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

Current Water Temperature

46.9°F

Measurement Time: Thursday, March 12, 2026, 9:50 AM 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

54.3°F
Overcast
Overcast
50.9°F
53.9°F
100%
SW 11.6 mph
15.1 mph
52.9°F
50.5°F
0 in
0%
9 mi
1026 mbar
0.2

Five Day Weather Forecast

Moderate rain
Thu
H: 55°F
L: 50°F
Moderate rain
Fri
H: 50°F
L: 44°F
Heavy rain
Sat
H: 45°F
L: 35°F
Overcast
Sun
H: 50°F
L: 33°F
Sunny
Mon
H: 65°F
L: 39°F

Air Quality

AQI: 1 - Good
PM2.5: 3.45 μg/m3
PM10: 4.35 μg/m3
Carbon Monoxide: 127.85 μg/m3
Nitrogen Dioxide: 2.95 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 62 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 12:00 AM
Sunset: 7:13 PM
Daylight: 11 hrs 45 mins
Moonrise: 4:14 AM
Moon Transit: 8:14 AM
Moonset: 12:18 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:44 AM - 10:14 AM
3:39 PM - 6:09 PM

Minor Periods

11:48 AM - 1:18 PM
3:44 AM - 5:14 AM

Action Rating: 3 out of 5

Flood Watch issued March 12 at 8:56AM PDT until March 16 at 11:00PM PDT by NWS Portland OR

Effective: Thu March 12, 2026, 8:56 AM
Expires: Thu March 12, 2026, 5:00 PM

...Forecast flooding changed to Minor severity for the following rivers in Oregon... Pudding River at Aurora affecting East Central Willamette Valley zone. * WHAT...Flooding is possible. * WHERE...Pudding River at Aurora. * WHEN...From Saturday afternoon to late Monday evening. * IMPACTS...Above 22.0 feet, expect minor flooding of low-lying agricultural lands and access roads along the river. * ADDITIONAL DETAILS... - At 8:00 AM PDT Thursday the stage was 10.6 feet. - Forecast...Flood stage may be reached Monday morning. - Flood stage is 22.0 feet. - http://www.weather.gov/safety/flood

If you are in the watch area, remain alert to possible flooding. Additional information is available at www.weather.gov. The next statement will be issued by 5 PM this afternoon.this afternoon at 500 PM PDT.


Flood Watch issued March 12 at 8:28AM PDT until March 13 at 11:00PM PDT by NWS Portland OR

Effective: Thu March 12, 2026, 8:28 AM
Expires: Thu March 12, 2026, 4:30 PM

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of northwest Oregon, including the following areas, Clackamas County Cascade Foothills, Clatsop County Coast, East Central Willamette Valley, East Portland Metro, Inner Portland Metro, Lower Columbia River, North Oregon Coast Range, North Oregon Coast Range Lowlands, Outer Southeast Portland Metro, Portland West Hills and Chehalem Mountain, Tillamook County Coast, Tualatin Valley, West Central Willamette Valley, West Columbia River Gorge I-84 Corridor and West Columbia River Gorge of Oregon above 500 ft and southwest Washington, including the following areas, Cowlitz County Lowlands, East Clark County Lowlands, Inner Vancouver Metro, North Clark County Lowlands, South Washington Cascade Foothills, West Columbia River Gorge SR 14 Corridor, Willapa Hills and Willapa and Wahkiakum Lowlands. * WHEN...Through Friday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Area creeks and streams are running high and could flood with more heavy rain. Landslides and debris flows are possible during this flood event. People, structures, and roads located below steep slopes, in canyons, and near the mouths of canyons may be at serious risk from rapidly moving landslides. * ADDITIONAL DETAILS... - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.


