Water Temperature of the South Santiam River in Sweet Home, OR

Current Water Temperature

50.2°F

Measurement Time: Tuesday, April 7, 2026, 7:40 PM PDT

Temperature Locations

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Local Points of Interest

Foster Reservoir; Foster Dam; Andrew Wiley Park; Camp Koinonia

South Santiam River

Station Name: SOUTH SANTIAM RIVER NEAR FOSTER, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 564 feet

Nearest Address:
42853 Green River Dr
Sweet Home, OR 97386
Linn County

GPS Coordinates: 44.4123468, -122.6886956

Nearby Water Temperatures

Middle Santiam River, Foster, OR (7.3 mi)
South Santiam River, Waterloo, OR (8.9 mi)
South Santiam River, Cascadia, OR (9.5 mi)
Quartzville Creek, Cascadia, OR (15.3 mi)
Middle Santiam River, Cascadia, OR (17.2 mi)
McKenzie River, Vida, OR (22.6 mi)
McKenzie River, Walterville, OR (24 mi)
North Fork Quartz Creek, Blue River, OR (24.3 mi)
Blue River Lake, Blue River, OR (24.5 mi)
Blue River, Blue River, OR (24.6 mi)
North Santiam River, Jefferson, OR (24.8 mi)
Blue River, Blue River, OR (24.9 mi)
North Santiam River, Mehama, OR (25.3 mi)
Camp Creek, Springfield, OR (25.5 mi)
Lookout Creek, Blue River, OR (25.5 mi)

Weather for Sweet Home, Oregon

Current Weather

43°F
Clear
Clear
42.7°F
47.7°F
82%
ESE 2.2 mph
2.8 mph
47.6°F
35.5°F
0 in
0%
9 mi
1019 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 72°F
L: 44°F
Sunny
Thu
H: 65°F
L: 47°F
Partly Cloudy
Fri
H: 62°F
L: 49°F
Moderate rain
Sat
H: 57°F
L: 46°F
Patchy rain nearby
Sun
H: 46°F
L: 36°F

Air Quality

AQI: 1 - Good
PM2.5: 10.95 μg/m3
PM10: 12.55 μg/m3
Carbon Monoxide: 178.85 μg/m3
Nitrogen Dioxide: 6.15 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 34 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 1:12 PM
Sunset: 7:47 PM
Daylight: 13 hrs 8 mins
Moonrise: 2:06 AM
Moon Transit: 6:05 AM
Moonset: 10:07 AM
Moon Phase: Last Quarter
Moon Illumination: 53.2%

Best Times for Fishing or Hunting

Major Periods

5:35 AM - 8:05 AM
1:30 PM - 4:00 PM

Minor Periods

9:37 AM - 11:07 AM
1:36 AM - 3:06 AM

Action Rating: 2 out of 5

Frost Advisory issued April 7 at 9:21AM PDT until April 8 at 9:00AM PDT by NWS Portland OR

Effective: Tue April 7, 2026, 9:21 AM
Expires: Wed April 8, 2026, 9:00 AM

* WHAT...Temperatures as low as 34 to 36 degrees will result in frost formation. * WHERE...Central and Southern Willamette Valley, Tualatin Valley, and Inner Vancouver Metro. * WHEN...From 11 PM this evening to 9 AM PDT Wednesday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures. Consider temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants.
Wednesday, April 8, 2026

Weather Forecast

Sunny
71.8°F
43.9°F
54.3°F
61%
0 in
0%
0%
5.1 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 8.88 μg/m3
PM10: 10.76 μg/m3
Carbon Monoxide: 188.41 μg/m3
Nitrogen Dioxide: 8.05 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 54.08 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 1:12 PM
Sunset: 7:47 PM
Daylight: 13 hrs 8 mins
Moonrise: 2:06 AM
Moon Transit: 6:05 AM
Moonset: 10:07 AM
Moon Phase: Last Quarter
Moon Illumination: 53.2%

