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

Current Water Temperature

51.8°F

Measurement Time: Wednesday, June 24, 2026, 7:00 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

86.2°F
Sunny
Sunny
83.8°F
85.9°F
30%
NW 6.7 mph
7.7 mph
88.5°F
51.7°F
0 in
0%
9 mi
1016 mbar
6.6

Five Day Weather Forecast

Sunny
Wed
H: 91°F
L: 58°F
Patchy rain nearby
Thu
H: 75°F
L: 50°F
Moderate rain
Fri
H: 57°F
L: 51°F
Moderate rain
Sat
H: 55°F
L: 46°F
Patchy rain nearby
Sun
H: 66°F
L: 44°F

Air Quality

AQI: 1 - Good
PM2.5: 8.4 μg/m3
PM10: 11.1 μg/m3
Carbon Monoxide: 107 μg/m3
Nitrogen Dioxide: 0.7 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 106 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 1:13 PM
Sunset: 8:59 PM
Daylight: 15 hrs 32 mins
Moonrise: 4:35 PM
Moon Transit: 9:25 PM
Moonset: 1:44 AM
Moon Phase: First Quarter
Moon Illumination: 71.7%

Best Times for Fishing or Hunting

Major Periods

4:03 AM - 6:33 AM
8:55 PM - 11:25 PM

Minor Periods

4:05 PM - 5:35 PM
1:14 AM - 2:44 AM

Action Rating: 3 out of 5

Red Flag Warning issued June 24 at 11:00AM PDT until June 25 at 8:00PM PDT by NWS Pendleton OR

Effective: Wed June 24, 2026, 11:00 AM
Expires: Wed June 24, 2026, 11:00 PM

...Breezy winds and low relative humidity expected Thursday... .The combination of breezy winds and low relative humidity is expected to generate weather conditions conducive to rapid fire spread for new and existing fires in the lower Columbia Basin, Yakima and Kittitas valleys, and the Warm Springs Reservation. The National Weather Service in Pendleton has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon to 8 PM PDT Thursday. * AFFECTED AREA...Fire Weather Zone 703 Warm Springs Reservation. * TIMING...From noon to 8 PM PDT Thursday. * WINDS...West 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 15 percent. * IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.
Wednesday, June 24, 2026

Weather Forecast

Sunny
90.5°F
58.3°F
74.8°F
44%
0 in
1%
0%
9.8 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 9.33 μg/m3
PM10: 12.21 μg/m3
Carbon Monoxide: 112.5 μg/m3
Nitrogen Dioxide: 4.38 μg/m3
Sulphur Dioxide: 0.84 μg/m3
Ozone: 77.04 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 1:13 PM
Sunset: 8:59 PM
Daylight: 15 hrs 32 mins
Moonrise: 4:35 PM
Moon Transit: 9:25 PM
Moonset: 1:44 AM
Moon Phase: First Quarter
Moon Illumination: 71.7%

Best Times for Fishing or Hunting

Major Periods

4:03 AM - 6:33 AM
8:55 PM - 11:25 PM

Minor Periods

4:05 PM - 5:35 PM
1:14 AM - 2:44 AM

Action Rating: 3 out of 5

Thursday, June 25, 2026

Weather Forecast

Patchy rain nearby
74.6°F
49.5°F
62°F
57%
0.07 in
57%
0%
6.9 mph
6.7


Air Quality

AQI: 1 - Good
PM2.5: 6.84 μg/m3
PM10: 9.63 μg/m3
Carbon Monoxide: 109.04 μg/m3
Nitrogen Dioxide: 4.35 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 59.5 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 1:13 PM
Sunset: 8:59 PM
Daylight: 15 hrs 32 mins
Moonrise: 5:41 PM
Moon Transit: 10:11 PM
Moonset: 2:07 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.2%

Best Times for Fishing or Hunting

Major Periods

4:48 AM - 7:18 AM
12:00 AM - 12:00 AM

Minor Periods

5:11 PM - 6:41 PM
1:37 AM - 3:07 AM

Action Rating: 2 out of 5

Friday, June 26, 2026

Weather Forecast

Moderate rain
56.5°F
51.2°F
54.1°F
98%
0.55 in
95%
0%
4.9 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 2.85 μg/m3
PM10: 4.2 μg/m3
Carbon Monoxide: 95.25 μg/m3
Nitrogen Dioxide: 2.07 μg/m3
Sulphur Dioxide: 0.57 μg/m3
Ozone: 47.75 μg/m3

Astronomical

Sunrise: 5:28 AM
Sun Transit: 1:13 PM
Sunset: 8:59 PM
Daylight: 15 hrs 32 mins
Moonrise: 6:46 PM
Moon Transit: 11:00 PM
Moonset: 2:36 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 89.2%

Best Times for Fishing or Hunting

Major Periods

5:35 AM - 8:05 AM
12:00 AM - 12:00 AM

Minor Periods

6:16 PM - 7:46 PM
2:06 AM - 3:36 AM

Action Rating: 3 out of 5

Saturday, June 27, 2026

Weather Forecast

Moderate rain
55.2°F
46°F
50.2°F
95%
0.38 in
91%
0%
6 mph
4.2


Air Quality

AQI: 1 - Good
PM2.5: 3.71 μg/m3
PM10: 5.72 μg/m3
Carbon Monoxide: 95.45 μg/m3
Nitrogen Dioxide: 1.33 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 51.17 μg/m3

Astronomical

Sunrise: 5:28 AM
Sun Transit: 1:13 PM
Sunset: 8:59 PM
Daylight: 15 hrs 31 mins
Moonrise: 7:46 PM
Moon Transit: 11:50 PM
Moonset: 3:10 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.2%

Best Times for Fishing or Hunting

Major Periods

6:24 AM - 8:54 AM
12:00 AM - 12:00 AM

Minor Periods

7:16 PM - 8:46 PM
2:40 AM - 4:10 AM

Action Rating: 3 out of 5

Sunday, June 28, 2026

Weather Forecast

Patchy rain nearby
65.5°F
43.6°F
53.2°F
87%
0.04 in
70%
0%
4.7 mph
5.9


Air Quality

AQI: 1 - Good
PM2.5: 4.15 μg/m3
PM10: 6.43 μg/m3
Carbon Monoxide: 110.67 μg/m3
Nitrogen Dioxide: 2.72 μg/m3
Sulphur Dioxide: 0.72 μg/m3
Ozone: 44.67 μg/m3

Astronomical

Sunrise: 5:29 AM
Sun Transit: 1:14 PM
Sunset: 8:59 PM
Daylight: 15 hrs 31 mins
Moonrise: 8:40 PM
Moon Transit: 12:00 AM
Moonset: 3:53 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:15 AM - 9:45 AM

Minor Periods

8:10 PM - 9:40 PM
3:23 AM - 4:53 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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