Water Temperature of the Santiam River in Jefferson, OR

Current Water Temperature

63.7°F

Measurement Time: Monday, June 15, 2026, 2:30 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

80.1°F
Sunny
Sunny
78.7°F
83.7°F
35%
NNE 2.7 mph
3.1 mph
84.9°F
48.7°F
0 in
0%
9 mi
1018 mbar
4.6

Five Day Weather Forecast

Sunny
Mon
H: 101°F
L: 62°F
Sunny
Tue
H: 82°F
L: 51°F
Sunny
Wed
H: 79°F
L: 44°F
Sunny
Thu
H: 82°F
L: 48°F
Sunny
Fri
H: 86°F
L: 52°F

Air Quality

AQI: 1 - Good
PM2.5: 8.6 μg/m3
PM10: 10.3 μg/m3
Carbon Monoxide: 153 μg/m3
Nitrogen Dioxide: 3 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 93 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:12 PM
Sunset: 9:00 PM
Daylight: 15 hrs 34 mins
Moonrise: 5:32 AM
Moon Transit: 2:00 PM
Moonset: 10:23 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

9:27 PM - 11:57 PM
1:30 PM - 4:00 PM

Minor Periods

9:53 PM - 11:23 PM
5:02 AM - 6:32 AM

Action Rating: 5 out of 5

Fire Weather Watch issued June 14 at 10:01PM MDT until June 16 at 9:00PM MDT by NWS Grand Junction CO

Effective: Sun June 14, 2026, 9:01 PM
Expires: Mon June 15, 2026, 1:00 PM

The National Weather Service in Grand Junction has issued a Fire Weather Watch for gusty winds, low relative humidity and dry fuels, which is in effect from Tuesday afternoon through Tuesday evening. * AFFECTED AREA...In Colorado, Fire Weather Zone 200 Little Snake Forecast Area, Fire Weather Zone 207 Southwest Colorado Lower Forecast Area, Fire Weather Zone 293 Gunnison Basin Forecast Area and Fire Weather Zone 294 Southwest Colorado Upper West Forecast Area. In Utah, Fire Weather Zone 487 Book Cliffs. * TIMING...From Tuesday afternoon through Tuesday evening. * WINDS...West 10 to 20 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...7 to 12 percent. * IMPACTS...Fires will catch and spread quickly. Exercise extreme caution with any outdoor burning.

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Heat Advisory issued June 14 at 9:41PM PDT until June 16 at 11:00PM PDT by NWS Portland OR

Effective: Sun June 14, 2026, 9:41 PM
Expires: Mon June 15, 2026, 9:45 AM

* WHAT...Temperatures of 93 to 98 degrees F expected. * WHERE...Central and Southern Willamette Valley, Northern and Central Coast Range Valleys and Mountains of Oregon, Foothills of the Northern and Central Oregon Cascades, Central Columbia River Gorge and the Hood River Valley, Willapa Hills and Adjacent River Valleys of Pacific and Wahkiakum Counties, Lower Columbia River and Cowlitz River Valleys, Outer Southeast Portland Metro, West Columbia River Gorge of Oregon above 500 ft, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...Until 11 PM PDT Tuesday. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Monday will be the hottest day of the week with temperatures cooling down on Tuesday. Overnight temperatures will remain elevated tonight into Monday morning, and Monday night into Tuesday morning. Night time temperatures ranging from 60 to 65 degrees F will lead to limited overnight relief. There is currently a 10-20% chance that night time temperatures remain above 70 degrees F tonight into Monday morning across the Coast Range and westernmost parts of the Central and Southern Willamette Valley which would lead to poor overnight relief.

Drink plenty of fluids, stay in a cool place during the heat of the day, stay out of the sunshine, and check up on relatives and neighbors. For those without air conditioning, use fans to keep air moving. Keeps windows closed during the day and open at night, unless air quality is degraded due to wildfire smoke. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. For sheltering information and other human services, dial 2 1 1 during business hours or visit 211info.org in Oregon or wa211.org in Washington.


Extreme Heat Warning issued June 14 at 9:41PM PDT until June 16 at 11:00PM PDT by NWS Portland OR

Effective: Sun June 14, 2026, 9:41 PM
Expires: Mon June 15, 2026, 9:45 AM

* WHAT...Dangerously hot conditions with temperatures of 95 to 100 degrees F expected. * WHERE...Portland Metro Lowlands, Western Columbia River Gorge, Portland West Hills and Chehalem Mountain, Inner Vancouver Metro, and East Clark County Lowlands. * WHEN...Until 11 PM PDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Monday will be the hottest day of the week with temperatures cooling down on Tuesday. Overnight temperatures will remain elevated tonight into Monday morning, and Monday night into Tuesday morning. Night time temperatures ranging from 63 to 67 degrees F will lead to poor overnight relief. There is currently a 10-20% chance that night time temperatures remain above 70 degrees F tonight into Monday morning, and a 1-2% chance Monday night into Tuesday morning.

Drink plenty of fluids, stay in a cool place during the heat of the day, stay out of the sunshine, and check up on relatives and neighbors. For those without air conditioning, use fans to keep air moving. Keeps windows closed during the day and open at night, unless air quality is degraded due to wildfire smoke. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Stay cool, stay hydrated, stay informed. Monitor the latest forecasts and warnings for updates. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.


