Water Temperature of the Middle Santiam River in Foster, OR
Current Water Temperature
Measurement Time: Thursday, July 10, 2025, 11:50 AM PDT
Temperature Locations
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Local Points of Interest
Green Peter Reservoir; Green Peter Dam; Billings ParkSponsored Content
Station Name: MIDDLE SANTIAM R BLW GREEN PETER DAM NR FOSTER, OR
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 745 feet / 227 meters
Nearest Address:
Quartzville Dr
Foster, OR 97345
Linn County
GPS Coordinates: 44.44818005, -122.5503613
Nearby Water Temperatures
South Santiam River, Cascadia, OR (4.7 mi)South Santiam River, Sweet Home, OR (7.3 mi)
Quartzville Creek, Cascadia, OR (8.5 mi)
Middle Santiam River, Cascadia, OR (9.9 mi)
South Santiam River, Waterloo, OR (13.9 mi)
Blue River, Blue River, OR (21.3 mi)
Lookout Creek, Blue River, OR (22.0 mi)
Blue River Lake, Blue River, OR (22.0 mi)
McKenzie River, Vida, OR (22.7 mi)
North Santiam River, Mehama, OR (23.6 mi)
Little North Santiam River, Lyons, OR (23.8 mi)
Detroit Lake, Detroit, OR (23.9 mi)
North Santiam River, Niagara, OR (24.5 mi)
Blowout Creek, Detroit, OR (25.0 mi)
Smith River, Belknap Springs, OR (26.1 mi)
Weather for Foster, Oregon
Current Weather

Humidity: 65%
Feels Like: 77.7°F
Wind: NNW 8.1 mph
Wind Gusts: 9.3 mph
Precipitation: 0 in
Cloud Cover: 14%
Visibility: 6 mi
UV Index: 1.7
Five Day Weather Forecast

