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

Current Water Temperature

41.9°F

Measurement Time: Sunday, February 1, 2026, 12:40 AM 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

46.9°F
Overcast
Overcast
47°F
42.9°F
90%
SSE 2.2 mph
4.7 mph
40.5°F
38.2°F
0 in
100%
8 mi
1020 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Sun
H: 57°F
L: 42°F
Sunny
Mon
H: 59°F
L: 41°F
Cloudy
Tue
H: 65°F
L: 47°F
Sunny
Wed
H: 65°F
L: 43°F
Sunny
Thu
H: 64°F
L: 38°F

Air Quality

AQI: 2 - Moderate
PM2.5: 5.85 μg/m3
PM10: 7.95 μg/m3
Carbon Monoxide: 151.85 μg/m3
Nitrogen Dioxide: 4.85 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 63 μg/m3

Astronomical

Sunrise: 7:28 AM
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%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:20 AM - 9:50 AM

Minor Periods

4:52 PM - 6:22 PM
7:07 AM - 8:37 AM

Action Rating: 5 out of 5

Beach Hazards Statement issued January 31 at 2:18PM PST until February 2 at 4:00PM PST by NWS Portland OR

Effective: Sat January 31, 2026, 2:18 PM
Expires: Mon February 2, 2026, 4:00 PM

* WHAT...Sneaker waves possible. * WHERE...North and Central Coast of Oregon, and South Washington Coast. * WHEN...Through Monday afternoon. * 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...Keep children and pets away from the surf zone. Keep off of jetties, rocks and logs near the surf zone. If you see someone swept into the sea do not swim in after them. Call 911 and keep an eye on them until help arrives.

Remain out of the water to avoid hazardous swimming conditions.
Sunday, February 1, 2026

Weather Forecast

Patchy rain nearby
57°F
42.3°F
48°F
71%
0.06 in
84%
0%
7.2 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 14.51 μg/m3
PM10: 15.99 μg/m3
Carbon Monoxide: 227.81 μg/m3
Nitrogen Dioxide: 21.15 μg/m3
Sulphur Dioxide: 1.83 μg/m3
Ozone: 44.68 μg/m3

Astronomical

Sunrise: 7:28 AM
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%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:20 AM - 9:50 AM

Minor Periods

4:52 PM - 6:22 PM
7:07 AM - 8:37 AM

Action Rating: 5 out of 5

Monday, February 2, 2026

Weather Forecast

Sunny
59.4°F
40.6°F
48.8°F
76%
0 in
0%
0%
3.6 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 8.02 μg/m3
PM10: 9.74 μg/m3
Carbon Monoxide: 187.37 μg/m3
Nitrogen Dioxide: 16.36 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 35.12 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:25 AM
Sunset: 5:25 PM
Daylight: 9 hrs 57 mins
Moonrise: 6:40 PM
Moon Transit: 12:51 AM
Moonset: 8:05 AM
Moon Phase: Full
Moon Illumination: 99.4%

Best Times for Fishing or Hunting

Major Periods

12:21 AM - 2:51 AM
8:12 AM - 10:42 AM

Minor Periods

6:10 PM - 7:40 PM
7:35 AM - 9:05 AM

Action Rating: 4 out of 5

Tuesday, February 3, 2026

Weather Forecast

Cloudy
65.1°F
47.3°F
53.4°F
62%
0 in
0%
0%
2.9 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 8.18 μg/m3
PM10: 9.04 μg/m3
Carbon Monoxide: 213.09 μg/m3
Nitrogen Dioxide: 23.37 μg/m3
Sulphur Dioxide: 1.94 μg/m3
Ozone: 29.28 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:26 AM
Sunset: 5:26 PM
Daylight: 10 hrs mins
Moonrise: 7:52 PM
Moon Transit: 1:40 AM
Moonset: 8:28 AM
Moon Phase: Full
Moon Illumination: 96.3%

Best Times for Fishing or Hunting

Major Periods

1:10 AM - 3:40 AM
9:01 AM - 11:31 AM

Minor Periods

7:22 PM - 8:52 PM
7:58 AM - 9:28 AM

Action Rating: 3 out of 5

Wednesday, February 4, 2026

Weather Forecast

Sunny
65.1°F
43.1°F
52.1°F
68%
0 in
0%
0%
3.1 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 9.88 μg/m3
PM10: 10.42 μg/m3
Carbon Monoxide: 271.38 μg/m3
Nitrogen Dioxide: 24.99 μg/m3
Sulphur Dioxide: 1.95 μg/m3
Ozone: 28.84 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 12:26 AM
Sunset: 5:27 PM
Daylight: 10 hrs 2 mins
Moonrise: 9:02 PM
Moon Transit: 2:26 AM
Moonset: 8:47 AM
Moon Phase: Full
Moon Illumination: 90.9%

Best Times for Fishing or Hunting

Major Periods

1:56 AM - 4:26 AM
9:45 AM - 12:15 AM

Minor Periods

8:32 PM - 10:02 PM
8:17 AM - 9:47 AM

Action Rating: 3 out of 5

Thursday, February 5, 2026

Weather Forecast

Sunny
64°F
37.9°F
48.2°F
72%
0 in
0%
0%
3.4 mph
0


Air Quality

AQI: 2 - Moderate
PM2.5: 16.69 μg/m3
PM10: 17.33 μg/m3
Carbon Monoxide: 413.02 μg/m3
Nitrogen Dioxide: 33.15 μg/m3
Sulphur Dioxide: 2.33 μg/m3
Ozone: 27.15 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:26 AM
Sunset: 5:29 PM
Daylight: 10 hrs 5 mins
Moonrise: 10:10 PM
Moon Transit: 3:09 AM
Moonset: 9:05 AM
Moon Phase: Waning Gibbous
Moon Illumination: 83.4%

Best Times for Fishing or Hunting

Major Periods

2:39 AM - 5:09 AM
10:28 AM - 12:58 AM

Minor Periods

9:40 PM - 11:10 PM
8:35 AM - 10:05 AM

Action Rating: 2 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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