Water Temperature of the Tualatin River in West Linn, OR

Current Water Temperature

51.8°F

Measurement Time: Friday, November 21, 2025, 12:00 AM PST

Temperature Locations

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Local Points of Interest

Oswego Dam

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Tualatin River

Station Name: TUALATIN RIVER AT OSWEGO DAM, NEAR WEST LINN, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 151 feet / 46 meters

Nearest Address:
967 SW Borland Rd
West Linn, OR 97068
Clackamas County

GPS Coordinates: 45.35650877, -122.6850937

Nearby Water Temperatures

Fanno Creek, Tigard, OR (4.7 mi)
Clackamas River, Oregon City, OR (5.5 mi)
Johnson Creek, Milwaukie, OR (7.0 mi)
Crystal Springs Creek, Portland, OR (8.4 mi)
Fanno Creek, Beaverton, OR (8.4 mi)
Chicken Creek, Sherwood, OR (8.5 mi)
Tualatin River, Beaverton, OR (10.7 mi)
Willamette River, Portland, OR (11.1 mi)
Johnson Creek, Portland, OR (12.0 mi)
Kelley Creek, Portland, OR (12.3 mi)
Beaverton Creek, Beaverton, OR (12.8 mi)
Willamette River, West Linn, OR (14.3 mi)
Johnson Creek, Gresham, OR (15.6 mi)
Rock Creek, Hillsboro, OR (16.0 mi)
Clackamas River, Estacada, OR (16.6 mi)

Weather for West Linn, Oregon

Current Weather

37°F
Mist
Conditions: Mist
Humidity: 100%
Feels Like: 36.1°F
Wind: E 2.2 mph
Wind Gusts: 6.7 mph
Pressure: 30.29 in
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 2 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Fri
H: 58°F
L: 38°F
Cloudy
Sat
H: 43°F
L: 38°F
Moderate rain
Sun
H: 48°F
L: 39°F
Moderate rain
Mon
H: 45°F
L: 37°F
Patchy rain nearby
Tue
H: 48°F
L: 37°F

Air Quality

AQI: 1 - Good
PM2.5: 12.35 μg/m3
PM10: 13.85 μg/m3
Carbon Monoxide: 351.85 μg/m3
Nitrogen Dioxide: 27.25 μg/m3
Sulphur Dioxide: 5.65 μg/m3
Ozone: 33 μg/m3

Astronomical

Sunrise: 7:18 AM
Sun Transit: 11:56 AM
Sunset: 4:35 PM
Daylight: 9 hrs 17 mins
Moonrise: 9:09 AM
Moon Transit: 1:08 PM
Moonset: 5:05 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

8:33 PM - 11:03 PM
12:38 AM - 3:08 PM

Minor Periods

4:35 PM - 6:05 PM
8:39 AM - 10:09 AM

Action Rating: 4 out of 5

Dense Fog Advisory issued November 21 at 1:13AM PST until November 21 at 10:00AM PST by NWS Portland OR

Effective: Fri November 21, 2025, 1:13 AM
Expires: Fri November 21, 2025, 10:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Central and Southern Willamette Valley, Portland Metro Lowlands, Greater Vancouver Metro, Lower Columbia River and Cowlitz River Valleys, and Portland West Hills and Chehalem Mountain. * WHEN...Until 10 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you. If driving, slow down and leave plenty of distance ahead of you. Pedestrians and cyclists should wear bright or reflective clothing to increase the chances of being seen by others in poor visibility conditions.
Friday, November 21, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 45.5°F
Average Humidity: 83%
Chance of Rain: 0%
Wind: 2.7 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 14.8 μg/m3
PM10: 15.8 μg/m3
Carbon Monoxide: 370.53 μg/m3
Nitrogen Dioxide: 36.8 μg/m3
Sulphur Dioxide: 4.04 μg/m3
Ozone: 15.32 μg/m3

Astronomical

Sunrise: 7:18 AM
Sun Transit: 11:56 AM
Sunset: 4:35 PM
Daylight: 9 hrs 17 mins
Moonrise: 9:09 AM
Moon Transit: 1:08 PM
Moonset: 5:05 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

8:33 PM - 11:03 PM
12:38 AM - 3:08 PM

Minor Periods

4:35 PM - 6:05 PM
8:39 AM - 10:09 AM

Action Rating: 4 out of 5

Saturday, November 22, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 40.3°F
Average Humidity: 96%
Chance of Rain: 0%
Wind: 3.1 mph
UV Index: 0.2

Air Quality

AQI: 2 - Moderate
PM2.5: 20.83 μg/m3
PM10: 22.19 μg/m3
Carbon Monoxide: 568.65 μg/m3
Nitrogen Dioxide: 39.59 μg/m3
Sulphur Dioxide: 5.64 μg/m3
Ozone: 12 μg/m3

Astronomical

Sunrise: 7:19 AM
Sun Transit: 11:57 AM
Sunset: 4:35 PM
Daylight: 9 hrs 15 mins
Moonrise: 10:05 AM
Moon Transit: 2:00 PM
Moonset: 5:56 PM
Moon Phase: New
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

9:25 PM - 11:55 PM
1:30 PM - 4:00 PM

Minor Periods

5:26 PM - 6:56 PM
9:35 AM - 11:05 AM

Action Rating: 3 out of 5

Sunday, November 23, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 43.7°F
Average Humidity: 94%
Chance of Rain: 89%
Wind: 8.1 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 16.42 μg/m3
PM10: 17.76 μg/m3
Carbon Monoxide: 348.45 μg/m3
Nitrogen Dioxide: 26.65 μg/m3
Sulphur Dioxide: 3.41 μg/m3
Ozone: 22.24 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 11:57 AM
Sunset: 4:34 PM
Daylight: 9 hrs 13 mins
Moonrise: 10:53 AM
Moon Transit: 2:52 PM
Moonset: 6:55 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:22 PM - 4:52 PM

Minor Periods

6:25 PM - 7:55 PM
10:23 AM - 11:53 AM

Action Rating: 3 out of 5

Monday, November 24, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 40.3°F
Average Humidity: 89%
Chance of Rain: 84%
Wind: 8.5 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 5.33 μg/m3
PM10: 6.95 μg/m3
Carbon Monoxide: 276.57 μg/m3
Nitrogen Dioxide: 5.69 μg/m3
Sulphur Dioxide: 1.68 μg/m3
Ozone: 60.2 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 11:57 AM
Sunset: 4:33 PM
Daylight: 9 hrs 11 mins
Moonrise: 11:31 AM
Moon Transit: 3:43 PM
Moonset: 8:01 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:13 PM - 5:43 PM

Minor Periods

7:31 PM - 9:01 PM
11:01 AM - 12:31 AM

Action Rating: 2 out of 5

Tuesday, November 25, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 40.3°F
Average Humidity: 86%
Chance of Rain: 87%
Wind: 2.7 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 11.2 μg/m3
PM10: 12.35 μg/m3
Carbon Monoxide: 332.77 μg/m3
Nitrogen Dioxide: 31.76 μg/m3
Sulphur Dioxide: 3.17 μg/m3
Ozone: 19 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 11:57 AM
Sunset: 4:32 PM
Daylight: 9 hrs 9 mins
Moonrise: 12:02 AM
Moon Transit: 4:32 PM
Moonset: 9:11 PM
Moon Phase: Waxing Crescent
Moon Illumination: 25.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:02 PM - 6:32 PM

Minor Periods

8:41 PM - 10:11 PM
11:32 AM - 1:02 PM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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