Water Temperature of the Tualatin River in West Linn, OR

Current Water Temperature

72.7°F

Measurement Time: Friday, September 5, 2025, 4:00 AM PDT

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

73°F
Overcast
Conditions: Overcast
Humidity: 61%
Feels Like: 76.7°F
Wind: WNW 4.5 mph
Wind Gusts: 5.1 mph
Pressure: 29.93 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 9 mi
UV Index: 2

Five Day Weather Forecast

Thundery outbreaks in nearby
Sat
H: 81°F
L: 64°F
Overcast
Sun
H: 69°F
L: 60°F
Overcast
Mon
H: 68°F
L: 60°F
Moderate rain
Tue
H: 64°F
L: 58°F
Patchy rain nearby
Wed
H: 74°F
L: 55°F

Air Quality

AQI: 1 - Good
PM2.5: 37 μg/m3
PM10: 42.74 μg/m3
Carbon Monoxide: 395.9 μg/m3
Nitrogen Dioxide: 41.07 μg/m3
Sulphur Dioxide: 2.22 μg/m3
Ozone: 37 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 1:08 PM
Sunset: 7:38 PM
Daylight: 12 hrs 59 mins
Moonrise: 7:21 PM
Moon Transit: 12:00 AM
Moonset: 5:11 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:23 AM - 9:53 AM

Minor Periods

6:51 PM - 8:21 PM
4:41 AM - 6:11 AM

Action Rating: 4 out of 5

Saturday, September 6, 2025

Weather Forecast

Conditions: Thundery outbreaks in nearby
Average Temperature: 69.8°F
Average Humidity: 71%
Chance of Rain: 0%
Wind: 4.5 mph
UV Index: 1.1

Air Quality

AQI: 2 - Moderate
PM2.5: 35.88 μg/m3
PM10: 40.22 μg/m3
Carbon Monoxide: 430.61 μg/m3
Nitrogen Dioxide: 17.75 μg/m3
Sulphur Dioxide: 2.04 μg/m3
Ozone: 54.12 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 1:08 PM
Sunset: 7:38 PM
Daylight: 12 hrs 59 mins
Moonrise: 7:21 PM
Moon Transit: 12:00 AM
Moonset: 5:11 AM
Moon Phase: Full
Moon Illumination: 99.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:23 AM - 9:53 AM

Minor Periods

6:51 PM - 8:21 PM
4:41 AM - 6:11 AM

Action Rating: 4 out of 5

Sunday, September 7, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 63.7°F
Average Humidity: 74%
Chance of Rain: 0%
Wind: 5.6 mph
UV Index: 1.4

Air Quality

AQI: 2 - Moderate
PM2.5: 26 μg/m3
PM10: 30.86 μg/m3
Carbon Monoxide: 330.56 μg/m3
Nitrogen Dioxide: 16.1 μg/m3
Sulphur Dioxide: 1.61 μg/m3
Ozone: 53.96 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 1:08 PM
Sunset: 7:36 PM
Daylight: 12 hrs 56 mins
Moonrise: 7:41 PM
Moon Transit: 12:48 AM
Moonset: 6:29 AM
Moon Phase: Full
Moon Illumination: 99.8%

Best Times for Fishing or Hunting

Major Periods

12:18 AM - 2:48 AM
8:12 AM - 10:42 AM

Minor Periods

7:11 PM - 8:41 PM
5:59 AM - 7:29 AM

Action Rating: 4 out of 5

Monday, September 8, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 63.2°F
Average Humidity: 75%
Chance of Rain: 0%
Wind: 6.3 mph
UV Index: 0.8

Air Quality

AQI: 2 - Moderate
PM2.5: 21.47 μg/m3
PM10: 24.36 μg/m3
Carbon Monoxide: 326.71 μg/m3
Nitrogen Dioxide: 27.54 μg/m3
Sulphur Dioxide: 2.52 μg/m3
Ozone: 43.24 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:08 PM
Sunset: 7:34 PM
Daylight: 12 hrs 52 mins
Moonrise: 8:00 PM
Moon Transit: 1:37 AM
Moonset: 7:48 AM
Moon Phase: Full
Moon Illumination: 97.6%

Best Times for Fishing or Hunting

Major Periods

1:07 AM - 3:37 AM
11:58 AM - 2:28 PM

Minor Periods

7:30 PM - 9:00 PM
7:18 AM - 8:48 AM

Action Rating: 4 out of 5

Tuesday, September 9, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 60.4°F
Average Humidity: 91%
Chance of Rain: 89%
Wind: 3.1 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 13.86 μg/m3
PM10: 15.72 μg/m3
Carbon Monoxide: 314.65 μg/m3
Nitrogen Dioxide: 14.2 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 48.8 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:07 PM
Sunset: 7:32 PM
Daylight: 12 hrs 49 mins
Moonrise: 8:21 PM
Moon Transit: 2:25 AM
Moonset: 9:08 AM
Moon Phase: Full
Moon Illumination: 93.0%

Best Times for Fishing or Hunting

Major Periods

1:55 AM - 4:25 AM
9:50 AM - 12:20 AM

Minor Periods

7:51 PM - 9:21 PM
8:38 AM - 10:08 AM

Action Rating: 4 out of 5

Wednesday, September 10, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 62.7°F
Average Humidity: 73%
Chance of Rain: 83%
Wind: 3.8 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 12.47 μg/m3
PM10: 13.29 μg/m3
Carbon Monoxide: 360.18 μg/m3
Nitrogen Dioxide: 30.25 μg/m3
Sulphur Dioxide: 1.88 μg/m3
Ozone: 32.54 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 1:07 PM
Sunset: 7:30 PM
Daylight: 12 hrs 46 mins
Moonrise: 8:44 PM
Moon Transit: 3:16 AM
Moonset: 10:30 AM
Moon Phase: Waning Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

2:46 AM - 5:16 AM
10:41 AM - 1:11 PM

Minor Periods

8:14 PM - 9:44 PM
10:00 AM - 11:30 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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