Water Temperature of the Willamette River in Portland, OR

Current Water Temperature

49.3°F

Measurement Time: Monday, March 9, 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

41.2°F
Partly cloudy
Partly cloudy
37.9°F
41.3°F
86%
W 4.9 mph
6.6 mph
37.7°F
35.5°F
0 in
75%
9 mi
1022 mbar
1.1

Five Day Weather Forecast

Patchy rain nearby
Mon
H: 46°F
L: 37°F
Fog
Tue
H: 48°F
L: 35°F
Overcast
Wed
H: 51°F
L: 41°F
Moderate rain
Thu
H: 51°F
L: 43°F
Heavy rain
Fri
H: 51°F
L: 49°F

Air Quality

AQI: 1 - Good
PM2.5: 4.95 μg/m3
PM10: 7.15 μg/m3
Carbon Monoxide: 171.85 μg/m3
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 94 μg/m3

Astronomical

Sunrise: 7:34 AM
Sun Transit: 1:21 PM
Sunset: 7:09 PM
Daylight: 11 hrs 35 mins
Moonrise: 1:24 AM
Moon Transit: 5:41 AM
Moonset: 9:54 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%

Best Times for Fishing or Hunting

Major Periods

5:11 AM - 7:41 AM
1:06 PM - 3:36 PM

Minor Periods

9:24 AM - 10:54 AM
12:54 AM - 2:24 AM

Action Rating: 3 out of 5

Winter Weather Advisory issued March 8 at 10:55PM PDT until March 10 at 5:00PM PDT by NWS Portland OR

Effective: Sun March 8, 2026, 10:55 PM
Expires: Mon March 9, 2026, 3:00 PM

* WHAT...Snow expected. Total snow accumulations between 4 and 10 inches. Winds gusting as high as 40 mph. * WHERE...North Oregon Cascades. * WHEN...From 5 AM Monday to 5 PM PDT Tuesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous.

Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Visit www.tripcheck.com to view road conditions in Oregon. 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.


Winter Weather Advisory issued March 8 at 10:55PM PDT until March 10 at 5:00PM PDT by NWS Portland OR

Effective: Sun March 8, 2026, 10:55 PM
Expires: Mon March 9, 2026, 3:00 PM

* WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations between 6 and 10 inches. Winds gusting as high as 35 mph. For the Winter Storm Watch, heavy snow possible. Total snow accumulations up to 14 inches possible. Winds could gust as high as 45 mph. * WHERE...South Washington Cascades. * WHEN...For the Winter Weather Advisory, from 5 AM Monday to 5 PM PDT Tuesday. For the Winter Storm Watch, from Tuesday afternoon through Wednesday afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Roads, and especially bridges and overpasses, will likely become slick and hazardous.

Winterize your vehicle and have a winter emergency driving kit readily available. Make sure your emergency kit has the following items: flashlights, batteries, blankets, a shovel, water, non-perishable food items, tire chains, etc. Now is a good time to put snow tires on your vehicle. Check on friends and family to see if they need help preparing. Monitor the latest forecasts and warnings for updates on this situation. Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.


Winter Storm Watch issued March 8 at 10:55PM PDT until March 11 at 5:00PM PDT by NWS Portland OR

Effective: Sun March 8, 2026, 10:55 PM
Expires: Mon March 9, 2026, 3:00 PM

* WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations between 6 and 10 inches. Winds gusting as high as 35 mph. For the Winter Storm Watch, heavy snow possible. Total snow accumulations up to 14 inches possible. Winds could gust as high as 45 mph. * WHERE...South Washington Cascades. * WHEN...For the Winter Weather Advisory, from 5 AM Monday to 5 PM PDT Tuesday. For the Winter Storm Watch, from Tuesday afternoon through Wednesday afternoon. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Roads, and especially bridges and overpasses, will likely become slick and hazardous.

Winterize your vehicle and have a winter emergency driving kit readily available. Make sure your emergency kit has the following items: flashlights, batteries, blankets, a shovel, water, non-perishable food items, tire chains, etc. Now is a good time to put snow tires on your vehicle. Check on friends and family to see if they need help preparing. Monitor the latest forecasts and warnings for updates on this situation. Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1.


