Water Temperature of Dead Run in McLean, VA

Current Water Temperature

74.7°F

Measurement Time: Wednesday, July 8, 2026, 3:15 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

79°F
Partly cloudy
Partly cloudy
81.1°F
85°F
79%
S 4.3 mph
7.5 mph
82°F
66.8°F
0 in
75%
9 mi
1016 mbar
0

Five Day Weather Forecast

Overcast
Wed
H: 87°F
L: 71°F
Sunny
Thu
H: 88°F
L: 73°F
Sunny
Fri
H: 91°F
L: 70°F
Patchy rain nearby
Sat
H: 87°F
L: 68°F
Partly Cloudy
Sun
H: 73°F
L: 67°F

Air Quality

AQI: 2 - Moderate
PM2.5: 9.1 μg/m3
PM10: 9.3 μg/m3
Carbon Monoxide: 240 μg/m3
Nitrogen Dioxide: 13 μg/m3
Sulphur Dioxide: 1.6 μg/m3
Ozone: 99 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:13 PM
Sunset: 8:37 PM
Daylight: 14 hrs 46 mins
Moonrise: 12:37 AM
Moon Transit: 7:28 AM
Moonset: 2:33 PM
Moon Phase: Last Quarter
Moon Illumination: 26.8%

Best Times for Fishing or Hunting

Major Periods

6:58 AM - 9:28 AM
9:09 PM - 11:39 PM

Minor Periods

2:03 PM - 3:33 PM
12:07 AM - 1:37 AM

Action Rating: 2 out of 5

Wednesday, July 8, 2026

Weather Forecast

Overcast
87.3°F
70.9°F
76.9°F
79%
0 in
17%
0%
7.4 mph
5.3


Air Quality

AQI: 1 - Good
PM2.5: 9 μg/m3
PM10: 9.46 μg/m3
Carbon Monoxide: 220.79 μg/m3
Nitrogen Dioxide: 11.34 μg/m3
Sulphur Dioxide: 1.66 μg/m3
Ozone: 85.88 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:13 PM
Sunset: 8:37 PM
Daylight: 14 hrs 46 mins
Moonrise: 12:37 AM
Moon Transit: 7:28 AM
Moonset: 2:33 PM
Moon Phase: Last Quarter
Moon Illumination: 26.8%

Best Times for Fishing or Hunting

Major Periods

6:58 AM - 9:28 AM
9:09 PM - 11:39 PM

Minor Periods

2:03 PM - 3:33 PM
12:07 AM - 1:37 AM

Action Rating: 2 out of 5

Thursday, July 9, 2026

Weather Forecast

Sunny
87.5°F
72.7°F
77.6°F
83%
0.87 in
81%
0%
6.9 mph
8.9


Air Quality

AQI: 1 - Good
PM2.5: 6.88 μg/m3
PM10: 7.25 μg/m3
Carbon Monoxide: 168 μg/m3
Nitrogen Dioxide: 9.09 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 77.13 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:14 PM
Sunset: 8:37 PM
Daylight: 14 hrs 45 mins
Moonrise: 1:06 AM
Moon Transit: 8:19 AM
Moonset: 3:46 PM
Moon Phase: Last Quarter
Moon Illumination: 17.4%

Best Times for Fishing or Hunting

Major Periods

7:49 AM - 10:19 AM
12:00 AM - 12:00 AM

Minor Periods

3:16 PM - 4:46 PM
12:36 AM - 2:06 AM

Action Rating: 2 out of 5

Friday, July 10, 2026

Weather Forecast

Sunny
90.7°F
70.2°F
76.5°F
80%
0.27 in
72%
0%
15 mph
8.6


Air Quality

AQI: 1 - Good
PM2.5: 8.86 μg/m3
PM10: 9.05 μg/m3
Carbon Monoxide: 175.54 μg/m3
Nitrogen Dioxide: 10.73 μg/m3
Sulphur Dioxide: 1.83 μg/m3
Ozone: 82.5 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:14 PM
Sunset: 8:36 PM
Daylight: 14 hrs 44 mins
Moonrise: 1:41 AM
Moon Transit: 9:16 AM
Moonset: 5:03 PM
Moon Phase: Waning Crescent
Moon Illumination: 9.7%

Best Times for Fishing or Hunting

Major Periods

8:46 AM - 11:16 AM
12:00 AM - 12:00 AM

Minor Periods

4:33 PM - 6:03 PM
1:11 AM - 2:41 AM

Action Rating: 2 out of 5

Saturday, July 11, 2026

Weather Forecast

Patchy rain nearby
87.3°F
68.2°F
76°F
79%
0.2 in
73%
0%
7.8 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 10.71 μg/m3
PM10: 10.85 μg/m3
Carbon Monoxide: 166.91 μg/m3
Nitrogen Dioxide: 15.19 μg/m3
Sulphur Dioxide: 1.63 μg/m3
Ozone: 66.96 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:14 PM
Sunset: 8:36 PM
Daylight: 14 hrs 43 mins
Moonrise: 2:27 AM
Moon Transit: 10:19 AM
Moonset: 6:19 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:49 AM - 12:19 AM

Minor Periods

5:49 PM - 7:19 PM
1:57 AM - 3:27 AM

Action Rating: 2 out of 5

Sunday, July 12, 2026

Weather Forecast

Partly Cloudy
73.3°F
66.6°F
69.6°F
87%
0.27 in
82%
0%
8.1 mph
3.9


Air Quality

AQI: 2 - Moderate
PM2.5: 16.4 μg/m3
PM10: 16.5 μg/m3
Carbon Monoxide: 298.44 μg/m3
Nitrogen Dioxide: 26.39 μg/m3
Sulphur Dioxide: 2.23 μg/m3
Ozone: 26.56 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:14 PM
Sunset: 8:35 PM
Daylight: 14 hrs 42 mins
Moonrise: 3:23 AM
Moon Transit: 11:25 AM
Moonset: 7:27 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:09 AM - 2:39 AM
10:55 AM - 1:25 PM

Minor Periods

6:57 PM - 8:27 PM
2:53 AM - 4:23 AM

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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