Water Temperature of the South Santiam River in Cascadia, OR

Current Water Temperature

42.1°F

Measurement Time: Friday, November 21, 2025, 9:00 PM PST

Temperature Locations

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Local Points of Interest

Cascadia State Park; Foster, OR

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South Santiam River

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

Elevation Above Sea Level: 860 feet / 262 meters

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

39.6°F
Mist
Conditions: Mist
Humidity: 100%
Feels Like: 37°F
Wind: E 3.8 mph
Wind Gusts: 8 mph
Pressure: 30.22 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 0 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Sat
H: 57°F
L: 32°F
Heavy rain
Sun
H: 48°F
L: 41°F
Patchy rain nearby
Mon
H: 43°F
L: 28°F
Partly Cloudy
Tue
H: 50°F
L: 21°F
Moderate rain
Wed
H: 39°F
L: 35°F

Air Quality

AQI: 1 - Good
PM2.5: 11.55 μg/m3
PM10: 12.55 μg/m3
Carbon Monoxide: 252.85 μg/m3
Nitrogen Dioxide: 4.75 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 69 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 11:56 AM
Sunset: 4:37 PM
Daylight: 9 hrs 21 mins
Moonrise: 9:59 AM
Moon Transit: 2:00 PM
Moonset: 6:00 PM
Moon Phase: New
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

9:26 PM - 11:56 PM
1:30 PM - 4:00 PM

Minor Periods

5:30 PM - 7:00 PM
9:29 AM - 10:59 AM

Action Rating: 3 out of 5

Dense Fog Advisory issued November 21 at 9:56PM PST until November 22 at 11:00AM PST by NWS Portland OR

Effective: Fri November 21, 2025, 9:56 PM
Expires: Sat November 22, 2025, 10:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...South Willamette Valley. * WHEN...Until 11 AM PST Saturday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you. If driving, slow down and leave plenty of distance ahead of you. Pedestrians and cyclists should wear bright or reflective clothing to increase the chances of being seen by others in poor visibility conditions.


Dense Fog Advisory issued November 21 at 11:56PM PST until November 22 at 11:00AM PST by NWS Portland OR

Effective: Fri November 21, 2025, 11:56 PM
Expires: Sat November 22, 2025, 11:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Central and Southern Willamette Valley. * WHEN...Until 11 AM PST Saturday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you. If driving, slow down and leave plenty of distance ahead of you. Pedestrians and cyclists should wear bright or reflective clothing to increase the chances of being seen by others in poor visibility conditions.


Dense Fog Advisory issued November 21 at 9:56PM PST until November 22 at 11:00AM PST by NWS Portland OR

Effective: Fri November 21, 2025, 9:56 PM
Expires: Sat November 22, 2025, 10:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Central Willamette Valley. * WHEN...Until 11 AM PST Saturday. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you. If driving, slow down and leave plenty of distance ahead of you. Pedestrians and cyclists should wear bright or reflective clothing to increase the chances of being seen by others in poor visibility conditions.


Beach Hazards Statement issued November 21 at 2:02PM PST until November 24 at 4:00AM PST by NWS Portland OR

Effective: Fri November 21, 2025, 2:02 PM
Expires: Sat November 22, 2025, 4:00 PM

* WHAT...Sneaker waves possible. * WHERE...North and Central Coast of Oregon, and South Washington Coast. * WHEN...Through late Sunday night. * IMPACTS...Waves can run up significantly farther on a beach than normal, including over rocks and jetties. Sneaker waves can suddenly knock people off of their feet and quickly pull them into the frigid ocean which may lead to serious injury or drowning. * ADDITIONAL DETAILS...A Beach Hazards Statement is issued when sneaker waves create potentially life-threatening conditions in the surf zone. Caution should be used when in or near the water. Always keep an eye on the waves, and be especially watchful of children. Those participating in razor clam digs should exercise caution.

Remain out of the water to avoid hazardous swimming conditions.


Beach Hazards Statement issued November 22 at 2:18AM PST until November 24 at 10:00AM PST by NWS Portland OR

Effective: Sat November 22, 2025, 2:18 AM
Expires: Sat November 22, 2025, 8:00 PM

* WHAT...Sneaker waves possible. * WHERE...North and Central Coast of Oregon, and South Washington Coast. * WHEN...Through Monday morning. * IMPACTS...Waves can run up significantly farther on a beach than normal, including over rocks and jetties. Sneaker waves can suddenly knock people off of their feet and quickly pull them into the frigid ocean which may lead to serious injury or drowning. * ADDITIONAL DETAILS...A Beach Hazards Statement is issued when sneaker waves create potentially life-threatening conditions in the surf zone. Caution should be used when in or near the water. Always keep an eye on the waves, and be especially watchful of children. Those participating in razor clam digs should exercise caution.

