Water Temperature of the Long Tom River in Monroe, OR

Current Water Temperature

71.2°F

Measurement Time: Sunday, August 2, 2026, 9:45 PM PDT

Temperature Locations

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Long Tom River

Station Name: LONG TOM RIVER AT MONROE, OR
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 285 feet

Nearest Address:
475 S Fifth St
Monroe, OR 97456
Benton County

GPS Coordinates: 44.31290047, -123.2964859

Nearby Water Temperatures

Willamette River , Harrisburg, OR (6.7 mi)
Long Tom River, Alvadore, OR (13.1 mi)
Willamette River , Eugene, OR (17.7 mi)
McKenzie River, Eugene, OR (18.5 mi)
McKenzie River, Springfield, OR (23.4 mi)
Willamette River , Albany, OR (24.4 mi)
Cedar Creek, Thurston, OR (25.6 mi)
Camp Creek, Springfield, OR (26.4 mi)
South Santiam River, Waterloo, OR (26.6 mi)
South Santiam River, Sweet Home, OR (30.8 mi)
McKenzie River, Walterville, OR (31 mi)
North Santiam River, Jefferson, OR (31.6 mi)
Santiam River, Jefferson, OR (31.8 mi)
Middle Fork Willamette River, Fall Creek, OR (34.1 mi)
Middle Santiam River, Foster, OR (38 mi)

Weather for Monroe, Oregon

Current Weather

54°F
Clear
Clear
50.9°F
54°F
69%
N 4.9 mph
10.3 mph
53°F
43.9°F
0 in
0%
6 mi
1021 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 86°F
L: 53°F
Smoky haze
Tue
H: 97°F
L: 51°F
Smoky haze
Wed
H: 100°F
L: 57°F
Sunny
Thu
H: 99°F
L: 56°F
Sunny
Fri
H: 96°F
L: 49°F

Air Quality

AQI: 1 - Good
PM2.5: 3.2 μg/m3
PM10: 4.4 μg/m3
Carbon Monoxide: 87 μg/m3
Nitrogen Dioxide: 4.1 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 38 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:19 PM
Sunset: 8:35 PM
Daylight: 14 hrs 32 mins
Moonrise: 10:41 PM
Moon Transit: 12:00 AM
Moonset: 11:33 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:07 AM - 2:37 PM

Minor Periods

10:11 PM - 11:41 PM
11:03 AM - 12:33 AM

Action Rating: 2 out of 5

Red Flag Warning issued August 2 at 10:31AM PDT until August 3 at 8:00PM PDT by NWS Portland OR

Effective: Sun August 2, 2026, 10:31 AM
Expires: Mon August 3, 2026, 12:00 PM

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED IN THE SOUTHERN WILLAMETTE VALLEY MONDAY AFTERNOON AND EVENING DUE TO DRY CONDITIONS AND NORTHERLY WINDS UP TO 25 MPH... ...CRITICAL FIRE WEATHER CONDITIONS POSSIBLE IN THE WESTERN COLUMBIA RIVER GORGE TUESDAY AFTERNOON AND EVENING DUE TO DRY CONDITIONS AND INCREASING EASTERLY WINDS... The National Weather Service in Portland has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 1 PM to 8 PM PDT Monday. * AFFECTED AREA...In Oregon, Fire Weather Zone 685 Southern Willamette Valley. * WINDS...North 10 to 15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...As low as 20 to 25 percent. * IMPACTS...Conditions may be favorable for rapid fire spread which may threaten life and property. Use extra caution with potential ignition sources, especially in grassy areas. 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 the above conditions can contribute to extreme fire behavior.
Monday, August 3, 2026

Weather Forecast

Sunny
86.2°F
52.9°F
68.2°F
47%
0 in
1%
0%
11.6 mph
6.8


Air Quality

AQI: 1 - Good
PM2.5: 10.19 μg/m3
PM10: 11.16 μg/m3
Carbon Monoxide: 135.92 μg/m3
Nitrogen Dioxide: 2.83 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 79.67 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 1:19 PM
Sunset: 8:35 PM
Daylight: 14 hrs 32 mins
Moonrise: 10:41 PM
Moon Transit: 12:00 AM
Moonset: 11:33 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:07 AM - 2:37 PM

Minor Periods

10:11 PM - 11:41 PM
11:03 AM - 12:33 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Smoky haze
96.7°F
50.7°F
72.5°F
39%
0 in
1%
0%
8.9 mph
4.3


Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 46.78 μg/m3
PM10: 47.41 μg/m3
Carbon Monoxide: 305.13 μg/m3
Nitrogen Dioxide: 6.94 μg/m3
Sulphur Dioxide: 3.47 μg/m3
Ozone: 150.33 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:19 PM
Sunset: 8:34 PM
Daylight: 14 hrs 30 mins
Moonrise: 11:04 PM
Moon Transit: 5:36 AM
Moonset: 12:46 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

5:06 AM - 7:36 AM
12:54 AM - 3:24 PM

Minor Periods

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

Action Rating: 2 out of 5

Wednesday, August 5, 2026

Weather Forecast

Smoky haze
100.1°F
56.5°F
76.5°F
38%
0 in
1%
0%
6.9 mph
5.3


Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 55.32 μg/m3
PM10: 56.96 μg/m3
Carbon Monoxide: 363.58 μg/m3
Nitrogen Dioxide: 7.73 μg/m3
Sulphur Dioxide: 3.26 μg/m3
Ozone: 143.42 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:19 PM
Sunset: 8:33 PM
Daylight: 14 hrs 27 mins
Moonrise: 12:04 AM
Moon Transit: 6:25 AM
Moonset: 2:03 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:55 AM - 8:25 AM
1:45 PM - 4:15 PM

Minor Periods

1:33 PM - 3:03 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Thursday, August 6, 2026

Weather Forecast

Sunny
98.9°F
56.3°F
74.4°F
43%
0 in
1%
0%
8.7 mph
5.3


Air Quality

AQI: 2 - Moderate
PM2.5: 30.08 μg/m3
PM10: 33.69 μg/m3
Carbon Monoxide: 261.06 μg/m3
Nitrogen Dioxide: 3.59 μg/m3
Sulphur Dioxide: 1.67 μg/m3
Ozone: 95.21 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:19 PM
Sunset: 8:31 PM
Daylight: 14 hrs 25 mins
Moonrise: 12:32 AM
Moon Transit: 7:19 AM
Moonset: 3:21 PM
Moon Phase: Last Quarter
Moon Illumination: 32.3%

Best Times for Fishing or Hunting

Major Periods

6:49 AM - 9:19 AM
2:41 PM - 5:11 PM

Minor Periods

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

Action Rating: 2 out of 5

Friday, August 7, 2026

Weather Forecast

Sunny
95.6°F
49.2°F
70.6°F
49%
0 in
1%
0%
7.4 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 11.47 μg/m3
PM10: 14.83 μg/m3
Carbon Monoxide: 131.33 μg/m3
Nitrogen Dioxide: 6.15 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 39.17 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:18 PM
Sunset: 8:30 PM
Daylight: 14 hrs 22 mins
Moonrise: 12:09 AM
Moon Transit: 8:18 AM
Moonset: 4:39 PM
Moon Phase: Last Quarter
Moon Illumination: 22.2%

Best Times for Fishing or Hunting

Major Periods

7:48 AM - 10:18 AM
3:41 PM - 6:11 PM

Minor Periods

4:09 PM - 5:39 PM
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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