Monday, March 9, 2026

Weather Forecast

Patchy rain nearby
45.9°F
36.7°F
40.7°F
81%
0.03 in
87%
0%
10.5 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 7.03 μg/m3
PM10: 9.69 μg/m3
Carbon Monoxide: 197.29 μg/m3
Nitrogen Dioxide: 9.11 μg/m3
Sulphur Dioxide: 2.12 μg/m3
Ozone: 72.72 μg/m3

Astronomical

Sunrise: 7:34 AM
Sun Transit: 1:21 PM
Sunset: 7:09 PM
Daylight: 11 hrs 35 mins
Moonrise: 1:24 AM
Moon Transit: 5:41 AM
Moonset: 9:54 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.5%

Best Times for Fishing or Hunting

Major Periods

5:11 AM - 7:41 AM
1:06 PM - 3:36 PM

Minor Periods

9:24 AM - 10:54 AM
12:54 AM - 2:24 AM

Action Rating: 3 out of 5

Tuesday, March 10, 2026

Weather Forecast

Fog
47.7°F
34.7°F
40.3°F
87%
0 in
0%
0%
10.3 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 10.05 μg/m3
PM10: 13.1 μg/m3
Carbon Monoxide: 253.65 μg/m3
Nitrogen Dioxide: 20.19 μg/m3
Sulphur Dioxide: 2.85 μg/m3
Ozone: 57.52 μg/m3

Astronomical

Sunrise: 7:32 AM
Sun Transit: 12:00 AM
Sunset: 7:10 PM
Daylight: 11 hrs 38 mins
Moonrise: 2:30 AM
Moon Transit: 6:31 AM
Moonset: 10:31 AM
Moon Phase: Last Quarter
Moon Illumination: 47.2%

Best Times for Fishing or Hunting

Major Periods

6:01 AM - 8:31 AM
1:56 PM - 4:26 PM

Minor Periods

10:01 AM - 11:31 AM
2:00 AM - 3:30 AM

Action Rating: 2 out of 5

Wednesday, March 11, 2026

Weather Forecast

Overcast
50.7°F
41°F
44.8°F
89%
0 in
0%
0%
15.7 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 4.42 μg/m3
PM10: 5.5 μg/m3
Carbon Monoxide: 165.41 μg/m3
Nitrogen Dioxide: 7.57 μg/m3
Sulphur Dioxide: 1.94 μg/m3
Ozone: 74.44 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 12:00 AM
Sunset: 7:11 PM
Daylight: 11 hrs 41 mins
Moonrise: 3:28 AM
Moon Transit: 7:22 AM
Moonset: 11:16 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%

Best Times for Fishing or Hunting

Major Periods

6:52 AM - 9:22 AM
2:47 PM - 5:17 PM

Minor Periods

10:46 AM - 12:16 AM
2:58 AM - 4:28 AM

Action Rating: 2 out of 5

Thursday, March 12, 2026

Weather Forecast

Moderate rain
50.6°F
43.1°F
47.1°F
94%
0.45 in
83%
0%
14.1 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 2.82 μg/m3
PM10: 3.03 μg/m3
Carbon Monoxide: 186.81 μg/m3
Nitrogen Dioxide: 9.25 μg/m3
Sulphur Dioxide: 1.81 μg/m3
Ozone: 64.44 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 12:00 AM
Sunset: 7:13 PM
Daylight: 11 hrs 44 mins
Moonrise: 4:20 AM
Moon Transit: 8:14 AM
Moonset: 12:12 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:44 AM - 10:14 AM
3:39 PM - 6:09 PM

Minor Periods

11:42 AM - 1:12 PM
3:50 AM - 5:20 AM

Action Rating: 3 out of 5

Friday, March 13, 2026

Weather Forecast

Heavy rain
51.3°F
49.4°F
50.3°F
92%
1.18 in
64%
0%
15.4 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.37 μg/m3
PM10: 3.7 μg/m3
Carbon Monoxide: 158.23 μg/m3
Nitrogen Dioxide: 8.77 μg/m3
Sulphur Dioxide: 1.84 μg/m3
Ozone: 61.46 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:00 AM
Sunset: 7:14 PM
Daylight: 11 hrs 48 mins
Moonrise: 5:02 AM
Moon Transit: 9:06 AM
Moonset: 1:16 PM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%

Best Times for Fishing or Hunting

Major Periods

8:36 AM - 11:06 AM
4:31 PM - 7:01 PM

Minor Periods

12:46 AM - 2:16 PM
4:32 AM - 6:02 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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