Water Temperature of the Coast Fork Willamette River in Cottage Grove, OR
Current Water Temperature
Measurement Time: Tuesday, July 15, 2025, 8:10 PM PDT
Temperature Locations
View Nearby Locations View All Oregon Locations View Locations Near Me
Local Points of Interest
Cottage Grove Lake; Cottage Grove DamSponsored Content
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

Humidity: 75%
Feels Like: 62.1°F
Wind: SE 2.2 mph
Wind Gusts: 4.7 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast

Wed
H: 95°F
L: 58°F

Thu
H: 83°F
L: 59°F

Fri
H: 84°F
L: 55°F

Sat
H: 82°F
L: 49°F

Sun
H: 77°F
L: 51°F
Air Quality
Nitrogen Dioxide: 6.66 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 91 μg/m3
Astronomical
Sun Transit: 1:18 PM
Sunset: 8:51 PM
Daylight: 15 hrs 5 mins
Moon Transit: 12:00 AM
Moonset: 12:20 AM
Moon Phase: Waning Gibbous
Moon Illumination: 55.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:00 AM - 12:00 AM
Minor Periods
11:50 AM - 1:20 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Heat Advisory issued July 15 at 1:40PM PDT until July 16 at 10:00PM PDT by NWS Portland OR
Effective: Tue July 15, 2025, 1:40 PM
Expires: Wed July 16, 2025, 5:00 AM
* WHAT...Temperatures up to 92 to 100 expected. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Central and Southern Willamette Valley, and Lower Columbia River and Cowlitz River Valleys. * WHEN...Until 10 PM PDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...The hottest day will be Wednesday, with a 30-60% chance of temperatures reaching 100 degrees Fahrenheit.
Drink plenty of fluids, stay in a cool place during the heat of the day, stay out of the sunshine, and check up on relatives and neighbors. For those without air conditioning, use fans to keep air moving. Keeps windows closed during the day and open at night, unless air quality is degraded due to wildfire smoke. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Heat Advisory issued July 15 at 1:40PM PDT until July 16 at 10:00PM PDT by NWS Portland OR
Effective: Tue July 15, 2025, 1:40 PM
Expires: Wed July 16, 2025, 5:00 AM
* WHAT...Temperatures up to 92 to 100 expected. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Central and Southern Willamette Valley, and Lower Columbia River and Cowlitz River Valleys. * WHEN...Until 10 PM PDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...The hottest day will be Wednesday, with a 30-60% chance of temperatures reaching 100 degrees Fahrenheit.
Drink plenty of fluids, stay in a cool place during the heat of the day, stay out of the sunshine, and check up on relatives and neighbors. For those without air conditioning, use fans to keep air moving. Keeps windows closed during the day and open at night, unless air quality is degraded due to wildfire smoke. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Heat Advisory issued July 15 at 12:48PM PDT until July 16 at 8:00PM PDT by NWS Medford OR
Effective: Tue July 15, 2025, 12:48 PM
Expires: Wed July 16, 2025, 5:00 AM
* WHAT...High temperatures in the 90s to around 100 are expected. Low temperatures will be mainly in the upper 50s to mid 60s. * WHERE...Central Douglas County and Eastern Douglas County Foothills, including the Umpqua Basin. This includes Roseburg, Camas Valley, Elkton and Tiller. * WHEN...Until 8 PM PDT Wednesday. * IMPACTS...An increased chance of heat related illness for those without access to cooling facilities. * ADDITIONAL DETAILS...Warm overnight temperatures will limit relief from hot daytime temperatures.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Heat Advisory issued July 15 at 12:48PM PDT until July 16 at 8:00PM PDT by NWS Medford OR
Effective: Tue July 15, 2025, 12:48 PM
Expires: Wed July 16, 2025, 5:00 AM
* WHAT...High temperatures in the 90s to around 100 are expected. Low temperatures will be mainly in the upper 50s to mid 60s. * WHERE...Central Douglas County and Eastern Douglas County Foothills, including the Umpqua Basin. This includes Roseburg, Camas Valley, Elkton and Tiller. * WHEN...Until 8 PM PDT Wednesday. * IMPACTS...An increased chance of heat related illness for those without access to cooling facilities. * ADDITIONAL DETAILS...Warm overnight temperatures will limit relief from hot daytime temperatures.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Weather Forecast
Average Temperature: 78.1°F
Average Humidity: 49%
Wind: 8.7 mph
UV Index: 2.4
Air Quality
Nitrogen Dioxide: 8.28 μg/m3
Sulphur Dioxide: 1.01 μg/m3
Ozone: 89.04 μg/m3
Astronomical
Sun Transit: 1:18 PM
Sunset: 8:51 PM
Daylight: 15 hrs 5 mins
Moon Transit: 12:00 AM
Moonset: 12:20 AM
Moon Phase: Waning Gibbous
Moon Illumination: 55.7%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:00 AM - 12:00 AM
Minor Periods
11:50 AM - 1:20 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 68.8°F
Average Humidity: 70%
Wind: 8.7 mph
UV Index: 2.6
Air Quality
Nitrogen Dioxide: 5.02 μg/m3
Sulphur Dioxide: 0.81 μg/m3
Ozone: 70.32 μg/m3
Astronomical
Sun Transit: 1:18 PM
Sunset: 8:50 PM
Daylight: 15 hrs 4 mins
Moon Transit: 6:36 AM
Moonset: 1:35 PM
Moon Phase: Last Quarter
Moon Illumination: 44.4%
Best Times for Fishing or Hunting
Major Periods
6:06 AM - 8:36 AM1:57 PM - 4:27 PM
Minor Periods
1:05 PM - 2:35 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 67.7°F
Average Humidity: 70%
Wind: 9.4 mph
UV Index: 2.6
Air Quality
Nitrogen Dioxide: 4.39 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 61.52 μg/m3
Astronomical
Sun Transit: 1:18 PM
Sunset: 8:49 PM
Daylight: 15 hrs 2 mins
Moon Transit: 7:26 AM
Moonset: 2:54 PM
Moon Phase: Last Quarter
Moon Illumination: 33.4%
Best Times for Fishing or Hunting
Major Periods
6:56 AM - 9:26 AM2:49 PM - 5:19 PM
Minor Periods
2:24 PM - 3:54 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 64°F
Average Humidity: 65%
Wind: 9.6 mph
UV Index: 2.6
Air Quality
Nitrogen Dioxide: 4.57 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 55.38 μg/m3
Astronomical
Sun Transit: 1:18 PM
Sunset: 8:48 PM
Daylight: 15 hrs mins
Moon Transit: 8:20 AM
Moonset: 4:14 PM
Moon Phase: Last Quarter
Moon Illumination: 23.2%
Best Times for Fishing or Hunting
Major Periods
7:50 AM - 10:20 AM3:44 PM - 6:14 PM
Minor Periods
3:44 PM - 5:14 PM12:13 AM - 1:43 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 59.9°F
Average Humidity: 82%
Wind: 6.3 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 1:18 PM
Sunset: 8:48 PM
Daylight: 14 hrs 58 mins
Moon Transit: 9:19 AM
Moonset: 5:33 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.4%
Best Times for Fishing or Hunting
Major Periods
8:49 AM - 11:19 AM4:44 PM - 7:14 PM
Minor Periods
5:03 PM - 6:33 PM12:47 AM - 2:17 AM
Action Rating: 2 out of 5