Water Temperature of Dead Run in McLean, VA

Current Water Temperature

50.9°F 10.5°C
Cold Thermal Gear Required
50.9°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Cold shock risk with rapid dexterity loss (10–15 mins). Wetsuit or drysuit strongly advised for any immersion.

Measurement Time: Tuesday, November 10, 2026, 6:15 AM EST

Temperature Locations

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Local Points of Interest

Dead Run; Langley Oaks Park

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Dead Run

Station Name: DEAD RUN AT WHANN AVENUE NEAR MCLEAN, VA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 226 feet

Nearest Address:
800 Whann Ave
McLean, VA 22101
Fairfax County

GPS Coordinates: 38.95977716, -77.1756743

Nearby Water Temperatures

Difficult Run, McLean, VA (3.9 mi)
Sligo Creek, Takoma Park, MD (9.4 mi)
Difficult Run, Oakton, VA (9.9 mi)
Washington Channel, Washington, DC (10.2 mi)
Paint Branch, Calverton, MD (12.4 mi)
Northeast Branch Anacostia River, Riverdale Park, MD (13.4 mi)
Patuxent River, Brighton, MD (18.5 mi)
Potomac River, Point of Rocks, MD (29.3 mi)
Carroll Creek, Frederick, MD (34.9 mi)
Scotts Level Branch, Milford Mill, MD (35.5 mi)
Carroll Creek, Frederick, MD (35.8 mi)
Severn River, Annapolis, MD (37.5 mi)
Northwest Harbor, Baltimore, MD (38.4 mi)
Chesapeake Bay, Annapolis, MD (39.1 mi)
Herring Run, Baltimore, MD (41.5 mi)

Weather for McLean, Virginia

Current Weather

59.3°F
Sunny
Conditions: Sunny
Humidity: 49%
Feels Like: 53.2°F
Wind: SW 6.7 mph
Wind Gusts: 14.1 mph
Pressure: 30.02 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 2.5

Weather Forecast

Sunny
Tue
H: 67°F
L: 43°F
Sunny
Wed
H: 64°F
L: 46°F
Patchy rain nearby
Thu
H: 61°F
L: 49°F

Air Quality

EPA Index 1 • Good

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

PM2.5
8.5 μg/m³
Good
PM10
9.2 μg/m³
Good
Ozone (O3)
59 μg/m³
Photochemical
NO2
12 μg/m³
Nitrogen Dioxide
SO2
3.1 μg/m³
Sulfur Dioxide
CO
206 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 13m daylight
Sunrise 6:46 AM
Solar Noon 11:52 AM
Sunset 4:59 PM
Moon
New • 0%
Moonrise 8:18 AM
Transit 12:56 PM
Moonset 5:30 PM

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 2:30 AM
12:26 PM - 2:56 PM

Minor Periods

7:48 AM - 9:18 AM
5:00 PM - 6:30 PM
Action Rating:
Very Good 4/5

Marine Weather Statement issued November 10 at 10:08AM EST by NWS Baltimore MD/Washington DC

Effective: Tue November 10, 2026, 10:08 AM
Expires: Tue November 10, 2026, 1:00 PM

Southwest to west winds will occasionally gust around 20 knots over the Chesapeake Bay north of the Bay Bridge and in the upper tidal Potomac River, through early afternoon. Mariners, especially those in small craft, should use caution and be prepared for locally higher winds.
Tuesday, November 10, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 54°F
Average Humidity: 60%
Chance of Rain: 4%
Wind: 6.7 mph
UV Index: 2.9

Astronomical

Sun
10h 13m daylight
Sunrise 6:46 AM
Solar Noon 11:52 AM
Sunset 4:59 PM
Moon
New • 0%
Moonrise 8:18 AM
Transit 12:56 PM
Moonset 5:30 PM

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 2:30 AM
12:26 PM - 2:56 PM

Minor Periods

7:48 AM - 9:18 AM
5:00 PM - 6:30 PM
Action Rating:
Very Good 4/5
Wednesday, November 11, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 54.8°F
Average Humidity: 68%
Chance of Rain: 8%
Wind: 7.4 mph
UV Index: 2.7

Astronomical

Sun
10h 11m daylight
Sunrise 6:47 AM
Solar Noon 11:52 AM
Sunset 4:58 PM
Moon
New • 2%
Moonrise 9:17 AM
Transit 1:47 PM
Moonset 6:16 PM

Best Times for Fishing or Hunting

Major Periods

12:51 AM - 3:21 AM
1:17 PM - 3:47 PM

Minor Periods

8:47 AM - 10:17 AM
5:46 PM - 7:16 PM
Action Rating:
Good Action 3/5
Thursday, November 12, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 53.8°F
Average Humidity: 80%
Chance of Rain: 66%
Wind: 9.8 mph
UV Index: 0.6

Astronomical

Sun
10h 9m daylight
Sunrise 6:48 AM
Solar Noon 11:52 AM
Sunset 4:57 PM
Moon
Waxing Crescent • 6%
Moonrise 10:11 AM
Transit 2:39 PM
Moonset 7:08 PM

Best Times for Fishing or Hunting

Major Periods

1:43 AM - 4:13 AM
2:09 PM - 4:39 PM

Minor Periods

9:41 AM - 11:11 AM
6:38 PM - 8:08 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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