The app this map came from
Weather Navigation carries the same radar and road-surface data on Apple CarPlay and Android Auto, with a weather-aware route planner, storm-cell tracking and radar that refreshes every two minutes over the US.
Scan to install Weather Navigation
Radar, DOT cameras and live pavement conditions at the summit of Santiam Pass and on both climbs — plus closures, road work and who sets chain control on US 20.
Elevation 4,817 ft · Updated Sep 14, 2026 8:18 PM PDT · Mostly dry
Lowest 50°F · Highest wind 6 mph
At the summit: Dry · 52°F · road surface est. 46°F · 2 mph wind · gusting 12 mph
Use Weather Navigation for your next Road Trip
Santiam Pass carries US 20 over the Cascade Range at 4,817 feet, between Sisters and the Willamette Valley. It is the main route between Bend and Salem, and snow, ice and low visibility restrict or close it repeatedly through the winter.
Weather data from Sep 14, 2026 8:18 PM PDT
Route geometry © openrouteservice.org · Map data © OpenStreetMap contributors
No full closures are reported on Santiam Pass as of Sep 14, 2026 8:18 PM PDT, and no lane closures or roadworks either. Always check with the responsible state DOT before setting off.
Chain and traction requirements on Santiam Pass are set by the state highway authority, and they are imposed and lifted through the day as a storm moves through. This page does not carry them — check tripcheck.com ↗ before you set off.
What this page can tell you is the surface at the summit, from radar and surface analysis: currently dry, with the road surface estimated at 46°F. The road surface figure is an estimate derived from air temperature, not a measurement — bridges and overpasses run colder than the number shown.
At the summit, 4,817 ft. Each day shows its warmest and coldest hour, and the worst driving conditions forecast anywhere in it — not the average, because the hour that closes a pass is the one worth knowing about.
Rest of today Sep 14
47°F 43°F
Dry
Wind to 2 mph
Tue Sep 15
64°F 41°F
Dry
Wind to 11 mph
Wed Sep 16
72°F 43°F
Dry
Wind to 8 mph
Thu Sep 17
78°F 45°F
Dry
Wind to 6 mph
Fri Sep 18
81°F 46°F
Dry
Wind to 10 mph
Sat Sep 19
78°F 46°F
Dry
Wind to 5 mph
Forecast, not a measurement — from the same weather service that draws this page's radar and road colors, model run 9 hours ago. Days run on Pacific time, the clock the pass keeps — not the reader's.
Photo from
Photo from
Photo from
Photo from
The same live radar and road-surface data as this map, on your phone and on Apple CarPlay or Android Auto.
Weather Navigation carries the same radar and road-surface data on Apple CarPlay and Android Auto, with a weather-aware route planner, storm-cell tracking and radar that refreshes every two minutes over the US.