Water Temperature of the Middle Santiam River in Foster, OR

Current Water Temperature

44.4°F

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 Park

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Middle Santiam River

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

74.7°F
Sunny
Conditions: Sunny
Humidity: 65%
Feels Like: 77.7°F
Wind: NNW 8.1 mph
Wind Gusts: 9.3 mph
Pressure: 30.12 in
Precipitation: 0 in
Cloud Cover: 14%
Visibility: 6 mi
UV Index: 1.7

Five Day Weather Forecast

Cloudy
Thu
H: 77°F
L: 62°F
Sunny
Fri
H: 80°F
L: 51°F
Sunny
Sat
H: 83°F
L: 52°F
Sunny
Sun
H: 87°F
L: 55°F
Sunny
Mon
H: 84°F
L: 45°F

Air Quality

AQI: 1 - Good
PM2.5: 6.85 μg/m3
PM10: 7.59 μg/m3
Carbon Monoxide: 340.4 μg/m3
Nitrogen Dioxide: 20.17 μg/m3
Sulphur Dioxide: 0.74 μg/m3
Ozone: 48 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 1:15 PM
Sunset: 8:55 PM
Daylight: 15 hrs 19 mins
Moonrise: 9:29 PM
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 AM
8:17 AM - 10:47 AM

Minor Periods

8:59 PM - 10:29 PM
4:27 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.


Thursday, July 10, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 68.1°F
Average Humidity: 79%
Chance of Rain: 0%
Wind: 8.1 mph
UV Index: 2.3

Air Quality

AQI: 1 - Good
PM2.5: 4.35 μg/m3
PM10: 4.92 μg/m3
Carbon Monoxide: 220.89 μg/m3
Nitrogen Dioxide: 6.69 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 44.84 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 1:15 PM
Sunset: 8:55 PM
Daylight: 15 hrs 19 mins
Moonrise: 9:29 PM
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 AM
8:17 AM - 10:47 AM

Minor Periods

8:59 PM - 10:29 PM
4:27 AM - 5:57 AM

Action Rating: 5 out of 5

Friday, July 11, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 66.1°F
Average Humidity: 76%
Chance of Rain: 0%
Wind: 9.2 mph
UV Index: 2.5

Air Quality

AQI: 1 - Good
PM2.5: 7.33 μg/m3
PM10: 7.98 μg/m3
Carbon Monoxide: 279.13 μg/m3
Nitrogen Dioxide: 9.5 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 71.44 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 1:15 PM
Sunset: 8:55 PM
Daylight: 15 hrs 18 mins
Moonrise: 10:02 PM
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 AM
9:11 AM - 11:41 AM

Minor Periods

9:32 PM - 11:02 PM
5:36 AM - 7:06 AM

Action Rating: 4 out of 5

Saturday, July 12, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 69.7°F
Average Humidity: 67%
Chance of Rain: 0%
Wind: 7.6 mph
UV Index: 2.6

Air Quality

AQI: 1 - Good
PM2.5: 9.95 μg/m3
PM10: 10.2 μg/m3
Carbon Monoxide: 297.55 μg/m3
Nitrogen Dioxide: 7.91 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 86.76 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 1:15 PM
Sunset: 8:54 PM
Daylight: 15 hrs 17 mins
Moonrise: 10:29 PM
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 AM
10:02 AM - 12:32 AM

Minor Periods

9:59 PM - 11:29 PM
6:50 AM - 8:20 AM

Action Rating: 3 out of 5

Sunday, July 13, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 72.3°F
Average Humidity: 65%
Chance of Rain: 0%
Wind: 9.6 mph
UV Index: 2.8

Air Quality

AQI: 1 - Good
PM2.5: 6.92 μg/m3
PM10: 7.45 μg/m3
Carbon Monoxide: 286.16 μg/m3
Nitrogen Dioxide: 10.4 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 75.92 μg/m3

Astronomical

Sunrise: 5:38 AM
Sun Transit: 1:16 PM
Sunset: 8:53 PM
Daylight: 15 hrs 15 mins
Moonrise: 10:52 PM
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 AM
10:51 AM - 1:21 PM

Minor Periods

10:22 PM - 11:52 PM
8:05 AM - 9:35 AM

Action Rating: 3 out of 5

Monday, July 14, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 65.1°F
Average Humidity: 58%
Chance of Rain: 0%
Wind: 6.5 mph
UV Index: 2.7

Air Quality

AQI: 1 - Good
PM2.5: 3.98 μg/m3
PM10: 4.2 μg/m3
Carbon Monoxide: 241.5 μg/m3
Nitrogen Dioxide: 11.17 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 55.38 μg/m3

Astronomical

Sunrise: 5:39 AM
Sun Transit: 1:16 PM
Sunset: 8:53 PM
Daylight: 15 hrs 14 mins
Moonrise: 11:11 PM
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 AM
11:38 AM - 2:08 PM

Minor Periods

12:00 AM - 12:00 AM
9:19 AM - 10:49 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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