Water Temperature of the Similkameen River in Nighthawk, WA

Current Water Temperature

77.0°F

Measurement Time: Monday, August 25, 2025, 1:30 PM PDT

Temperature Locations

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Local Points of Interest

Ellemeham Wildlife Area

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Similkameen River

Station Name: SIMILKAMEEN RIVER NEAR NIGHTHAWK, WA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 1,165 feet / 355 meters

Nearest Address:
2672 Loomis Oroville Rd
Nighthawk, WA 98827
Okanogan County

GPS Coordinates: 48.98460109, -119.6184098

Nearby Water Temperatures

Osoyoos Lake, Oroville, WA (8.3 mi)
Okanogan River, Oroville, WA (9.7 mi)
Andrews Creek, Mazama, WA (26.4 mi)
Okanogan River, Malott, WA (48.8 mi)
Ruby Creek, Newhalem, WA (64.7 mi)
Columbia River, Bridgeport, WA (67.6 mi)
Big Beaver Creek, Diablo, WA (67.6 mi)
Columbia River, Azwell, WA (72.5 mi)
Skagit River, Newhalem, WA (77.1 mi)
Bacon Creek, Marblemount, WA (85.2 mi)
Cascade River, Marblemount, WA (87.8 mi)
Skagit River, Marblemount, WA (88.2 mi)
Sauk River, Concrete, WA (97.0 mi)
North Fork Nooksack River, Glacier, WA (101.1 mi)
Sauk River, Darrington, WA (101.7 mi)

Weather for Nighthawk, Washington

Current Weather

85.5°F
Clear
Conditions: Clear
Humidity: 30%
Feels Like: 82°F
Wind: NNE 3.8 mph
Wind Gusts: 8 mph
Pressure: 29.89 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Mon
H: 96°F
L: 60°F
Sunny
Tue
H: 96°F
L: 61°F
Cloudy
Wed
H: 93°F
L: 60°F
Partly Cloudy
Thu
H: 93°F
L: 63°F
Sunny
Fri
H: 88°F
L: 59°F

Air Quality

AQI: 2 - Moderate
PM2.5: 6.44 μg/m3
PM10: 7.17 μg/m3
Carbon Monoxide: 277.69 μg/m3
Nitrogen Dioxide: 10.85 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:00 PM
Sunset: 7:54 PM
Daylight: 13 hrs 48 mins
Moonrise: 8:51 AM
Moon Transit: 2:53 PM
Moonset: 8:42 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:23 PM - 4:53 PM

Minor Periods

8:12 PM - 9:42 PM
8:21 AM - 9:51 AM

Action Rating: 4 out of 5

Heat Advisory issued August 25 at 2:42PM PDT until August 27 at 9:00PM PDT by NWS Spokane WA

Effective: Mon August 25, 2025, 2:42 PM
Expires: Tue August 26, 2025, 3:00 PM

* WHAT...Hot temperatures. High temperatures 90 to 99 degrees for elevations below 3500 feet. High temperatures 80 to 89 degrees for elevations above 3500 feet * WHERE...Coeur d'Alene, Potlatch, Fruitland, Conconully, Rosalia, Colville, Cloverland Road, Pullman, Newport, Wauconda, Kamiah, Nezperce, Mountain Road, Winchester, Northport, Downtown Spokane, Genesee, Boulder Creek Road, Methow, Republic, Highway 20 Wauconda Summit, Oakesdale, Davenport, Metaline Falls, Ione, Loup Loup Pass, Chesaw Road, Airway Heights, Mazama, Chewelah, Uniontown, Anatone, Flowery Trail Road, Cheney, Metaline, Tiger, Sherman Pass, Rockford, Twisp, Inchelium, Fairfield, Kettle Falls, Craigmont, Tekoa, Plummer, Spokane Valley, Orin-Rice Road, Moscow, Soldiers Meadow Road, Post Falls, Hayden, Peola, Winthrop, Worley, La Crosse, Springdale-Hunters Road, Colfax, and Deer Park. * WHEN...Until 9 PM PDT Wednesday. * IMPACTS...Hot temperatures will increase the risk of heat-related illnesses. Heat of this magnitude affects anyone without cooling and hydration as well as health systems and industries.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. 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.


Extreme Heat Warning issued August 25 at 2:42PM PDT until August 27 at 9:00PM PDT by NWS Spokane WA

Effective: Mon August 25, 2025, 2:42 PM
Expires: Tue August 26, 2025, 3:00 PM

* WHAT...Hot temperatures. High temperatures 95 to 102 degrees. Limited overnight relief with low temperatures 61 to 72. * WHERE...Chelan, Coulee City, Leavenworth, Lewiston, Pomeroy, Brewster, Nespelem, Okanogan, Grand Coulee, Gifford, Othello, Cashmere, Pangborn Airport, Odessa, Wilbur, Peck, Ritzville, Omak, Quincy, Bridgeport, Plain, Culdesac, Moses Lake, Ephrata, Number 1 Canyon, Entiat, Tonasket, Alpowa Summit, Harrington, Mansfield, Clarkston, Creston, Badger Mountain Road, Number 2 Canyon, Oroville, Wenatchee, Lewiston Grade, Disautel Pass, Lapwai, and Waterville. * WHEN...Until 9 PM PDT Wednesday. * IMPACTS...Hot temperatures will increase the risk of heat-related illnesses. Heat of this magnitude affects anyone without cooling and hydration as well as health systems and industries.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. 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.


