Water Temperature of the South Santiam River in Cascadia, OR

Current Water Temperature

49.1°F 9.5°C
Frigid Dangerously Cold
49.1°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Severe hypothermia and cold water shock risk. Unprotected swimming causes rapid loss of dexterity in under 5 minutes.

Measurement Time: Thursday, November 12, 2026, 2:50 AM 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

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

63.3°F
Overcast
Conditions: Overcast
Humidity: 51%
Feels Like: 61.3°F
Wind: NW 1.7 mph
Wind Gusts: 2 mph
Pressure: 29.73 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 23.8 mi
UV Index: 1.9

Five-Day Weather Forecast

Overcast
Thu
H: 66°F
L: 52°F
Moderate Rain
Fri
H: 58°F
L: 47°F
Moderate Drizzle
Sat
H: 53°F
L: 47°F
Light Rain Showers
Sun
H: 51°F
L: 44°F
Light Drizzle
Mon
H: 53°F
L: 39°F

Air Quality

EPA Index 2 • Moderate

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

PM2.5
32.4 μg/m³
Moderate
PM10
33.1 μg/m³
Good
Ozone (O3)
56 μg/m³
Photochemical
NO2
5.5 μg/m³
Nitrogen Dioxide
SO2
0.9 μg/m³
Sulfur Dioxide
CO
272 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 43m daylight
Sunrise 7:02 AM
Solar Noon 11:54 AM
Sunset 4:46 PM
Moon
Waxing Crescent • 6%
Moonrise 10:43 AM
Transit 2:46 PM
Moonset 6:53 PM

Best Times for Fishing or Hunting

Major Periods

1:51 AM - 4:21 AM
2:16 PM - 4:46 PM

Minor Periods

10:13 AM - 11:43 AM
6:23 PM - 7:53 PM
Action Rating:
Good Action 3/5
Thursday, November 12, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 56.5°F
Average Humidity: 56%
Chance of Rain: 3%
Wind: 6 mph
UV Index: 2.3

Air Quality

EPA Index 3 • Unhealthy for Sensitive Groups
PM2.5
39 μg/m³
Unhealthy for Sensitive Groups
PM10
39.9 μg/m³
Good
Ozone (O3)
42.8 μg/m³
Photochemical
NO2
10.7 μg/m³
Nitrogen Dioxide
SO2
1.4 μg/m³
Sulfur Dioxide
CO
304.1 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 43m daylight
Sunrise 7:02 AM
Solar Noon 11:54 AM
Sunset 4:46 PM
Moon
Waxing Crescent • 6%
Moonrise 10:43 AM
Transit 2:46 PM
Moonset 6:53 PM

Best Times for Fishing or Hunting

Major Periods

1:51 AM - 4:21 AM
2:16 PM - 4:46 PM

Minor Periods

10:13 AM - 11:43 AM
6:23 PM - 7:53 PM
Action Rating:
Good Action 3/5
Friday, November 13, 2026

Weather Forecast

Conditions: Moderate Rain
Average Temperature: 51.4°F
Average Humidity: 71%
Chance of Rain: 100%
Wind: 11.5 mph
UV Index: 1.7

Air Quality

EPA Index 3 • Unhealthy for Sensitive Groups
PM2.5
8.8 μg/m³
Good
PM10
9.4 μg/m³
Good
Ozone (O3)
78.9 μg/m³
Photochemical
NO2
2.8 μg/m³
Nitrogen Dioxide
SO2
0.5 μg/m³
Sulfur Dioxide
CO
159.3 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 41m daylight
Sunrise 7:04 AM
Solar Noon 11:54 AM
Sunset 4:45 PM
Moon
Waxing Crescent • 13%
Moonrise 11:26 AM
Transit 3:37 PM
Moonset 7:52 PM

Best Times for Fishing or Hunting

Major Periods

2:42 AM - 5:12 AM
3:07 PM - 5:37 PM

Minor Periods

10:56 AM - 12:26 PM
7:22 PM - 8:52 PM
Action Rating:
Fair Action 2/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Moderate Drizzle
Average Temperature: 49.3°F
Average Humidity: 89%
Chance of Rain: 82%
Wind: 7.9 mph
UV Index: 1.7

Air Quality

EPA Index 1 • Good
PM2.5
6.2 μg/m³
Good
PM10
6.4 μg/m³
Good
Ozone (O3)
69.4 μg/m³
Photochemical
NO2
2 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
170 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 39m daylight
Sunrise 7:05 AM
Solar Noon 11:54 AM
Sunset 4:44 PM
Moon
Waxing Crescent • 21%
Moonrise 12:02 PM
Transit 4:25 PM
Moonset 8:56 PM

Best Times for Fishing or Hunting

Major Periods

3:31 AM - 6:01 AM
3:55 PM - 6:25 PM

Minor Periods

11:32 AM - 1:02 PM
8:26 PM - 9:56 PM
Action Rating:
Fair Action 2/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Light Rain Showers
Average Temperature: 47.8°F
Average Humidity: 96%
Chance of Rain: 97%
Wind: 7.5 mph
UV Index: 0.2

Air Quality

EPA Index 1 • Good
PM2.5
6.6 μg/m³
Good
PM10
6.9 μg/m³
Good
Ozone (O3)
66.9 μg/m³
Photochemical
NO2
2.4 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
150.8 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 37m daylight
Sunrise 7:06 AM
Solar Noon 11:54 AM
Sunset 4:43 PM
Moon
Waxing Crescent • 31%
Moonrise 12:31 PM
Transit 5:11 PM
Moonset 10:01 PM

Best Times for Fishing or Hunting

Major Periods

4:19 AM - 6:49 AM
4:41 PM - 7:11 PM

Minor Periods

12:01 PM - 1:31 PM
9:31 PM - 11:01 PM
Action Rating:
Very Good 4/5
Monday, November 16, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 45.5°F
Average Humidity: 86%
Chance of Rain: 44%
Wind: 5.8 mph
UV Index: 2.7

Air Quality

EPA Index 2 • Moderate
PM2.5
10.6 μg/m³
Good
PM10
11.8 μg/m³
Good
Ozone (O3)
63.8 μg/m³
Photochemical
NO2
2.7 μg/m³
Nitrogen Dioxide
SO2
0.6 μg/m³
Sulfur Dioxide
CO
153.3 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 34m daylight
Sunrise 7:08 AM
Solar Noon 11:54 AM
Sunset 4:42 PM
Moon
First Quarter • 42%
Moonrise 12:54 PM
Transit 5:56 PM
Moonset 11:07 PM

Best Times for Fishing or Hunting

Major Periods

5:04 AM - 7:34 AM
5:26 PM - 7:56 PM

Minor Periods

12:24 PM - 1:54 PM
10:37 PM - 12:07 AM
Action Rating:
Good Action 3/5
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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