Water Temperature of the Middle Santiam River in Foster, OR

Current Water Temperature

45.1°F

Measurement Time: Friday, June 12, 2026, 1:15 PM PDT

Temperature Locations

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Local Points of Interest

Green Peter Reservoir; Green Peter Dam; Billings Park

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

68.5°F
Sunny
Sunny
59.5°F
68.8°F
55%
NW 3.1 mph
6.6 mph
68.5°F
52.2°F
0 in
0%
6 mi
1018 mbar
0.2

Five Day Weather Forecast

Sunny
Fri
H: 77°F
L: 51°F
Sunny
Sat
H: 88°F
L: 55°F
Sunny
Sun
H: 92°F
L: 52°F
Sunny
Mon
H: 90°F
L: 55°F
Sunny
Tue
H: 82°F
L: 49°F

Air Quality

AQI: 1 - Good
PM2.5: 3.4 μg/m3
PM10: 4.4 μg/m3
Carbon Monoxide: 114 μg/m3
Nitrogen Dioxide: 1.3 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 87 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 1:10 PM
Sunset: 8:55 PM
Daylight: 15 hrs 31 mins
Moonrise: 3:00 AM
Moon Transit: 10:41 AM
Moonset: 6:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

6:10 PM - 8:40 PM
10:11 AM - 12:41 AM

Minor Periods

6:10 PM - 7:40 PM
2:30 AM - 4:00 AM

Action Rating: 3 out of 5

Heat Advisory issued June 12 at 10:36AM PDT until June 16 at 11:00PM PDT by NWS Portland OR

Effective: Fri June 12, 2026, 10:36 AM
Expires: Sat June 13, 2026, 5:00 AM

* WHAT...Temperatures of 90 to 96 degrees F expected. * WHERE...Central and Southern Willamette Valley, Northern and Central Coast Range Valleys and Mountains of Oregon, Foothills of the Northern and Central Oregon Cascades, Central Columbia River Gorge and the Hood River Valley, Willapa Hills and Adjacent River Valleys of Pacific and Wahkiakum Counties, Lower Columbia River and Cowlitz River Valleys, Outer Southeast Portland Metro, West Columbia River Gorge of Oregon above 500 ft, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...From 11 AM Sunday to 11 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Peak heating days will be Sunday and Monday with a slight cool down on Tuesday. Overnight temperatures will remain elevated Sunday night into Monday morning, and Monday night into Tuesday morning. Night time temperatures ranging from 60 to 65 degrees F will lead to limited overnight relief.

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. For sheltering information and other human services, dial 2 1 1 during business hours or visit 211info.org in Oregon or wa211.org in Washington.


Heat Advisory issued June 12 at 10:36AM PDT until June 14 at 11:00PM PDT by NWS Portland OR

Effective: Fri June 12, 2026, 10:36 AM
Expires: Sat June 13, 2026, 5:00 AM

* WHAT...Temperatures 83 to 87 degrees F expected. * WHERE...South Washington and North and Central Oregon Coast. * WHEN...From 11 AM to 11 PM PDT Sunday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Easterly winds will bring in warmer air to the coast on Sunday causing temperatures to rise. Moderate HeatRisk expected.

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. 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.


Friday, June 12, 2026

Weather Forecast

Sunny
77.2°F
50.5°F
64°F
58%
0 in
3%
0%
7.4 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 2.67 μg/m3
PM10: 3.43 μg/m3
Carbon Monoxide: 111.88 μg/m3
Nitrogen Dioxide: 3.91 μg/m3
Sulphur Dioxide: 0.38 μg/m3
Ozone: 71.38 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 1:10 PM
Sunset: 8:55 PM
Daylight: 15 hrs 31 mins
Moonrise: 3:00 AM
Moon Transit: 10:41 AM
Moonset: 6:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

6:10 PM - 8:40 PM
10:11 AM - 12:41 AM

Minor Periods

6:10 PM - 7:40 PM
2:30 AM - 4:00 AM

Action Rating: 3 out of 5

Saturday, June 13, 2026

Weather Forecast

Sunny
88.3°F
54.5°F
70.4°F
38%
0 in
1%
0%
7.4 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 3.63 μg/m3
PM10: 4.53 μg/m3
Carbon Monoxide: 104.83 μg/m3
Nitrogen Dioxide: 3.12 μg/m3
Sulphur Dioxide: 0.28 μg/m3
Ozone: 76.33 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 1:10 PM
Sunset: 8:56 PM
Daylight: 15 hrs 31 mins
Moonrise: 3:37 AM
Moon Transit: 11:43 AM
Moonset: 8:03 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

7:14 PM - 9:44 PM
11:13 AM - 1:43 PM

Minor Periods

7:33 PM - 9:03 PM
3:07 AM - 4:37 AM

Action Rating: 3 out of 5

Sunday, June 14, 2026

Weather Forecast

Sunny
91.7°F
52.1°F
71.7°F
34%
0 in
1%
0%
7.4 mph
9.3


Air Quality

AQI: 1 - Good
PM2.5: 1.52 μg/m3
PM10: 1.88 μg/m3
Carbon Monoxide: 102.13 μg/m3
Nitrogen Dioxide: 1.46 μg/m3
Sulphur Dioxide: 0.15 μg/m3
Ozone: 85.88 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 1:10 PM
Sunset: 8:56 PM
Daylight: 15 hrs 32 mins
Moonrise: 4:27 AM
Moon Transit: 12:50 AM
Moonset: 9:18 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

8:21 PM - 10:51 PM
12:20 AM - 2:50 PM

Minor Periods

8:48 PM - 10:18 PM
3:57 AM - 5:27 AM

Action Rating: 5 out of 5

Monday, June 15, 2026

Weather Forecast

Sunny
89.7°F
54.9°F
71.1°F
42%
0 in
1%
0%
7.8 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 2.42 μg/m3
PM10: 2.77 μg/m3
Carbon Monoxide: 109.92 μg/m3
Nitrogen Dioxide: 2.42 μg/m3
Sulphur Dioxide: 0.16 μg/m3
Ozone: 86.33 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 1:10 PM
Sunset: 8:57 PM
Daylight: 15 hrs 32 mins
Moonrise: 5:31 AM
Moon Transit: 1:58 PM
Moonset: 10:19 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:28 PM - 3:58 PM

Minor Periods

9:49 PM - 11:19 PM
5:01 AM - 6:31 AM

Action Rating: 4 out of 5

Tuesday, June 16, 2026

Weather Forecast

Sunny
81.9°F
49.3°F
66.8°F
55%
0 in
3%
0%
8.3 mph
10.4


Air Quality

AQI: 1 - Good
PM2.5: 4.07 μg/m3
PM10: 5.38 μg/m3
Carbon Monoxide: 109.42 μg/m3
Nitrogen Dioxide: 3.18 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 62.17 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 1:11 PM
Sunset: 8:57 PM
Daylight: 15 hrs 32 mins
Moonrise: 6:49 AM
Moon Transit: 3:03 PM
Moonset: 11:05 PM
Moon Phase: New
Moon Illumination: 1.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:33 PM - 5:03 PM

Minor Periods

12:00 AM - 12:00 AM
6:19 AM - 7:49 AM

Action Rating: 3 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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