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

Current Water Temperature

52.0°F

Measurement Time: Wednesday, June 10, 2026, 6:00 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

48°F
Clear
Clear
46.9°F
54.1°F
86%
E 3.6 mph
7.5 mph
54.2°F
43.3°F
0 in
0%
9 mi
1022 mbar
0

Five Day Weather Forecast

Sunny
Thu
H: 79°F
L: 50°F
Sunny
Fri
H: 75°F
L: 44°F
Sunny
Sat
H: 83°F
L: 42°F
Sunny
Sun
H: 93°F
L: 54°F
Sunny
Mon
H: 90°F
L: 57°F

Air Quality

AQI: 1 - Good
PM2.5: 4.5 μg/m3
PM10: 5.5 μg/m3
Carbon Monoxide: 124 μg/m3
Nitrogen Dioxide: 11.1 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 32 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:10 PM
Sunset: 8:55 PM
Daylight: 15 hrs 30 mins
Moonrise: 2:32 AM
Moon Transit: 9:46 AM
Moonset: 5:17 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.5%

Best Times for Fishing or Hunting

Major Periods

5:11 PM - 7:41 PM
9:16 AM - 11:46 AM

Minor Periods

4:47 PM - 6:17 PM
2:02 AM - 3:32 AM

Action Rating: 2 out of 5

Extreme Heat Watch issued June 10 at 10:01AM PDT until June 16 at 11:00PM PDT by NWS Portland OR

Effective: Wed June 10, 2026, 10:01 AM
Expires: Wed June 10, 2026, 11:30 PM

* WHAT...Dangerously hot conditions with temperatures between 95 and 100 degrees possible. * WHERE...Portland Metro Hills, Central Willamette Valley, and Lower Columbia River. * WHEN...From Sunday morning through Tuesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Low temperatures between 63 to 67 degrees are possible for Monday morning and Tuesday morning. However, there is a 5-15% chance low temperatures will remain above 70 degrees Monday morning and a 15-30% chance Tuesday morning, which would lead to poor 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. 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. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.


Extreme Heat Watch issued June 10 at 9:27PM PDT until June 16 at 11:00PM PDT by NWS Portland OR

Effective: Wed June 10, 2026, 9:27 PM
Expires: Thu June 11, 2026, 12:00 PM

* WHAT...Dangerously hot conditions with temperatures between 95 and 100 degrees possible. * WHERE...Greater Portland Metro, Central Willamette Valley, Western Columbia River Gorge, Lower Columbia River, Inner Vancouver Metro, and East Clark County Lowlands. * WHEN...From Sunday morning through Tuesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Low temperatures between 63 to 67 degrees are possible for Monday morning and Tuesday morning. However, there is a 5-15% chance low temperatures will remain above 70 degrees Monday morning and a 15-25% chance Tuesday morning, which would lead to poor 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. 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. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.


Thursday, June 11, 2026

Weather Forecast

Sunny
78.6°F
49.6°F
62°F
56%
0 in
3%
0%
7.8 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 4.19 μg/m3
PM10: 5.38 μg/m3
Carbon Monoxide: 115.04 μg/m3
Nitrogen Dioxide: 5.91 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 49.54 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:10 PM
Sunset: 8:55 PM
Daylight: 15 hrs 30 mins
Moonrise: 2:32 AM
Moon Transit: 9:46 AM
Moonset: 5:17 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.5%

Best Times for Fishing or Hunting

Major Periods

5:11 PM - 7:41 PM
9:16 AM - 11:46 AM

Minor Periods

4:47 PM - 6:17 PM
2:02 AM - 3:32 AM

Action Rating: 2 out of 5

Friday, June 12, 2026

Weather Forecast

Sunny
75.1°F
44.4°F
60.1°F
61%
0 in
3%
0%
8.3 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 4.7 μg/m3
PM10: 6.45 μg/m3
Carbon Monoxide: 117.54 μg/m3
Nitrogen Dioxide: 4.7 μg/m3
Sulphur Dioxide: 0.58 μg/m3
Ozone: 52.79 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:10 PM
Sunset: 8:56 PM
Daylight: 15 hrs 30 mins
Moonrise: 3:00 AM
Moon Transit: 10:42 AM
Moonset: 6:41 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

6:09 PM - 8:39 PM
10:12 AM - 12:42 AM

Minor Periods

6:11 PM - 7:41 PM
2:30 AM - 4:00 AM

Action Rating: 3 out of 5

Saturday, June 13, 2026

Weather Forecast

Sunny
82.9°F
41.5°F
62.1°F
58%
0 in
3%
0%
8.5 mph
8.8


Air Quality

AQI: 1 - Good
PM2.5: 4.4 μg/m3
PM10: 5.53 μg/m3
Carbon Monoxide: 118.67 μg/m3
Nitrogen Dioxide: 4.33 μg/m3
Sulphur Dioxide: 0.51 μg/m3
Ozone: 64.29 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:10 PM
Sunset: 8:56 PM
Daylight: 15 hrs 31 mins
Moonrise: 3:37 AM
Moon Transit: 11:44 AM
Moonset: 8:03 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

7:13 PM - 9:43 PM
11:14 AM - 1:44 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
92.7°F
53.5°F
72.2°F
42%
0 in
1%
0%
7.2 mph
8.8


Air Quality

AQI: 1 - Good
PM2.5: 1.4 μg/m3
PM10: 1.61 μg/m3
Carbon Monoxide: 110.85 μg/m3
Nitrogen Dioxide: 2.72 μg/m3
Sulphur Dioxide: 0.21 μg/m3
Ozone: 68.25 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 1:11 PM
Sunset: 8:57 PM
Daylight: 15 hrs 31 mins
Moonrise: 4:28 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
3:58 AM - 5:28 AM

Action Rating: 5 out of 5

Monday, June 15, 2026

Weather Forecast

Sunny
90.3°F
56.7°F
69.1°F
45%
0 in
2%
0%
8.3 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 2.07 μg/m3
PM10: 2.33 μg/m3
Carbon Monoxide: 138.5 μg/m3
Nitrogen Dioxide: 6.97 μg/m3
Sulphur Dioxide: 0.18 μg/m3
Ozone: 42.83 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 1:11 PM
Sunset: 8:57 PM
Daylight: 15 hrs 32 mins
Moonrise: 5:32 AM
Moon Transit: 1:58 PM
Moonset: 10:20 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

9:28 PM - 11:58 PM
1:28 PM - 3:58 PM

Minor Periods

9:50 PM - 11:20 PM
5:02 AM - 6:32 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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