Station Name: JOHNSON CREEK AT MILWAUKIE, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 36 feet

Nearest Address:
2008 SE Milport Rd
Milwaukie, OR 97222
Clackamas County

GPS Coordinates: 45.452897, -122.6431496

Nearby Water Temperatures

Winter Weather Advisory issued April 1 at 9:50PM PDT until April 2 at 5:00PM PDT by NWS Portland OR

Effective: Wed April 1, 2026, 9:50 PM
Expires: Thu April 2, 2026, 1:00 PM

* WHAT...Snow above 3000 feet. Additional snow accumulations up to 4 to 6 inches. Winds gusting as high as 45 mph. * WHERE...In Oregon, North Oregon Cascades. In Washington, South Washington Cascades. * WHEN...Until 5 PM PDT Thursday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS...There is a 40-60% chance for snowfall rates exceeding 1 inch per hour along highway 26 near Government Camp, with the highest chances occurring between 3-6 AM Thursday.

Have a winter emergency driving kit readily available. Common items to include: flashlight, batteries, blankets, a shovel, water, non-perishable food items, tire chains, etc. Be aware that walking surfaces may be slick. Walk with extra care. For the latest road conditions and chain restrictions in Oregon, call 5 1 1, or visit: www.tripcheck.com. For the latest road conditions and chain restrictions in Washington, visit: wsdot.com/travel/real-time/map

Frost Advisory issued April 1 at 9:44PM PDT until April 3 at 10:00AM PDT by NWS Portland OR

Effective: Wed April 1, 2026, 9:44 PM
Expires: Thu April 2, 2026, 9:45 AM

* WHAT...Temperatures as low as 33 to 36 will result in frost formation. * WHERE...Northern and Central Coast Range Valleys and Mountains of Oregon, Lower Columbia River and Cowlitz River Valleys, Portland Metro Hills, Central Willamette Valley, Tualatin Valley, West Columbia River Gorge of Oregon above 500 ft, Clackamas County Cascade Foothills, Willapa Hills, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...From 9 PM Thursday to 10 AM PDT Friday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures. Consider temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants.

Winter Storm Warning issued April 1 at 9:50PM PDT until April 2 at 5:00PM PDT by NWS Portland OR

Effective: Wed April 1, 2026, 9:50 PM
Expires: Thu April 2, 2026, 1:00 PM

* WHAT...Heavy snow. Additional snow accumulations between 6 and 12 inches. Winds gusting as high as 35 mph. * WHERE...Cascades of Lane County and Cascades of Marion and Linn Counties. * WHEN...Until 5 PM PDT Thursday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS...There is a 60-80% chance for snowfall rates exceeding 1 inch per hour along Santiam and Willamette Passes, with the highest chances occurring between between 2-8 AM Thursday.

Consider postponing travel until weather conditions improve. If you must travel, be sure to slow down and allow extra time. If your car becomes trapped in deep snow, be sure to keep your car off to stay safe from potential carbon monoxide poisoning. If you are using a generator, be sure to keep it outdoors and away from windows and vents. Be aware that walking surfaces may be slick. Walk with extra care. Backcountry recreation is not advised.

Freeze Watch issued April 1 at 9:44PM PDT until April 3 at 10:00AM PDT by NWS Portland OR

Effective: Wed April 1, 2026, 9:44 PM
Expires: Thu April 2, 2026, 9:45 AM

* WHAT...Sub-freezing temperatures as low as 29 to 32 possible. * WHERE...South Willamette Valley, Upper Hood River Valley, Cascade Foothills of Marion and Linn Counties, and Lane County Cascade Foothills. * WHEN...From Thursday evening through Friday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures. Consider temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants.