Water Temperature of the Middle Santiam River in Foster, OR

Current Water Temperature

46.8°F

Measurement Time: Sunday, December 28, 2025, 12:45 AM PST

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

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)
North Fork Quartz Creek, Blue River, OR (21.6 mi)
Lookout Creek, Blue River, OR (22 mi)
Blue River Lake, Blue River, OR (22 mi)
Blue River, Blue River, OR (22.5 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)

Weather for Foster, Oregon

Current Weather

30.3°F
Partly sunny
Conditions: Partly sunny
Humidity: 91%
Heat Index: 30.3°F
Feels Like: 24.6°F
Wind: E 3.1 mph
Wind Gusts: 12 mph
Wind Chill: 24.6°F
Air Pressure: 1033.24 millibars
Dew Point: 24.6°F
Chance of Precipitation: 0%
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 8 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Sun
H: 47°F
L: 25°F
Sunny
Mon
H: 56°F
L: 32°F
Sunny
Tue
H: 58°F
L: 31°F
Sunny
Wed
H: 58°F
L: 31°F
Patchy rain nearby
Thu
H: 49°F
L: 32°F

Air Quality

AQI: 1 - Good
PM2.5: 2.25 μg/m3
PM10: 2.65 μg/m3
Carbon Monoxide: 169.85 μg/m3
Nitrogen Dioxide: 3.85 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 86 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:12 AM
Sunset: 4:38 PM
Daylight: 8 hrs 52 mins
Moonrise: 12:08 AM
Moon Transit: 7:05 PM
Moonset: 1:01 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

1:41 AM - 4:11 AM
6:35 PM - 9:05 PM

Minor Periods

11:38 AM - 1:08 PM
12:31 AM - 2:01 AM

Action Rating: 2 out of 5

Dense Fog Advisory issued December 28 at 3:11AM PST until December 28 at 10:00AM PST by NWS Portland OR

Effective: Sun December 28, 2025, 3:11 AM
Expires: Sun December 28, 2025, 10:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Greater Portland/Vancouver Metro, Central and Southern Willamette Valley, and Lower Columbia River and Cowlitz River Valleys. * WHEN...Until 10 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you. If driving, slow down and leave plenty of distance ahead of you. Pedestrians and cyclists should wear bright or reflective clothing to increase the chances of being seen by others in poor visibility conditions.
Sunday, December 28, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 38.7°F
Average Humidity: 70%
Chance of Rain: 0%
Wind: 4.5 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 2.91 μg/m3
PM10: 3.71 μg/m3
Carbon Monoxide: 161.17 μg/m3
Nitrogen Dioxide: 4.19 μg/m3
Sulphur Dioxide: 1.22 μg/m3
Ozone: 77.4 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:12 AM
Sunset: 4:38 PM
Daylight: 8 hrs 52 mins
Moonrise: 12:08 AM
Moon Transit: 7:05 PM
Moonset: 1:01 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

1:41 AM - 4:11 AM
6:35 PM - 9:05 PM

Minor Periods

11:38 AM - 1:08 PM
12:31 AM - 2:01 AM

Action Rating: 2 out of 5

Monday, December 29, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 39.7°F
Average Humidity: 55%
Chance of Rain: 0%
Wind: 4.9 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 3.37 μg/m3
PM10: 3.7 μg/m3
Carbon Monoxide: 192.57 μg/m3
Nitrogen Dioxide: 5.69 μg/m3
Sulphur Dioxide: 1.35 μg/m3
Ozone: 68.68 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:12 AM
Sunset: 4:39 PM
Daylight: 8 hrs 53 mins
Moonrise: 12:33 AM
Moon Transit: 7:57 PM
Moonset: 2:19 AM
Moon Phase: First Quarter
Moon Illumination: 73.5%

Best Times for Fishing or Hunting

Major Periods

2:31 AM - 5:01 AM
7:27 PM - 9:57 PM

Minor Periods

12:03 AM - 1:33 PM
1:49 AM - 3:19 AM

Action Rating: 2 out of 5

Tuesday, December 30, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 40.4°F
Average Humidity: 62%
Chance of Rain: 0%
Wind: 5.1 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 4.57 μg/m3
PM10: 4.83 μg/m3
Carbon Monoxide: 198.37 μg/m3
Nitrogen Dioxide: 6.75 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 54.2 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:13 AM
Sunset: 4:40 PM
Daylight: 8 hrs 54 mins
Moonrise: 1:03 PM
Moon Transit: 8:55 PM
Moonset: 3:40 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.8%

Best Times for Fishing or Hunting

Major Periods

3:25 AM - 5:55 AM
8:25 PM - 10:55 PM

Minor Periods

12:33 AM - 2:03 PM
3:10 AM - 4:40 AM

Action Rating: 2 out of 5

Wednesday, December 31, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 38.9°F
Average Humidity: 82%
Chance of Rain: 0%
Wind: 5.6 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 3.69 μg/m3
PM10: 4.04 μg/m3
Carbon Monoxide: 191.44 μg/m3
Nitrogen Dioxide: 6.55 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 50.32 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:13 AM
Sunset: 4:41 PM
Daylight: 8 hrs 54 mins
Moonrise: 1:43 PM
Moon Transit: 9:58 PM
Moonset: 5:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.5%

Best Times for Fishing or Hunting

Major Periods

4:24 AM - 6:54 AM
9:28 PM - 11:58 PM

Minor Periods

1:13 PM - 2:43 PM
4:33 AM - 6:03 AM

Action Rating: 2 out of 5

Thursday, January 1, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 38.6°F
Average Humidity: 87%
Chance of Rain: 84%
Wind: 5.1 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 3.34 μg/m3
PM10: 3.78 μg/m3
Carbon Monoxide: 183.45 μg/m3
Nitrogen Dioxide: 5.47 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 59 μg/m3

Astronomical

Sunrise: 7:46 AM
Sun Transit: 12:13 AM
Sunset: 4:42 PM
Daylight: 8 hrs 55 mins
Moonrise: 2:37 PM
Moon Transit: 11:05 PM
Moonset: 6:24 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.0%

Best Times for Fishing or Hunting

Major Periods

5:30 AM - 8:00 AM
12:00 AM - 12:00 AM

Minor Periods

2:07 PM - 3:37 PM
5:54 AM - 7:24 AM

Action Rating: 4 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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