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

Current Water Temperature

45.9°F

Measurement Time: Thursday, February 26, 2026, 10:50 PM PST

Temperature Locations

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Local Points of Interest

Cottage Grove Lake; Cottage Grove Dam

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

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 mi)
Camp Creek, Springfield, OR (25.5 mi)
Willamette River , Eugene, OR (25.8 mi)
Rock Creek, Glide, OR (26 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

36°F
Fog
Fog
34.9°F
35.5°F
100%
E 2.2 mph
4.2 mph
33.8°F
30.4°F
0 in
60%
0 mi
1028 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 59°F
L: 35°F
Overcast
Sat
H: 50°F
L: 36°F
Cloudy
Sun
H: 56°F
L: 44°F
Cloudy
Mon
H: 60°F
L: 42°F
Patchy rain nearby
Tue
H: 59°F
L: 38°F

Air Quality

AQI: 1 - Good
PM2.5: 6.05 μg/m3
PM10: 7.55 μg/m3
Carbon Monoxide: 189.85 μg/m3
Nitrogen Dioxide: 5.05 μg/m3
Sulphur Dioxide: 2.75 μg/m3
Ozone: 95 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 12:24 AM
Sunset: 5:59 PM
Daylight: 11 hrs 7 mins
Moonrise: 1:41 PM
Moon Transit: 9:45 PM
Moonset: 4:57 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.3%

Best Times for Fishing or Hunting

Major Periods

4:10 AM - 6:40 AM
9:15 PM - 11:45 PM

Minor Periods

1:11 PM - 2:41 PM
4:27 AM - 5:57 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued February 27 at 3:35AM PST until February 27 at 12:00PM PST by NWS Portland OR

Effective: Fri February 27, 2026, 3:35 AM
Expires: Fri February 27, 2026, 12:00 PM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Lane County Lowlands. * WHEN...Until noon PST today. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down and leave plenty of distance ahead of you. Pedestrians and cyclists should wear bright or reflective clothing to increase the chances of being seen by others in poor visibility conditions.
Friday, February 27, 2026

Weather Forecast

Sunny
59.2°F
34.9°F
45.5°F
77%
0 in
0%
0%
5.8 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 12.08 μg/m3
PM10: 14.25 μg/m3
Carbon Monoxide: 229.53 μg/m3
Nitrogen Dioxide: 19.27 μg/m3
Sulphur Dioxide: 2.92 μg/m3
Ozone: 52.16 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 12:24 AM
Sunset: 5:59 PM
Daylight: 11 hrs 7 mins
Moonrise: 1:41 PM
Moon Transit: 9:45 PM
Moonset: 4:57 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.3%

Best Times for Fishing or Hunting

Major Periods

4:10 AM - 6:40 AM
9:15 PM - 11:45 PM

Minor Periods

1:11 PM - 2:41 PM
4:27 AM - 5:57 AM

Action Rating: 3 out of 5

Saturday, February 28, 2026

Weather Forecast

Overcast
49.8°F
35.6°F
43.1°F
86%
0 in
0%
0%
2.9 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 7.82 μg/m3
PM10: 8.92 μg/m3
Carbon Monoxide: 239.81 μg/m3
Nitrogen Dioxide: 16.27 μg/m3
Sulphur Dioxide: 2.23 μg/m3
Ozone: 35.4 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 12:24 AM
Sunset: 6:00 PM
Daylight: 11 hrs 10 mins
Moonrise: 3:00 PM
Moon Transit: 10:40 PM
Moonset: 5:35 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.1%

Best Times for Fishing or Hunting

Major Periods

5:08 AM - 7:38 AM
12:00 AM - 12:00 AM

Minor Periods

2:30 PM - 4:00 PM
5:05 AM - 6:35 AM

Action Rating: 3 out of 5

Sunday, March 1, 2026

Weather Forecast

Cloudy
56.1°F
43.9°F
49.8°F
87%
0 in
0%
0%
4.7 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 6.26 μg/m3
PM10: 6.76 μg/m3
Carbon Monoxide: 247.41 μg/m3
Nitrogen Dioxide: 14.07 μg/m3
Sulphur Dioxide: 1.56 μg/m3
Ozone: 27.52 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 12:24 AM
Sunset: 6:01 PM
Daylight: 11 hrs 12 mins
Moonrise: 4:17 PM
Moon Transit: 11:30 PM
Moonset: 6:05 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.8%

Best Times for Fishing or Hunting

Major Periods

6:02 AM - 8:32 AM
12:00 AM - 12:00 AM

Minor Periods

3:47 PM - 5:17 PM
5:35 AM - 7:05 AM

Action Rating: 3 out of 5

Monday, March 2, 2026

Weather Forecast

Cloudy
59.9°F
41.6°F
49.2°F
86%
0 in
0%
0%
4.9 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 6.98 μg/m3
PM10: 7.59 μg/m3
Carbon Monoxide: 182.44 μg/m3
Nitrogen Dioxide: 12.37 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 40.48 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:24 AM
Sunset: 6:02 PM
Daylight: 11 hrs 15 mins
Moonrise: 5:31 PM
Moon Transit: 12:00 AM
Moonset: 6:30 AM
Moon Phase: Full
Moon Illumination: 99.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:51 AM - 9:21 AM

Minor Periods

5:01 PM - 6:31 PM
6:00 AM - 7:30 AM

Action Rating: 5 out of 5

Tuesday, March 3, 2026

Weather Forecast

Patchy rain nearby
58.9°F
38.4°F
46.7°F
84%
0.01 in
84%
0%
8.3 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 9.27 μg/m3
PM10: 9.56 μg/m3
Carbon Monoxide: 304.26 μg/m3
Nitrogen Dioxide: 25.27 μg/m3
Sulphur Dioxide: 1.9 μg/m3
Ozone: 30.08 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 12:24 AM
Sunset: 6:04 PM
Daylight: 11 hrs 18 mins
Moonrise: 6:42 PM
Moon Transit: 12:17 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
7:37 AM - 10:07 AM

Minor Periods

6:12 PM - 7:42 PM
6:20 AM - 7:50 AM

Action Rating: 5 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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