Water Temperature of the Tualatin River in Hillsboro, OR

Current Water Temperature

45.7°F

Measurement Time: Saturday, December 27, 2025, 12:00 PM PST

Temperature Locations

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Local Points of Interest

Jackson Bottom Wetlands; Jackson Slough

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Tualatin River

Station Name: TUALATIN RIVER AT HWY 219 NEAR HILLSBORO, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 135 feet

Nearest Address:
2600 SW Hillsboro Hwy
Hillsboro, OR 97123
Washington County

GPS Coordinates: 45.50011635, -122.9912157

Nearby Water Temperatures

Rock Creek, Hillsboro, OR (2.8 mi)
Gales Creek, Forest Grove, OR (6.1 mi)
Tualatin River, Dilley, OR (6.7 mi)
Beaverton Creek, Beaverton, OR (6.7 mi)
Wapato Creek, Gaston, OR (7.7 mi)
Tualatin River, Beaverton, OR (8.3 mi)
Scoggins Creek, Gaston, OR (8.5 mi)
Fanno Creek, Beaverton, OR (10.1 mi)
Scoggins Creek, Gaston, OR (10.3 mi)
Chicken Creek, Sherwood, OR (10.8 mi)
Fanno Creek, Tigard, OR (13.3 mi)
East Fork Dairy Creek, Meacham Corner, OR (13.9 mi)
Willamette River, West Linn, OR (15 mi)
Willamette River, Portland, OR (15.6 mi)
Crystal Springs Creek, Portland, OR (17 mi)

Weather for Hillsboro, Oregon

Current Weather

35.6°F
Cloudy
Conditions: Cloudy
Humidity: 98%
Heat Index: 35.6°F
Feels Like: 35.6°F
Wind: W 0.6 mph
Wind Gusts: 2 mph
Wind Chill: 35.6°F
Air Pressure: 1031.84 millibars
Dew Point: 35.6°F
Chance of Precipitation: 10%
Precipitation: 0 in
Cloud Cover: 25%
Visibility: 4 mi
UV Index: 0

Five Day Weather Forecast

Patchy rain nearby
Sat
H: 45°F
L: 35°F
Fog
Sun
H: 41°F
L: 34°F
Partly Cloudy
Mon
H: 46°F
L: 35°F
Partly Cloudy
Tue
H: 45°F
L: 35°F
Partly Cloudy
Wed
H: 46°F
L: 36°F

Air Quality

AQI: 1 - Good
PM2.5: 26.75 μg/m3
PM10: 31.35 μg/m3
Carbon Monoxide: 267.85 μg/m3
Nitrogen Dioxide: 49.55 μg/m3
Sulphur Dioxide: 6.55 μg/m3
Ozone: 7 μg/m3

Astronomical

Sunrise: 7:51 AM
Sun Transit: 12:13 AM
Sunset: 4:36 PM
Daylight: 8 hrs 44 mins
Moonrise: 11:48 AM
Moon Transit: 1:23 AM
Moonset: 12:50 AM
Moon Phase: First Quarter
Moon Illumination: 51.8%

Best Times for Fishing or Hunting

Major Periods

12:53 AM - 3:23 AM
12:53 AM - 3:23 AM

Minor Periods

11:18 AM - 12:48 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Winter Weather Advisory issued December 27 at 2:18AM PST until December 27 at 4:00PM PST by NWS Portland OR

Effective: Sat December 27, 2025, 2:18 AM
Expires: Sat December 27, 2025, 4:00 PM

* WHAT...Snow above 4000 ft. Additional snow accumulations of 1 to 4 inches. Winds gusting as high as 45 mph. * WHERE...South Washington Cascades and the Northern and Central Cascades of Oregon. * WHEN...Until 4 PM PST this afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous.

Have a winter emergency driving kit readily available. Common items to include: flashlight, batteries, blankets, a shovel, water, non-perishable food items, tire chains, etc. Be aware that walking surfaces may be slick. Walk with extra care. For the latest road conditions and chain restrictions in Oregon, call 5 1 1, or visit: www.tripcheck.com. For the latest road conditions and chain restrictions in Washington, visit: wsdot.com/travel/real-time/map
Saturday, December 27, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 39.6°F
Average Humidity: 86%
Chance of Rain: 89%
Wind: 7.4 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 6.95 μg/m3
PM10: 9.37 μg/m3
Carbon Monoxide: 166.29 μg/m3
Nitrogen Dioxide: 12.45 μg/m3
Sulphur Dioxide: 2.25 μg/m3
Ozone: 60.68 μg/m3

