Water Temperature of the Similkameen River in Nighthawk, WA

Current Water Temperature

68.7°F

Measurement Time: Saturday, August 1, 2026, 10:30 AM 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

68.2°F
Sunny
Sunny
68.2°F
73.6°F
35%
W 15.4 mph
17.8 mph
70.7°F
37.7°F
0 in
0%
6 mi
1010 mbar
0.7

Five Day Weather Forecast

Smoky haze
Sat
H: 83°F
L: 56°F
Smoky haze
Sun
H: 71°F
L: 39°F
Smoky haze
Mon
H: 77°F
L: 43°F
Smoky haze
Tue
H: 85°F
L: 48°F
Smoky haze
Wed
H: 91°F
L: 54°F

Air Quality

AQI: 5 - Very Unhealthy
PM2.5: 32.1 μg/m3
PM10: 32.7 μg/m3
Carbon Monoxide: 107 μg/m3
Nitrogen Dioxide: 4.6 μg/m3
Sulphur Dioxide: 1.9 μg/m3
Ozone: 76 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 1:04 PM
Sunset: 8:37 PM
Daylight: 15 hrs 6 mins
Moonrise: 9:49 PM
Moon Transit: 3:08 AM
Moonset: 8:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

2:38 AM - 5:08 AM
10:55 AM - 1:25 PM

Minor Periods

9:19 PM - 10:49 PM
8:25 AM - 9:55 AM

Action Rating: 3 out of 5

Red Flag Warning issued July 31 at 11:53PM PDT until August 1 at 11:00PM PDT by NWS Spokane WA

Effective: Fri July 31, 2026, 11:53 PM
Expires: Sat August 1, 2026, 8:00 PM

A strong cold front will sweep across the Inland Northwest Saturday. Very warm dry conditions and gusty winds will contribute to rapid fire spread for any new or ongoing fires. * Affected Area: Methow Valley (Zone 704) and Foothills of Central Washington Cascades (Zone 705). * Winds: West 15 to 25 mph with gusts up to 50 mph. * Relative Humidities: 20 to 27 percent. * Impacts: Rapid fire spread is expected with any new or ongoing fires.

A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.
Saturday, August 1, 2026

Weather Forecast

Smoky haze
82.8°F
55.6°F
70.8°F
29%
0 in
0%
0%
18.3 mph
5.2


Air Quality

AQI: 4 - Unhealthy
PM2.5: 80.82 μg/m3
PM10: 82.14 μg/m3
Carbon Monoxide: 154.33 μg/m3
Nitrogen Dioxide: 16.38 μg/m3
Sulphur Dioxide: 3.93 μg/m3
Ozone: 74.17 μg/m3

Astronomical

Sunrise: 5:31 AM
Sun Transit: 1:04 PM
Sunset: 8:37 PM
Daylight: 15 hrs 6 mins
Moonrise: 9:49 PM
Moon Transit: 3:08 AM
Moonset: 8:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

2:38 AM - 5:08 AM
10:55 AM - 1:25 PM

Minor Periods

9:19 PM - 10:49 PM
8:25 AM - 9:55 AM

Action Rating: 3 out of 5

Sunday, August 2, 2026

Weather Forecast

Smoky haze
70.7°F
39.2°F
57.8°F
40%
0 in
1%
0%
8.7 mph
3.2


Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 49.51 μg/m3
PM10: 50.15 μg/m3
Carbon Monoxide: 97.63 μg/m3
Nitrogen Dioxide: 9.08 μg/m3
Sulphur Dioxide: 2.33 μg/m3
Ozone: 60.92 μg/m3

Astronomical

Sunrise: 5:33 AM
Sun Transit: 1:04 PM
Sunset: 8:36 PM
Daylight: 15 hrs 3 mins
Moonrise: 10:03 PM
Moon Transit: 3:51 AM
Moonset: 10:09 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

3:21 AM - 5:51 AM
3:20 PM - 5:50 PM

Minor Periods

9:33 PM - 11:03 PM
9:39 AM - 11:09 AM

Action Rating: 3 out of 5

Monday, August 3, 2026

Weather Forecast

Smoky haze
77.1°F
42.9°F
59.8°F
41%
0 in
1%
0%
6.9 mph
5.4


Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 49.1 μg/m3
PM10: 49.98 μg/m3
Carbon Monoxide: 132.54 μg/m3
Nitrogen Dioxide: 9.78 μg/m3
Sulphur Dioxide: 2.71 μg/m3
Ozone: 68.29 μg/m3

Astronomical

Sunrise: 5:34 AM
Sun Transit: 1:04 PM
Sunset: 8:34 PM
Daylight: 15 hrs mins
Moonrise: 10:18 PM
Moon Transit: 12:00 AM
Moonset: 11:23 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

9:48 PM - 11:18 PM
10:53 AM - 12:23 AM

Action Rating: 2 out of 5

Tuesday, August 4, 2026

Weather Forecast

Smoky haze
85.4°F
47.6°F
66.5°F
29%
0 in
0%
0%
5.1 mph
3.8


Air Quality

AQI: 4 - Unhealthy
PM2.5: 82.2 μg/m3
PM10: 83.43 μg/m3
Carbon Monoxide: 245.39 μg/m3
Nitrogen Dioxide: 14.68 μg/m3
Sulphur Dioxide: 4.2 μg/m3
Ozone: 103.33 μg/m3

Astronomical

Sunrise: 5:36 AM
Sun Transit: 1:04 PM
Sunset: 8:33 PM
Daylight: 14 hrs 57 mins
Moonrise: 10:37 PM
Moon Transit: 5:20 AM
Moonset: 12:42 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

4:50 AM - 7:20 AM
1:10 PM - 3:40 PM

Minor Periods

10:07 PM - 11:37 PM
12:12 AM - 1:42 PM

Action Rating: 2 out of 5

Wednesday, August 5, 2026

Weather Forecast

Smoky haze
91.4°F
53.7°F
72.6°F
23%
0 in
0%
0%
5.6 mph
1.7


Air Quality

AQI: 5 - Very Unhealthy
PM2.5: 170.45 μg/m3
PM10: 173.32 μg/m3
Carbon Monoxide: 1030 μg/m3
Nitrogen Dioxide: 34.42 μg/m3
Sulphur Dioxide: 7.67 μg/m3
Ozone: 72.5 μg/m3

Astronomical

Sunrise: 5:37 AM
Sun Transit: 1:04 PM
Sunset: 8:31 PM
Daylight: 14 hrs 54 mins
Moonrise: 11:00 PM
Moon Transit: 6:10 AM
Moonset: 2:03 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

5:40 AM - 8:10 AM
2:00 PM - 4:30 PM

Minor Periods

10:30 PM - 12:00 PM
1:33 PM - 3:03 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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