Water Temperature of the Coast Fork Willamette River in Cottage Grove, OR
Current Water Temperature
40.8°F
Measurement Time: Wednesday, January 28, 2026, 5:30 AM PST
Temperature Locations
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Local Points of Interest
Cottage Grove Lake; Cottage Grove DamCoast 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
55°F

Overcast
54.2°F
51.5°F
69%
S 4.9 mph
6.3 mph
51.9°F
41.8°F
0 in
100%
9 mi
1028 mbar
0.7
Five Day Weather Forecast

Wed
H: 57°F
L: 39°F

Thu
H: 59°F
L: 43°F

Fri
H: 59°F
L: 53°F

Sat
H: 63°F
L: 44°F

Sun
H: 49°F
L: 38°F
Air Quality
AQI:
2 - Moderate
PM2.5:
9.45 μg/m3
PM10:
13.75 μg/m3
Carbon Monoxide: 175.85 μg/m3
Nitrogen Dioxide: 10.65 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 60 μg/m3
Nitrogen Dioxide: 10.65 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 60 μg/m3
Astronomical
Sunrise: 7:33 AM
Sun Transit: 12:25 AM
Sunset: 5:18 PM
Daylight: 9 hrs 45 mins
Sun Transit: 12:25 AM
Sunset: 5:18 PM
Daylight: 9 hrs 45 mins
Moonrise: 12:29 AM
Moon Transit: 8:49 PM
Moonset: 4:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.1%
Moon Transit: 8:49 PM
Moonset: 4:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.1%
Best Times for Fishing or Hunting
Major Periods
3:11 AM - 5:41 AM8:19 PM - 10:49 PM
Minor Periods
11:59 AM - 1:29 PM3:32 AM - 5:02 AM
Action Rating: 2 out of 5
Wednesday, January 28, 2026
Weather Forecast
Sunny
56.8°F
38.5°F
45.6°F
70%
0 in
0%
0%
4.9 mph
0.2
Air Quality
AQI:
1 - Good
PM2.5:
7.82 μg/m3
PM10:
9.41 μg/m3
Carbon Monoxide: 172.17 μg/m3
Nitrogen Dioxide: 9.05 μg/m3
Sulphur Dioxide: 1.79 μg/m3
Ozone: 72.8 μg/m3
Nitrogen Dioxide: 9.05 μg/m3
Sulphur Dioxide: 1.79 μg/m3
Ozone: 72.8 μg/m3
Astronomical
Sunrise: 7:33 AM
Sun Transit: 12:25 AM
Sunset: 5:18 PM
Daylight: 9 hrs 45 mins
Sun Transit: 12:25 AM
Sunset: 5:18 PM
Daylight: 9 hrs 45 mins
Moonrise: 12:29 AM
Moon Transit: 8:49 PM
Moonset: 4:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.1%
Moon Transit: 8:49 PM
Moonset: 4:02 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.1%
Best Times for Fishing or Hunting
Major Periods
3:11 AM - 5:41 AM8:19 PM - 10:49 PM
Minor Periods
11:59 AM - 1:29 PM3:32 AM - 5:02 AM
Action Rating: 2 out of 5
Thursday, January 29, 2026
Weather Forecast
Patchy rain nearby
59°F
43.2°F
52.3°F
55%
0 in
89%
0%
4.7 mph
0.2
Air Quality
AQI:
1 - Good
PM2.5:
7.79 μg/m3
PM10:
11.08 μg/m3
Carbon Monoxide: 176.81 μg/m3
Nitrogen Dioxide: 8.63 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 57.36 μg/m3
Nitrogen Dioxide: 8.63 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 57.36 μg/m3
Astronomical
Sunrise: 7:32 AM
Sun Transit: 12:25 AM
Sunset: 5:19 PM
Daylight: 9 hrs 48 mins
Sun Transit: 12:25 AM
Sunset: 5:19 PM
Daylight: 9 hrs 48 mins
Moonrise: 1:29 PM
Moon Transit: 9:54 PM
Moonset: 5:14 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.7%
Moon Transit: 9:54 PM
