Water Temperature of the Tualatin River in Hillsboro, OR

Current Water Temperature

54.7°F

Measurement Time: Monday, October 13, 2025, 2:30 PM PDT

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 / 41 meters

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 (15.0 mi)
Willamette River, Portland, OR (15.6 mi)
Crystal Springs Creek, Portland, OR (17.0 mi)

Weather for Hillsboro, Oregon

Current Weather

44.1°F
Clear
Conditions: Clear
Humidity: 82%
Feels Like: 41.8°F
Wind: NE 4.3 mph
Wind Gusts: 8.7 mph
Pressure: 29.92 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Mon
H: 63°F
L: 39°F
Sunny
Tue
H: 68°F
L: 41°F
Sunny
Wed
H: 69°F
L: 44°F
Cloudy
Thu
H: 52°F
L: 41°F
Partly Cloudy
Fri
H: 65°F
L: 49°F

Air Quality

AQI: 1 - Good
PM2.5: 6.25 μg/m3
PM10: 6.25 μg/m3
Carbon Monoxide: 184.85 μg/m3
Nitrogen Dioxide: 13.55 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 31 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:58 AM
Sunset: 6:29 PM
Daylight: 11 hrs 3 mins
Moonrise: 11:53 PM
Moon Transit: 7:04 AM
Moonset: 3:20 PM
Moon Phase: Last Quarter
Moon Illumination: 51.1%

Best Times for Fishing or Hunting

Major Periods

6:34 AM - 9:04 AM
2:28 PM - 4:58 PM

Minor Periods

12:00 AM - 12:00 AM
2:50 PM - 4:20 PM

Action Rating: 2 out of 5

Frost Advisory issued October 13 at 1:51AM PDT until October 14 at 9:00AM PDT by NWS Portland OR

Effective: Mon October 13, 2025, 1:51 AM
Expires: Mon October 13, 2025, 4:00 PM

* WHAT...Temperatures as low as 33 to 36 will result in frost formation. * WHERE...In Oregon, North Oregon Coast Range Lowlands, Lane County Cascade Foothills, Lane County Lowlands, and Linn County Lowlands. In Washington, Cowlitz County Lowlands and South Washington Cascade Foothills. * WHEN...From midnight tonight to 9 AM PDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures. Consider temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants.


Frost Advisory issued October 13 at 1:35PM PDT until October 14 at 9:00AM PDT by NWS Portland OR

Effective: Mon October 13, 2025, 1:35 PM
Expires: Tue October 14, 2025, 1:45 AM

* WHAT...Temperatures as low as 33 to 37 will result in frost formation. * WHERE...In Oregon, North Oregon Coast Range Lowlands, Lane County Cascade Foothills, Lane County Lowlands, and Linn County Lowlands. In Washington, Cowlitz County Lowlands and South Washington Cascade Foothills. * WHEN...From midnight tonight to 9 AM PDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures. Consider temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants.


Frost Advisory issued October 13 at 1:35PM PDT until October 14 at 9:00AM PDT by NWS Portland OR

Effective: Mon October 13, 2025, 1:35 PM
Expires: Tue October 14, 2025, 1:45 AM

* WHAT...Temperatures as low as 33 to 37 will result in frost formation. * WHERE...In Oregon, Lower Columbia River, Tualatin Valley, Benton County Lowlands, and Cascade Foothills of Marion and Linn Counties. In Washington, Inner Vancouver Metro and North Clark County Lowlands. * WHEN...From midnight tonight to 9 AM PDT Tuesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures. Consider temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants.


Monday, October 13, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 50.3°F
Average Humidity: 70%
Chance of Rain: 0%
Wind: 12.1 mph
UV Index: 0.6

Air Quality

AQI: 1 - Good
PM2.5: 7.41 μg/m3
PM10: 8.65 μg/m3
Carbon Monoxide: 231.89 μg/m3
Nitrogen Dioxide: 17.54 μg/m3
Sulphur Dioxide: 3.59 μg/m3
Ozone: 41.2 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:58 AM
Sunset: 6:29 PM
Daylight: 11 hrs 3 mins
Moonrise: 11:53 PM
Moon Transit: 7:04 AM
Moonset: 3:20 PM
Moon Phase: Last Quarter
Moon Illumination: 51.1%

