Water Temperature of the Santiam River in Jefferson, OR

Current Water Temperature

68.0°F

Measurement Time: Friday, July 31, 2026, 9:30 AM PDT

Temperature Locations

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Local Points of Interest

Santium River Rest Area

Santiam River

Station Name: SANTIAM RIVER NEAR JEFFERSON, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 203 feet

Nearest Address:
14500–14566 I-5 N
Jefferson, OR 97352
Marion County

GPS Coordinates: 44.7387325, -123.0498164

Nearby Water Temperatures

North Santiam River, Jefferson, OR (4.3 mi)
Willamette River , Albany, OR (7.5 mi)
North Santiam River, Mehama, OR (18.5 mi)
South Santiam River, Waterloo, OR (20 mi)
Little North Santiam River, Lyons, OR (23.4 mi)
South Santiam River, Sweet Home, OR (28.7 mi)
Middle Santiam River, Foster, OR (31.7 mi)
Long Tom River, Monroe, OR (31.8 mi)
Willamette River , Harrisburg, OR (32.9 mi)
Quartzville Creek, Cascadia, OR (33.2 mi)
South Santiam River, Cascadia, OR (36.2 mi)
Middle Santiam River, Cascadia, OR (36.7 mi)
North Santiam River, Niagara, OR (36.9 mi)
Willamette River, West Linn, OR (38 mi)
Detroit Lake, Detroit, OR (39.5 mi)

Weather for Jefferson, Oregon

Current Weather

91.2°F
Sunny
Sunny
85.1°F
88.2°F
23%
W 10.3 mph
11.8 mph
91.2°F
48.5°F
0 in
0%
6 mi
1015 mbar
3.1

Five Day Weather Forecast

Sunny
Fri
H: 92°F
L: 54°F
Sunny
Sat
H: 74°F
L: 51°F
Sunny
Sun
H: 80°F
L: 46°F
Sunny
Mon
H: 86°F
L: 46°F
Sunny
Tue
H: 97°F
L: 50°F

Air Quality

AQI: 1 - Good
PM2.5: 3.7 μg/m3
PM10: 4.9 μg/m3
Carbon Monoxide: 93 μg/m3
Nitrogen Dioxide: 0.6 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 71 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 1:18 PM
Sunset: 8:39 PM
Daylight: 14 hrs 42 mins
Moonrise: 9:44 PM
Moon Transit: 2:39 AM
Moonset: 8:04 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

2:09 AM - 4:39 AM
9:58 AM - 12:28 AM

Minor Periods

9:14 PM - 10:44 PM
7:34 AM - 9:04 AM

Action Rating: 3 out of 5

Red Flag Warning issued July 31 at 12:56PM PDT until August 1 at 11:00PM PDT by NWS Pendleton OR

Effective: Fri July 31, 2026, 12:56 PM
Expires: Fri July 31, 2026, 11:00 PM

...PARTICULARLY DANGEROUS SITUATION (PDS) RED FLAG IN EFFECT 2PM UNTIL 8PM SATURDAY FOR THE FOLLOWING AREAS: KITTITAS VALLEY (ZONE 690) - LOWER COLUMBIA BASIN OF OREGON AND WASHINGTON (ZONE 691) - NORTHERN BLUE MOUNTAINS OF OREGON AND WASHINGTON (ZONE 692) - CANYON GRASSLANDS OF WALLOWA COUNTY AND SOUTHEAST WASHINGTON GRANDE RONDE VALLEY (ZONE 693) - GRANDE RONDE VALLEY OF OREGON (ZONE 694) - EAGLE CAP WILDERNESS (ZONE 695) - JOHN DAY VALLEY (ZONE 696) - AND CENTRAL MOUNTAINS OF OREGON (ZONE 700)... .A strong cold front will pass through the Pacific and Inland Northwest on Saturday. Very warm, dry, and windy conditions will result, leading to extreme fire weather concerns and the potential for rapid fire spread for any new or ongoing fires. The National Weather Service in Pendleton has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 11 PM PDT Saturday. * AFFECTED AREA...Fire Weather Zone 702 East Slopes of the Mt. Hood National Forest. * TIMING...From 11 AM to 11 PM PDT Saturday. * WINDS...West 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 30 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.