Heat Advisory issued June 15 at 7:40AM PDT until June 16 at 12:00AM PDT by NWS Portland OR

Effective: Mon June 15, 2026, 7:40 AM
Expires: Tue June 16, 2026, 12:00 AM

* WHAT...Temperatures of 93 to 98 degrees F expected. * WHERE...Central and Southern Willamette Valley, Northern and Central Coast Range Valleys and Mountains of Oregon, Foothills of the Northern and Central Oregon Cascades, Central Columbia River Gorge and the Hood River Valley, Willapa Hills and Adjacent River Valleys of Pacific and Wahkiakum Counties, Lower Columbia River and Cowlitz River Valleys, Outer Southeast Portland Metro, West Columbia River Gorge of Oregon above 500 ft, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...Until midnight PDT tonight. * IMPACTS...Hot temperatures may cause heat illnesses. * ADDITIONAL DETAILS...Today will be the hottest day of the week with temperatures cooling down on Tuesday.

Drink plenty of fluids, stay in a cool place during the heat of the day, stay out of the sunshine, and check up on relatives and neighbors. For those without air conditioning, use fans to keep air moving. Keeps windows closed during the day and open at night, unless air quality is degraded due to wildfire smoke. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. For sheltering information and other human services, dial 2 1 1 during business hours or visit 211info.org in Oregon or wa211.org in Washington.


Extreme Heat Warning issued June 15 at 7:40AM PDT until June 16 at 12:00AM PDT by NWS Portland OR

Effective: Mon June 15, 2026, 7:40 AM
Expires: Tue June 16, 2026, 12:00 AM

* WHAT...Dangerously hot conditions with temperatures of 95 to 100 degrees F expected. * WHERE...Portland Metro Lowlands, Western Columbia River Gorge, Portland West Hills and Chehalem Mountain, Inner Vancouver Metro, and East Clark County Lowlands. * WHEN...Until midnight PDT tonight. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS...Today will be the hottest day of the week with temperatures cooling down on Tuesday.

Drink plenty of fluids, stay in a cool place during the heat of the day, stay out of the sunshine, and check up on relatives and neighbors. For those without air conditioning, use fans to keep air moving. Keeps windows closed during the day and open at night, unless air quality is degraded due to wildfire smoke. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Stay cool, stay hydrated, stay informed. Monitor the latest forecasts and warnings for updates. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.


Monday, June 15, 2026

Weather Forecast

Sunny
100.8°F
62.3°F
80.8°F
38%
0 in
1%
0%
6.3 mph
8.3


Air Quality

AQI: 1 - Good
PM2.5: 6.73 μg/m3
PM10: 8.57 μg/m3
Carbon Monoxide: 132.38 μg/m3
Nitrogen Dioxide: 3.95 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 77.25 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:12 PM
Sunset: 9:00 PM
Daylight: 15 hrs 34 mins
Moonrise: 5:32 AM
Moon Transit: 2:00 PM
Moonset: 10:23 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

9:27 PM - 11:57 PM
1:30 PM - 4:00 PM

Minor Periods

9:53 PM - 11:23 PM
5:02 AM - 6:32 AM

Action Rating: 5 out of 5

Tuesday, June 16, 2026

Weather Forecast

Sunny
82.4°F
51°F
65.9°F
46%
0 in
1%
0%
11.9 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 4.48 μg/m3
PM10: 6.77 μg/m3
Carbon Monoxide: 114.33 μg/m3
Nitrogen Dioxide: 2.86 μg/m3
Sulphur Dioxide: 0.39 μg/m3
Ozone: 46.83 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:13 PM
Sunset: 9:00 PM
Daylight: 15 hrs 35 mins
Moonrise: 6:50 AM
Moon Transit: 3:05 PM
Moonset: 11:08 PM
Moon Phase: New
Moon Illumination: 1.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:35 PM - 5:05 PM

Minor Periods

12:00 AM - 12:00 AM
6:20 AM - 7:50 AM

Action Rating: 3 out of 5

Wednesday, June 17, 2026

Weather Forecast

Sunny
78.7°F
43.8°F
61°F
63%
0 in
4%
0%
10.7 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 3.85 μg/m3
PM10: 5.59 μg/m3
Carbon Monoxide: 104.96 μg/m3
Nitrogen Dioxide: 1.56 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 58.58 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:13 PM
Sunset: 9:01 PM
Daylight: 15 hrs 35 mins
Moonrise: 8:13 AM
Moon Transit: 4:05 PM
Moonset: 12:08 AM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:35 PM - 6:05 PM

Minor Periods

7:43 AM - 9:13 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, June 18, 2026

Weather Forecast

Sunny
82.2°F
48°F
64.5°F
62%
0 in
4%
0%
6.7 mph
8.5


Air Quality

AQI: 1 - Good
PM2.5: 5.21 μg/m3
PM10: 6.54 μg/m3
Carbon Monoxide: 120.58 μg/m3
Nitrogen Dioxide: 3.14 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 72.75 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:13 PM
Sunset: 9:01 PM
Daylight: 15 hrs 35 mins
Moonrise: 9:35 AM
Moon Transit: 5:00 PM
Moonset: 12:42 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
4:30 PM - 7:00 PM

Minor Periods

9:05 AM - 10:35 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, June 19, 2026

Weather Forecast

Sunny
85.7°F
51.5°F
66.5°F
64%
0 in
4%
0%
10.3 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 7.05 μg/m3
PM10: 8.82 μg/m3
Carbon Monoxide: 159.33 μg/m3
Nitrogen Dioxide: 7.03 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 46 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 1:13 PM
Sunset: 9:01 PM
Daylight: 15 hrs 35 mins
Moonrise: 10:53 AM
Moon Transit: 5:48 PM
Moonset: 12:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.3%

Best Times for Fishing or Hunting

Major Periods

12:21 AM - 2:51 AM
5:18 PM - 7:48 PM

Minor Periods

10:23 AM - 11:53 AM
12:00 AM - 12:00 AM

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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