Water Temperature of the Coast Fork Willamette River in Cottage Grove, OR

Current Water Temperature

48.9°F

Measurement Time: Friday, November 28, 2025, 8:00 PM PST

Temperature Locations

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Local Points of Interest

Cottage Grove Lake; Cottage Grove Dam

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Coast Fork Willamette River

Station Name: COAST FORK WILLAMETTE R BLW COTTAGE GROVE DAM, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 738 feet / 225 meters

Nearest Address:
75800 Reservoir Rd
Cottage Grove, OR 97424
Lane County

GPS Coordinates: 43.72067785, -123.0497994

Nearby Water Temperatures

Coast Fork Willamette River, London, OR (5.8 mi)
Row River, Cottage Grove, OR (5.8 mi)
Row River, Dorena, OR (8.9 mi)
Middle Fork Willamette River, Fall Creek, OR (18.8 mi)
Cedar Creek, Thurston, OR (24.3 mi)
McKenzie River, Springfield, OR (24.6 mi)
Middle Fork Willamette River, Oakridge, OR (25.0 mi)
Camp Creek, Springfield, OR (25.5 mi)
Willamette River , Eugene, OR (25.8 mi)
Rock Creek, Glide, OR (26.0 mi)
McKenzie River, Eugene, OR (27.1 mi)
North Fork Middle Fork Willamette River, Westfir, OR (27.3 mi)
North Umpqua River, Idleyld Park, OR (27.5 mi)
McKenzie River, Walterville, OR (27.8 mi)
Long Tom River, Alvadore, OR (30.5 mi)

Weather for Cottage Grove, Oregon

Current Weather

39°F
Clear
Conditions: Clear
Humidity: 93%
Feels Like: 38.3°F
Wind: E 2.2 mph
Wind Gusts: 2.3 mph
Pressure: 30.14 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Sat
H: 56°F
L: 40°F
Mist
Sun
H: 42°F
L: 39°F
Partly Cloudy
Mon
H: 49°F
L: 37°F
Partly Cloudy
Tue
H: 52°F
L: 38°F
Overcast
Wed
H: 51°F
L: 34°F

Air Quality

AQI: 1 - Good
PM2.5: 5.95 μg/m3
PM10: 5.95 μg/m3
Carbon Monoxide: 186.85 μg/m3
Nitrogen Dioxide: 7.65 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 30 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:00 AM
Sunset: 4:37 PM
Daylight: 9 hrs 13 mins
Moonrise: 1:26 PM
Moon Transit: 6:12 PM
Moonset: 12:50 AM
Moon Phase: First Quarter
Moon Illumination: 68.7%

Best Times for Fishing or Hunting

Major Periods

2:12 AM - 4:42 AM
5:42 PM - 8:12 PM

Minor Periods

12:56 AM - 2:26 PM
12:20 AM - 1:50 AM

Action Rating: 2 out of 5

Beach Hazards Statement issued November 28 at 2:00PM PST until December 3 at 10:00PM PST by NWS Portland OR

Effective: Fri November 28, 2025, 2:00 PM
Expires: Sat November 29, 2025, 4:00 PM

* WHAT...Sneaker waves possible. * WHERE...North and Central Coast of Oregon, and South Washington Coast. * WHEN...From Tuesday morning through Wednesday evening. * IMPACTS...Waves can run up significantly farther on a beach than normal, including over rocks and jetties. Sneaker waves can suddenly knock beachgoers off if their feet and quickly pull them into the frigid ocean which may lead to serious injury or drowning. * ADDITIONAL DETAILS...A Beach Hazards Statement is issued when sneaker waves create potentially life-threatening conditions in the surf zone. Caution should be used when in or near the water. Always keep an eye on the waves, and be especially watchful of children. Those participating in razor clam digs should additionally exercise caution.

Remain out of the water to avoid hazardous swimming conditions.


Beach Hazards Statement issued November 28 at 10:45AM PST until December 2 at 1:00PM PST by NWS Medford OR

Effective: Fri November 28, 2025, 10:45 AM
Expires: Sat November 29, 2025, 4:00 AM

* WHAT...High risk of sneaker waves expected. * WHERE...All beaches of Douglas, Coos, and Curry Counties. * WHEN...From Monday morning through Tuesday afternoon. * IMPACTS...Sneaker waves can run up significantly farther on beaches than normal, including over rocks and jetties. These waves can suddenly knock people off of their feet and sweep them into the ocean. The waves can also move logs or other objects which could crush or trap anyone caught underneath. * ADDITIONAL DETAILS...As this long period swell arrives early Monday, it could coincide with the high tide expected around 8am PST Monday. While sneaker waves can occur at any time, the greatest risk is on an incoming tide. Please be aware of the tides if venturing out onto the beaches. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

Avoid climbing on rocks and jetties. Stay away from the ocean and remain out of the water to avoid hazardous conditions.