Remain out of the water to avoid hazardous swimming conditions.


Saturday, November 22, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 45.5°F
Average Humidity: 59%
Chance of Rain: 0%
Wind: 4.3 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 14.69 μg/m3
PM10: 15.39 μg/m3
Carbon Monoxide: 192.97 μg/m3
Nitrogen Dioxide: 10.29 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 40.96 μg/m3

Astronomical

Sunrise: 7:16 AM
Sun Transit: 11:56 AM
Sunset: 4:37 PM
Daylight: 9 hrs 21 mins
Moonrise: 9:59 AM
Moon Transit: 2:00 PM
Moonset: 6:00 PM
Moon Phase: New
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

9:26 PM - 11:56 PM
1:30 PM - 4:00 PM

Minor Periods

5:30 PM - 7:00 PM
9:29 AM - 10:59 AM

Action Rating: 3 out of 5

Sunday, November 23, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 44.8°F
Average Humidity: 80%
Chance of Rain: 82%
Wind: 7.6 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 27.17 μg/m3
PM10: 29.32 μg/m3
Carbon Monoxide: 584.05 μg/m3
Nitrogen Dioxide: 10.67 μg/m3
Sulphur Dioxide: 1.9 μg/m3
Ozone: 46.4 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 11:56 AM
Sunset: 4:36 PM
Daylight: 9 hrs 19 mins
Moonrise: 10:47 AM
Moon Transit: 2:51 PM
Moonset: 6:59 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:21 PM - 4:51 PM

Minor Periods

6:29 PM - 7:59 PM
10:17 AM - 11:47 AM

Action Rating: 3 out of 5

Monday, November 24, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 37.3°F
Average Humidity: 88%
Chance of Rain: 71%
Wind: 4.5 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 6.79 μg/m3
PM10: 8.01 μg/m3
Carbon Monoxide: 253.85 μg/m3
Nitrogen Dioxide: 3.15 μg/m3
Sulphur Dioxide: 1.5 μg/m3
Ozone: 75.52 μg/m3

Astronomical

Sunrise: 7:18 AM
Sun Transit: 11:56 AM
Sunset: 4:35 PM
Daylight: 9 hrs 17 mins
Moonrise: 11:26 AM
Moon Transit: 3:42 PM
Moonset: 8:05 PM
Moon Phase: Waxing Crescent
Moon Illumination: 15.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:12 PM - 5:42 PM

Minor Periods

7:35 PM - 9:05 PM
10:56 AM - 12:26 AM

Action Rating: 2 out of 5

Tuesday, November 25, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 34.8°F
Average Humidity: 81%
Chance of Rain: 0%
Wind: 5.1 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 14.1 μg/m3
PM10: 14.67 μg/m3
Carbon Monoxide: 229.41 μg/m3
Nitrogen Dioxide: 8.19 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 58.64 μg/m3

Astronomical

Sunrise: 7:19 AM
Sun Transit: 11:57 AM
Sunset: 4:35 PM
Daylight: 9 hrs 16 mins
Moonrise: 11:57 AM
Moon Transit: 4:31 PM
Moonset: 9:13 PM
Moon Phase: Waxing Crescent
Moon Illumination: 25.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:01 PM - 6:31 PM

Minor Periods

8:43 PM - 10:13 PM
11:27 AM - 12:57 AM

Action Rating: 2 out of 5

Wednesday, November 26, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 38.3°F
Average Humidity: 92%
Chance of Rain: 82%
Wind: 5.4 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 10.87 μg/m3
PM10: 11.83 μg/m3
Carbon Monoxide: 237 μg/m3
Nitrogen Dioxide: 5.04 μg/m3
Sulphur Dioxide: 2.77 μg/m3
Ozone: 78.38 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 11:57 AM
Sunset: 4:34 PM
Daylight: 9 hrs 14 mins
Moonrise: 12:23 AM
Moon Transit: 5:18 PM
Moonset: 10:24 PM
Moon Phase: First Quarter
Moon Illumination: 35.3%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

9:54 PM - 11:24 PM
11:53 AM - 1:23 PM

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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