Water Temperature of the Willamette River in Portland, OR

Current Water Temperature

46.8°F

Measurement Time: Monday, March 2, 2026, 11:30 AM 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

52°F
Clear
Clear
52.6°F
52.7°F
77%
SSE 2.2 mph
4.1 mph
52.1°F
47.3°F
0 in
25%
9 mi
1020 mbar
0

Five Day Weather Forecast

Partly Cloudy
Mon
H: 60°F
L: 46°F
Patchy rain nearby
Tue
H: 53°F
L: 46°F
Moderate rain
Wed
H: 52°F
L: 45°F
Mist
Thu
H: 48°F
L: 41°F
Patchy rain nearby
Fri
H: 51°F
L: 42°F

Air Quality

AQI: 1 - Good
PM2.5: 16.25 μg/m3
PM10: 16.45 μg/m3
Carbon Monoxide: 431.85 μg/m3
Nitrogen Dioxide: 39.45 μg/m3
Sulphur Dioxide: 2.95 μg/m3
Ozone: 6 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:22 AM
Sunset: 5:59 PM
Daylight: 11 hrs 12 mins
Moonrise: 5:27 PM
Moon Transit: 12:00 AM
Moonset: 6:31 AM
Moon Phase: Full
Moon Illumination: 99.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:52 AM - 9:22 AM

Minor Periods

4:57 PM - 6:27 PM
6:01 AM - 7:31 AM

Action Rating: 5 out of 5

Winter Weather Advisory issued March 2 at 12:28PM PST until March 4 at 10:00PM PST by NWS Portland OR

Effective: Mon March 2, 2026, 12:28 PM
Expires: Tue March 3, 2026, 10:00 AM

* WHAT...Snow expected above 4500 ft. Total snow accumulations of 4 to 8 inches. * WHERE...Cascades of Lane County and Cascades of Marion and Linn Counties. * WHEN...From 4 AM to 10 PM PST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. * ADDITIONAL DETAILS...Periods of moderate to heavy snowfall may combine with low visibilities to create difficult driving conditions.

Have a winter emergency driving kit readily available. Common items to include: flashlight, batteries, blankets, a shovel, water, non-perishable food items, tire chains, etc. For the latest road conditions and chain restrictions in Oregon, call 5 1 1, or visit: www.tripcheck.com.
Monday, March 2, 2026

Weather Forecast

Partly Cloudy
59.5°F
45.9°F
51.2°F
86%
0 in
0%
0%
2.5 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 21.27 μg/m3
PM10: 22.33 μg/m3
Carbon Monoxide: 506.65 μg/m3
Nitrogen Dioxide: 35.96 μg/m3
Sulphur Dioxide: 5.07 μg/m3
Ozone: 17.6 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:22 AM
Sunset: 5:59 PM
Daylight: 11 hrs 12 mins
Moonrise: 5:27 PM
Moon Transit: 12:00 AM
Moonset: 6:31 AM
Moon Phase: Full
Moon Illumination: 99.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:52 AM - 9:22 AM

Minor Periods

4:57 PM - 6:27 PM
6:01 AM - 7:31 AM

Action Rating: 5 out of 5

Tuesday, March 3, 2026

Weather Forecast

Patchy rain nearby
52.5°F
46°F
48.6°F
90%
0 in
79%
0%
6.7 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 11.21 μg/m3
PM10: 11.49 μg/m3
Carbon Monoxide: 360.61 μg/m3
Nitrogen Dioxide: 32.41 μg/m3
Sulphur Dioxide: 3.25 μg/m3
Ozone: 19.4 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 12:22 AM
Sunset: 6:01 PM
Daylight: 11 hrs 15 mins
Moonrise: 6:40 PM
Moon Transit: 12:15 AM
Moonset: 6:50 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:38 AM - 10:08 AM

Minor Periods

6:10 PM - 7:40 PM
6:20 AM - 7:50 AM

Action Rating: 5 out of 5

Wednesday, March 4, 2026

Weather Forecast

Moderate rain
52.2°F
44.6°F
48.6°F
88%
0.27 in
89%
0%
6.9 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 3.73 μg/m3
PM10: 4.21 μg/m3
Carbon Monoxide: 199.45 μg/m3
Nitrogen Dioxide: 9.75 μg/m3
Sulphur Dioxide: 1.99 μg/m3
Ozone: 57.52 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 12:22 AM
Sunset: 6:02 PM
Daylight: 11 hrs 19 mins
Moonrise: 7:50 PM
Moon Transit: 1:00 AM
Moonset: 7:07 AM
Moon Phase: Full
Moon Illumination: 98.2%

Best Times for Fishing or Hunting

Major Periods

12:30 AM - 3:00 AM
8:22 AM - 10:52 AM

Minor Periods

7:20 PM - 8:50 PM
6:37 AM - 8:07 AM

Action Rating: 4 out of 5

Thursday, March 5, 2026

Weather Forecast

Mist
47.8°F
41.4°F
44°F
87%
0 in
0%
0%
7.8 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 6.11 μg/m3
PM10: 7.7 μg/m3
Carbon Monoxide: 238.07 μg/m3
Nitrogen Dioxide: 13.13 μg/m3
Sulphur Dioxide: 2.22 μg/m3
Ozone: 59.8 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 12:22 AM
Sunset: 6:04 PM
Daylight: 11 hrs 22 mins
Moonrise: 8:59 PM
Moon Transit: 1:43 AM
Moonset: 7:24 AM
Moon Phase: Full
Moon Illumination: 94.0%

Best Times for Fishing or Hunting

Major Periods

1:13 AM - 3:43 AM
9:05 AM - 11:35 AM

Minor Periods

8:29 PM - 9:59 PM
6:54 AM - 8:24 AM

Action Rating: 4 out of 5

Friday, March 6, 2026

Weather Forecast

Patchy rain nearby
51.1°F
42.4°F
46.3°F
86%
0.01 in
88%
0%
3.8 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 8.02 μg/m3
PM10: 9.53 μg/m3
Carbon Monoxide: 229.63 μg/m3
Nitrogen Dioxide: 20.77 μg/m3
Sulphur Dioxide: 2.78 μg/m3
Ozone: 43.38 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:21 AM
Sunset: 6:05 PM
Daylight: 11 hrs 25 mins
Moonrise: 10:08 PM
Moon Transit: 2:25 AM
Moonset: 7:41 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.6%

Best Times for Fishing or Hunting

Major Periods

1:55 AM - 4:25 AM
9:48 AM - 12:18 AM

Minor Periods

9:38 PM - 11:08 PM
7:11 AM - 8:41 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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