Water Temperature of the South Santiam River in Waterloo, OR

Current Water Temperature

45.1°F

Measurement Time: Saturday, February 14, 2026, 4:00 AM PST

Temperature Locations

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Local Points of Interest

Waterloo Falls; Lebanon, OR

South Santiam River

Station Name: SOUTH SANTIAM RIVER AT WATERLOO, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 472 feet

Nearest Address:
31187 1st St
Waterloo, OR 97355
Linn County

GPS Coordinates: 44.4984564, -122.8234214

Nearby Water Temperatures

South Santiam River, Sweet Home, OR (8.9 mi)
Middle Santiam River, Foster, OR (13.9 mi)
North Santiam River, Jefferson, OR (16.2 mi)
Willamette River , Albany, OR (17 mi)
South Santiam River, Cascadia, OR (17.7 mi)
Quartzville Creek, Cascadia, OR (19.3 mi)
Santiam River, Jefferson, OR (20 mi)
North Santiam River, Mehama, OR (20.6 mi)
Middle Santiam River, Cascadia, OR (22.3 mi)
Willamette River , Harrisburg, OR (23.4 mi)
Little North Santiam River, Lyons, OR (23.5 mi)
Long Tom River, Monroe, OR (26.6 mi)
McKenzie River, Eugene, OR (28.8 mi)
Camp Creek, Springfield, OR (29.7 mi)
McKenzie River, Walterville, OR (29.7 mi)

Weather for Waterloo, Oregon

Current Weather

45°F
Light rain
Light rain
42.8°F
46.3°F
97%
N 4.3 mph
5.2 mph
43.6°F
41.8°F
0.01 in
100%
9 mi
1018 mbar
0.2

Five Day Weather Forecast

Moderate rain
Sat
H: 47°F
L: 41°F
Fog
Sun
H: 45°F
L: 32°F
Moderate rain
Mon
H: 42°F
L: 34°F
Patchy rain nearby
Tue
H: 45°F
L: 28°F
Partly Cloudy
Wed
H: 47°F
L: 26°F

Air Quality

AQI: 1 - Good
PM2.5: 4.05 μg/m3
PM10: 4.65 μg/m3
Carbon Monoxide: 206.85 μg/m3
Nitrogen Dioxide: 10.95 μg/m3
Sulphur Dioxide: 2.15 μg/m3
Ozone: 44 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 12:25 AM
Sunset: 5:39 PM
Daylight: 10 hrs 27 mins
Moonrise: 6:02 AM
Moon Transit: 10:17 AM
Moonset: 2:39 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

5:41 PM - 8:11 PM
9:47 AM - 12:17 AM

Minor Periods

2:09 PM - 3:39 PM
5:32 AM - 7:02 AM

Action Rating: 4 out of 5

Beach Hazards Statement issued February 14 at 2:18AM PST until February 15 at 10:00PM PST by NWS Portland OR

Effective: Sat February 14, 2026, 2:18 AM
Expires: Sun February 15, 2026, 4:00 AM

* WHAT...Sneaker waves possible. * WHERE...North and Central Coast of Oregon, and South Washington Coast. * WHEN...Through Sunday evening. * 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...Caution should be used when in or near the water, especially those who will be razor clamming. Keep children and pets away from the surf zone. Keep off of jetties, rocks and logs near the surf zone. If you see someone swept into the sea do not swim in after them. Call 911 and keep an eye on them until help arrives.

Remain out of the water to avoid hazardous swimming conditions.
Saturday, February 14, 2026

Weather Forecast

Moderate rain
47.1°F
40.6°F
44.1°F
93%
0.21 in
86%
0%
6 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 5.78 μg/m3
PM10: 7.05 μg/m3
Carbon Monoxide: 176.61 μg/m3
Nitrogen Dioxide: 6.38 μg/m3
Sulphur Dioxide: 1.53 μg/m3
Ozone: 50 μg/m3

Astronomical

Sunrise: 7:12 AM
Sun Transit: 12:25 AM
Sunset: 5:39 PM
Daylight: 10 hrs 27 mins
Moonrise: 6:02 AM
Moon Transit: 10:17 AM
Moonset: 2:39 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

5:41 PM - 8:11 PM
9:47 AM - 12:17 AM

Minor Periods

2:09 PM - 3:39 PM
5:32 AM - 7:02 AM

Action Rating: 4 out of 5

Sunday, February 15, 2026

Weather Forecast

Fog
44.8°F
32.1°F
37°F
94%
0 in
0%
0%
4.3 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 4.54 μg/m3
PM10: 5.14 μg/m3
Carbon Monoxide: 202.77 μg/m3
Nitrogen Dioxide: 8.25 μg/m3
Sulphur Dioxide: 1.91 μg/m3
Ozone: 39.12 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:25 AM
Sunset: 5:40 PM
Daylight: 10 hrs 29 mins
Moonrise: 6:34 AM
Moon Transit: 11:07 AM
Moonset: 3:50 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

6:30 PM - 9:00 PM
10:37 AM - 1:07 PM

Minor Periods

3:20 PM - 4:50 PM
6:04 AM - 7:34 AM

Action Rating: 3 out of 5

Monday, February 16, 2026

Weather Forecast

Moderate rain
41.5°F
33.6°F
37.3°F
95%
0.47 in
85%
0%
9.4 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 6.36 μg/m3
PM10: 6.94 μg/m3
Carbon Monoxide: 235.85 μg/m3
Nitrogen Dioxide: 11.57 μg/m3
Sulphur Dioxide: 1.92 μg/m3
Ozone: 43.76 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:25 AM
Sunset: 5:42 PM
Daylight: 10 hrs 32 mins
Moonrise: 7:00 AM
Moon Transit: 11:56 AM
Moonset: 5:03 PM
Moon Phase: New
Moon Illumination: 0.9%

Best Times for Fishing or Hunting

Major Periods

7:18 PM - 9:48 PM
11:26 AM - 1:56 PM

Minor Periods

4:33 PM - 6:03 PM
6:30 AM - 8:00 AM

Action Rating: 4 out of 5

Tuesday, February 17, 2026

Weather Forecast

Patchy rain nearby
44.5°F
27.8°F
37.8°F
91%
0.13 in
89%
11%
10.7 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 2.19 μg/m3
PM10: 2.46 μg/m3
Carbon Monoxide: 175.83 μg/m3
Nitrogen Dioxide: 4.35 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 66.76 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:25 AM
Sunset: 5:43 PM
Daylight: 10 hrs 35 mins
Moonrise: 7:21 AM
Moon Transit: 12:42 AM
Moonset: 6:16 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

8:04 PM - 10:34 PM
12:12 AM - 2:42 PM

Minor Periods

5:46 PM - 7:16 PM
6:51 AM - 8:21 AM

Action Rating: 5 out of 5

Wednesday, February 18, 2026

Weather Forecast

Partly Cloudy
47.2°F
25.5°F
32.4°F
84%
0 in
0%
0%
4.9 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 4.44 μg/m3
PM10: 5.03 μg/m3
Carbon Monoxide: 231.26 μg/m3
Nitrogen Dioxide: 9.45 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 61.46 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:25 AM
Sunset: 5:44 PM
Daylight: 10 hrs 38 mins
Moonrise: 7:41 AM
Moon Transit: 1:28 PM
Moonset: 7:28 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:58 AM - 3:28 PM

Minor Periods

6:58 PM - 8:28 PM
7:11 AM - 8:41 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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