Astronomical

Sunrise: 7:51 AM
Sun Transit: 12:13 AM
Sunset: 4:36 PM
Daylight: 8 hrs 44 mins
Moonrise: 11:48 AM
Moon Transit: 1:23 AM
Moonset: 12:50 AM
Moon Phase: First Quarter
Moon Illumination: 51.8%

Best Times for Fishing or Hunting

Major Periods

12:53 AM - 3:23 AM
12:53 AM - 3:23 AM

Minor Periods

11:18 AM - 12:48 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, December 28, 2025

Weather Forecast

Conditions: Fog
Average Temperature: 37.3°F
Average Humidity: 91%
Chance of Rain: 0%
Wind: 3.6 mph
UV Index: 0.2

Air Quality

AQI: 2 - Moderate
PM2.5: 19.39 μg/m3
PM10: 22.8 μg/m3
Carbon Monoxide: 283.01 μg/m3
Nitrogen Dioxide: 37.75 μg/m3
Sulphur Dioxide: 5.17 μg/m3
Ozone: 27.32 μg/m3

Astronomical

Sunrise: 7:52 AM
Sun Transit: 12:13 AM
Sunset: 4:36 PM
Daylight: 8 hrs 45 mins
Moonrise: 12:08 AM
Moon Transit: 7:07 PM
Moonset: 1:04 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

1:39 AM - 4:09 AM
6:37 PM - 9:07 PM

Minor Periods

11:38 AM - 1:08 PM
12:34 AM - 2:04 AM

Action Rating: 2 out of 5

Monday, December 29, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 39°F
Average Humidity: 77%
Chance of Rain: 0%
Wind: 3.1 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 7.97 μg/m3
PM10: 8.71 μg/m3
Carbon Monoxide: 250.29 μg/m3
Nitrogen Dioxide: 21.13 μg/m3
Sulphur Dioxide: 2.78 μg/m3
Ozone: 39.32 μg/m3

Astronomical

Sunrise: 7:52 AM
Sun Transit: 12:14 AM
Sunset: 4:37 PM
Daylight: 8 hrs 45 mins
Moonrise: 12:32 AM
Moon Transit: 8:00 PM
Moonset: 2:23 AM
Moon Phase: First Quarter
Moon Illumination: 73.5%

Best Times for Fishing or Hunting

Major Periods

2:30 AM - 5:00 AM
7:30 PM - 10:00 PM

Minor Periods

12:02 AM - 1:32 PM
1:53 AM - 3:23 AM

Action Rating: 2 out of 5

Tuesday, December 30, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 38.9°F
Average Humidity: 70%
Chance of Rain: 0%
Wind: 2.9 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 9.51 μg/m3
PM10: 10.21 μg/m3
Carbon Monoxide: 288.08 μg/m3
Nitrogen Dioxide: 25.15 μg/m3
Sulphur Dioxide: 2.96 μg/m3
Ozone: 30.44 μg/m3

Astronomical

Sunrise: 7:52 AM
Sun Transit: 12:14 AM
Sunset: 4:38 PM
Daylight: 8 hrs 46 mins
Moonrise: 1:01 PM
Moon Transit: 8:57 PM
Moonset: 3:45 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.8%

Best Times for Fishing or Hunting

Major Periods

3:23 AM - 5:53 AM
8:27 PM - 10:57 PM

Minor Periods

12:31 AM - 2:01 PM
3:15 AM - 4:45 AM

Action Rating: 2 out of 5

Wednesday, December 31, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 39.6°F
Average Humidity: 72%
Chance of Rain: 0%
Wind: 2.2 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 13.31 μg/m3
PM10: 13.94 μg/m3
Carbon Monoxide: 367.68 μg/m3
Nitrogen Dioxide: 35.26 μg/m3
Sulphur Dioxide: 3.39 μg/m3
Ozone: 16.92 μg/m3

Astronomical

Sunrise: 7:52 AM
Sun Transit: 12:15 AM
Sunset: 4:39 PM
Daylight: 8 hrs 47 mins
Moonrise: 1:40 PM
Moon Transit: 10:00 PM
Moonset: 5:10 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.5%

Best Times for Fishing or Hunting

Major Periods

4:23 AM - 6:53 AM
9:30 PM - 12:00 PM

Minor Periods

1:10 PM - 2:40 PM
4:40 AM - 6:10 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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