Water Temperature of Dead Run in McLean, VA

Current Water Temperature

76.3°F

Measurement Time: Saturday, July 11, 2026, 4:15 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

84°F
Overcast
Overcast
86.7°F
88.6°F
65%
NE 5.1 mph
9.1 mph
85.3°F
66.9°F
0 in
100%
9 mi
1014 mbar
0

Five Day Weather Forecast

Sunny
Sat
H: 94°F
L: 69°F
Patchy rain nearby
Sun
H: 83°F
L: 70°F
Sunny
Mon
H: 85°F
L: 67°F
Sunny
Tue
H: 91°F
L: 65°F
Sunny
Wed
H: 98°F
L: 69°F

Air Quality

AQI: 1 - Good
PM2.5: 14.2 μg/m3
PM10: 14.4 μg/m3
Carbon Monoxide: 233 μg/m3
Nitrogen Dioxide: 15.7 μg/m3
Sulphur Dioxide: 2.1 μg/m3
Ozone: 85 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

Saturday, July 11, 2026

Weather Forecast

Sunny
94.3°F
68.5°F
79.8°F
72%
0 in
7%
0%
7.4 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 10.35 μg/m3
PM10: 10.53 μg/m3
Carbon Monoxide: 193.58 μg/m3
Nitrogen Dioxide: 11.11 μg/m3
Sulphur Dioxide: 1.75 μg/m3
Ozone: 78 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

Patchy rain nearby
83.3°F
69.7°F
75.4°F
79%
0.23 in
74%
0%
8.3 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 11.44 μg/m3
PM10: 12.48 μg/m3
Carbon Monoxide: 186.79 μg/m3
Nitrogen Dioxide: 9.35 μg/m3
Sulphur Dioxide: 1.74 μg/m3
Ozone: 83.33 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

Monday, July 13, 2026

Weather Forecast

Sunny
84.7°F
67°F
75°F
67%
0 in
6%
0%
6.5 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 12.17 μg/m3
PM10: 13.89 μg/m3
Carbon Monoxide: 162.21 μg/m3
Nitrogen Dioxide: 13.53 μg/m3
Sulphur Dioxide: 1.42 μg/m3
Ozone: 79.04 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:14 PM
Sunset: 8:35 PM
Daylight: 14 hrs 41 mins
Moonrise: 4:33 AM
Moon Transit: 12:32 AM
Moonset: 8:26 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

1:16 AM - 3:46 AM
12:02 AM - 2:32 PM

Minor Periods

7:56 PM - 9:26 PM
4:03 AM - 5:33 AM

Action Rating: 4 out of 5

Tuesday, July 14, 2026

Weather Forecast

Sunny
90.8°F
64.9°F
77.7°F
57%
0 in
3%
0%
6 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 12.22 μg/m3
PM10: 13.39 μg/m3
Carbon Monoxide: 178.89 μg/m3
Nitrogen Dioxide: 10.26 μg/m3
Sulphur Dioxide: 1.59 μg/m3
Ozone: 91.75 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:14 PM
Sunset: 8:34 PM
Daylight: 14 hrs 40 mins
Moonrise: 5:50 AM
Moon Transit: 1:36 PM
Moonset: 9:11 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

2:22 AM - 4:52 AM
1:06 PM - 3:36 PM

Minor Periods

8:41 PM - 10:11 PM
5:20 AM - 6:50 AM

Action Rating: 4 out of 5

Wednesday, July 15, 2026

Weather Forecast

Sunny
98.4°F
69°F
83.5°F
50%
0 in
2%
0%
6.5 mph
10.2


Air Quality

AQI: 1 - Good
PM2.5: 10.94 μg/m3
PM10: 11.36 μg/m3
Carbon Monoxide: 252.89 μg/m3
Nitrogen Dioxide: 9.81 μg/m3
Sulphur Dioxide: 1.61 μg/m3
Ozone: 62 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 1:14 PM
Sunset: 8:34 PM
Daylight: 14 hrs 38 mins
Moonrise: 7:09 AM
Moon Transit: 2:35 PM
Moonset: 9:47 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

3:23 AM - 5:53 AM
2:05 PM - 4:35 PM

Minor Periods

9:17 PM - 10:47 PM
6:39 AM - 8:09 AM

Action Rating: 4 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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