Water Temperature of the Cascade River in Marblemount, WA

Current Water Temperature

46.9°F 8.3°C
Frigid Dangerously Cold
46.9°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: Wednesday, November 11, 2026, 8:45 PM PST

Temperature Locations

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Local Points of Interest

Skagit River

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Cascade River

Station Name: CASCADE RIVER AT MARBLEMOUNT, WA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 348 feet

Nearest Address:
5901 S Cascade Rd
Marblemount, WA 98267
Skagit County

GPS Coordinates: 48.5262307, -121.4154046

Nearby Water Temperatures

Skagit River, Marblemount, WA (0.8 mi)
Bacon Creek, Marblemount, WA (5.5 mi)
Sauk River, Concrete, WA (9.9 mi)
Skagit River, Newhalem, WA (12.7 mi)
Sauk River, Darrington, WA (20.6 mi)
Big Beaver Creek, Diablo, WA (23.4 mi)
Ruby Creek, Newhalem, WA (23.6 mi)
Sauk River, Darrington, WA (24.8 mi)
North Fork Nooksack River, Glacier, WA (32.7 mi)
Skookum Creek, Doran, WA (34.6 mi)
South Fork Nooksack River, Doran, WA (35.9 mi)
South Fork Sultan River, Sultan, WA (41.2 mi)
Skagit River, Burlington, WA (42.5 mi)
Sultan River, Lake Roesiger, WA (42.9 mi)
Nooksack River, Cedarville, WA (45.6 mi)

Weather for Marblemount, Washington

Current Weather

58.5°F
Overcast
Conditions: Overcast
Humidity: 37%
Feels Like: 53.6°F
Wind: SSE 2.8 mph
Wind Gusts: 3.8 mph
Pressure: 29.8 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 34.9 mi
UV Index: 0

Five-Day Weather Forecast

Overcast
Thu
H: 65°F
L: 55°F
Slight Rain
Fri
H: 62°F
L: 49°F
Slight Rain
Sat
H: 51°F
L: 49°F
Moderate Rain Showers
Sun
H: 50°F
L: 46°F
Light Drizzle
Mon
H: 48°F
L: 41°F

Air Quality

EPA Index 1 • Good

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

PM2.5
5 μg/m³
Good
PM10
5.3 μg/m³
Good
Ozone (O3)
48 μg/m³
Photochemical
NO2
1.4 μg/m³
Nitrogen Dioxide
SO2
0 μg/m³
Sulfur Dioxide
CO
122 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 21m daylight
Sunrise 7:09 AM
Solar Noon 11:49 AM
Sunset 4:30 PM
Moon
Waxing Crescent • 6%
Moonrise 11:01 AM
Transit 2:42 PM
Moonset 6:26 PM

Best Times for Fishing or Hunting

Major Periods

1:46 AM - 4:16 AM
2:12 PM - 4:42 PM

Minor Periods

10:31 AM - 12:01 PM
5:56 PM - 7:26 PM
Action Rating:
Good Action 3/5
Thursday, November 12, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 59.5°F
Average Humidity: 43%
Chance of Rain: 3%
Wind: 9.1 mph
UV Index: 1.3

Air Quality

EPA Index 1 • Good
PM2.5
4.7 μg/m³
Good
PM10
5 μg/m³
Good
Ozone (O3)
46.7 μg/m³
Photochemical
NO2
1.7 μg/m³
Nitrogen Dioxide
SO2
0.1 μg/m³
Sulfur Dioxide
CO
128.9 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 21m daylight
Sunrise 7:09 AM
Solar Noon 11:49 AM
Sunset 4:30 PM
Moon
Waxing Crescent • 6%
Moonrise 11:01 AM
Transit 2:42 PM
Moonset 6:26 PM

Best Times for Fishing or Hunting

Major Periods

1:46 AM - 4:16 AM
2:12 PM - 4:42 PM

Minor Periods

10:31 AM - 12:01 PM
5:56 PM - 7:26 PM
Action Rating:
Good Action 3/5
Friday, November 13, 2026