Best Times for Fishing or Hunting

Major Periods

6:34 AM - 9:04 AM
2:28 PM - 4:58 PM

Minor Periods

12:00 AM - 12:00 AM
2:50 PM - 4:20 PM

Action Rating: 2 out of 5

Tuesday, October 14, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 53°F
Average Humidity: 53%
Chance of Rain: 0%
Wind: 8.1 mph
UV Index: 0.7

Air Quality

AQI: 1 - Good
PM2.5: 6.11 μg/m3
PM10: 6.17 μg/m3
Carbon Monoxide: 197.25 μg/m3
Nitrogen Dioxide: 12.25 μg/m3
Sulphur Dioxide: 2.67 μg/m3
Ozone: 45 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:57 AM
Sunset: 6:28 PM
Daylight: 11 hrs mins
Moonrise: 12:53 AM
Moon Transit: 8:00 AM
Moonset: 3:53 PM
Moon Phase: Last Quarter
Moon Illumination: 39.8%

Best Times for Fishing or Hunting

Major Periods

7:30 AM - 10:00 AM
3:23 PM - 5:53 PM

Minor Periods

3:23 PM - 4:53 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, October 15, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 55.3°F
Average Humidity: 49%
Chance of Rain: 0%
Wind: 3.4 mph
UV Index: 0.7

Air Quality

AQI: 1 - Good
PM2.5: 9.54 μg/m3
PM10: 9.65 μg/m3
Carbon Monoxide: 247.65 μg/m3
Nitrogen Dioxide: 21.48 μg/m3
Sulphur Dioxide: 3.63 μg/m3
Ozone: 34.68 μg/m3

Astronomical

Sunrise: 7:29 AM
Sun Transit: 12:57 AM
Sunset: 6:26 PM
Daylight: 10 hrs 57 mins
Moonrise: 1:09 AM
Moon Transit: 8:51 AM
Moonset: 4:18 PM
Moon Phase: Last Quarter
Moon Illumination: 29.1%

Best Times for Fishing or Hunting

Major Periods

8:21 AM - 10:51 AM
4:12 PM - 6:42 PM

Minor Periods

3:48 PM - 5:18 PM
12:39 AM - 2:09 AM

Action Rating: 3 out of 5

Thursday, October 16, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 47.9°F
Average Humidity: 81%
Chance of Rain: 0%
Wind: 2.7 mph
UV Index: 0.7

Air Quality

AQI: 1 - Good
PM2.5: 11.88 μg/m3
PM10: 13.82 μg/m3
Carbon Monoxide: 256.77 μg/m3
Nitrogen Dioxide: 25.34 μg/m3
Sulphur Dioxide: 3.09 μg/m3
Ozone: 25.08 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 12:57 AM
Sunset: 6:24 PM
Daylight: 10 hrs 54 mins
Moonrise: 2:23 AM
Moon Transit: 9:38 AM
Moonset: 4:39 PM
Moon Phase: Last Quarter
Moon Illumination: 19.4%

Best Times for Fishing or Hunting

Major Periods

4:58 PM - 7:28 PM
9:08 AM - 11:38 AM

Minor Periods

4:09 PM - 5:39 PM
1:53 AM - 3:23 AM

Action Rating: 2 out of 5

Friday, October 17, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 55.5°F
Average Humidity: 68%
Chance of Rain: 0%
Wind: 5.1 mph
UV Index: 0.7

Air Quality

AQI: 1 - Good
PM2.5: 11.17 μg/m3
PM10: 13.49 μg/m3
Carbon Monoxide: 236.08 μg/m3
Nitrogen Dioxide: 27.8 μg/m3
Sulphur Dioxide: 3.07 μg/m3
Ozone: 27.15 μg/m3

Astronomical

Sunrise: 7:31 AM
Sun Transit: 12:57 AM
Sunset: 6:22 PM
Daylight: 10 hrs 51 mins
Moonrise: 3:33 AM
Moon Transit: 10:21 AM
Moonset: 4:56 PM
Moon Phase: Waning Crescent
Moon Illumination: 11.3%

Best Times for Fishing or Hunting

Major Periods

5:40 PM - 8:10 PM
9:51 AM - 12:21 AM

Minor Periods

4:26 PM - 5:56 PM
3:03 AM - 4:33 AM

Action Rating: 3 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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