights on when wipers are on
  • Adequate tread depth (minimum 2/32”)
  • Clear all windows of ice/snow

Chain Laws:

  • Commercial vehicles: Must carry chains October 1 - May 31
  • All vehicles: Must comply when chain law in effect

Penalties:

  • Failure to comply with chain law: Up to $500 fine
  • Following too close (contributes to pileups): $50-$100 fine

The Bottom Line

Montana winter driving is manageable with preparation and good information. Use available tools – highway cameras, weather forecasts, and road condition reports – to make informed decisions.

Remember: No appointment, meeting, or destination is worth risking your life. When conditions are bad, delay your trip. Montana will still be here when the storm passes.

Check current highway conditions and camera feeds on our Montana Travel Page.

Stay safe out there, and as we say in Montana: “When in doubt, don’t go out.”

Back to All Articles