Water Temperature of the Similkameen River in Nighthawk, WA

Current Water Temperature

54.3°F

Measurement Time: Sunday, October 5, 2025, 8:30 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

45.3°F
Clear
Conditions: Clear
Humidity: 65%
Feels Like: 44°F
Wind: NNE 3.4 mph
Wind Gusts: 7 mph
Pressure: 28.05 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Mon
H: 69°F
L: 43°F
Sunny
Tue
H: 69°F
L: 41°F
Sunny
Wed
H: 68°F
L: 41°F
Sunny
Thu
H: 75°F
L: 42°F
Sunny
Fri
H: 74°F
L: 46°F

Air Quality

PM2.5: 2.34 μg/m3
PM10: 2.54 μg/m3
Carbon Monoxide: 159.84 μg/m3
Nitrogen Dioxide: 3.94 μg/m3
Sulphur Dioxide: 1.94 μg/m3
Ozone: 75 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:46 AM
Sunset: 6:26 PM
Daylight: 11 hrs 20 mins
Moonrise: 6:06 PM
Moon Transit: 12:00 AM
Moonset: 6:29 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:50 AM - 10:20 AM

Minor Periods

5:36 PM - 7:06 PM
5:59 AM - 7:29 AM

Action Rating: 4 out of 5

Frost Advisory issued October 5 at 3:50PM PDT until October 6 at 9:00AM PDT by NWS Spokane WA

Effective: Sun October 5, 2025, 3:50 PM
Expires: Mon October 6, 2025, 4:00 AM

* WHAT...Temperatures around 32 to 35 degrees will result in frost formation. * WHERE...Grand Coulee, Wilbur, Coulee City, Moses Lake, Ephrata, Othello, Harrington, Quincy, Odessa, Creston, and Ritzville. * WHEN...From midnight tonight to 9 AM PDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.


Frost Advisory issued October 5 at 9:48PM PDT until October 6 at 9:00AM PDT by NWS Spokane WA

Effective: Sun October 5, 2025, 9:48 PM
Expires: Mon October 6, 2025, 9:00 AM

* WHAT...Temperatures as low as 32 will result in frost formation. * WHERE...Grand Coulee, Harrington, Moses Lake, Wilbur, Othello, Odessa, Quincy, Ephrata, Ritzville, Coulee City, and Creston. * WHEN...Until 9 AM PDT Monday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.
Monday, October 6, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 55°F
Average Humidity: 36%
Chance of Rain: 0%
Wind: 4.5 mph
UV Index: 0.8

Air Quality

AQI: 1 - Good
PM2.5: 2.56 μg/m3
PM10: 2.66 μg/m3
Carbon Monoxide: 146.96 μg/m3
Nitrogen Dioxide: 4.99 μg/m3
Sulphur Dioxide: 1.8 μg/m3
Ozone: 72.64 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:46 AM
Sunset: 6:26 PM
Daylight: 11 hrs 20 mins
Moonrise: 6:06 PM
Moon Transit: 12:00 AM
Moonset: 6:29 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
7:50 AM - 10:20 AM

Minor Periods

5:36 PM - 7:06 PM
5:59 AM - 7:29 AM

Action Rating: 4 out of 5

Tuesday, October 7, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 52.8°F
Average Humidity: 48%
Chance of Rain: 0%
Wind: 9.8 mph
UV Index: 0.7

Air Quality

AQI: 1 - Good
PM2.5: 2.74 μg/m3
PM10: 2.86 μg/m3
Carbon Monoxide: 141.4 μg/m3
Nitrogen Dioxide: 4.35 μg/m3
Sulphur Dioxide: 1.61 μg/m3
Ozone: 78.2 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:46 AM
Sunset: 6:24 PM
Daylight: 11 hrs 17 mins
Moonrise: 6:24 PM
Moon Transit: 12:51 AM
Moonset: 7:56 AM
Moon Phase: Full
Moon Illumination: 99.1%

Best Times for Fishing or Hunting

Major Periods

12:21 AM - 2:51 AM
8:41 AM - 11:11 AM

Minor Periods

5:54 PM - 7:24 PM
7:26 AM - 8:56 AM

Action Rating: 5 out of 5

Wednesday, October 8, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 52.7°F
Average Humidity: 43%
Chance of Rain: 0%
Wind: 5.4 mph
UV Index: 0.7

Air Quality

AQI: 1 - Good
PM2.5: 3.37 μg/m3
PM10: 3.63 μg/m3
Carbon Monoxide: 147.04 μg/m3
Nitrogen Dioxide: 3.32 μg/m3
Sulphur Dioxide: 1.59 μg/m3
Ozone: 80.44 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:45 AM
Sunset: 6:22 PM
Daylight: 11 hrs 13 mins
Moonrise: 6:46 PM
Moon Transit: 1:44 AM
Moonset: 9:26 AM
Moon Phase: Full
Moon Illumination: 95.8%

Best Times for Fishing or Hunting

Major Periods

1:14 AM - 3:44 AM
9:36 AM - 12:06 AM

Minor Periods

6:16 PM - 7:46 PM
8:56 AM - 10:26 AM

Action Rating: 4 out of 5

Thursday, October 9, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 55.4°F
Average Humidity: 42%
Chance of Rain: 0%
Wind: 6 mph
UV Index: 0.7

Air Quality

AQI: 1 - Good
PM2.5: 2.34 μg/m3
PM10: 2.81 μg/m3
Carbon Monoxide: 144.69 μg/m3
Nitrogen Dioxide: 3.65 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 70.46 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:45 AM
Sunset: 6:20 PM
Daylight: 11 hrs 9 mins
Moonrise: 7:16 PM
Moon Transit: 2:41 AM
Moonset: 10:58 AM
Moon Phase: Waning Gibbous
Moon Illumination: 90.1%

Best Times for Fishing or Hunting

Major Periods

2:11 AM - 4:41 AM
10:34 AM - 1:04 PM

Minor Periods

6:46 PM - 8:16 PM
10:28 AM - 11:58 AM

Action Rating: 3 out of 5

Friday, October 10, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 54°F
Average Humidity: 44%
Chance of Rain: 0%
Wind: 8.9 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: 7:12 AM
Sun Transit: 12:45 AM
Sunset: 6:18 PM
Daylight: 11 hrs 6 mins
Moonrise: 7:57 PM
Moon Transit: 3:42 AM
Moonset: 12:26 AM
Moon Phase: Waning Gibbous
Moon Illumination: 82.3%

Best Times for Fishing or Hunting

Major Periods

3:12 AM - 5:42 AM
11:36 AM - 2:06 PM

Minor Periods

7:27 PM - 8:57 PM
11:56 AM - 1:26 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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