Southern Oregon Winter Storm Preparedness Guide

Ice storms and mountain snow can disrupt travel across Southern Oregon. Here's your complete guide to preparing for winter weather in the region.

Southern Oregon's Winter Weather Hazards

Unlike the Pacific Northwest's "Portland-style" winter (cold rain, rare snow), Southern Oregon has three distinct winter weather patterns depending on where you are:

**Rogue Valley (Medford/Grants Pass)**: Dense tule fog is the primary winter hazard — not snow. Visibility can drop to near zero for days at a time. Freezing fog creates ice on bridges and overpasses even when air temperatures seem only marginally below freezing.

**Umpqua Valley (Roseburg area)**: Mostly rain with occasional frost. The lower elevation and coastal influence means true winter storms are rarer here.

**Mountains and Passes**: The real danger. I-5 over the Siskiyou Pass, Hwy 138 to Diamond Lake, and all Cascade pass routes can close or require chains with little warning.

**Klamath Basin**: Cold, dry, and snowy. Road ice is a constant winter concern.

Preparing Your Vehicle

Southern Oregon's "occasional" winter hazards are precisely why preparation matters more here than in places with consistent snow — residents are often caught off-guard by sudden ice events.

1. **All-season or winter tires**: Required on many Oregon mountain passes; highly recommended everywhere

2. **Chains in your trunk**: Required by law in some areas; chains specific to your tire size

3. **Emergency kit**: Blanket, water, snacks, flashlight, jumper cables, ice scraper

4. **Check ODOT TripCheck**: tripcheck.com before any mountain travel

At Home

1. **Pipe insulation**: Exposed pipes in the Rogue Valley can freeze during cold snaps

2. **Generator or backup heat**: Power outages during ice storms can last days

3. **Emergency food and water**: 72-hour supply minimum

4. **Salt or sand**: For your driveway and walkways during icing events

Staying Informed

Check our [Southern Oregon Weather Alerts](/alerts) for current NWS watches, warnings, and advisories. Sign up for your county's emergency notification system:

• Douglas County: www.co.douglas.or.us/emergency

• Jackson County: www.jacksoncountyor.gov/Emergency

• Josephine County: www.josephinecounty.net/emergency

Stay safe this winter season.