Heat Advisory issued August 25 at 2:42PM PDT until August 27 at 9:00PM PDT by NWS Spokane WA

Effective: Mon August 25, 2025, 2:42 PM
Expires: Tue August 26, 2025, 3:00 PM

* WHAT...Hot temperatures. High temperatures 90 to 99 degrees for elevations below 3500 feet. High temperatures 80 to 89 degrees for elevations above 3500 feet * WHERE...Coeur d'Alene, Potlatch, Fruitland, Conconully, Rosalia, Colville, Cloverland Road, Pullman, Newport, Wauconda, Kamiah, Nezperce, Mountain Road, Winchester, Northport, Downtown Spokane, Genesee, Boulder Creek Road, Methow, Republic, Highway 20 Wauconda Summit, Oakesdale, Davenport, Metaline Falls, Ione, Loup Loup Pass, Chesaw Road, Airway Heights, Mazama, Chewelah, Uniontown, Anatone, Flowery Trail Road, Cheney, Metaline, Tiger, Sherman Pass, Rockford, Twisp, Inchelium, Fairfield, Kettle Falls, Craigmont, Tekoa, Plummer, Spokane Valley, Orin-Rice Road, Moscow, Soldiers Meadow Road, Post Falls, Hayden, Peola, Winthrop, Worley, La Crosse, Springdale-Hunters Road, Colfax, and Deer Park. * WHEN...Until 9 PM PDT Wednesday. * IMPACTS...Hot temperatures will increase the risk of heat-related illnesses. Heat of this magnitude affects anyone without cooling and hydration as well as health systems and industries.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. 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.


Monday, August 25, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 77.9°F
Average Humidity: 27%
Chance of Rain: 0%
Wind: 4.3 mph
UV Index: 1.8

Air Quality

AQI: 1 - Good
PM2.5: 4.7 μg/m3
PM10: 5.33 μg/m3
Carbon Monoxide: 263.42 μg/m3
Nitrogen Dioxide: 7.08 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 98.84 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:00 PM
Sunset: 7:54 PM
Daylight: 13 hrs 48 mins
Moonrise: 8:51 AM
Moon Transit: 2:53 PM
Moonset: 8:42 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:23 PM - 4:53 PM

Minor Periods

8:12 PM - 9:42 PM
8:21 AM - 9:51 AM

Action Rating: 4 out of 5

Tuesday, August 26, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 78.1°F
Average Humidity: 27%
Chance of Rain: 0%
Wind: 5.1 mph
UV Index: 1.6

Air Quality

AQI: 1 - Good
PM2.5: 5.72 μg/m3
PM10: 6.46 μg/m3
Carbon Monoxide: 264.08 μg/m3
Nitrogen Dioxide: 6.46 μg/m3
Sulphur Dioxide: 1.02 μg/m3
Ozone: 98.56 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 1:00 PM
Sunset: 7:52 PM
Daylight: 13 hrs 45 mins
Moonrise: 10:00 AM
Moon Transit: 3:33 PM
Moonset: 8:55 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:03 PM - 5:33 PM

Minor Periods

8:25 PM - 9:55 PM
9:30 AM - 11:00 AM

Action Rating: 2 out of 5

Wednesday, August 27, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 76.6°F
Average Humidity: 28%
Chance of Rain: 0%
Wind: 11.6 mph
UV Index: 1.4

Air Quality

AQI: 1 - Good
PM2.5: 9.43 μg/m3
PM10: 10.21 μg/m3
Carbon Monoxide: 263.05 μg/m3
Nitrogen Dioxide: 7.91 μg/m3
Sulphur Dioxide: 1.03 μg/m3
Ozone: 99.56 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 1:00 PM
Sunset: 7:50 PM
Daylight: 13 hrs 41 mins
Moonrise: 11:10 AM
Moon Transit: 4:14 PM
Moonset: 9:09 PM
Moon Phase: Waxing Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:44 PM - 6:14 PM

Minor Periods

8:39 PM - 10:09 PM
10:40 AM - 12:10 AM

Action Rating: 2 out of 5

Thursday, August 28, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 75.4°F
Average Humidity: 41%
Chance of Rain: 0%
Wind: 8.1 mph
UV Index: 0.7

Air Quality

AQI: 2 - Moderate
PM2.5: 17.46 μg/m3
PM10: 18.2 μg/m3
Carbon Monoxide: 278.35 μg/m3
Nitrogen Dioxide: 7.42 μg/m3
Sulphur Dioxide: 1.06 μg/m3
Ozone: 101.12 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:00 PM
Sunset: 7:48 PM
Daylight: 13 hrs 38 mins
Moonrise: 12:20 AM
Moon Transit: 4:57 PM
Moonset: 9:26 PM
Moon Phase: Waxing Crescent
Moon Illumination: 21.1%

Best Times for Fishing or Hunting

Major Periods

12:02 AM - 2:32 AM
4:27 PM - 6:57 PM

Minor Periods

8:56 PM - 10:26 PM
11:50 AM - 1:20 PM

Action Rating: 2 out of 5

Friday, August 29, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 70.7°F
Average Humidity: 47%
Chance of Rain: 0%
Wind: 4.7 mph
UV Index: 1.4

Air Quality

AQI: 2 - Moderate
PM2.5: 16.44 μg/m3
PM10: 17.34 μg/m3
Carbon Monoxide: 331.59 μg/m3
Nitrogen Dioxide: 11.23 μg/m3
Sulphur Dioxide: 0.71 μg/m3
Ozone: 98.23 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 1:00 PM
Sunset: 7:46 PM
Daylight: 13 hrs 34 mins
Moonrise: 1:31 PM
Moon Transit: 5:43 PM
Moonset: 9:48 PM
Moon Phase: Waxing Crescent
Moon Illumination: 31.0%

Best Times for Fishing or Hunting

Major Periods

12:45 AM - 3:15 AM
5:13 PM - 7:43 PM

Minor Periods

9:18 PM - 10:48 PM
1:01 PM - 2:31 PM

Action Rating: 3 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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