Water Temperature of the Long Tom River in Monroe, OR

Current Water Temperature

74.5°F

Measurement Time: Tuesday, August 19, 2025, 5:50 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 / 87 meters

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 (31.0 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 (38.0 mi)

Weather for Monroe, Oregon

Current Weather

63°F
Partly cloudy
Conditions: Partly cloudy
Humidity: 81%
Feels Like: 63°F
Wind: W 2.9 mph
Wind Gusts: 6.1 mph
Pressure: 30.19 in
Precipitation: 0 in
Cloud Cover: 50%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Wed
H: 83°F
L: 56°F
Sunny
Thu
H: 90°F
L: 52°F
Sunny
Fri
H: 100°F
L: 59°F
Sunny
Sat
H: 98°F
L: 57°F
Sunny
Sun
H: 93°F
L: 57°F

Air Quality

PM2.5: 8.7 μg/m3
PM10: 10.73 μg/m3
Carbon Monoxide: 255.3 μg/m3
Nitrogen Dioxide: 13.51 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 31 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:16 PM
Sunset: 8:10 PM
Daylight: 13 hrs 47 mins
Moonrise: 3:05 AM
Moon Transit: 11:16 AM
Moonset: 7:13 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

6:37 PM - 9:07 PM
10:46 AM - 1:16 PM

Minor Periods

6:43 PM - 8:13 PM
2:35 AM - 4:05 AM

Action Rating: 3 out of 5

Fire Weather Watch issued August 19 at 2:46PM PDT until August 21 at 9:00PM PDT by NWS Portland OR

Effective: Tue August 19, 2025, 2:46 PM
Expires: Wed August 20, 2025, 6:00 AM

The National Weather Service in Portland has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Thursday afternoon through Thursday evening. * AFFECTED AREA...In Oregon, Fire Weather Zone 685 Southern Willamette Valley. * WINDS...North 10-15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...As low as 15-25 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 Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued August 19 at 2:46PM PDT until August 21 at 9:00PM PDT by NWS Portland OR

Effective: Tue August 19, 2025, 2:46 PM
Expires: Wed August 20, 2025, 6:00 AM

The National Weather Service in Portland has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Thursday afternoon through Thursday evening. * AFFECTED AREA...In Oregon, Fire Weather Zone 685 Southern Willamette Valley. * WINDS...North 10-15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...As low as 15-25 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 Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued August 19 at 2:46PM PDT until August 21 at 9:00PM PDT by NWS Portland OR

Effective: Tue August 19, 2025, 2:46 PM
Expires: Wed August 20, 2025, 6:00 AM

The National Weather Service in Portland has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Thursday afternoon through Thursday evening. * AFFECTED AREA...In Oregon, Fire Weather Zone 685 Southern Willamette Valley. * WINDS...North 10-15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...As low as 15-25 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 Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued August 19 at 2:46PM PDT until August 21 at 9:00PM PDT by NWS Portland OR

Effective: Tue August 19, 2025, 2:46 PM
Expires: Wed August 20, 2025, 6:00 AM

The National Weather Service in Portland has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Thursday afternoon through Thursday evening. * AFFECTED AREA...In Oregon, Fire Weather Zone 685 Southern Willamette Valley. * WINDS...North 10-15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...As low as 15-25 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 Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.


Fire Weather Watch issued August 19 at 2:46PM PDT until August 21 at 9:00PM PDT by NWS Portland OR

Effective: Tue August 19, 2025, 2:46 PM
Expires: Wed August 20, 2025, 6:00 AM

The National Weather Service in Portland has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Thursday afternoon through Thursday evening. * AFFECTED AREA...In Oregon, Fire Weather Zone 685 Southern Willamette Valley. * WINDS...North 10-15 mph with gusts up to 25 mph. * RELATIVE HUMIDITY...As low as 15-25 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 Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.
Wednesday, August 20, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 69°F
Average Humidity: 67%
Chance of Rain: 0%
Wind: 8.9 mph
UV Index: 1.9