Thursday, March 12, 2026

Weather Forecast

Moderate rain
54.5°F
49.5°F
51.1°F
90%
0.22 in
89%
0%
13.2 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 4.64 μg/m3
PM10: 6.27 μg/m3
Carbon Monoxide: 146.73 μg/m3
Nitrogen Dioxide: 2.83 μg/m3
Sulphur Dioxide: 1.06 μg/m3
Ozone: 62.6 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 12:00 AM
Sunset: 7:13 PM
Daylight: 11 hrs 45 mins
Moonrise: 4:14 AM
Moon Transit: 8:14 AM
Moonset: 12:18 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:44 AM - 10:14 AM
3:39 PM - 6:09 PM

Minor Periods

11:48 AM - 1:18 PM
3:44 AM - 5:14 AM

Action Rating: 3 out of 5

Friday, March 13, 2026

Weather Forecast

Moderate rain
50.4°F
44.4°F
48.3°F
93%
0.28 in
85%
0%
10.5 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 2.61 μg/m3
PM10: 3.17 μg/m3
Carbon Monoxide: 129.57 μg/m3
Nitrogen Dioxide: 2.95 μg/m3
Sulphur Dioxide: 1.02 μg/m3
Ozone: 60.36 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:00 AM
Sunset: 7:14 PM
Daylight: 11 hrs 48 mins
Moonrise: 4:57 AM
Moon Transit: 9:06 AM
Moonset: 1:21 PM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%

Best Times for Fishing or Hunting

Major Periods

8:36 AM - 11:06 AM
4:31 PM - 7:01 PM

Minor Periods

12:51 AM - 2:21 PM
4:27 AM - 5:57 AM

Action Rating: 3 out of 5

Saturday, March 14, 2026

Weather Forecast

Heavy rain
45.1°F
34.7°F
42.1°F
77%
2.92 in
86%
0%
8.3 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 2.11 μg/m3
PM10: 2.41 μg/m3
Carbon Monoxide: 135.41 μg/m3
Nitrogen Dioxide: 3.3 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 62.8 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:00 AM
Sunset: 7:16 PM
Daylight: 11 hrs 51 mins
Moonrise: 5:31 AM
Moon Transit: 9:57 AM
Moonset: 2:30 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

5:21 PM - 7:51 PM
9:27 AM - 11:57 AM

Minor Periods

2:00 PM - 3:30 PM
5:01 AM - 6:31 AM

Action Rating: 2 out of 5

Sunday, March 15, 2026

Weather Forecast

Overcast
50°F
32.9°F
41.6°F
70%
0 in
0%
0%
4 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 3.99 μg/m3
PM10: 4.69 μg/m3
Carbon Monoxide: 198.94 μg/m3
Nitrogen Dioxide: 7.57 μg/m3
Sulphur Dioxide: 1.57 μg/m3
Ozone: 49.56 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 12:00 AM
Sunset: 7:17 PM
Daylight: 11 hrs 54 mins
Moonrise: 6:00 AM
Moon Transit: 10:45 AM
Moonset: 3:41 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

6:09 PM - 8:39 PM
10:15 AM - 12:45 AM

Minor Periods

3:11 PM - 4:41 PM
5:30 AM - 7:00 AM

Action Rating: 3 out of 5

Monday, March 16, 2026

Weather Forecast

Sunny
65.4°F
39.3°F
51.1°F
64%
0 in
0%
0%
5.6 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 7.39 μg/m3
PM10: 8.37 μg/m3
Carbon Monoxide: 273.94 μg/m3
Nitrogen Dioxide: 14.97 μg/m3
Sulphur Dioxide: 2.19 μg/m3
Ozone: 43.54 μg/m3

Astronomical

Sunrise: 7:21 AM
Sun Transit: 12:00 AM
Sunset: 7:18 PM
Daylight: 11 hrs 58 mins
Moonrise: 6:23 AM
Moon Transit: 11:33 AM
Moonset: 4:54 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.6%

Best Times for Fishing or Hunting

Major Periods

6:56 PM - 9:26 PM
11:03 AM - 1:33 PM

Minor Periods

4:24 PM - 5:54 PM
5:53 AM - 7:23 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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