Water Temperature of the Willamette River in Portland, OR

Current Water Temperature

43.3°F

Measurement Time: Sunday, January 18, 2026, 6:30 PM PST

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

37°F
Clear
Clear
34.8°F
35.8°F
72%
NNE 3.1 mph
6.3 mph
32.4°F
27.1°F
0 in
0%
9 mi
1028 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 49°F
L: 33°F
Sunny
Tue
H: 45°F
L: 33°F
Partly Cloudy
Wed
H: 42°F
L: 30°F
Patchy rain nearby
Thu
H: 51°F
L: 36°F
Patchy rain nearby
Fri
H: 47°F
L: 33°F

Air Quality

AQI: 2 - Moderate
PM2.5: 8.45 μg/m3
PM10: 8.65 μg/m3
Carbon Monoxide: 231.85 μg/m3
Nitrogen Dioxide: 13.25 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 47 μg/m3

Astronomical

Sunrise: 7:44 AM
Sun Transit: 12:21 AM
Sunset: 4:59 PM
Daylight: 9 hrs 15 mins
Moonrise: 8:35 AM
Moon Transit: 1:14 PM
Moonset: 6:03 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

8:38 PM - 11:08 PM
12:44 AM - 3:14 PM

Minor Periods

5:33 PM - 7:03 PM
8:05 AM - 9:35 AM

Action Rating: 4 out of 5

Air Stagnation Advisory issued January 18 at 11:55AM PST until January 21 at 4:00PM PST by NWS Portland OR

Effective: Sun January 18, 2026, 11:55 AM
Expires: Wed January 21, 2026, 4:00 PM

* WHAT...Light winds and limited air movement will lead to a period of stagnant air conditions. * WHERE...Central and Southern Willamette Valley, and Tualatin Valley. * WHEN...Until 4 PM PST Wednesday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems.

State air quality agencies highly recommend that no outdoor burning occur and that residential wood burning devices be limited as much as possible. According to state air quality agencies, prolonged periods of stagnant air can hold pollutants close to the ground where people live and breathe. Check with your local burn agency for any current restrictions in your area. People with respiratory illness should follow their physician's advice for dealing with high levels of air pollution during periods of stagnant air, especially if an Air Quality Alert is in effect for your area. To see if an Air Quality Alert is in effect for your area, go to www.weather.gov/pqr and left-click your location on the homepage map display. Alternatively, you could also type your location into the search bar found on the top-left hand side of the homepage. From there, you will see an Air Quality Alert listed at the top if one is in effect for your location; you can click the alert to read more details if applicable.


Monday, January 19, 2026

Weather Forecast

Sunny
48.9°F
33.4°F
39.1°F
69%
0 in
0%
0%
6.3 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 7.7 μg/m3
PM10: 7.9 μg/m3
Carbon Monoxide: 220.33 μg/m3
Nitrogen Dioxide: 18.07 μg/m3
Sulphur Dioxide: 2.42 μg/m3
Ozone: 40.92 μg/m3

Astronomical

Sunrise: 7:44 AM
Sun Transit: 12:21 AM
Sunset: 4:59 PM
Daylight: 9 hrs 15 mins
Moonrise: 8:35 AM
Moon Transit: 1:14 PM
Moonset: 6:03 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

8:38 PM - 11:08 PM
12:44 AM - 3:14 PM

Minor Periods

5:33 PM - 7:03 PM
8:05 AM - 9:35 AM

Action Rating: 4 out of 5

Tuesday, January 20, 2026

Weather Forecast

Sunny
44.6°F
32.7°F
37°F
74%
0 in
0%
0%
2.9 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 9.54 μg/m3
PM10: 9.71 μg/m3
Carbon Monoxide: 342.85 μg/m3
Nitrogen Dioxide: 24.82 μg/m3
Sulphur Dioxide: 2.68 μg/m3
Ozone: 35.92 μg/m3

Astronomical

Sunrise: 7:43 AM
Sun Transit: 12:21 AM
Sunset: 5:01 PM
Daylight: 9 hrs 17 mins
Moonrise: 8:58 AM
Moon Transit: 2:01 PM
Moonset: 7:15 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

9:24 PM - 11:54 PM
1:31 PM - 4:01 PM

Minor Periods

6:45 PM - 8:15 PM
8:28 AM - 9:58 AM

Action Rating: 3 out of 5

Wednesday, January 21, 2026

Weather Forecast

Partly Cloudy
42.4°F
29.7°F
34.9°F
74%
0 in
0%
0%
3.8 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 10.21 μg/m3
PM10: 10.37 μg/m3
Carbon Monoxide: 254.01 μg/m3
Nitrogen Dioxide: 25.12 μg/m3
Sulphur Dioxide: 2.88 μg/m3
Ozone: 37.12 μg/m3

Astronomical

Sunrise: 7:42 AM
Sun Transit: 12:22 AM
Sunset: 5:02 PM
Daylight: 9 hrs 19 mins
Moonrise: 9:18 AM
Moon Transit: 2:46 PM
Moonset: 8:28 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:16 PM - 4:46 PM

Minor Periods

7:58 PM - 9:28 PM
8:48 AM - 10:18 AM

Action Rating: 3 out of 5

Thursday, January 22, 2026

Weather Forecast

Patchy rain nearby
50.6°F
36.2°F
43.6°F
80%
0.02 in
89%
0%
5.4 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 13.15 μg/m3
PM10: 13.37 μg/m3
Carbon Monoxide: 334.55 μg/m3
Nitrogen Dioxide: 28.21 μg/m3
Sulphur Dioxide: 3.23 μg/m3
Ozone: 30.8 μg/m3

Astronomical

Sunrise: 7:42 AM
Sun Transit: 12:22 AM
Sunset: 5:03 PM
Daylight: 9 hrs 22 mins
Moonrise: 9:36 AM
Moon Transit: 3:31 PM
Moonset: 9:40 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:01 PM - 5:31 PM

Minor Periods

9:10 PM - 10:40 PM
9:06 AM - 10:36 AM

Action Rating: 3 out of 5

Friday, January 23, 2026

Weather Forecast

Patchy rain nearby
47.4°F
33.4°F
42.3°F
86%
0.05 in
88%
0%
7.6 mph
0


Air Quality

AQI: 2 - Moderate
PM2.5: 15.88 μg/m3
PM10: 16.1 μg/m3
Carbon Monoxide: 393 μg/m3
Nitrogen Dioxide: 34.58 μg/m3
Sulphur Dioxide: 3.35 μg/m3
Ozone: 22.31 μg/m3

Astronomical

Sunrise: 7:41 AM
Sun Transit: 12:22 AM
Sunset: 5:05 PM
Daylight: 9 hrs 24 mins
Moonrise: 9:53 AM
Moon Transit: 6:54 AM
Moonset: 10:53 PM
Moon Phase: Waxing Crescent
Moon Illumination: 24.4%

Best Times for Fishing or Hunting

Major Periods

6:24 AM - 8:54 AM
6:24 AM - 8:54 AM

Minor Periods

10:23 PM - 11:53 PM
9:23 AM - 10:53 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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