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

Current Water Temperature

52.0°F

Measurement Time: Tuesday, November 18, 2025, 6:20 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

34°F
Fog
Conditions: Fog
Humidity: 100%
Feels Like: 32°F
Wind: ESE 2.7 mph
Wind Gusts: 5.4 mph
Pressure: 30.08 in
Precipitation: 0 in
Cloud Cover: 60%
Visibility: 0 mi
UV Index: 0

Five Day Weather Forecast

Patchy rain nearby
Wed
H: 62°F
L: 34°F
Cloudy
Thu
H: 60°F
L: 48°F
Sunny
Fri
H: 53°F
L: 42°F
Sunny
Sat
H: 57°F
L: 39°F
Patchy rain nearby
Sun
H: 56°F
L: 37°F

Air Quality

AQI: 2 - Moderate
PM2.5: 16.85 μg/m3
PM10: 20.45 μg/m3
Carbon Monoxide: 211.85 μg/m3
Nitrogen Dioxide: 14.75 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 18 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 11:57 AM
Sunset: 4:43 PM
Daylight: 9 hrs 31 mins
Moonrise: 6:56 AM
Moon Transit: 11:31 AM
Moonset: 4:01 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

6:52 PM - 9:22 PM
11:01 AM - 1:31 PM

Minor Periods

3:31 PM - 5:01 PM
6:26 AM - 7:56 AM

Action Rating: 4 out of 5

Beach Hazards Statement issued November 18 at 2:30PM PST until November 24 at 4:00AM PST by NWS Portland OR

Effective: Tue November 18, 2025, 2:30 PM
Expires: Wed November 19, 2025, 4:00 PM

* WHAT...Sneaker waves possible. * WHERE...North and Central Coast of Oregon, and South Washington Coast. * WHEN...From late Wednesday night through late Sunday night. * IMPACTS...Waves can run up significantly farther on a beach than normal, including over rocks and jetties. Sneaker waves can suddenly knock people off of 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 exercise caution.

Remain out of the water to avoid hazardous swimming conditions.


High Surf Advisory issued November 18 at 2:06PM PST until November 21 at 4:00AM PST by NWS Medford OR

Effective: Tue November 18, 2025, 2:06 PM
Expires: Wed November 19, 2025, 5:45 AM

* WHAT...Large breaking waves of 20 to 24 feet. * WHERE...South Central Oregon Coast and Curry County Coast. * WHEN...From 10 AM Thursday to 4 AM PST Friday. * IMPACTS...Large breaking waves will create hazardous conditions along and within the surf zone, and could inundate beaches and low lying shorelines. Beach erosion is possible, and exposed infrastructure may be damaged. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

Stay away from the surf zone and off of jetties. Area beaches may become hazardous due to dangerous surf conditions.


Wednesday, November 19, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 45.2°F
Average Humidity: 77%
Chance of Rain: 90%
Wind: 3.4 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 13.16 μg/m3
PM10: 16.12 μg/m3
Carbon Monoxide: 202.89 μg/m3
Nitrogen Dioxide: 13.93 μg/m3
Sulphur Dioxide: 2.55 μg/m3
Ozone: 34.72 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 11:57 AM
Sunset: 4:43 PM
Daylight: 9 hrs 31 mins
Moonrise: 6:56 AM
Moon Transit: 11:31 AM
Moonset: 4:01 PM
Moon Phase: New
Moon Illumination: 0.3%

Best Times for Fishing or Hunting

Major Periods

6:52 PM - 9:22 PM
11:01 AM - 1:31 PM

Minor Periods

3:31 PM - 5:01 PM
6:26 AM - 7:56 AM

Action Rating: 4 out of 5

Thursday, November 20, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 51.5°F
Average Humidity: 67%
Chance of Rain: 0%
Wind: 4.3 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 7.15 μg/m3
PM10: 7.71 μg/m3
Carbon Monoxide: 167.13 μg/m3
Nitrogen Dioxide: 10.01 μg/m3
Sulphur Dioxide: 1.71 μg/m3
Ozone: 59.4 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 11:57 AM
Sunset: 4:42 PM
Daylight: 9 hrs 29 mins
Moonrise: 8:00 AM
Moon Transit: 12:19 AM
Moonset: 4:34 PM
Moon Phase: New
Moon Illumination: 2.7%

Best Times for Fishing or Hunting

Major Periods

7:40 PM - 10:10 PM
11:49 AM - 2:19 PM

Minor Periods

4:04 PM - 5:34 PM
7:30 AM - 9:00 AM

Action Rating: 4 out of 5

Friday, November 21, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 45.9°F
Average Humidity: 80%
Chance of Rain: 0%
Wind: 3.6 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 14.36 μg/m3
PM10: 15.3 μg/m3
Carbon Monoxide: 190.21 μg/m3
Nitrogen Dioxide: 21.89 μg/m3
Sulphur Dioxide: 2.43 μg/m3
Ozone: 33.64 μg/m3

Astronomical

Sunrise: 7:15 AM
Sun Transit: 11:58 AM
Sunset: 4:42 PM
Daylight: 9 hrs 27 mins
Moonrise: 9:02 AM
Moon Transit: 1:09 PM
Moonset: 5:15 PM
Moon Phase: New
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

8:31 PM - 11:01 PM
12:39 AM - 3:09 PM

Minor Periods

4:45 PM - 6:15 PM
8:32 AM - 10:02 AM

Action Rating: 4 out of 5

Saturday, November 22, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 44.9°F
Average Humidity: 83%
Chance of Rain: 0%
Wind: 2.9 mph
UV Index: 0.3

Air Quality

AQI: 2 - Moderate
PM2.5: 18.7 μg/m3
PM10: 20.01 μg/m3
Carbon Monoxide: 265.65 μg/m3
Nitrogen Dioxide: 26.99 μg/m3
Sulphur Dioxide: 3.73 μg/m3
Ozone: 21.52 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 11:58 AM
Sunset: 4:41 PM
Daylight: 9 hrs 25 mins
Moonrise: 9:58 AM
Moon Transit: 2:01 PM
Moonset: 6:06 PM
Moon Phase: New
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

9:23 PM - 11:53 PM
1:31 PM - 4:01 PM

Minor Periods

5:36 PM - 7:06 PM
9:28 AM - 10:58 AM

Action Rating: 3 out of 5

Sunday, November 23, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 42°F
Average Humidity: 85%
Chance of Rain: 56%
Wind: 11.2 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 25.28 μg/m3
PM10: 26.87 μg/m3
Carbon Monoxide: 446.31 μg/m3
Nitrogen Dioxide: 31.61 μg/m3
Sulphur Dioxide: 3.7 μg/m3
Ozone: 10.62 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 11:58 AM
Sunset: 4:40 PM
Daylight: 9 hrs 23 mins
Moonrise: 10:46 AM
Moon Transit: 2:53 PM
Moonset: 7:05 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:23 PM - 4:53 PM

Minor Periods

6:35 PM - 8:05 PM
10:16 AM - 11:46 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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