Moonset: 5:14 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.7%
Best Times for Fishing or Hunting
Major Periods
4:15 AM - 6:45 AM9:24 PM - 11:54 PM
Minor Periods
12:59 AM - 2:29 PM4:44 AM - 6:14 AM
Action Rating: 2 out of 5
Friday, January 30, 2026
Weather Forecast
Overcast
58.6°F
52.5°F
56°F
42%
0 in
0%
0%
3.4 mph
0.2
Air Quality
AQI:
1 - Good
PM2.5:
10.72 μg/m3
PM10:
13.49 μg/m3
Carbon Monoxide: 219.89 μg/m3
Nitrogen Dioxide: 21.43 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 33.12 μg/m3
Nitrogen Dioxide: 21.43 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 33.12 μg/m3
Astronomical
Sunrise: 7:31 AM
Sun Transit: 12:25 AM
Sunset: 5:21 PM
Daylight: 9 hrs 50 mins
Sun Transit: 12:25 AM
Sunset: 5:21 PM
Daylight: 9 hrs 50 mins
Moonrise: 2:42 PM
Moon Transit: 10:57 PM
Moonset: 6:15 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.4%
Moon Transit: 10:57 PM
Moonset: 6:15 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.4%
Best Times for Fishing or Hunting
Major Periods
5:20 AM - 7:50 AM12:00 AM - 12:00 AM
Minor Periods
2:12 PM - 3:42 PM5:45 AM - 7:15 AM
Action Rating: 4 out of 5
Saturday, January 31, 2026
Weather Forecast
Overcast
62.8°F
44.1°F
52.7°F
57%
0 in
0%
0%
3.1 mph
0.3
Air Quality
AQI:
1 - Good
PM2.5:
14.2 μg/m3
PM10:
16.71 μg/m3
Carbon Monoxide: 242.41 μg/m3
Nitrogen Dioxide: 21.2 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 31.8 μg/m3
Nitrogen Dioxide: 21.2 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 31.8 μg/m3
Astronomical
Sunrise: 7:30 AM
Sun Transit: 12:25 AM
Sunset: 5:22 PM
Daylight: 9 hrs 52 mins
Sun Transit: 12:25 AM
Sunset: 5:22 PM
Daylight: 9 hrs 52 mins
Moonrise: 4:02 PM
Moon Transit: 11:57 PM
Moonset: 7:01 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.9%
Moon Transit: 11:57 PM
Moonset: 7:01 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.9%
Best Times for Fishing or Hunting
Major Periods
6:22 AM - 8:52 AM12:00 AM - 12:00 AM
Minor Periods
3:32 PM - 5:02 PM6:31 AM - 8:01 AM
Action Rating: 3 out of 5
Sunday, February 1, 2026
Weather Forecast
Moderate rain
49.1°F
38.2°F
44.5°F
91%
0.21 in
88%
0%
4 mph
0.1
Air Quality
AQI:
2 - Moderate
PM2.5:
16.37 μg/m3
PM10:
17.81 μg/m3
Carbon Monoxide: 372.31 μg/m3
Nitrogen Dioxide: 23.82 μg/m3
Sulphur Dioxide: 1.83 μg/m3
Ozone: 24.54 μg/m3
Nitrogen Dioxide: 23.82 μg/m3
Sulphur Dioxide: 1.83 μg/m3
Ozone: 24.54 μg/m3
Astronomical
Sunrise: 7:28 AM
Sun Transit: 12:25 AM
Sunset: 5:23 PM
Daylight: 9 hrs 55 mins
Sun Transit: 12:25 AM
Sunset: 5:23 PM
Daylight: 9 hrs 55 mins
Moonrise: 5:22 PM
Moon Transit: 12:00 AM
Moonset: 7:37 AM
Moon Phase: Full
Moon Illumination: 99.9%
Moon Transit: 12:00 AM
Moonset: 7:37 AM
Moon Phase: Full
Moon Illumination: 99.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM7:20 AM - 9:50 AM
Minor Periods
4:52 PM - 6:22 PM7:07 AM - 8:37 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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