Air Quality

AQI: 1 - Good
PM2.5: 6.19 μg/m3
PM10: 7.67 μg/m3
Carbon Monoxide: 256.85 μg/m3
Nitrogen Dioxide: 7.98 μg/m3
Sulphur Dioxide: 1.26 μg/m3
Ozone: 52.84 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:16 PM
Sunset: 8:10 PM
Daylight: 13 hrs 47 mins
Moonrise: 3:05 AM
Moon Transit: 11:16 AM
Moonset: 7:13 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

6:37 PM - 9:07 PM
10:46 AM - 1:16 PM

Minor Periods

6:43 PM - 8:13 PM
2:35 AM - 4:05 AM

Action Rating: 3 out of 5

Thursday, August 21, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 70.1°F
Average Humidity: 52%
Chance of Rain: 0%
Wind: 11 mph
UV Index: 1.9

Air Quality

AQI: 1 - Good
PM2.5: 5.96 μg/m3
PM10: 6.36 μg/m3
Carbon Monoxide: 257.45 μg/m3
Nitrogen Dioxide: 7.92 μg/m3
Sulphur Dioxide: 2.21 μg/m3
Ozone: 62.24 μg/m3

Astronomical

Sunrise: 6:24 AM
Sun Transit: 1:16 PM
Sunset: 8:08 PM
Daylight: 13 hrs 44 mins
Moonrise: 4:22 AM
Moon Transit: 12:09 AM
Moonset: 7:43 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

7:30 PM - 10:00 PM
11:39 AM - 2:09 PM

Minor Periods

7:13 PM - 8:43 PM
3:52 AM - 5:22 AM

Action Rating: 2 out of 5

Friday, August 22, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 78.1°F
Average Humidity: 41%
Chance of Rain: 0%
Wind: 6.3 mph
UV Index: 2

Air Quality

AQI: 1 - Good
PM2.5: 11.6 μg/m3
PM10: 11.77 μg/m3
Carbon Monoxide: 286.31 μg/m3
Nitrogen Dioxide: 10.06 μg/m3
Sulphur Dioxide: 3.04 μg/m3
Ozone: 91.04 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 1:15 PM
Sunset: 8:06 PM
Daylight: 13 hrs 41 mins
Moonrise: 5:37 AM
Moon Transit: 1:00 PM
Moonset: 8:06 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

8:17 PM - 10:47 PM
12:30 AM - 3:00 PM

Minor Periods

7:36 PM - 9:06 PM
5:07 AM - 6:37 AM

Action Rating: 6 out of 5

Saturday, August 23, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 74.1°F
Average Humidity: 48%
Chance of Rain: 0%
Wind: 6.5 mph
UV Index: 2

Air Quality

AQI: 1 - Good
PM2.5: 11.68 μg/m3
PM10: 12.68 μg/m3
Carbon Monoxide: 339.4 μg/m3
Nitrogen Dioxide: 11.77 μg/m3
Sulphur Dioxide: 2.31 μg/m3
Ozone: 75.23 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:15 PM
Sunset: 8:04 PM
Daylight: 13 hrs 38 mins
Moonrise: 6:49 AM
Moon Transit: 1:44 PM
Moonset: 8:26 PM
Moon Phase: New
Moon Illumination: 1.4%

Best Times for Fishing or Hunting

Major Periods

9:01 PM - 11:31 PM
1:14 PM - 3:44 PM

Minor Periods

7:56 PM - 9:26 PM
6:19 AM - 7:49 AM

Action Rating: 5 out of 5

Sunday, August 24, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 68°F
Average Humidity: 61%
Chance of Rain: 0%
Wind: 8.1 mph
UV Index: 0

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 1:15 PM
Sunset: 8:03 PM
Daylight: 13 hrs 35 mins
Moonrise: 7:58 AM
Moon Transit: 2:27 PM
Moonset: 8:44 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:57 PM - 4:27 PM

Minor Periods

8:14 PM - 9:44 PM
7:28 AM - 8:58 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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