Water Temperature of the Willamette River in Portland, OR

Current Water Temperature

54.3°F 12.4°C
Cold Thermal Gear Required
54.3°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Cold shock risk with rapid dexterity loss (10–15 mins). Wetsuit or drysuit strongly advised for any immersion.

Measurement Time: Thursday, November 12, 2026, 1:30 PM PST

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

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

49.6°F
Overcast
Conditions: Overcast
Humidity: 87%
Feels Like: 48°F
Wind: ESE 1.2 mph
Wind Gusts: 8.7 mph
Pressure: 29.52 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 8.8 mi
UV Index: 0

Five-Day Weather Forecast

Overcast
Thu
H: 58°F
L: 48°F
Slight Rain
Fri
H: 54°F
L: 47°F
Slight Rain
Sat
H: 55°F
L: 46°F
Moderate Drizzle
Sun
H: 55°F
L: 48°F
Light Drizzle
Mon
H: 55°F
L: 45°F

Air Quality

EPA Index 2 • Moderate

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

PM2.5
46.2 μg/m³
Unhealthy for Sensitive Groups
PM10
47.5 μg/m³
Good
Ozone (O3)
0 μg/m³
Photochemical
NO2
46.3 μg/m³
Nitrogen Dioxide
SO2
2.6 μg/m³
Sulfur Dioxide
CO
567 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 38m daylight
Sunrise 7:06 AM
Solar Noon 11:54 AM
Sunset 4:44 PM
Moon
Waxing Crescent • 6%
Moonrise 10:49 AM
Transit 2:47 PM
Moonset 6:48 PM

Best Times for Fishing or Hunting

Major Periods

1:51 AM - 4:21 AM
2:17 PM - 4:47 PM

Minor Periods

10:19 AM - 11:49 AM
6:18 PM - 7:48 PM
Action Rating:
Good Action 3/5
Thursday, November 12, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 52.2°F
Average Humidity: 83%
Chance of Rain: 3%
Wind: 7.8 mph
UV Index: 1.6

Air Quality

EPA Index 3 • Unhealthy for Sensitive Groups
PM2.5
36.3 μg/m³
Unhealthy for Sensitive Groups
PM10
37.7 μg/m³
Good
Ozone (O3)
6.5 μg/m³
Photochemical
NO2
37.5 μg/m³
Nitrogen Dioxide
SO2
1.7 μg/m³
Sulfur Dioxide
CO
473.4 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 38m daylight
Sunrise 7:06 AM
Solar Noon 11:54 AM
Sunset 4:44 PM
Moon
Waxing Crescent • 6%
Moonrise 10:49 AM
Transit 2:47 PM
Moonset 6:48 PM

Best Times for Fishing or Hunting

Major Periods

1:51 AM - 4:21 AM
2:17 PM - 4:47 PM

Minor Periods

10:19 AM - 11:49 AM
6:18 PM - 7:48 PM
Action Rating:
Good Action 3/5
Friday, November 13, 2026

Weather Forecast

Conditions: Slight Rain
Average Temperature: 50.4°F
Average Humidity: 81%
Chance of Rain: 91%
Wind: 12.7 mph
UV Index: 0.8

Air Quality

EPA Index 3 • Unhealthy for Sensitive Groups
PM2.5
11.5 μg/m³
Good
PM10
12.2 μg/m³
Good
Ozone (O3)
41.8 μg/m³
Photochemical
NO2
17.9 μg/m³
Nitrogen Dioxide
SO2
0.7 μg/m³
Sulfur Dioxide
CO
215.4 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 35m daylight
Sunrise 7:07 AM
Solar Noon 11:55 AM
Sunset 4:42 PM
Moon
Waxing Crescent • 13%
Moonrise 11:32 AM
Transit 3:38 PM
Moonset 7:48 PM

Best Times for Fishing or Hunting

Major Periods

2:42 AM - 5:12 AM
3:08 PM - 5:38 PM

Minor Periods

11:02 AM - 12:32 PM
7:18 PM - 8:48 PM
Action Rating:
Fair Action 2/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Slight Rain
Average Temperature: 51.1°F
Average Humidity: 83%
Chance of Rain: 94%
Wind: 12.6 mph
UV Index: 1.1

Air Quality

EPA Index 2 • Moderate
PM2.5
6.7 μg/m³
Good
PM10
7.1 μg/m³
Good
Ozone (O3)
54.3 μg/m³
Photochemical
NO2
10.9 μg/m³
Nitrogen Dioxide
SO2
0.6 μg/m³
Sulfur Dioxide
CO
166.5 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 33m daylight
Sunrise 7:09 AM
Solar Noon 11:55 AM
Sunset 4:41 PM
Moon
Waxing Crescent • 21%
Moonrise 12:07 PM
Transit 4:26 PM
Moonset 8:52 PM

Best Times for Fishing or Hunting

Major Periods

3:32 AM - 6:02 AM
3:56 PM - 6:26 PM

Minor Periods

11:37 AM - 1:07 PM
8:22 PM - 9:52 PM
Action Rating:
Fair Action 2/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Moderate Drizzle
Average Temperature: 52.2°F
Average Humidity: 82%
Chance of Rain: 94%
Wind: 8.1 mph
UV Index: 1.6

Air Quality

EPA Index 2 • Moderate
PM2.5
10.7 μg/m³
Good
PM10
11.5 μg/m³
Good
Ozone (O3)
52.3 μg/m³
Photochemical
NO2
12.1 μg/m³
Nitrogen Dioxide
SO2
0.7 μg/m³
Sulfur Dioxide
CO
155.9 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 30m daylight
Sunrise 7:10 AM
Solar Noon 11:55 AM
Sunset 4:40 PM
Moon
Waxing Crescent • 31%
Moonrise 12:35 PM
Transit 5:12 PM
Moonset 9:59 PM

Best Times for Fishing or Hunting

Major Periods

4:19 AM - 6:49 AM
4:42 PM - 7:12 PM

Minor Periods

12:05 PM - 1:35 PM
9:29 PM - 10:59 PM
Action Rating:
Very Good 4/5
Monday, November 16, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 48.9°F
Average Humidity: 81%
Chance of Rain: 42%
Wind: 3.7 mph
UV Index: 2.5

Air Quality

EPA Index 2 • Moderate
PM2.5
15.8 μg/m³
Moderate
PM10
16.9 μg/m³
Good
Ozone (O3)
38.4 μg/m³
Photochemical
NO2
21.7 μg/m³
Nitrogen Dioxide
SO2
1 μg/m³
Sulfur Dioxide
CO
223.6 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 28m daylight
Sunrise 7:11 AM
Solar Noon 11:55 AM
Sunset 4:39 PM
Moon
First Quarter • 42%
Moonrise 12:58 PM
Transit 5:56 PM
Moonset 11:06 PM

Best Times for Fishing or Hunting

Major Periods

5:04 AM - 7:34 AM
5:26 PM - 7:56 PM

Minor Periods

12:28 PM - 1:58 PM
10:36 PM - 12:06 AM
Action Rating:
Good Action 3/5
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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