Water Temperature of the South Santiam River in Cascadia, OR

Current Water Temperature

41.2°F

Measurement Time: Sunday, January 18, 2026, 3:50 AM PST

Temperature Locations

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Local Points of Interest

Cascadia State Park; Foster, OR

South Santiam River

Station Name: SOUTH SANTIAM RIVER BELOW CASCADIA, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 860 feet

Nearest Address:
47795 Santiam Hwy
Cascadia, OR 97329
Linn County

GPS Coordinates: 44.39179225, -122.4975817

Nearby Water Temperatures

Middle Santiam River, Foster, OR (4.7 mi)
South Santiam River, Sweet Home, OR (9.5 mi)
Middle Santiam River, Cascadia, OR (10.5 mi)
Quartzville Creek, Cascadia, OR (10.7 mi)
Blue River, Blue River, OR (16.6 mi)
North Fork Quartz Creek, Blue River, OR (16.9 mi)
Lookout Creek, Blue River, OR (17.3 mi)
Blue River Lake, Blue River, OR (17.4 mi)
South Santiam River, Waterloo, OR (17.7 mi)
Blue River, Blue River, OR (17.8 mi)
McKenzie River, Vida, OR (18.5 mi)
South Fork McKenzie River, Rainbow, OR (21.6 mi)
Smith River, Belknap Springs, OR (22.6 mi)
Smith River, Foster, OR (23.3 mi)
McKenzie River, Belknap Springs, OR (23.7 mi)

Weather for Cascadia, Oregon

Current Weather

37.9°F
Sunny
Sunny
37.1°F
53.9°F
82%
W 2.2 mph
6.7 mph
54.1°F
36.4°F
0 in
0%
9 mi
1027 mbar
1.6

Five Day Weather Forecast

Sunny
Sun
H: 59°F
L: 31°F
Sunny
Mon
H: 62°F
L: 31°F
Sunny
Tue
H: 59°F
L: 31°F
Cloudy
Wed
H: 57°F
L: 32°F
Patchy rain nearby
Thu
H: 44°F
L: 33°F

Air Quality

Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:41 AM
Sun Transit: 12:20 AM
Sunset: 5:01 PM
Daylight: 9 hrs 20 mins
Moonrise: 8:01 AM
Moon Transit: 12:24 AM
Moonset: 4:55 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

7:50 PM - 10:20 PM
11:54 AM - 2:24 PM

Minor Periods

4:25 PM - 5:55 PM
7:31 AM - 9:01 AM

Action Rating: 4 out of 5

Air Stagnation Advisory issued January 17 at 3:06PM PST until January 20 at 10:00AM PST by NWS Portland OR

Effective: Sat January 17, 2026, 3:06 PM
Expires: Sun January 18, 2026, 6:00 AM

* WHAT...Light winds and limited air movement will lead to a period of stagnant air conditions. * WHERE...Central and Southern Willamette Valley, and Tualatin Valley. * WHEN...From 7 PM this evening to 10 AM PST Tuesday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems.

State air quality agencies highly recommend that no outdoor burning occur and that residential wood burning devices be limited as much as possible. According to state air quality agencies, prolonged periods of stagnant air can hold pollutants close to the ground where people live and breathe. Check with your local burn agency for any current restrictions in your area. People with respiratory illness should follow their physician's advice for dealing with high levels of air pollution during periods of stagnant air, especially if an Air Quality Alert is in effect for your area. To see if an Air Quality Alert is in effect for your area, go to www.weather.gov/pqr and left-click your location on the homepage map display. Alternatively, you could also type your location into the search bar found on the top-left hand side of the homepage. From there, you will see an Air Quality Alert listed at the top if one is in effect for your location; you can click the alert to read more details if applicable.


Air Stagnation Advisory issued January 18 at 2:06AM PST until January 20 at 10:00AM PST by NWS Portland OR

Effective: Sun January 18, 2026, 2:06 AM
Expires: Tue January 20, 2026, 10:00 AM

* WHAT...Light winds and limited air movement will lead to a period of stagnant air conditions. * WHERE...Central and Southern Willamette Valley, and Tualatin Valley. * WHEN...Until 10 AM PST Tuesday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems.

