Water Temperature of the Similkameen River in Nighthawk, WA

Current Water Temperature

41.7°F

Measurement Time: Thursday, April 16, 2026, 10:30 PM PDT

Temperature Locations

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Local Points of Interest

Ellemeham Wildlife Area

Similkameen River

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

Elevation Above Sea Level: 1,165 feet

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 mi)
North Fork Nooksack River, Glacier, WA (101.1 mi)
Sauk River, Darrington, WA (101.7 mi)

Weather for Nighthawk, Washington

Current Weather

34.5°F
Clear
Clear
30.3°F
34.5°F
40%
NW 5.1 mph
10.8 mph
30.3°F
12.8°F
0 in
0%
6 mi
1023 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 55°F
L: 32°F
Overcast
Sat
H: 53°F
L: 33°F
Partly Cloudy
Sun
H: 65°F
L: 37°F
Sunny
Mon
H: 69°F
L: 40°F
Sunny
Tue
H: 74°F
L: 44°F

Air Quality

AQI: 1 - Good
PM2.5: 2.54 μg/m3
PM10: 3.54 μg/m3
Carbon Monoxide: 156.84 μg/m3
Nitrogen Dioxide: 1.14 μg/m3
Sulphur Dioxide: 1.14 μg/m3
Ozone: 105 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 12:57 AM
Sunset: 7:54 PM
Daylight: 13 hrs 51 mins
Moonrise: 5:46 AM
Moon Transit: 1:10 PM
Moonset: 8:55 PM
Moon Phase: New
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

9:01 PM - 11:31 PM
12:40 AM - 3:10 PM

Minor Periods

8:25 PM - 9:55 PM
5:16 AM - 6:46 AM

Action Rating: 3 out of 5

Freeze Warning issued April 16 at 10:49AM PDT until April 17 at 8:00AM PDT by NWS Spokane WA

Effective: Thu April 16, 2026, 10:49 AM
Expires: Fri April 17, 2026, 12:00 AM

* WHAT...Temperatures as low as 27 degrees expected. * WHERE...Wilbur, Creston, Clarkston, Pomeroy, Lewiston, Number 1 Canyon, Odessa, Grand Coulee, Alpowa Summit, Ephrata, Entiat, Moses Lake, Harrington, Cashmere, Number 2 Canyon, Othello, Ritzville, Pangborn Airport, Chelan, Gifford, Culdesac, Quincy, Peck, Lewiston Grade, Lapwai, Coulee City, and Wenatchee. * WHEN...From 2 AM to 8 AM PDT Friday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants from the cold.


Freeze Warning issued April 16 at 8:37PM PDT until April 17 at 8:00AM PDT by NWS Spokane WA

Effective: Thu April 16, 2026, 8:37 PM
Expires: Fri April 17, 2026, 8:00 AM

* WHAT...Sub-freezing temperatures as low as 27 expected. * WHERE...Number 2 Canyon, Lewiston, Harrington, Grand Coulee, Chelan, Culdesac, Moses Lake, Number 1 Canyon, Gifford, Pomeroy, Lewiston Grade, Clarkston, Wilbur, Pangborn Airport, Lapwai, Alpowa Summit, Wenatchee, Quincy, Coulee City, Ritzville, Creston, Peck, Othello, Entiat, Ephrata, Cashmere, and Odessa. * WHEN...From 2 AM to 8 AM PDT Friday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants from the cold.
Friday, April 17, 2026

Weather Forecast

Sunny
55.2°F
31.6°F
42.8°F
41%
0 in
0%
0%
6.3 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 3.41 μg/m3
PM10: 3.99 μg/m3
Carbon Monoxide: 158.24 μg/m3
Nitrogen Dioxide: 3.4 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 88.96 μg/m3

Astronomical

Sunrise: 6:03 AM
Sun Transit: 12:57 AM
Sunset: 7:54 PM
Daylight: 13 hrs 51 mins
Moonrise: 5:46 AM
Moon Transit: 1:10 PM
Moonset: 8:55 PM
Moon Phase: New
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

9:01 PM - 11:31 PM
12:40 AM - 3:10 PM

Minor Periods

8:25 PM - 9:55 PM
5:16 AM - 6:46 AM

Action Rating: 3 out of 5

Saturday, April 18, 2026

Weather Forecast

Overcast
53.2°F
33.3°F
43.5°F
52%
0 in
0%
0%
8.7 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 3.47 μg/m3
PM10: 4.48 μg/m3
Carbon Monoxide: 156.88 μg/m3
Nitrogen Dioxide: 3.34 μg/m3
Sulphur Dioxide: 1.16 μg/m3
Ozone: 96.76 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 12:57 AM
Sunset: 7:55 PM
Daylight: 13 hrs 54 mins
Moonrise: 6:09 AM
Moon Transit: 2:07 PM
Moonset: 10:25 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:37 PM - 4:07 PM

Minor Periods

9:55 PM - 11:25 PM
5:39 AM - 7:09 AM

Action Rating: 4 out of 5

Sunday, April 19, 2026

Weather Forecast

Partly Cloudy
65.3°F
36.7°F
50.8°F
48%
0 in
0%
0%
5.1 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 4.55 μg/m3
PM10: 6.84 μg/m3
Carbon Monoxide: 149.4 μg/m3
Nitrogen Dioxide: 3.73 μg/m3
Sulphur Dioxide: 1.26 μg/m3
Ozone: 96.6 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 12:57 AM
Sunset: 7:57 PM
Daylight: 13 hrs 58 mins
Moonrise: 6:41 AM
Moon Transit: 3:08 PM
Moonset: 11:52 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:38 PM - 5:08 PM

Minor Periods

12:00 AM - 12:00 AM
6:11 AM - 7:41 AM

Action Rating: 3 out of 5

Monday, April 20, 2026

Weather Forecast

Sunny
69.3°F
39.7°F
54.3°F
53%
0 in
0%
0%
5.1 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 4.55 μg/m3
PM10: 9.35 μg/m3
Carbon Monoxide: 139.69 μg/m3
Nitrogen Dioxide: 4.2 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 92.28 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 12:57 AM
Sunset: 7:58 PM
Daylight: 14 hrs 1 mins
Moonrise: 7:24 AM
Moon Transit: 4:13 PM
Moonset: 12:52 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:43 PM - 6:13 PM

Minor Periods

6:54 AM - 8:24 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, April 21, 2026

Weather Forecast

Sunny
74.1°F
43.7°F
54.5°F
49%
0 in
0%
0%
5.6 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 5.93 μg/m3
PM10: 14.29 μg/m3
Carbon Monoxide: 181.55 μg/m3
Nitrogen Dioxide: 6.49 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 95.77 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 12:57 AM
Sunset: 8:00 PM
Daylight: 14 hrs 5 mins
Moonrise: 8:24 AM
Moon Transit: 5:17 PM
Moonset: 1:07 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

12:07 AM - 2:37 AM
4:47 PM - 7:17 PM

Minor Periods

7:54 AM - 9:24 AM
12:37 AM - 2:07 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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