Water Temperature of the Tualatin River in West Linn, OR

Current Water Temperature

46.0°F

Measurement Time: Friday, February 27, 2026, 3:00 AM PST

Temperature Locations

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Local Points of Interest

Oswego Dam

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

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 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 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 mi)
Clackamas River, Estacada, OR (16.6 mi)

Weather for West Linn, Oregon

Current Weather

45°F
Sunny
Sunny
44.9°F
45.9°F
76%
N 2.2 mph
2.6 mph
44.8°F
45.4°F
0 in
0%
9 mi
1029 mbar
2.3

Five Day Weather Forecast

Sunny
Fri
H: 55°F
L: 35°F
Mist
Sat
H: 55°F
L: 34°F
Cloudy
Sun
H: 59°F
L: 42°F
Sunny
Mon
H: 59°F
L: 35°F
Patchy rain nearby
Tue
H: 58°F
L: 40°F

Air Quality

AQI: 1 - Good
PM2.5: 12.95 μg/m3
PM10: 15.05 μg/m3
Carbon Monoxide: 496.85 μg/m3
Nitrogen Dioxide: 40.95 μg/m3
Sulphur Dioxide: 4.25 μg/m3
Ozone: 25 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 12:23 AM
Sunset: 5:55 PM
Daylight: 11 hrs 3 mins
Moonrise: 1:32 PM
Moon Transit: 9:43 PM
Moonset: 5:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.3%

Best Times for Fishing or Hunting

Major Periods

4:12 AM - 6:42 AM
9:13 PM - 11:43 PM

Minor Periods

1:02 PM - 2:32 PM
4:33 AM - 6:03 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued February 27 at 6:25AM PST until February 27 at 12:00PM PST by NWS Portland OR

Effective: Fri February 27, 2026, 6:25 AM
Expires: Fri February 27, 2026, 12:00 PM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Central Willamette Valley, Tualatin Valley, and Benton County Lowlands. * WHEN...Until noon PST today. * IMPACTS...Low visibility could make driving conditions hazardous.

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, February 27, 2026

Weather Forecast

Sunny
55°F
34.7°F
43.8°F
83%
0 in
0%
0%
3.1 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 16.13 μg/m3
PM10: 18.17 μg/m3
Carbon Monoxide: 384.69 μg/m3
Nitrogen Dioxide: 38.22 μg/m3
Sulphur Dioxide: 4.45 μg/m3
Ozone: 27.08 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 12:23 AM
Sunset: 5:55 PM
Daylight: 11 hrs 3 mins
Moonrise: 1:32 PM
Moon Transit: 9:43 PM
Moonset: 5:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.3%

Best Times for Fishing or Hunting

Major Periods

4:12 AM - 6:42 AM
9:13 PM - 11:43 PM

Minor Periods

1:02 PM - 2:32 PM
4:33 AM - 6:03 AM

Action Rating: 3 out of 5

Saturday, February 28, 2026

Weather Forecast

Mist
54.9°F
34°F
43.4°F
83%
0 in
0%
0%
4.7 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 10.86 μg/m3
PM10: 12.59 μg/m3
Carbon Monoxide: 272.29 μg/m3
Nitrogen Dioxide: 27.89 μg/m3
Sulphur Dioxide: 3.44 μg/m3
Ozone: 29.64 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 12:23 AM
Sunset: 5:57 PM
Daylight: 11 hrs 6 mins
Moonrise: 2:53 PM
Moon Transit: 10:38 PM
Moonset: 5:40 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.1%

Best Times for Fishing or Hunting

Major Periods

5:10 AM - 7:40 AM
12:00 AM - 12:00 AM

Minor Periods

2:23 PM - 3:53 PM
5:10 AM - 6:40 AM

Action Rating: 3 out of 5

Sunday, March 1, 2026

Weather Forecast

Cloudy
59°F
42.4°F
50.1°F
70%
0 in
0%
0%
2.9 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 15.27 μg/m3
PM10: 16.7 μg/m3
Carbon Monoxide: 389.69 μg/m3
Nitrogen Dioxide: 29.52 μg/m3
Sulphur Dioxide: 3.97 μg/m3
Ozone: 12.48 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 12:23 AM
Sunset: 5:58 PM
Daylight: 11 hrs 9 mins
Moonrise: 4:12 PM
Moon Transit: 11:29 PM
Moonset: 6:08 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.8%

Best Times for Fishing or Hunting

Major Periods

6:03 AM - 8:33 AM
12:00 AM - 12:00 AM

Minor Periods

3:42 PM - 5:12 PM
5:38 AM - 7:08 AM

Action Rating: 3 out of 5

Monday, March 2, 2026

Weather Forecast

Sunny
58.6°F
34.5°F
46.2°F
80%
0 in
0%
0%
2.9 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 12.15 μg/m3
PM10: 12.63 μg/m3
Carbon Monoxide: 399.43 μg/m3
Nitrogen Dioxide: 28.21 μg/m3
Sulphur Dioxide: 3.03 μg/m3
Ozone: 17.28 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:22 AM
Sunset: 6:00 PM
Daylight: 11 hrs 13 mins
Moonrise: 5:27 PM
Moon Transit: 12:00 AM
Moonset: 6:31 AM
Moon Phase: Full
Moon Illumination: 99.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:52 AM - 9:22 AM

Minor Periods

4:57 PM - 6:27 PM
6:01 AM - 7:31 AM

Action Rating: 5 out of 5

Tuesday, March 3, 2026

Weather Forecast

Patchy rain nearby
57.9°F
39.5°F
47.9°F
79%
0.03 in
82%
0%
9.8 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 12.34 μg/m3
PM10: 12.81 μg/m3
Carbon Monoxide: 355.83 μg/m3
Nitrogen Dioxide: 33.89 μg/m3
Sulphur Dioxide: 3.12 μg/m3
Ozone: 16.69 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 12:22 AM
Sunset: 6:01 PM
Daylight: 11 hrs 16 mins
Moonrise: 6:40 PM
Moon Transit: 12:15 AM
Moonset: 6:50 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:38 AM - 10:08 AM

Minor Periods

6:10 PM - 7:40 PM
6:20 AM - 7:50 AM

Action Rating: 5 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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