Saturday, November 29, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 46°F
Average Humidity: 76%
Chance of Rain: 0%
Wind: 3.8 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 6.61 μg/m3
PM10: 7.33 μg/m3
Carbon Monoxide: 199.49 μg/m3
Nitrogen Dioxide: 12.2 μg/m3
Sulphur Dioxide: 1.64 μg/m3
Ozone: 30.4 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:00 AM
Sunset: 4:37 PM
Daylight: 9 hrs 13 mins
Moonrise: 1:26 PM
Moon Transit: 6:12 PM
Moonset: 12:50 AM
Moon Phase: First Quarter
Moon Illumination: 68.7%

Best Times for Fishing or Hunting

Major Periods

2:12 AM - 4:42 AM
5:42 PM - 8:12 PM

Minor Periods

12:56 AM - 2:26 PM
12:20 AM - 1:50 AM

Action Rating: 2 out of 5

Sunday, November 30, 2025

Weather Forecast

Conditions: Mist
Average Temperature: 41.1°F
Average Humidity: 96%
Chance of Rain: 0%
Wind: 5.4 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 5.86 μg/m3
PM10: 7 μg/m3
Carbon Monoxide: 257.17 μg/m3
Nitrogen Dioxide: 8.67 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 45.32 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 12:01 AM
Sunset: 4:37 PM
Daylight: 9 hrs 12 mins
Moonrise: 1:47 PM
Moon Transit: 8:26 PM
Moonset: 2:04 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:56 PM - 10:26 PM

Minor Periods

1:17 PM - 2:47 PM
1:34 AM - 3:04 AM

Action Rating: 2 out of 5

Monday, December 1, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 41.7°F
Average Humidity: 83%
Chance of Rain: 0%
Wind: 4.5 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 11.41 μg/m3
PM10: 11.79 μg/m3
Carbon Monoxide: 285.29 μg/m3
Nitrogen Dioxide: 20.1 μg/m3
Sulphur Dioxide: 2.72 μg/m3
Ozone: 22.96 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:01 AM
Sunset: 4:36 PM
Daylight: 9 hrs 10 mins
Moonrise: 2:11 PM
Moon Transit: 9:18 PM
Moonset: 3:21 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

3:47 AM - 6:17 AM
8:48 PM - 11:18 PM

Minor Periods

1:41 PM - 3:11 PM
2:51 AM - 4:21 AM

Action Rating: 2 out of 5

Tuesday, December 2, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 43.8°F
Average Humidity: 81%
Chance of Rain: 0%
Wind: 3.4 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 11.41 μg/m3
PM10: 12.46 μg/m3
Carbon Monoxide: 267.33 μg/m3
Nitrogen Dioxide: 19.53 μg/m3
Sulphur Dioxide: 2.49 μg/m3
Ozone: 31.12 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:01 AM
Sunset: 4:36 PM
Daylight: 9 hrs 9 mins
Moonrise: 2:39 PM
Moon Transit: 10:15 PM
Moonset: 4:43 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.7%

Best Times for Fishing or Hunting

Major Periods

4:41 AM - 7:11 AM
12:00 AM - 12:00 AM

Minor Periods

2:09 PM - 3:39 PM
4:13 AM - 5:43 AM

Action Rating: 3 out of 5

Wednesday, December 3, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 41.1°F
Average Humidity: 91%
Chance of Rain: 0%
Wind: 2 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 8.99 μg/m3
PM10: 10.45 μg/m3
Carbon Monoxide: 239.47 μg/m3
Nitrogen Dioxide: 16.56 μg/m3
Sulphur Dioxide: 2.1 μg/m3
Ozone: 39.38 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 12:02 AM
Sunset: 4:36 PM
Daylight: 9 hrs 7 mins
Moonrise: 3:15 PM
Moon Transit: 11:17 PM
Moonset: 6:08 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.1%

Best Times for Fishing or Hunting

Major Periods

5:40 AM - 8:10 AM
12:00 AM - 12:00 AM

Minor Periods

2:45 PM - 4:15 PM
5:38 AM - 7:08 AM

Action Rating: 4 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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