Water Temperature of the Tualatin River in West Linn, OR

Current Water Temperature

71.2°F

Measurement Time: Saturday, June 20, 2026, 6:00 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

53.1°F
Clear
Clear
53.8°F
55.8°F
83%
ENE 2.2 mph
2.8 mph
56.1°F
48.8°F
0 in
0%
9 mi
1019 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 83°F
L: 52°F
Sunny
Mon
H: 92°F
L: 52°F
Sunny
Tue
H: 92°F
L: 57°F
Sunny
Wed
H: 84°F
L: 53°F
Sunny
Thu
H: 83°F
L: 49°F

Air Quality

AQI: 1 - Good
PM2.5: 9.7 μg/m3
PM10: 13.8 μg/m3
Carbon Monoxide: 107 μg/m3
Nitrogen Dioxide: 7.8 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 41 μg/m3

Astronomical

Sunrise: 5:22 AM
Sun Transit: 1:12 PM
Sunset: 9:03 PM
Daylight: 15 hrs 40 mins
Moonrise: 1:14 PM
Moon Transit: 7:15 PM
Moonset: 12:48 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

1:55 AM - 4:25 AM
6:45 PM - 9:15 PM

Minor Periods

12:44 AM - 2:14 PM
12:18 AM - 1:48 AM

Action Rating: 3 out of 5

Heat Advisory issued June 20 at 11:25AM PDT until June 23 at 11:00PM PDT by NWS Portland OR

Effective: Sat June 20, 2026, 11:25 AM
Expires: Sat June 20, 2026, 11:30 PM

* WHAT...Temperatures up to 94 to 100 expected. * WHERE...Western and Central Columbia River Gorge, Portland Metro Lowlands, Inner Vancouver Metro, and East Clark County Lowlands. * WHEN...From 11 AM Monday to 11 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in a cool place during the heat of the day, stay out of the sunshine, and check up on relatives and neighbors. For those without air conditioning, use fans to keep air moving. Keeps windows closed during the day and open at night, unless air quality is degraded due to wildfire smoke.


Heat Advisory issued June 20 at 10:35PM PDT until June 23 at 11:00PM PDT by NWS Portland OR

Effective: Sat June 20, 2026, 10:35 PM
Expires: Sun June 21, 2026, 10:45 AM

* WHAT...Temperatures up to 94 to 99 expected. * WHERE...Western and Central Columbia River Gorge, Portland Metro Lowlands, Inner Vancouver Metro, and East Clark County Lowlands. * WHEN...From 11 AM Monday to 11 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in a cool place during the heat of the day, stay out of the sunshine, and check up on relatives and neighbors. For those without air conditioning, use fans to keep air moving. Keeps windows closed during the day and open at night, unless air quality is degraded due to wildfire smoke.


Heat Advisory issued June 20 at 11:25AM PDT until June 23 at 11:00PM PDT by NWS Portland OR

Effective: Sat June 20, 2026, 11:25 AM
Expires: Sat June 20, 2026, 11:30 PM

* WHAT...Temperatures up to 94 to 99 expected. * WHERE...Central and Southern Willamette Valley, Outer Southeast Portland Metro, West Columbia River Gorge of Oregon above 500 ft, Upper Hood River Valley, and Clackamas County Cascade Foothills. * WHEN...From 11 AM Monday to 11 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in a cool place during the heat of the day, stay out of the sunshine, and check up on relatives and neighbors. For those without air conditioning, use fans to keep air moving. Keeps windows closed during the day and open at night, unless air quality is degraded due to wildfire smoke.


Heat Advisory issued June 20 at 10:35PM PDT until June 23 at 11:00PM PDT by NWS Portland OR

Effective: Sat June 20, 2026, 10:35 PM
Expires: Sun June 21, 2026, 10:45 AM

* WHAT...Temperatures up to 93 to 98 expected. * WHERE...Central and Southern Willamette Valley, Outer Southeast Portland Metro, West Columbia River Gorge of Oregon above 500 ft, Upper Hood River Valley, and Clackamas County Cascade Foothills. * WHEN...From 11 AM Monday to 11 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses.

