Water Temperature of the Willamette River in Portland, OR

Current Water Temperature

63.9°F

Measurement Time: Wednesday, September 30, 2026, 2:30 AM PDT

Temperature Locations

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Local Points of Interest

Tom McCall Waterfront Park

Willamette River

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

Elevation Above Sea Level: 13 feet

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

55°F

Conditions: Mostly Sunny

Humidity: 80%

Wind: NNW 3 mph

Dew Point: 49°F

Weather Forecast

Today
77°F - Mostly Sunny

Tonight
55°F - Partly Cloudy

Friday
77°F - Mostly Sunny

Friday Night
55°F - Partly Cloudy

Saturday
80°F - Sunny

Saturday Night
55°F - Mostly Clear

Sunday
82°F - Sunny

Sunday Night
55°F - Partly Cloudy

Monday
76°F - Mostly Sunny

Monday Night
53°F - Mostly Clear

Tuesday
75°F - Sunny

Tuesday Night
52°F - Mostly Clear

Wednesday
76°F - Sunny

Wednesday Night
53°F - Mostly Clear

Astronomical

Sunrise: 7:09 AM
Sun Transit: 1:00 PM
Sunset: 6:51 PM
Daylight: 11 hrs 42 mins

Moonrise: 9:36 PM
Moon Transit: 5:04 AM
Moonset: 1:33 PM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:34 AM - 7:04 AM
12:33 AM - 3:03 PM

Minor Periods

9:06 PM - 10:36 PM
1:03 PM - 2:33 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 1:00 PM
Sunset: 6:51 PM
Daylight: 11 hrs 42 mins

Moonrise: 9:36 PM
Moon Transit: 5:04 AM
Moonset: 1:33 PM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:34 AM - 7:04 AM
12:33 AM - 3:03 PM

Minor Periods

9:06 PM - 10:36 PM
1:03 PM - 2:33 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 1:00 PM
Sunset: 6:51 PM
Daylight: 11 hrs 42 mins

Moonrise: 9:36 PM
Moon Transit: 5:04 AM
Moonset: 1:33 PM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:34 AM - 7:04 AM
12:33 AM - 3:03 PM

Minor Periods

9:06 PM - 10:36 PM
1:03 PM - 2:33 PM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 1:00 PM
Sunset: 6:49 PM
Daylight: 11 hrs 39 mins

Moonrise: 10:42 PM
Moon Transit: 6:07 AM
Moonset: 2:38 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:37 AM - 8:07 AM
1:36 PM - 4:06 PM

Minor Periods

10:12 PM - 11:42 PM
2:08 PM - 3:38 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 1:00 PM
Sunset: 6:49 PM
Daylight: 11 hrs 39 mins

Moonrise: 10:42 PM
Moon Transit: 6:07 AM
Moonset: 2:38 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:37 AM - 8:07 AM
1:36 PM - 4:06 PM

Minor Periods

10:12 PM - 11:42 PM
2:08 PM - 3:38 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 1:00 PM
Sunset: 6:47 PM
Daylight: 11 hrs 35 mins

Moonrise: 11:57 PM
Moon Transit: 7:09 AM
Moonset: 3:28 PM
Moon Phase: Last Quarter
Moon Illumination: 43.9%

Best Times for Fishing or Hunting

Major Periods

6:39 AM - 9:09 AM
2:37 PM - 5:07 PM

Minor Periods

12:00 AM - 12:00 AM
2:58 PM - 4:28 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 1:00 PM
Sunset: 6:47 PM
Daylight: 11 hrs 35 mins

Moonrise: 11:57 PM
Moon Transit: 7:09 AM
Moonset: 3:28 PM
Moon Phase: Last Quarter
Moon Illumination: 43.9%

Best Times for Fishing or Hunting

Major Periods

6:39 AM - 9:09 AM
2:37 PM - 5:07 PM

Minor Periods

12:00 AM - 12:00 AM
2:58 PM - 4:28 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 1:00 PM
Sunset: 6:45 PM
Daylight: 11 hrs 32 mins

Moonrise: 12:57 AM
Moon Transit: 8:09 AM
Moonset: 4:07 PM
Moon Phase: Last Quarter
Moon Illumination: 32.9%

Best Times for Fishing or Hunting

Major Periods

7:39 AM - 10:09 AM
3:36 PM - 6:06 PM

Minor Periods

3:37 PM - 5:07 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 1:00 PM
Sunset: 6:45 PM
Daylight: 11 hrs 32 mins

Moonrise: 12:57 AM
Moon Transit: 8:09 AM
Moonset: 4:07 PM
Moon Phase: Last Quarter
Moon Illumination: 32.9%

Best Times for Fishing or Hunting

Major Periods

7:39 AM - 10:09 AM
3:36 PM - 6:06 PM

Minor Periods

3:37 PM - 5:07 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 1:00 PM
Sunset: 6:43 PM
Daylight: 11 hrs 29 mins

Moonrise: 1:17 AM
Moon Transit: 9:04 AM
Moonset: 4:37 PM
Moon Phase: Last Quarter
Moon Illumination: 22.8%

Best Times for Fishing or Hunting

Major Periods

8:34 AM - 11:04 AM
4:30 PM - 7:00 PM

Minor Periods

4:07 PM - 5:37 PM
12:47 AM - 2:17 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 1:00 PM
Sunset: 6:43 PM
Daylight: 11 hrs 29 mins

Moonrise: 1:17 AM
Moon Transit: 9:04 AM
Moonset: 4:37 PM
Moon Phase: Last Quarter
Moon Illumination: 22.8%

Best Times for Fishing or Hunting

Major Periods

8:34 AM - 11:04 AM
4:30 PM - 7:00 PM

Minor Periods

4:07 PM - 5:37 PM
12:47 AM - 2:17 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 12:58 AM
Sunset: 6:41 PM
Daylight: 11 hrs 26 mins

Moonrise: 2:36 AM
Moon Transit: 9:56 AM
Moonset: 5:00 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

5:20 PM - 7:50 PM
9:26 AM - 11:56 AM

Minor Periods

4:30 PM - 6:00 PM
2:06 AM - 3:36 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 12:58 AM
Sunset: 6:41 PM
Daylight: 11 hrs 26 mins

Moonrise: 2:36 AM
Moon Transit: 9:56 AM
Moonset: 5:00 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

5:20 PM - 7:50 PM
9:26 AM - 11:56 AM

Minor Periods

4:30 PM - 6:00 PM
2:06 AM - 3:36 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:58 AM
Sunset: 6:40 PM
Daylight: 11 hrs 23 mins

Moonrise: 3:53 AM
Moon Transit: 10:44 AM
Moonset: 5:20 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

6:07 PM - 8:37 PM
10:14 AM - 12:44 AM

Minor Periods

4:50 PM - 6:20 PM
3:23 AM - 4:53 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

Conditions:

High Temperature: °F

Low Temperature: °F

Average Temperature: °F

Average Humidity: %

Precipitation: in

Chance of Rain: %

Chance of Snow: %

Maximum Wind: mph

UV Index:

Air Quality

AQI: 0 -

PM2.5: 0 μg/m3

PM10: 0 μg/m3

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:58 AM
Sunset: 6:40 PM
Daylight: 11 hrs 23 mins

Moonrise: 3:53 AM
Moon Transit: 10:44 AM
Moonset: 5:20 PM
Moon Phase: Waning Crescent
Moon Illumination: 7.2%

Best Times for Fishing or Hunting

Major Periods

6:07 PM - 8:37 PM
10:14 AM - 12:44 AM

Minor Periods

4:50 PM - 6:20 PM
3:23 AM - 4:53 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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