Best Times for Fishing or Hunting

Major Periods

5:35 AM - 8:05 AM
1:30 PM - 4:00 PM

Minor Periods

9:37 AM - 11:07 AM
1:36 AM - 3:06 AM

Action Rating: 2 out of 5

Thursday, April 9, 2026

Weather Forecast

Sunny
64.9°F
47.1°F
55.7°F
66%
0 in
0%
0%
6.3 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 10.56 μg/m3
PM10: 12.39 μg/m3
Carbon Monoxide: 188.37 μg/m3
Nitrogen Dioxide: 8.14 μg/m3
Sulphur Dioxide: 2 μg/m3
Ozone: 61.92 μg/m3

Astronomical

Sunrise: 6:37 AM
Sun Transit: 1:12 PM
Sunset: 7:48 PM
Daylight: 13 hrs 11 mins
Moonrise: 2:52 AM
Moon Transit: 6:57 AM
Moonset: 11:07 AM
Moon Phase: Last Quarter
Moon Illumination: 41.9%

Best Times for Fishing or Hunting

Major Periods

6:27 AM - 8:57 AM
2:21 PM - 4:51 PM

Minor Periods

10:37 AM - 12:07 AM
2:22 AM - 3:52 AM

Action Rating: 3 out of 5

Friday, April 10, 2026

Weather Forecast

Partly Cloudy
62.4°F
49.1°F
54.5°F
77%
0 in
0%
0%
5.1 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 8.31 μg/m3
PM10: 9.16 μg/m3
Carbon Monoxide: 204.41 μg/m3
Nitrogen Dioxide: 7.15 μg/m3
Sulphur Dioxide: 1.67 μg/m3
Ozone: 58.68 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 1:12 PM
Sunset: 7:49 PM
Daylight: 13 hrs 14 mins
Moonrise: 3:29 AM
Moon Transit: 7:47 AM
Moonset: 12:12 AM
Moon Phase: Last Quarter
Moon Illumination: 31.0%

Best Times for Fishing or Hunting

Major Periods

7:17 AM - 9:47 AM
3:11 PM - 5:41 PM

Minor Periods

11:42 AM - 1:12 PM
2:59 AM - 4:29 AM

Action Rating: 2 out of 5

Saturday, April 11, 2026

Weather Forecast

Moderate rain
57.3°F
46.3°F
50.5°F
88%
0.47 in
88%
0%
7.6 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 5.73 μg/m3
PM10: 7.59 μg/m3
Carbon Monoxide: 165.53 μg/m3
Nitrogen Dioxide: 3 μg/m3
Sulphur Dioxide: 1.67 μg/m3
Ozone: 76.72 μg/m3

Astronomical

Sunrise: 6:34 AM
Sun Transit: 1:11 PM
Sunset: 7:51 PM
Daylight: 13 hrs 17 mins
Moonrise: 3:59 AM
Moon Transit: 8:36 AM
Moonset: 1:21 PM
Moon Phase: Last Quarter
Moon Illumination: 21.1%

Best Times for Fishing or Hunting

Major Periods

8:06 AM - 10:36 AM
3:59 PM - 6:29 PM

Minor Periods

12:51 AM - 2:21 PM
3:29 AM - 4:59 AM

Action Rating: 2 out of 5

Sunday, April 12, 2026

Weather Forecast

Patchy rain nearby
45.6°F
36.3°F
43.5°F
96%
0.13 in
77%
0%
5.4 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 4.97 μg/m3
PM10: 6.9 μg/m3
Carbon Monoxide: 187.76 μg/m3
Nitrogen Dioxide: 3.18 μg/m3
Sulphur Dioxide: 1.61 μg/m3
Ozone: 69.46 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 1:11 PM
Sunset: 7:52 PM
Daylight: 13 hrs 20 mins
Moonrise: 4:24 AM
Moon Transit: 9:23 AM
Moonset: 2:32 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:53 AM - 11:23 AM
4:46 PM - 7:16 PM

Minor Periods

2:02 PM - 3:32 PM
3:54 AM - 5:24 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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