Air Quality Alert issued July 31 at 1:08PM PDT by NWS Portland OR

Effective: Fri July 31, 2026, 1:08 PM
Expires: Sat August 1, 2026, 12:00 PM

The Oregon Department of Environmental Quality has issued an Air Quality Advisory for eastern Clackamas County, which is IN EFFECT UNTIL NOON PDT MONDAY. An Air Quality Advisory for Smoke has been issued. Wildfires burning in the region combined with forecasted conditions will cause air quality to reach unhealthy levels at times through noon PDT Monday. Pollutants in smoke can cause burning eyes, runny nose, aggravate heart and lung diseases, and aggravate other serious health problems. Limit outdoor activities and keep children indoors if it is smoky. Please follow medical advice if you have a heart or lung condition. More information about air quality can be found at: www.oregon.gov/DEQ


Friday, July 31, 2026

Weather Forecast

Sunny
91.8°F
53.6°F
71.7°F
50%
0 in
2%
0%
10.5 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 5.08 μg/m3
PM10: 6.8 μg/m3
Carbon Monoxide: 106.46 μg/m3
Nitrogen Dioxide: 3.14 μg/m3
Sulphur Dioxide: 0.61 μg/m3
Ozone: 49.42 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 1:18 PM
Sunset: 8:39 PM
Daylight: 14 hrs 42 mins
Moonrise: 9:44 PM
Moon Transit: 2:39 AM
Moonset: 8:04 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

2:09 AM - 4:39 AM
9:58 AM - 12:28 AM

Minor Periods

9:14 PM - 10:44 PM
7:34 AM - 9:04 AM

Action Rating: 3 out of 5

Saturday, August 1, 2026

Weather Forecast

Sunny
74.1°F
51.1°F
63.6°F
70%
0 in
17%
0%
11 mph
5.4


Air Quality

AQI: 1 - Good
PM2.5: 4.05 μg/m3
PM10: 5.92 μg/m3
Carbon Monoxide: 92.88 μg/m3
Nitrogen Dioxide: 1.42 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 40.75 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:18 PM
Sunset: 8:38 PM
Daylight: 14 hrs 40 mins
Moonrise: 10:02 PM
Moon Transit: 3:22 AM
Moonset: 9:13 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

2:52 AM - 5:22 AM
10:41 AM - 1:11 PM

Minor Periods

9:32 PM - 11:02 PM
8:43 AM - 10:13 AM

Action Rating: 2 out of 5

Sunday, August 2, 2026

Weather Forecast

Sunny
79.7°F
45.9°F
61.6°F
63%
0 in
4%
0%
11.2 mph
7.8


Air Quality

AQI: 1 - Good
PM2.5: 5.19 μg/m3
PM10: 7.77 μg/m3
Carbon Monoxide: 91.5 μg/m3
Nitrogen Dioxide: 2.28 μg/m3
Sulphur Dioxide: 0.72 μg/m3
Ozone: 46.75 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:18 PM
Sunset: 8:37 PM
Daylight: 14 hrs 37 mins
Moonrise: 10:20 PM
Moon Transit: 3:50 PM
Moonset: 10:22 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

11:24 AM - 1:54 PM
3:20 PM - 5:50 PM

Minor Periods

9:50 PM - 11:20 PM
9:52 AM - 11:22 AM

Action Rating: 2 out of 5

Monday, August 3, 2026

Weather Forecast

Sunny
85.6°F
45.8°F
65.3°F
54%
0 in
2%
0%
12.8 mph
7.5


Air Quality

AQI: 1 - Good
PM2.5: 3.87 μg/m3
PM10: 4.87 μg/m3
Carbon Monoxide: 117.17 μg/m3
Nitrogen Dioxide: 2.64 μg/m3
Sulphur Dioxide: 0.89 μg/m3
Ozone: 61.88 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:18 PM
Sunset: 8:36 PM
Daylight: 14 hrs 35 mins
Moonrise: 10:40 PM
Moon Transit: 12:00 AM
Moonset: 11:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:09 AM - 2:39 PM

Minor Periods

10:10 PM - 11:40 PM
11:02 AM - 12:32 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Sunny
97.4°F
50.4°F
72.4°F
44%
0 in
1%
0%
9.6 mph
5.6


Air Quality

AQI: 1 - Good
PM2.5: 5.47 μg/m3
PM10: 6.92 μg/m3
Carbon Monoxide: 128.83 μg/m3
Nitrogen Dioxide: 4.8 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 45.17 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 1:18 PM
Sunset: 8:34 PM
Daylight: 14 hrs 32 mins
Moonrise: 11:02 PM
Moon Transit: 5:35 AM
Moonset: 12:46 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

5:05 AM - 7:35 AM
12:55 AM - 3:25 PM

Minor Periods

12:00 AM - 12:00 AM
12:16 AM - 1:46 PM

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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