Water Temperature of the Willamette River in Portland, OR

Current Water Temperature

77.7°F

Measurement Time: Wednesday, July 16, 2025, 8:30 AM PDT

Temperature Locations

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Local Points of Interest

Tom McCall Waterfront Park

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Willamette River

Station Name: WILLAMETTE RIVER AT PORTLAND, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 13 feet / 4 meters

Nearest Address:
SE Morrison Brg
Portland, OR 97204
Multnomah County

GPS Coordinates: 45.5175, -122.6691667

Nearby Water Temperatures

Crystal Springs Creek, Portland, OR (3.3 mi)
Johnson Creek, Milwaukie, OR (4.6 mi)
Fanno Creek, Beaverton, OR (7.6 mi)
Johnson Creek, Portland, OR (8.3 mi)
Kelley Creek, Portland, OR (8.7 mi)
Fanno Creek, Tigard, OR (8.9 mi)
Beaverton Creek, Beaverton, OR (8.9 mi)
Clackamas River, Oregon City, OR (10.5 mi)
Tualatin River , West Linn, OR (11.1 mi)
Johnson Creek, Gresham, OR (12.2 mi)
Rock Creek, Hillsboro, OR (12.8 mi)
Chicken Creek, Sherwood, OR (13.4 mi)
Tualatin River, Beaverton, OR (13.6 mi)
Tualatin River, Hillsboro, OR (15.6 mi)
Clackamas River, Estacada, OR (21.4 mi)

Weather for Portland, Oregon

Current Weather

93.9°F
Sunny
Conditions: Sunny
Humidity: 23%
Feels Like: 91°F
Wind: NW 5.4 mph
Wind Gusts: 6.2 mph
Pressure: 29.78 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 7.1

Five Day Weather Forecast

Sunny
Wed
H: 99°F
L: 70°F
Sunny
Thu
H: 91°F
L: 59°F
Sunny
Fri
H: 89°F
L: 63°F
Partly Cloudy
Sat
H: 79°F
L: 57°F
Patchy rain nearby
Sun
H: 72°F
L: 63°F

Air Quality

AQI: 1 - Good
PM2.5: 11.66 μg/m3
PM10: 11.84 μg/m3
Carbon Monoxide: 292.3 μg/m3
Nitrogen Dioxide: 14.25 μg/m3
Sulphur Dioxide: 2.04 μg/m3
Ozone: 81 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:16 PM
Sunset: 8:55 PM
Daylight: 15 hrs 18 mins
Moonrise: 12:31 AM
Moon Transit: 12:00 AM
Moonset: 12:19 AM
Moon Phase: Waning Gibbous
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

11:49 AM - 1:19 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Heat Advisory issued July 16 at 6:47AM PDT until July 16 at 10:00PM PDT by NWS Portland OR

Effective: Wed July 16, 2025, 6:47 AM
Expires: Wed July 16, 2025, 10:00 PM

* WHAT...Temperatures of 95 to 102 degrees expected. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Central and Southern Willamette Valley, and Lower Columbia River and Cowlitz River Valleys. * WHEN...Until 10 PM PDT this evening. * 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.


Heat Advisory issued July 16 at 6:47AM PDT until July 16 at 10:00PM PDT by NWS Portland OR

Effective: Wed July 16, 2025, 6:47 AM
Expires: Wed July 16, 2025, 10:00 PM

* WHAT...Temperatures of 95 to 102 degrees expected. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Central and Southern Willamette Valley, and Lower Columbia River and Cowlitz River Valleys. * WHEN...Until 10 PM PDT this evening. * 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.


Heat Advisory issued July 16 at 6:47AM PDT until July 16 at 10:00PM PDT by NWS Portland OR

Effective: Wed July 16, 2025, 6:47 AM
Expires: Wed July 16, 2025, 10:00 PM

* WHAT...Temperatures of 95 to 102 degrees expected. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Central and Southern Willamette Valley, and Lower Columbia River and Cowlitz River Valleys. * WHEN...Until 10 PM PDT this evening. * 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.