Weather Forecast

Conditions: Slight Rain
Average Temperature: 55.8°F
Average Humidity: 56%
Chance of Rain: 83%
Wind: 10.6 mph
UV Index: 1.8

Air Quality

EPA Index 1 • Good
PM2.5
8.4 μg/m³
Good
PM10
8.9 μg/m³
Good
Ozone (O3)
54.8 μg/m³
Photochemical
NO2
2.2 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
155.6 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 18m daylight
Sunrise 7:11 AM
Solar Noon 11:50 AM
Sunset 4:29 PM
Moon
Waxing Crescent • 13%
Moonrise 11:43 AM
Transit 3:32 PM
Moonset 7:27 PM

Best Times for Fishing or Hunting

Major Periods

2:37 AM - 5:07 AM
3:02 PM - 5:32 PM

Minor Periods

11:13 AM - 12:43 PM
6:57 PM - 8:27 PM
Action Rating:
Fair Action 2/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Slight Rain
Average Temperature: 49.6°F
Average Humidity: 91%
Chance of Rain: 87%
Wind: 4.6 mph
UV Index: 0.8

Air Quality

EPA Index 1 • Good
PM2.5
3.5 μg/m³
Good
PM10
4.3 μg/m³
Good
Ozone (O3)
66.4 μg/m³
Photochemical
NO2
1.9 μg/m³
Nitrogen Dioxide
SO2
0.2 μg/m³
Sulfur Dioxide
CO
131.6 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 15m daylight
Sunrise 7:12 AM
Solar Noon 11:50 AM
Sunset 4:28 PM
Moon
Waxing Crescent • 21%
Moonrise 12:16 PM
Transit 4:21 PM
Moonset 8:34 PM

Best Times for Fishing or Hunting

Major Periods

3:27 AM - 5:57 AM
3:51 PM - 6:21 PM

Minor Periods

11:46 AM - 1:16 PM
8:04 PM - 9:34 PM
Action Rating:
Fair Action 2/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Moderate Rain Showers
Average Temperature: 48.4°F
Average Humidity: 95%
Chance of Rain: 98%
Wind: 5.1 mph
UV Index: 0.2

Air Quality

EPA Index 1 • Good
PM2.5
0.8 μg/m³
Good
PM10
1 μg/m³
Good
Ozone (O3)
54.5 μg/m³
Photochemical
NO2
1.8 μg/m³
Nitrogen Dioxide
SO2
0.1 μg/m³
Sulfur Dioxide
CO
128.3 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 12m daylight
Sunrise 7:14 AM
Solar Noon 11:50 AM
Sunset 4:26 PM
Moon
Waxing Crescent • 31%
Moonrise 12:41 PM
Transit 5:07 PM
Moonset 9:43 PM

Best Times for Fishing or Hunting

Major Periods

4:14 AM - 6:44 AM
4:37 PM - 7:07 PM

Minor Periods

12:11 PM - 1:41 PM
9:13 PM - 10:43 PM
Action Rating:
Very Good 4/5
Monday, November 16, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 46°F
Average Humidity: 92%
Chance of Rain: 75%
Wind: 3.9 mph
UV Index: 1.1

Air Quality

EPA Index 1 • Good
PM2.5
2.4 μg/m³
Good
PM10
3.4 μg/m³
Good
Ozone (O3)
60.2 μg/m³
Photochemical
NO2
2.3 μg/m³
Nitrogen Dioxide
SO2
0.3 μg/m³
Sulfur Dioxide
CO
157.5 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 10m daylight
Sunrise 7:15 AM
Solar Noon 11:50 AM
Sunset 4:25 PM
Moon
First Quarter • 42%
Moonrise 1:01 PM
Transit 5:51 PM
Moonset 10:53 PM

Best Times for Fishing or Hunting

Major Periods

4:59 AM - 7:29 AM
5:21 PM - 7:51 PM

Minor Periods

12:31 PM - 2:01 PM
10:23 PM - 11:53 PM
Action Rating:
Good Action 3/5
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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