Water Temperature of Dead Run in McLean, VA

Current Water Temperature

69.3°F

Measurement Time: Tuesday, June 9, 2026, 7:15 PM EDT

Temperature Locations

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Local Points of Interest

Dead Run; Langley Oaks Park

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

75.9°F
Partly cloudy
Partly cloudy
78.6°F
77.4°F
67%
SSE 6 mph
10.5 mph
74.1°F
61°F
0 in
75%
9 mi
1018 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Wed
H: 87°F
L: 70°F
Moderate rain
Thu
H: 98°F
L: 70°F
Moderate rain
Fri
H: 97°F
L: 69°F
Sunny
Sat
H: 84°F
L: 62°F
Patchy rain nearby
Sun
H: 90°F
L: 64°F

Air Quality

AQI: 1 - Good
PM2.5: 14 μg/m3
PM10: 16.4 μg/m3
Carbon Monoxide: 158 μg/m3
Nitrogen Dioxide: 11.8 μg/m3
Sulphur Dioxide: 1.6 μg/m3
Ozone: 80 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 1:08 PM
Sunset: 8:34 PM
Daylight: 14 hrs 52 mins
Moonrise: 2:10 AM
Moon Transit: 8:46 AM
Moonset: 3:36 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

8:16 AM - 10:46 AM
12:00 AM - 12:00 AM

Minor Periods

3:06 PM - 4:36 PM
1:40 AM - 3:10 AM

Action Rating: 2 out of 5

This is only a test for monitoring of vital dissemination systems.

Effective: Tue June 9, 2026, 8:28 PM
Expires: Tue June 9, 2026, 8:38 PM

Monitoring message only. Please disregard.

Monitoring message only. Please disregard.


Coastal Flood Advisory issued June 9 at 2:20PM EDT until June 10 at 4:00AM EDT by NWS Baltimore MD/Washington DC

Effective: Tue June 9, 2026, 2:20 PM
Expires: Tue June 9, 2026, 10:30 PM

* WHAT...Up to one half foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE...Shoreline in Anne Arundel County. * WHEN...From 11 PM this evening to 4 AM EDT Wednesday, especially around the time of high tide. * IMPACTS...At 2.6 feet, water may begin to pond in the parking lot at Annapolis City Dock, and surround the Alex Haley Memorial. * ADDITIONAL DETAILS...Tides one to one and a half feet above normal. The next high tide at Annapolis U.S. Naval Academy is at 1:36 AM and 12:52 PM.

If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Wednesday, June 10, 2026

Weather Forecast

Patchy rain nearby
87.2°F
70.3°F
75.8°F
74%
0.09 in
59%
0%
11 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 9.33 μg/m3
PM10: 10.47 μg/m3
Carbon Monoxide: 145 μg/m3
Nitrogen Dioxide: 7.7 μg/m3
Sulphur Dioxide: 1.06 μg/m3
Ozone: 80.04 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 1:08 PM
Sunset: 8:34 PM
Daylight: 14 hrs 52 mins
Moonrise: 2:10 AM
Moon Transit: 8:46 AM
Moonset: 3:36 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.1%

Best Times for Fishing or Hunting

Major Periods

8:16 AM - 10:46 AM
12:00 AM - 12:00 AM

Minor Periods

3:06 PM - 4:36 PM
1:40 AM - 3:10 AM

Action Rating: 2 out of 5

Thursday, June 11, 2026

Weather Forecast

Moderate rain
98.4°F
69.7°F
78.3°F
79%
0.61 in
77%
0%
13.4 mph
8.3


Air Quality

AQI: 1 - Good
PM2.5: 8.58 μg/m3
PM10: 8.92 μg/m3
Carbon Monoxide: 155.38 μg/m3
Nitrogen Dioxide: 11.68 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 73.13 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 1:08 PM
Sunset: 8:35 PM
Daylight: 14 hrs 52 mins
Moonrise: 2:37 AM
Moon Transit: 9:37 AM
Moonset: 4:51 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:07 AM - 11:37 AM

Minor Periods

4:21 PM - 5:51 PM
2:07 AM - 3:37 AM

Action Rating: 2 out of 5

Friday, June 12, 2026

Weather Forecast

Moderate rain
96.6°F
69°F
78.8°F
79%
0.42 in
78%
0%
10.1 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 9.47 μg/m3
PM10: 10.03 μg/m3
Carbon Monoxide: 140.08 μg/m3
Nitrogen Dioxide: 13.13 μg/m3
Sulphur Dioxide: 1.66 μg/m3
Ozone: 66.88 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 1:08 PM
Sunset: 8:35 PM
Daylight: 14 hrs 53 mins
Moonrise: 3:09 AM
Moon Transit: 10:32 AM
Moonset: 6:09 PM
Moon Phase: Waning Crescent
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:02 AM - 12:32 AM

Minor Periods

5:39 PM - 7:09 PM
2:39 AM - 4:09 AM

Action Rating: 2 out of 5

Saturday, June 13, 2026

Weather Forecast

Sunny
84.3°F
62.3°F
73.5°F
57%
0 in
3%
0%
9.6 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 8.75 μg/m3
PM10: 9.25 μg/m3
Carbon Monoxide: 150.43 μg/m3
Nitrogen Dioxide: 14.49 μg/m3
Sulphur Dioxide: 1.9 μg/m3
Ozone: 83.67 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 1:08 PM
Sunset: 8:36 PM
Daylight: 14 hrs 53 mins
Moonrise: 3:50 AM
Moon Transit: 11:34 AM
Moonset: 7:28 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:19 AM - 2:49 AM
11:04 AM - 1:34 PM

Minor Periods

6:58 PM - 8:28 PM
3:20 AM - 4:50 AM

Action Rating: 3 out of 5

Sunday, June 14, 2026

Weather Forecast

Patchy rain nearby
90.2°F
64°F
73.7°F
60%
0.01 in
17%
0%
9.6 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 14.52 μg/m3
PM10: 14.8 μg/m3
Carbon Monoxide: 271 μg/m3
Nitrogen Dioxide: 31.1 μg/m3
Sulphur Dioxide: 2.33 μg/m3
Ozone: 51.33 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 1:09 PM
Sunset: 8:36 PM
Daylight: 14 hrs 54 mins
Moonrise: 4:42 AM
Moon Transit: 12:40 AM
Moonset: 8:43 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

1:24 AM - 3:54 AM
12:10 AM - 2:40 PM

Minor Periods

8:13 PM - 9:43 PM
4:12 AM - 5:42 AM

Action Rating: 5 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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