Drink plenty of fluids, stay in a cool place during the heat of the day, stay out of the sunshine, and check up on relatives and neighbors. For those without air conditioning, use fans to keep air moving. Keeps windows closed during the day and open at night, unless air quality is degraded due to wildfire smoke.
Sunday, June 21, 2026

Weather Forecast

Sunny
82.8°F
51.8°F
66.6°F
60%
0 in
3%
0%
6.7 mph
8.1


Air Quality

AQI: 1 - Good
PM2.5: 9.73 μg/m3
PM10: 13.24 μg/m3
Carbon Monoxide: 107.71 μg/m3
Nitrogen Dioxide: 5.14 μg/m3
Sulphur Dioxide: 0.88 μg/m3
Ozone: 64.21 μg/m3

Astronomical

Sunrise: 5:22 AM
Sun Transit: 1:12 PM
Sunset: 9:03 PM
Daylight: 15 hrs 40 mins
Moonrise: 1:14 PM
Moon Transit: 7:15 PM
Moonset: 12:48 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

1:55 AM - 4:25 AM
6:45 PM - 9:15 PM

Minor Periods

12:44 AM - 2:14 PM
12:18 AM - 1:48 AM

Action Rating: 3 out of 5

Monday, June 22, 2026

Weather Forecast

Sunny
91.7°F
51.9°F
71.5°F
51%
0 in
2%
0%
8.7 mph
8.2


Air Quality

AQI: 1 - Good
PM2.5: 8.66 μg/m3
PM10: 10.51 μg/m3
Carbon Monoxide: 137.42 μg/m3
Nitrogen Dioxide: 6.53 μg/m3
Sulphur Dioxide: 0.76 μg/m3
Ozone: 75.63 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 1:12 PM
Sunset: 9:03 PM
Daylight: 15 hrs 40 mins
Moonrise: 2:23 PM
Moon Transit: 7:58 PM
Moonset: 1:05 AM
Moon Phase: First Quarter
Moon Illumination: 49.7%

Best Times for Fishing or Hunting

Major Periods

2:37 AM - 5:07 AM
7:28 PM - 9:58 PM

Minor Periods

1:53 PM - 3:23 PM
12:35 AM - 2:05 AM

Action Rating: 3 out of 5

Tuesday, June 23, 2026

Weather Forecast

Sunny
92.4°F
57°F
73.4°F
46%
0 in
1%
0%
12.1 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 6.32 μg/m3
PM10: 7.07 μg/m3
Carbon Monoxide: 146.96 μg/m3
Nitrogen Dioxide: 6.06 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 87.38 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 1:13 PM
Sunset: 9:03 PM
Daylight: 15 hrs 40 mins
Moonrise: 3:30 PM
Moon Transit: 8:40 PM
Moonset: 1:22 AM
Moon Phase: First Quarter
Moon Illumination: 61.0%

Best Times for Fishing or Hunting

Major Periods

3:20 AM - 5:50 AM
8:10 PM - 10:40 PM

Minor Periods

3:00 PM - 4:30 PM
12:52 AM - 2:22 AM

Action Rating: 3 out of 5

Wednesday, June 24, 2026

Weather Forecast

Sunny
83.7°F
52.9°F
67.8°F
42%
0 in
1%
0%
11.4 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 7.83 μg/m3
PM10: 10.62 μg/m3
Carbon Monoxide: 121.54 μg/m3
Nitrogen Dioxide: 5.32 μg/m3
Sulphur Dioxide: 0.55 μg/m3
Ozone: 63.67 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 1:13 PM
Sunset: 9:03 PM
Daylight: 15 hrs 40 mins
Moonrise: 4:38 PM
Moon Transit: 9:25 PM
Moonset: 1:42 AM
Moon Phase: First Quarter
Moon Illumination: 71.7%

Best Times for Fishing or Hunting

Major Periods

4:03 AM - 6:33 AM
8:55 PM - 11:25 PM

Minor Periods

4:08 PM - 5:38 PM
1:12 AM - 2:42 AM

Action Rating: 3 out of 5

Thursday, June 25, 2026

Weather Forecast

Sunny
82.7°F
48.7°F
59.9°F
57%
0 in
3%
0%
6.5 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 9.13 μg/m3
PM10: 12.88 μg/m3
Carbon Monoxide: 116.67 μg/m3
Nitrogen Dioxide: 6.6 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 41.67 μg/m3

Astronomical

Sunrise: 5:24 AM
Sun Transit: 1:13 PM
Sunset: 9:03 PM
Daylight: 15 hrs 39 mins
Moonrise: 5:45 PM
Moon Transit: 10:11 PM
Moonset: 2:04 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.2%

Best Times for Fishing or Hunting

Major Periods

4:48 AM - 7:18 AM
12:00 AM - 12:00 AM

Minor Periods

5:15 PM - 6:45 PM
1:34 AM - 3:04 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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