Water Temperature of the Tualatin River in Hillsboro, OR

Current Water Temperature

43.2°F

Measurement Time: Tuesday, December 30, 2025, 12:00 AM 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

34.8°F
Partly sunny
Partly sunny
84%
34.8°F
30.9°F
NNE 2.5 mph
7 mph
1025.84 millibars
30.9°F
5%
0 in
0%
10 mi
1

Five Day Weather Forecast

Sunny
Tue
H: 54°F
L: 33°F
Partly Cloudy
Wed
H: 43°F
L: 34°F
Moderate rain
Thu
H: 41°F
L: 37°F
Patchy rain nearby
Fri
H: 48°F
L: 39°F
Patchy rain nearby
Sat
H: 48°F
L: 42°F

Air Quality

AQI: 1 - Good
PM2.5: 10.95 μg/m3
PM10: 11.25 μg/m3
Carbon Monoxide: 254.85 μg/m3
Nitrogen Dioxide: 29.15 μg/m3
Sulphur Dioxide: 3.45 μg/m3
Ozone: 21 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

Dense Fog Advisory issued December 30 at 4:24AM PST until December 30 at 10:00AM PST by NWS Portland OR

Effective: Tue December 30, 2025, 4:24 AM
Expires: Tue December 30, 2025, 10:00 AM

* WHAT...Visibility one quarter mile or less in dense freezing fog. * WHERE...Lower Columbia River and Cowlitz River Valleys, and Lane County Lowlands. * WHEN...Until 10 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. Some areas could see slick surfaces. Especially on raised, metal surfaces. * ADDITIONAL DETAILS...With temperatures currently at or near freezing. Expect dense freezing fog.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you. 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.
Tuesday, December 30, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 39.6°F
Average Humidity: 70%
Chance of Rain: 0%
Wind: 2.7 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 7.83 μg/m3
PM10: 8.12 μg/m3
Carbon Monoxide: 232.13 μg/m3
Nitrogen Dioxide: 25.38 μg/m3
Sulphur Dioxide: 2.96 μg/m3
Ozone: 30.04 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: 37.7°F
Average Humidity: 75%
Chance of Rain: 0%
Wind: 2.5 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 11.83 μg/m3
PM10: 12.17 μg/m3
Carbon Monoxide: 260.33 μg/m3
Nitrogen Dioxide: 27.68 μg/m3
Sulphur Dioxide: 3.35 μg/m3
Ozone: 20.32 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

Thursday, January 1, 2026

Weather Forecast

Conditions: Moderate rain
Average Temperature: 38.7°F
Average Humidity: 95%
Chance of Rain: 87%
Wind: 1.8 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 19.78 μg/m3
PM10: 20.3 μg/m3
Carbon Monoxide: 543.29 μg/m3
Nitrogen Dioxide: 36.01 μg/m3
Sulphur Dioxide: 5.41 μg/m3
Ozone: 6.52 μg/m3

Astronomical

Sunrise: 7:52 AM
Sun Transit: 12:15 AM
Sunset: 4:40 PM
Daylight: 8 hrs 48 mins
Moonrise: 2:34 PM
Moon Transit: 11:07 PM
Moonset: 6:31 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.0%

Best Times for Fishing or Hunting

Major Periods

5:27 AM - 7:57 AM
12:00 AM - 12:00 AM

Minor Periods

2:04 PM - 3:34 PM
6:01 AM - 7:31 AM

Action Rating: 4 out of 5

Friday, January 2, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 42.2°F
Average Humidity: 92%
Chance of Rain: 81%
Wind: 4.7 mph
UV Index: 2

Air Quality

AQI: 1 - Good
PM2.5: 13.74 μg/m3
PM10: 13.99 μg/m3
Carbon Monoxide: 399.2 μg/m3
Nitrogen Dioxide: 32.83 μg/m3
Sulphur Dioxide: 3.95 μg/m3
Ozone: 13.56 μg/m3

Astronomical

Sunrise: 7:52 AM
Sun Transit: 12:16 AM
Sunset: 4:41 PM
Daylight: 8 hrs 49 mins
Moonrise: 3:42 PM
Moon Transit: 12:00 AM
Moonset: 7:41 AM
Moon Phase: Full
Moon Illumination: 99.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:34 AM - 9:04 AM

Minor Periods

3:12 PM - 4:42 PM
7:11 AM - 8:41 AM

Action Rating: 4 out of 5

Saturday, January 3, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 44.3°F
Average Humidity: 90%
Chance of Rain: 87%
Wind: 9.6 mph
UV Index: 2

Air Quality

AQI: 1 - Good
PM2.5: 5.21 μg/m3
PM10: 5.26 μg/m3
Carbon Monoxide: 232.26 μg/m3
Nitrogen Dioxide: 20.39 μg/m3
Sulphur Dioxide: 2.41 μg/m3
Ozone: 34.46 μg/m3

Astronomical

Sunrise: 7:52 AM
Sun Transit: 12:16 AM
Sunset: 4:42 PM
Daylight: 8 hrs 50 mins
Moonrise: 5:02 PM
Moon Transit: 12:13 AM
Moonset: 8:36 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:39 AM - 10:09 AM

Minor Periods

4:32 PM - 6:02 PM
8:06 AM - 9:36 AM

Action Rating: 6 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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