Wednesday, July 16, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 83.2°F
Average Humidity: 34%
Chance of Rain: 0%
Wind: 9.6 mph
UV Index: 2.4

Air Quality

AQI: 1 - Good
PM2.5: 10.66 μg/m3
PM10: 10.84 μg/m3
Carbon Monoxide: 358.09 μg/m3
Nitrogen Dioxide: 14.73 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 83.12 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:16 PM
Sunset: 8:55 PM
Daylight: 15 hrs 18 mins
Moonrise: 12:31 AM
Moon Transit: 12:00 AM
Moonset: 12:19 AM
Moon Phase: Waning Gibbous
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

11:49 AM - 1:19 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 17, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 74.4°F
Average Humidity: 49%
Chance of Rain: 0%
Wind: 6.9 mph
UV Index: 2.5

Air Quality

AQI: 1 - Good
PM2.5: 11.54 μg/m3
PM10: 14.22 μg/m3
Carbon Monoxide: 273.87 μg/m3
Nitrogen Dioxide: 8.76 μg/m3
Sulphur Dioxide: 2.07 μg/m3
Ozone: 73.56 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 1:16 PM
Sunset: 8:55 PM
Daylight: 15 hrs 16 mins
Moonrise: 12:50 AM
Moon Transit: 6:35 AM
Moonset: 1:37 PM
Moon Phase: Last Quarter
Moon Illumination: 44.4%

Best Times for Fishing or Hunting

Major Periods

6:05 AM - 8:35 AM
1:59 PM - 4:29 PM

Minor Periods

1:07 PM - 2:37 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, July 18, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 74.4°F
Average Humidity: 55%
Chance of Rain: 0%
Wind: 13.4 mph
UV Index: 2.4

Air Quality

AQI: 1 - Good
PM2.5: 11.7 μg/m3
PM10: 14.71 μg/m3
Carbon Monoxide: 313.54 μg/m3
Nitrogen Dioxide: 12.34 μg/m3
Sulphur Dioxide: 2.69 μg/m3
Ozone: 62.4 μg/m3

Astronomical

Sunrise: 5:40 AM
Sun Transit: 1:17 PM
Sunset: 8:54 PM
Daylight: 15 hrs 14 mins
Moonrise: 12:11 AM
Moon Transit: 7:25 AM
Moonset: 2:57 PM
Moon Phase: Last Quarter
Moon Illumination: 33.4%

Best Times for Fishing or Hunting

Major Periods

6:55 AM - 9:25 AM
2:50 PM - 5:20 PM

Minor Periods

2:27 PM - 3:57 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, July 19, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 65.9°F
Average Humidity: 61%
Chance of Rain: 0%
Wind: 9.2 mph
UV Index: 2.2

Air Quality

AQI: 1 - Good
PM2.5: 10.7 μg/m3
PM10: 14.19 μg/m3
Carbon Monoxide: 246.35 μg/m3
Nitrogen Dioxide: 7.06 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 65.32 μg/m3

Astronomical

Sunrise: 5:41 AM
Sun Transit: 1:17 PM
Sunset: 8:53 PM
Daylight: 15 hrs 12 mins
Moonrise: 12:36 AM
Moon Transit: 8:19 AM
Moonset: 4:20 PM
Moon Phase: Last Quarter
Moon Illumination: 23.2%

Best Times for Fishing or Hunting

Major Periods

7:49 AM - 10:19 AM
3:46 PM - 6:16 PM

Minor Periods

3:50 PM - 5:20 PM
12:06 AM - 1:36 AM

Action Rating: 2 out of 5

Sunday, July 20, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 65.4°F
Average Humidity: 74%
Chance of Rain: 87%
Wind: 6 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 5.05 μg/m3
PM10: 6.28 μg/m3
Carbon Monoxide: 203.5 μg/m3
Nitrogen Dioxide: 6.87 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 41.62 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 1:17 PM
Sunset: 8:52 PM
Daylight: 15 hrs 10 mins
Moonrise: 1:08 AM
Moon Transit: 9:17 AM
Moonset: 5:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

8:47 AM - 11:17 AM
4:45 PM - 7:15 PM

Minor Periods

5:10 PM - 6:40 PM
12:38 AM - 2:08 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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