Water Temperature of Dead Run in McLean, VA

Current Water Temperature

43.0°F

Measurement Time: Friday, January 9, 2026, 3:00 PM EST

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

48.9°F
Light rain
Light rain
44.7°F
54.4°F
97%
SSW 9.8 mph
17.2 mph
51.1°F
49°F
0 in
100%
6 mi
1019 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Fri
H: 55°F
L: 38°F
Moderate rain
Sat
H: 46°F
L: 42°F
Partly Cloudy
Sun
H: 44°F
L: 30°F
Sunny
Mon
H: 45°F
L: 27°F
Partly Cloudy
Tue
H: 49°F
L: 33°F

Air Quality

AQI: 1 - Good
PM2.5: 12.25 μg/m3
PM10: 12.25 μg/m3
Carbon Monoxide: 285.85 μg/m3
Nitrogen Dioxide: 33.05 μg/m3
Sulphur Dioxide: 5.25 μg/m3
Ozone: 14 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:15 AM
Sunset: 5:05 PM
Daylight: 9 hrs 37 mins
Moonrise: 12:07 AM
Moon Transit: 5:08 AM
Moonset: 11:00 AM
Moon Phase: Waning Gibbous
Moon Illumination: 57.8%

Best Times for Fishing or Hunting

Major Periods

4:38 AM - 7:08 AM
6:44 PM - 9:14 PM

Minor Periods

10:30 AM - 12:00 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

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

Effective: Fri January 9, 2026, 7:27 PM
Expires: Fri January 9, 2026, 7:37 PM

Monitoring message only. Please disregard.

Monitoring message only. Please disregard.
Friday, January 9, 2026

Weather Forecast

Patchy rain nearby
54.9°F
37.8°F
47.3°F
79%
0.03 in
87%
0%
11.4 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 13.83 μg/m3
PM10: 14.45 μg/m3
Carbon Monoxide: 288.01 μg/m3
Nitrogen Dioxide: 26.99 μg/m3
Sulphur Dioxide: 8.41 μg/m3
Ozone: 29.32 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:15 AM
Sunset: 5:05 PM
Daylight: 9 hrs 37 mins
Moonrise: 12:07 AM
Moon Transit: 5:08 AM
Moonset: 11:00 AM
Moon Phase: Waning Gibbous
Moon Illumination: 57.8%

Best Times for Fishing or Hunting

Major Periods

4:38 AM - 7:08 AM
6:44 PM - 9:14 PM

Minor Periods

10:30 AM - 12:00 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Saturday, January 10, 2026

Weather Forecast

Moderate rain
45.9°F
42.1°F
45.2°F
92%
0.76 in
89%
0%
6.5 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 10.25 μg/m3
PM10: 10.32 μg/m3
Carbon Monoxide: 316.81 μg/m3
Nitrogen Dioxide: 32.71 μg/m3
Sulphur Dioxide: 7.32 μg/m3
Ozone: 16.68 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:16 AM
Sunset: 5:06 PM
Daylight: 9 hrs 38 mins
Moonrise: 12:09 AM
Moon Transit: 5:49 AM
Moonset: 11:21 AM
Moon Phase: Last Quarter
Moon Illumination: 46.5%

Best Times for Fishing or Hunting

Major Periods

5:19 AM - 7:49 AM
7:26 PM - 9:56 PM

Minor Periods

10:51 AM - 12:21 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Sunday, January 11, 2026

Weather Forecast

Partly Cloudy
44.1°F
30.3°F
39.5°F
67%
0 in
0%
0%
17.7 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 7.26 μg/m3
PM10: 7.54 μg/m3
Carbon Monoxide: 270.25 μg/m3
Nitrogen Dioxide: 20.27 μg/m3
Sulphur Dioxide: 8.24 μg/m3
Ozone: 44.52 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:16 AM
Sunset: 5:07 PM
Daylight: 9 hrs 40 mins
Moonrise: 1:10 AM
Moon Transit: 6:31 AM
Moonset: 11:45 AM
Moon Phase: Last Quarter
Moon Illumination: 35.3%

Best Times for Fishing or Hunting

Major Periods

6:01 AM - 8:31 AM
8:08 PM - 10:38 PM

Minor Periods

11:15 AM - 12:45 AM
12:40 AM - 2:10 AM

Action Rating: 2 out of 5

Monday, January 12, 2026

Weather Forecast

Sunny
44.8°F
26.6°F
34.2°F
59%
0 in
0%
0%
14.1 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 4.89 μg/m3
PM10: 4.99 μg/m3
Carbon Monoxide: 195.61 μg/m3
Nitrogen Dioxide: 13.73 μg/m3
Sulphur Dioxide: 7.34 μg/m3
Ozone: 56.72 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:17 AM
Sunset: 5:08 PM
Daylight: 9 hrs 41 mins
Moonrise: 2:12 AM
Moon Transit: 7:15 AM
Moonset: 12:12 AM
Moon Phase: Last Quarter
Moon Illumination: 25.0%

Best Times for Fishing or Hunting

Major Periods

6:45 AM - 9:15 AM
8:53 PM - 11:23 PM

Minor Periods

11:42 AM - 1:12 PM
1:42 AM - 3:12 AM

Action Rating: 2 out of 5

Tuesday, January 13, 2026

Weather Forecast

Partly Cloudy
48.7°F
32.9°F
39.8°F
51%
0 in
0%
0%
13.2 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 8.07 μg/m3
PM10: 8.18 μg/m3
Carbon Monoxide: 246.18 μg/m3
Nitrogen Dioxide: 26.1 μg/m3
Sulphur Dioxide: 7.4 μg/m3
Ozone: 32.69 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:17 AM
Sunset: 5:09 PM
Daylight: 9 hrs 42 mins
Moonrise: 3:13 AM
Moon Transit: 8:01 AM
Moonset: 12:44 AM
Moon Phase: Waning Crescent
Moon Illumination: 15.9%

Best Times for Fishing or Hunting

Major Periods

7:31 AM - 10:01 AM
12:00 AM - 12:00 AM

Minor Periods

12:14 AM - 1:44 PM
2:43 AM - 4:13 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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