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

Current Water Temperature

43.3°F

Measurement Time: Thursday, January 1, 2026, 3:00 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

41.2°F
Overcast
Overcast
40.4°F
46.8°F
96%
SW 2.5 mph
5.2 mph
46.6°F
42.4°F
0.01 in
100%
9 mi
1010 mbar
0

Five Day Weather Forecast

Moderate rain
Thu
H: 45°F
L: 38°F
Patchy rain nearby
Fri
H: 57°F
L: 46°F
Moderate rain
Sat
H: 55°F
L: 46°F
Moderate rain
Sun
H: 47°F
L: 41°F
Moderate rain
Mon
H: 46°F
L: 40°F

Air Quality

AQI: 1 - Good
PM2.5: 5.05 μg/m3
PM10: 5.25 μg/m3
Carbon Monoxide: 207.85 μg/m3
Nitrogen Dioxide: 9.85 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 21 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:15 AM
Sunset: 4:46 PM
Daylight: 9 hrs mins
Moonrise: 2:43 PM
Moon Transit: 11:07 PM
Moonset: 6:22 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.0%

Best Times for Fishing or Hunting

Major Periods

5:27 AM - 7:57 AM
12:00 AM - 12:00 AM

Minor Periods

2:13 PM - 3:43 PM
5:52 AM - 7:22 AM

Action Rating: 4 out of 5

Coastal Flood Advisory issued January 1 at 1:53PM PST until January 3 at 1:00PM PST by NWS Medford OR

Effective: Thu January 1, 2026, 1:53 PM
Expires: Fri January 2, 2026, 5:00 AM

* WHAT...High astronomical tides and an increase in surge associated with storm systems offshore resulting in minor coastal flooding at times of high tide. * WHERE...Coos Bay and estuaries. * WHEN...From 8 AM Friday to 1 PM PST Saturday. * IMPACTS...Low lying roadways may be closed and low lying property and some critical infrastructure may be inundated. * ADDITIONAL DETAILS...The highest risk of coastal flooding will be associated with the high tides Friday morning and early Friday afternoon and again Saturday morning into early Saturday afternoon. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Thursday, January 1, 2026

Weather Forecast

Moderate rain
44.8°F
38.1°F
42.1°F
87%
0.46 in
88%
0%
2.5 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 15.41 μg/m3
PM10: 16.05 μg/m3
Carbon Monoxide: 347.21 μg/m3
Nitrogen Dioxide: 23.95 μg/m3
Sulphur Dioxide: 3.16 μg/m3
Ozone: 8.08 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:15 AM
Sunset: 4:46 PM
Daylight: 9 hrs mins
Moonrise: 2:43 PM
Moon Transit: 11:07 PM
Moonset: 6:22 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.0%

Best Times for Fishing or Hunting

Major Periods

5:27 AM - 7:57 AM
12:00 AM - 12:00 AM

Minor Periods

2:13 PM - 3:43 PM
5:52 AM - 7:22 AM

Action Rating: 4 out of 5

Friday, January 2, 2026

Weather Forecast

Patchy rain nearby
56.7°F
45.5°F
50.7°F
84%
0.07 in
89%
0%
3.8 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 9.12 μg/m3
PM10: 9.39 μg/m3
Carbon Monoxide: 254.37 μg/m3
Nitrogen Dioxide: 13.62 μg/m3
Sulphur Dioxide: 1.71 μg/m3
Ozone: 21.12 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:16 AM
Sunset: 4:47 PM
Daylight: 9 hrs 1 mins
Moonrise: 3:51 PM
Moon Transit: 12:00 AM
Moonset: 7:32 AM
Moon Phase: Full
Moon Illumination: 99.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:34 AM - 9:04 AM

Minor Periods

3:21 PM - 4:51 PM
7:02 AM - 8:32 AM

Action Rating: 4 out of 5

Saturday, January 3, 2026

Weather Forecast

Moderate rain
54.7°F
46°F
49.8°F
75%
0.65 in
87%
0%
11.4 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 3.19 μg/m3
PM10: 3.32 μg/m3
Carbon Monoxide: 175.53 μg/m3
Nitrogen Dioxide: 8.77 μg/m3
Sulphur Dioxide: 1.4 μg/m3
Ozone: 51.84 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:16 AM
Sunset: 4:48 PM
Daylight: 9 hrs 2 mins
Moonrise: 5:10 PM
Moon Transit: 12:13 AM
Moonset: 8:28 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:39 AM - 10:09 AM

Minor Periods

4:40 PM - 6:10 PM
7:58 AM - 9:28 AM

Action Rating: 6 out of 5

Sunday, January 4, 2026

Weather Forecast

Moderate rain
46.9°F
41.4°F
44.9°F
93%
0.53 in
86%
0%
15.7 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 1.85 μg/m3
PM10: 2.28 μg/m3
Carbon Monoxide: 138.79 μg/m3
Nitrogen Dioxide: 2.65 μg/m3
Sulphur Dioxide: 1.13 μg/m3
Ozone: 77.72 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:17 AM
Sunset: 4:49 PM
Daylight: 9 hrs 3 mins
Moonrise: 6:32 PM
Moon Transit: 1:16 AM
Moonset: 9:09 AM
Moon Phase: Full
Moon Illumination: 98.1%

Best Times for Fishing or Hunting

Major Periods

12:46 AM - 3:16 AM
8:40 AM - 11:10 AM

Minor Periods

6:02 PM - 7:32 PM
8:39 AM - 10:09 AM

Action Rating: 3 out of 5

Monday, January 5, 2026

Weather Forecast

Moderate rain
46.2°F
39.6°F
42.2°F
96%
0.32 in
89%
0%
4 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.6 μg/m3
PM10: 3.29 μg/m3
Carbon Monoxide: 150.67 μg/m3
Nitrogen Dioxide: 2.92 μg/m3
Sulphur Dioxide: 1.21 μg/m3
Ozone: 73 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:17 AM
Sunset: 4:50 PM
Daylight: 9 hrs 4 mins
Moonrise: 7:50 PM
Moon Transit: 2:13 AM
Moonset: 9:40 AM
Moon Phase: Full
Moon Illumination: 93.7%

Best Times for Fishing or Hunting

Major Periods

1:43 AM - 4:13 AM
9:36 AM - 12:06 AM

Minor Periods

7:20 PM - 8:50 PM
9:10 AM - 10:40 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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