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Radar, DOT cameras and live pavement conditions on the 308 miles of I-5 in Oregon — plus closures, road work and city-by-city weather across the state.
Updated Sep 11, 2026 12:33 AM UTC · Mostly dry
Lowest 76°F near Portland, Oregon · Highest wind 11 mph near Medford, Oregon
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I-5 runs 308 miles across Oregon. It passes Medford, Portland and Eugene. The high crossing on this stretch is Siskiyou Summit at 4,310 ft, which is where winter closes it first.
Weather data from Sep 11, 2026 12:33 AM UTC
Dry
I-5 crosses 308 miles of Oregon, between the California line and the Washington line. That is 22% of I-5's 1,381 miles.
Inside Oregon it meets I-84 West at Portland.
It carries Siskiyou Summit at 4,310 ft, where the weather at the summit is not the weather on the approach.
No full closures are reported on I-5 in Oregon as of Sep 11, 2026 12:33 AM UTC, and no lane closures or roadworks either. Always check with the responsible state DOT before setting off.
| Place | Snow a year | Snow days | Freezing nights | Freeze–thaw days | First freeze | Last freeze | Days over 90°F |
|---|---|---|---|---|---|---|---|
| Medford | 4.1" | 5.1 | 55.1 | 54.5 | Oct 28 | Apr 13 | 53.9 |
| Portland | 4.3" | 4.4 | 29.6 | 27.8 | Nov 17 | Mar 16 | 12 |
| Eugene | 4.9" | 3 | 50.8 | 48.8 | Oct 22 | Apr 18 | 14 |
NOAA 1991–2020 Climate Normals, from 3 weather stations in Oregon. A dash is a figure that station does not report, not a zero.
Every figure above is a town or a city. The summits are a different climate: Cabbage Hill (Deadman Pass, I-84), Santiam Pass, Siskiyou Summit have its own page with the readings at the top and a six-day summit forecast.
From Ashland to Portland, with the position of each town measured along this stretch itself — counted from the Ashland end, not from a state milepost, so it will not match the numbers on the signs.
Places from the US Census Gazetteer and population estimates, both public domain; distances measured along this page's own route geometry.
Summaries fetched Sep 10, 2026 12:06 PM UTC
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