Water Temperature of the Similkameen River in Nighthawk, WA

Current Water Temperature

45.3°F 7.4°C
Frigid Dangerously Cold
45.3°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Severe hypothermia and cold water shock risk. Unprotected swimming causes rapid loss of dexterity in under 5 minutes.

Measurement Time: Tuesday, November 10, 2026, 12:30 AM PST

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

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

51.8°F
Overcast
Conditions: Overcast
Humidity: 59%
Feels Like: 45°F
Wind: E 9.3 mph
Wind Gusts: 17 mph
Pressure: 30.04 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 17 mi
UV Index: 1

Weather Forecast

Light Drizzle
Tue
H: 57°F
L: 45°F
Overcast
Wed
H: 62°F
L: 51°F
Overcast
Thu
H: 56°F
L: 47°F
Overcast
Fri
H: 59°F
L: 47°F
Light Drizzle
Sat
H: 58°F
L: 46°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
5.6 μg/m³
Good
PM10
7.3 μg/m³
Good
Ozone (O3)
45 μg/m³
Photochemical
NO2
4 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
139 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 24m daylight
Sunrise 7:00 AM
Solar Noon 11:42 AM
Sunset 4:24 PM
Moon
New • 0%
Moonrise 9:01 AM
Transit 12:51 PM
Moonset 4:39 PM

Best Times for Fishing or Hunting

Major Periods

12:21 PM - 2:51 PM
11:56 PM - 2:26 AM

Minor Periods

8:31 AM - 10:01 AM
4:09 PM - 5:39 PM
Action Rating:
Very Good 4/5
Tuesday, November 10, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 51.8°F
Average Humidity: 68%
Chance of Rain: 48%
Wind: 15.4 mph
UV Index: 1.8

Air Quality

EPA Index 1 • Good
PM2.5
3.4 μg/m³
Good
PM10
4.4 μg/m³
Good
Ozone (O3)
50.1 μg/m³
Photochemical
NO2
4.1 μg/m³
Nitrogen Dioxide
SO2
0.3 μg/m³
Sulfur Dioxide
CO
145 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 24m daylight
Sunrise 7:00 AM
Solar Noon 11:42 AM
Sunset 4:24 PM
Moon
New • 0%
Moonrise 9:01 AM
Transit 12:51 PM
Moonset 4:39 PM

Best Times for Fishing or Hunting

Major Periods

12:21 PM - 2:51 PM
11:56 PM - 2:26 AM

Minor Periods

8:31 AM - 10:01 AM
4:09 PM - 5:39 PM
Action Rating:
Very Good 4/5
Wednesday, November 11, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 55.4°F
Average Humidity: 65%
Chance of Rain: 5%
Wind: 16.8 mph
UV Index: 1.2

Air Quality

EPA Index 1 • Good
PM2.5
4.4 μg/m³
Good
PM10
4.9 μg/m³
Good
Ozone (O3)
46.3 μg/m³
Photochemical
NO2
5 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
155.5 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 21m daylight
Sunrise 7:02 AM
Solar Noon 11:42 AM
Sunset 4:23 PM
Moon
New • 2%
Moonrise 10:04 AM
Transit 1:43 PM
Moonset 5:22 PM

Best Times for Fishing or Hunting

Major Periods

12:47 AM - 3:17 AM
1:13 PM - 3:43 PM

Minor Periods

9:34 AM - 11:04 AM
4:52 PM - 6:22 PM
Action Rating:
Very Good 4/5
Thursday, November 12, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 51.1°F
Average Humidity: 76%
Chance of Rain: 1%
Wind: 12.7 mph
UV Index: 1.6

Air Quality

EPA Index 1 • Good
PM2.5
7.4 μg/m³
Good
PM10
7.6 μg/m³
Good
Ozone (O3)
46.5 μg/m³
Photochemical
NO2
4.7 μg/m³
Nitrogen Dioxide
SO2
0.3 μg/m³
Sulfur Dioxide
CO
169.5 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 18m daylight
Sunrise 7:04 AM
Solar Noon 11:42 AM
Sunset 4:21 PM
Moon
Waxing Crescent • 6%
Moonrise 10:56 AM
Transit 2:34 PM
Moonset 6:15 PM

Best Times for Fishing or Hunting

Major Periods

1:39 AM - 4:09 AM
2:04 PM - 4:34 PM

Minor Periods

10:26 AM - 11:56 AM
5:45 PM - 7:15 PM
Action Rating:
Good Action 3/5
Friday, November 13, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 51.4°F
Average Humidity: 66%
Chance of Rain: 64%
Wind: 8.6 mph
UV Index: 2

Air Quality

EPA Index 2 • Moderate
PM2.5
9 μg/m³
Good
PM10
9.4 μg/m³
Good
Ozone (O3)
49 μg/m³
Photochemical
NO2
5.9 μg/m³
Nitrogen Dioxide
SO2
0.5 μg/m³
Sulfur Dioxide
CO
165.4 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 15m daylight
Sunrise 7:05 AM
Solar Noon 11:42 AM
Sunset 4:20 PM
Moon
Waxing Crescent • 13%
Moonrise 11:38 AM
Transit 3:25 PM
Moonset 7:17 PM

Best Times for Fishing or Hunting

Major Periods

2:30 AM - 5:00 AM
2:55 PM - 5:25 PM

Minor Periods

11:08 AM - 12:38 PM
6:47 PM - 8:17 PM
Action Rating:
Fair Action 2/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 51.1°F
Average Humidity: 75%
Chance of Rain: 59%
Wind: 7.5 mph
UV Index: 1.6

Air Quality

EPA Index 1 • Good
PM2.5
2.6 μg/m³
Good
PM10
2.9 μg/m³
Good
Ozone (O3)
61.9 μg/m³
Photochemical
NO2
1.9 μg/m³
Nitrogen Dioxide
SO2
0.3 μg/m³
Sulfur Dioxide
CO
138.7 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 12m daylight
Sunrise 7:07 AM
Solar Noon 11:42 AM
Sunset 4:19 PM
Moon
Waxing Crescent • 21%
Moonrise 12:10 PM
Transit 4:13 PM
Moonset 8:24 PM

Best Times for Fishing or Hunting

Major Periods

3:19 AM - 5:49 AM
3:43 PM - 6:13 PM

Minor Periods

11:40 AM - 1:10 PM
7:54 PM - 9:24 PM
Action Rating:
Fair Action 2/5
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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