Thu
H: 77°F
L: 62°F

Fri
H: 80°F
L: 51°F

Sat
H: 83°F
L: 52°F

Sun
H: 87°F
L: 55°F

Mon
H: 84°F
L: 45°F
Air Quality
Nitrogen Dioxide: 20.17 μg/m3
Sulphur Dioxide: 0.74 μg/m3
Ozone: 48 μg/m3
Astronomical
Sun Transit: 1:15 PM
Sunset: 8:55 PM
Daylight: 15 hrs 19 mins
Moon Transit: 12:50 AM
Moonset: 4:57 AM
Moon Phase: Full
Moon Illumination: 99.8%
Best Times for Fishing or Hunting
Major Periods
12:20 AM - 2:50 AM8:17 AM - 10:47 AM
Minor Periods
8:59 PM - 10:29 PM4:27 AM - 5:57 AM
Action Rating: 5 out of 5
Extreme Heat Watch issued July 10 at 1:28PM PDT until July 17 at 12:00AM PDT by NWS Portland OR
Effective: Thu July 10, 2025, 1:28 PM
Expires: Fri July 11, 2025, 6:00 AM
* WHAT...Dangerously hot conditions with temperatures between 95 and 105 degrees possible. Low temperatures between 65 to 70 degrees are possible, which would limit overnight relief. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Lower Columbia River and Cowlitz River Valleys, and Central Willamette Valley. * WHEN...From Tuesday afternoon through Wednesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...There is a 40-50% chance that Tuesday night low temperatures remain above 70 degrees. There is also a 20-40% chance that Tuesday and Wednesday high temperatures exceed 105 degrees across the Willamette Valley.
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. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Monitor the latest forecasts and warnings for updates.
Extreme Heat Watch issued July 10 at 1:28PM PDT until July 17 at 12:00AM PDT by NWS Portland OR
Effective: Thu July 10, 2025, 1:28 PM
Expires: Fri July 11, 2025, 6:00 AM
* WHAT...Dangerously hot conditions with temperatures between 95 and 105 degrees possible. Low temperatures between 65 to 70 degrees are possible, which would limit overnight relief. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Lower Columbia River and Cowlitz River Valleys, and Central Willamette Valley. * WHEN...From Tuesday afternoon through Wednesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...There is a 40-50% chance that Tuesday night low temperatures remain above 70 degrees. There is also a 20-40% chance that Tuesday and Wednesday high temperatures exceed 105 degrees across the Willamette Valley.
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. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Monitor the latest forecasts and warnings for updates.
Extreme Heat Watch issued July 10 at 1:28PM PDT until July 17 at 12:00AM PDT by NWS Portland OR
Effective: Thu July 10, 2025, 1:28 PM
Expires: Fri July 11, 2025, 6:00 AM
* WHAT...Dangerously hot conditions with temperatures between 95 and 105 degrees possible. Low temperatures between 65 to 70 degrees are possible, which would limit overnight relief. * WHERE...Greater Portland/Vancouver Metro, Western and Central Columbia River Gorge, the Corbett area and the Hood River Valley, Lower Columbia River and Cowlitz River Valleys, and Central Willamette Valley. * WHEN...From Tuesday afternoon through Wednesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...There is a 40-50% chance that Tuesday night low temperatures remain above 70 degrees. There is also a 20-40% chance that Tuesday and Wednesday high temperatures exceed 105 degrees across the Willamette Valley.
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. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Monitor the latest forecasts and warnings for updates.
Weather Forecast
Average Temperature: 68.1°F
Average Humidity: 79%
Wind: 8.1 mph
UV Index: 2.3
Air Quality
Nitrogen Dioxide: 6.69 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 44.84 μg/m3
Astronomical
Sun Transit: 1:15 PM
Sunset: 8:55 PM
Daylight: 15 hrs 19 mins
Moon Transit: 12:50 AM
Moonset: 4:57 AM
Moon Phase: Full
Moon Illumination: 99.8%
Best Times for Fishing or Hunting
Major Periods
12:20 AM - 2:50 AM8:17 AM - 10:47 AM
Minor Periods
8:59 PM - 10:29 PM4:27 AM - 5:57 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: 66.1°F
Average Humidity: 76%
Wind: 9.2 mph
UV Index: 2.5
Air Quality
Nitrogen Dioxide: 9.5 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 71.44 μg/m3
Astronomical
Sun Transit: 1:15 PM
Sunset: 8:55 PM
Daylight: 15 hrs 18 mins
Moon Transit: 1:44 AM
Moonset: 6:06 AM
Moon Phase: Full
Moon Illumination: 97.4%
Best Times for Fishing or Hunting
Major Periods
1:14 AM - 3:44 AM9:11 AM - 11:41 AM
Minor Periods
9:32 PM - 11:02 PM5:36 AM - 7:06 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 69.7°F
Average Humidity: 67%
Wind: 7.6 mph
UV Index: 2.6
Air Quality
Nitrogen Dioxide: 7.91 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 86.76 μg/m3
Astronomical
Sun Transit: 1:15 PM
Sunset: 8:54 PM
Daylight: 15 hrs 17 mins
Moon Transit: 2:36 AM
Moonset: 7:20 AM
Moon Phase: Full
Moon Illumination: 92.7%
Best Times for Fishing or Hunting
Major Periods
2:06 AM - 4:36 AM10:02 AM - 12:32 AM
Minor Periods
9:59 PM - 11:29 PM6:50 AM - 8:20 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 72.3°F
Average Humidity: 65%
Wind: 9.6 mph
UV Index: 2.8
Air Quality
Nitrogen Dioxide: 10.4 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 75.92 μg/m3
Astronomical
Sun Transit: 1:16 PM
Sunset: 8:53 PM
Daylight: 15 hrs 15 mins
Moon Transit: 3:26 AM
Moonset: 8:35 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.7%
Best Times for Fishing or Hunting
Major Periods
2:56 AM - 5:26 AM10:51 AM - 1:21 PM
Minor Periods
10:22 PM - 11:52 PM8:05 AM - 9:35 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 65.1°F
Average Humidity: 58%
Wind: 6.5 mph
UV Index: 2.7
Air Quality
Nitrogen Dioxide: 11.17 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 55.38 μg/m3
Astronomical
Sun Transit: 1:16 PM
Sunset: 8:53 PM
Daylight: 15 hrs 14 mins
Moon Transit: 4:14 AM
Moonset: 9:49 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.9%
Best Times for Fishing or Hunting
Major Periods
3:44 AM - 6:14 AM11:38 AM - 2:08 PM
Minor Periods
12:00 AM - 12:00 AM9:19 AM - 10:49 AM
Action Rating: 2 out of 5