Water Temperature of the Tualatin River in West Linn, OR

Current Water Temperature

72.0°F

Measurement Time: Sunday, August 2, 2026, 11:00 PM PDT

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

54.3°F
Sunny
Sunny
52.7°F
54.3°F
85%
NNE 2.9 mph
4.2 mph
53.3°F
49.9°F
0 in
0%
6 mi
1021 mbar
0.2

Five Day Weather Forecast

Sunny
Mon
H: 89°F
L: 53°F
Smoky haze
Tue
H: 100°F
L: 54°F
Smoky haze
Wed
H: 100°F
L: 59°F
Smoky haze
Thu
H: 98°F
L: 61°F
Sunny
Fri
H: 95°F
L: 55°F

Air Quality

AQI: 1 - Good
PM2.5: 5.4 μg/m3
PM10: 5.8 μg/m3
Carbon Monoxide: 116 μg/m3
Nitrogen Dioxide: 9.8 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 23 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:16 PM
Sunset: 8:36 PM
Daylight: 14 hrs 38 mins
Moonrise: 10:37 PM
Moon Transit: 12:00 AM
Moonset: 11:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:10 AM - 2:40 PM

Minor Periods

10:07 PM - 11:37 PM
11:02 AM - 12:32 AM

Action Rating: 2 out of 5

Fire Weather Watch issued August 2 at 9:19PM PDT until August 4 at 10:00PM PDT by NWS Pendleton OR

Effective: Sun August 2, 2026, 9:19 PM
Expires: Mon August 3, 2026, 7:00 AM

...ENHANCED EAST-NORTHEAST WINDS WILL PROMOTE BREEZY AND VERY DRY CONDITIONS TUESDAY... .A thermal trough developing along the coast will attribute to east-northeast winds bringing a very dry airmass to the area. Enhanced winds will also be present, providing critical fire weather spread potential Tuesday. The National Weather Service in Pendleton has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Tuesday morning through Tuesday evening. * AFFECTED AREA...Fire Weather Zone 703 Warm Springs Reservation. * TIMING...From Tuesday morning through Tuesday evening. * WINDS...Northeast 10 to 15 mph. * RELATIVE HUMIDITY...As low as 15 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
Monday, August 3, 2026

Weather Forecast

Sunny
89.2°F
52.7°F
70.1°F
49%
0 in
1%
0%
10.3 mph
2.4


Air Quality

AQI: 2 - Moderate
PM2.5: 17.06 μg/m3
PM10: 18.08 μg/m3
Carbon Monoxide: 157.13 μg/m3
Nitrogen Dioxide: 6.99 μg/m3
Sulphur Dioxide: 1.94 μg/m3
Ozone: 82.04 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:16 PM
Sunset: 8:36 PM
Daylight: 14 hrs 38 mins
Moonrise: 10:37 PM
Moon Transit: 12:00 AM
Moonset: 11:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:10 AM - 2:40 PM

Minor Periods

10:07 PM - 11:37 PM
11:02 AM - 12:32 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Smoky haze
99.9°F
54.2°F
76.6°F
32%
0 in
1%
0%
8.9 mph
2


Air Quality

AQI: 4 - Unhealthy
PM2.5: 70.82 μg/m3
PM10: 72.33 μg/m3
Carbon Monoxide: 420.75 μg/m3
Nitrogen Dioxide: 22.2 μg/m3
Sulphur Dioxide: 6.85 μg/m3
Ozone: 155.92 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:16 PM
Sunset: 8:34 PM
Daylight: 14 hrs 36 mins
Moonrise: 10:59 PM
Moon Transit: 5:33 AM
Moonset: 12:46 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

5:03 AM - 7:33 AM
12:57 AM - 3:27 PM

Minor Periods

10:29 PM - 11:59 PM
12:16 AM - 1:46 PM

Action Rating: 2 out of 5

Wednesday, August 5, 2026

Weather Forecast

Smoky haze
100°F
59.1°F
78.8°F
32%
0 in
1%
0%
6.9 mph
1.5


Air Quality

AQI: 4 - Unhealthy
PM2.5: 78.22 μg/m3
PM10: 80.03 μg/m3
Carbon Monoxide: 560.29 μg/m3
Nitrogen Dioxide: 24.44 μg/m3
Sulphur Dioxide: 6.59 μg/m3
Ozone: 158.46 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:16 PM
Sunset: 8:33 PM
Daylight: 14 hrs 33 mins
Moonrise: 11:26 PM
Moon Transit: 6:22 AM
Moonset: 2:03 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:52 AM - 8:22 AM
1:48 PM - 4:18 PM

Minor Periods

12:00 AM - 12:00 AM
1:33 PM - 3:03 PM

Action Rating: 3 out of 5

Thursday, August 6, 2026

Weather Forecast

Smoky haze
98.1°F
60.5°F
78.2°F
36%
0 in
1%
0%
5.8 mph
5.2


Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 41.56 μg/m3
PM10: 45.51 μg/m3
Carbon Monoxide: 295.95 μg/m3
Nitrogen Dioxide: 8.26 μg/m3
Sulphur Dioxide: 1.98 μg/m3
Ozone: 104.33 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:16 PM
Sunset: 8:32 PM
Daylight: 14 hrs 30 mins
Moonrise: 12:26 AM
Moon Transit: 7:16 AM
Moonset: 3:23 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

6:46 AM - 9:16 AM
2:43 PM - 5:13 PM

Minor Periods

2:53 PM - 4:23 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, August 7, 2026

Weather Forecast

Sunny
95°F
55°F
74.3°F
39%
0 in
1%
0%
6.5 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 12.08 μg/m3
PM10: 15.47 μg/m3
Carbon Monoxide: 134.83 μg/m3
Nitrogen Dioxide: 10.95 μg/m3
Sulphur Dioxide: 0.67 μg/m3
Ozone: 34.5 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:16 PM
Sunset: 8:30 PM
Daylight: 14 hrs 28 mins
Moonrise: 12:02 AM
Moon Transit: 8:16 AM
Moonset: 4:41 PM
Moon Phase: Last Quarter
Moon Illumination: 22.2%

Best Times for Fishing or Hunting

Major Periods

7:46 AM - 10:16 AM
3:44 PM - 6:14 PM

Minor Periods

4:11 PM - 5:41 PM
12:00 AM - 12:00 AM

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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