Water Temperature of the Coast Fork Willamette River in Cottage Grove, OR
Current Water Temperature
Measurement Time: Monday, July 20, 2026, 5:50 PM PDT
Temperature Locations
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Local Points of Interest
Cottage Grove Lake; Cottage Grove DamStation 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

Five Day Weather Forecast

Tue
H: 96°F
L: 67°F

Wed
H: 97°F
L: 60°F

Thu
H: 84°F
L: 53°F

Fri
H: 86°F
L: 50°F

Sat
H: 80°F
L: 49°F
Air Quality
Nitrogen Dioxide: 4.6 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 58 μg/m3
Astronomical
Sun Transit: 1:18 PM
Sunset: 8:47 PM
Daylight: 14 hrs 57 mins
Moon Transit: 7:22 PM
Moonset: 12:51 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%
Best Times for Fishing or Hunting
Major Periods
1:58 AM - 4:28 AM6:52 PM - 9:22 PM
Minor Periods
1:54 PM - 3:24 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Fire Weather Watch issued July 20 at 12:40PM PDT until July 22 at 11:00PM PDT by NWS Medford OR
Effective: Mon July 20, 2026, 12:40 PM
Expires: Tue July 21, 2026, 5:15 AM
The National Weather Service in Medford has issued a Fire Weather Watch, which is in effect from Wednesday morning through Wednesday evening. * IMPACTS...Abundant lightning on dry fuels will likely create new ignitions across the region. Any fires that develop could spread rapidly. Numerous new fire starts could overwhelm initial attack. * AFFECTED AREA...Areas in southern Oregon along and east of the Cascades, along the western foothills and slopes of the Cascades, and over the Siskiyous, including Fire Weather Zones 617...621...622...623...624 and 625. * THUNDERSTORMS...Moving roughly north to northeast around 15 to 20 mph. Storm mode will be mostly wet thunderstorms, but dry lightning strikes can occur outside of wet cores. * OUTFLOW WINDS...Isolated gusts up to 45 mph. * DETAILED URL...View the hazard area in detail at https://weather.gov/wrh/hazards?wfo=mfr
Follow all fire restrictions. Avoid activities that could cause sparks. Visit weather.gov/medford/wildfire for links to fire restrictions in your area. If you have not packet your go kit yet, now is the time to do so. This includes items like important documents and essentials you cannot live without. Fill your vehicle's fuel tank. Visit ready.gov/kit for more information. A Fire Weather Watch means that critical fire weather conditions are possible during the valid watch time. These conditions could promote the rapid spread of wildfires which could become life- threatening. Check weather.gov/medford for forecast updates and a possible upgrade of the this watch to a Red Flag Warning.
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.4 μg/m3
Sulphur Dioxide: 0.83 μg/m3
Ozone: 83.21 μg/m3
Astronomical
Sun Transit: 1:18 PM
Sunset: 8:47 PM
Daylight: 14 hrs 57 mins
Moon Transit: 7:22 PM
Moonset: 12:51 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%
Best Times for Fishing or Hunting
Major Periods
1:58 AM - 4:28 AM6:52 PM - 9:22 PM
Minor Periods
1:54 PM - 3:24 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.98 μg/m3
Sulphur Dioxide: 0.92 μg/m3
Ozone: 83.83 μg/m3
Astronomical
Sun Transit: 1:18 PM
Sunset: 8:46 PM
Daylight: 14 hrs 55 mins
Moon Transit: 8:08 PM
Moonset: 12:14 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%
Best Times for Fishing or Hunting
Major Periods
2:42 AM - 5:12 AM7:38 PM - 10:08 PM
Minor Periods
3:00 PM - 4:30 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.28 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 50.33 μg/m3
Astronomical
Sun Transit: 1:18 PM
Sunset: 8:45 PM
Daylight: 14 hrs 53 mins
Moon Transit: 8:56 PM
Moonset: 12:41 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%
Best Times for Fishing or Hunting
Major Periods
3:30 AM - 6:00 AM8:26 PM - 10:56 PM
Minor Periods
4:06 PM - 5:36 PM12:11 AM - 1:41 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.62 μg/m3
Sulphur Dioxide: 0.75 μg/m3
Ozone: 46 μg/m3
Astronomical
Sun Transit: 1:18 PM
Sunset: 8:44 PM
Daylight: 14 hrs 51 mins
Moon Transit: 9:46 PM
Moonset: 1:13 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%
Best Times for Fishing or Hunting
Major Periods
4:18 AM - 6:48 AM9:16 PM - 11:46 PM
Minor Periods
5:07 PM - 6:37 PM12:43 AM - 2:13 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 3.3 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 48.5 μg/m3
Astronomical
Sun Transit: 1:18 PM
Sunset: 8:43 PM
Daylight: 14 hrs 49 mins
Moon Transit: 10:38 PM
Moonset: 1:54 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%
Best Times for Fishing or Hunting
Major Periods
5:08 AM - 7:38 AM12:00 AM - 12:00 AM
Minor Periods
6:04 PM - 7:34 PM1:24 AM - 2:54 AM
Action Rating: 2 out of 5