State air quality agencies highly recommend that no outdoor burning occur and that residential wood burning devices be limited as much as possible. According to state air quality agencies, prolonged periods of stagnant air can hold pollutants close to the ground where people live and breathe. Check with your local burn agency for any current restrictions in your area. People with respiratory illness should follow their physician's advice for dealing with high levels of air pollution during periods of stagnant air, especially if an Air Quality Alert is in effect for your area. To see if an Air Quality Alert is in effect for your area, go to www.weather.gov/pqr and left-click your location on the homepage map display. Alternatively, you could also type your location into the search bar found on the top-left hand side of the homepage. From there, you will see an Air Quality Alert listed at the top if one is in effect for your location; you can click the alert to read more details if applicable.


Sunday, January 18, 2026

Weather Forecast

Sunny
59.3°F
31.4°F
40°F
70%
0 in
0%
0%
4.7 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 8.46 μg/m3
PM10: 9.02 μg/m3
Carbon Monoxide: 272.23 μg/m3
Nitrogen Dioxide: 9.14 μg/m3
Sulphur Dioxide: 1.09 μg/m3
Ozone: 40.85 μg/m3

Astronomical

Sunrise: 7:41 AM
Sun Transit: 12:20 AM
Sunset: 5:01 PM
Daylight: 9 hrs 20 mins
Moonrise: 8:01 AM
Moon Transit: 12:24 AM
Moonset: 4:55 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

7:50 PM - 10:20 PM
11:54 AM - 2:24 PM

Minor Periods

4:25 PM - 5:55 PM
7:31 AM - 9:01 AM

Action Rating: 4 out of 5

Monday, January 19, 2026

Weather Forecast

Sunny
61.6°F
30.6°F
38°F
68%
0 in
0%
0%
5.8 mph
0


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:40 AM
Sun Transit: 12:20 AM
Sunset: 5:02 PM
Daylight: 9 hrs 22 mins
Moonrise: 8:31 AM
Moon Transit: 1:13 PM
Moonset: 6:06 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

8:38 PM - 11:08 PM
12:43 AM - 3:13 PM

Minor Periods

5:36 PM - 7:06 PM
8:01 AM - 9:31 AM

Action Rating: 4 out of 5

Tuesday, January 20, 2026

Weather Forecast

Sunny
59.2°F
30.9°F
40.5°F
66%
0 in
0%
0%
5.8 mph
2


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:39 AM
Sun Transit: 12:21 AM
Sunset: 5:03 PM
Daylight: 9 hrs 24 mins
Moonrise: 8:55 AM
Moon Transit: 2:00 PM
Moonset: 7:17 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

9:25 PM - 11:55 PM
1:30 PM - 4:00 PM

Minor Periods

6:47 PM - 8:17 PM
8:25 AM - 9:55 AM

Action Rating: 3 out of 5

Wednesday, January 21, 2026

Weather Forecast

Cloudy
56.5°F
31.5°F
40.8°F
73%
0 in
0%
0%
4.5 mph
1


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:38 AM
Sun Transit: 12:21 AM
Sunset: 5:05 PM
Daylight: 9 hrs 26 mins
Moonrise: 9:15 AM
Moon Transit: 2:45 PM
Moonset: 8:28 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:15 PM - 4:45 PM

Minor Periods

7:58 PM - 9:28 PM
8:45 AM - 10:15 AM

Action Rating: 3 out of 5

Thursday, January 22, 2026

Weather Forecast

Patchy rain nearby
44.3°F
32.9°F
40.1°F
94%
0.03 in
86%
0%
2.9 mph
1


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:38 AM
Sun Transit: 12:21 AM
Sunset: 5:06 PM
Daylight: 9 hrs 28 mins
Moonrise: 9:34 AM
Moon Transit: 3:30 PM
Moonset: 9:39 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:00 PM - 5:30 PM

Minor Periods

9:09 PM - 10:39 PM
9:04 AM - 10:34 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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