Water Temperature of Dead Run in McLean, VA

Current Water Temperature

64.9°F

Measurement Time: Tuesday, September 29, 2026, 2:15 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

71°F
Slight Chance Rain Showers
Slight Chance Rain Showers
68%
W 2 mph
60°F

Weather Forecast

Slight Chance Rain Showers then Patchy Fog
Tonight
59°F - Slight Chance Rain Showers then Patchy Fog
Patchy Fog then Mostly Sunny
Wednesday
81°F - Patchy Fog then Mostly Sunny
Mostly Cloudy
Wednesday Night
64°F - Mostly Cloudy
Mostly Sunny
Thursday
84°F - Mostly Sunny
Mostly Clear
Thursday Night
65°F - Mostly Clear
Mostly Sunny
Friday
88°F - Mostly Sunny
Chance Rain Showers
Friday Night
63°F - Chance Rain Showers
Chance Rain Showers
Saturday
72°F - Chance Rain Showers
Rain Showers Likely
Saturday Night
59°F - Rain Showers Likely
Rain Showers Likely
Sunday
67°F - Rain Showers Likely
Chance Rain Showers
Sunday Night
56°F - Chance Rain Showers
Slight Chance Rain Showers then Mostly Sunny
Monday
68°F - Slight Chance Rain Showers then Mostly Sunny
Partly Cloudy
Monday Night
49°F - Partly Cloudy
Sunny
Tuesday
62°F - Sunny

Astronomical

Sunrise: 7:03 AM
Sun Transit: 12:58 AM
Sunset: 6:55 PM
Daylight: 11 hrs 52 mins
Moonrise: 8:20 PM
Moon Transit: 2:58 AM
Moonset: 10:26 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:28 AM - 4:58 AM
4:42 PM - 7:12 PM

Minor Periods

7:50 PM - 9:20 PM
9:56 AM - 11:26 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 12:58 AM
Sunset: 6:55 PM
Daylight: 11 hrs 52 mins
Moonrise: 8:20 PM
Moon Transit: 2:58 AM
Moonset: 10:26 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.4%

Best Times for Fishing or Hunting

Major Periods

2:28 AM - 4:58 AM
4:42 PM - 7:12 PM

Minor Periods

7:50 PM - 9:20 PM
9:56 AM - 11:26 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 12:58 AM
Sunset: 6:53 PM
Daylight: 11 hrs 49 mins
Moonrise: 9:03 PM
Moon Transit: 3:54 AM
Moonset: 11:41 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:24 AM - 5:54 AM
5:41 PM - 8:11 PM

Minor Periods

8:33 PM - 10:03 PM
11:11 AM - 12:41 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 12:58 AM
Sunset: 6:53 PM
Daylight: 11 hrs 49 mins
Moonrise: 9:03 PM
Moon Transit: 3:54 AM
Moonset: 11:41 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.5%

Best Times for Fishing or Hunting

Major Periods

3:24 AM - 5:54 AM
5:41 PM - 8:11 PM

Minor Periods

8:33 PM - 10:03 PM
11:11 AM - 12:41 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:58 AM
Sunset: 6:51 PM
Daylight: 11 hrs 47 mins
Moonrise: 9:57 PM
Moon Transit: 4:54 AM
Moonset: 12:53 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:24 AM - 6:54 AM
6:43 PM - 9:13 PM

Minor Periods

9:27 PM - 10:57 PM
12:23 AM - 1:53 PM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:58 AM
Sunset: 6:51 PM
Daylight: 11 hrs 47 mins
Moonrise: 9:57 PM
Moon Transit: 4:54 AM
Moonset: 12:53 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.3%

Best Times for Fishing or Hunting

Major Periods

4:24 AM - 6:54 AM
6:43 PM - 9:13 PM

Minor Periods

9:27 PM - 10:57 PM
12:23 AM - 1:53 PM

Action Rating: 4 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:57 AM
Sunset: 6:50 PM
Daylight: 11 hrs 44 mins
Moonrise: 11:01 PM
Moon Transit: 5:57 AM
Moonset: 1:58 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:27 AM - 7:57 AM
7:45 PM - 10:15 PM

Minor Periods

12:00 AM - 12:00 AM
1:28 PM - 2:58 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:57 AM
Sunset: 6:50 PM
Daylight: 11 hrs 44 mins
Moonrise: 11:01 PM
Moon Transit: 5:57 AM
Moonset: 1:58 PM
Moon Phase: Last Quarter
Moon Illumination: 55.3%

Best Times for Fishing or Hunting

Major Periods

5:27 AM - 7:57 AM
7:45 PM - 10:15 PM

Minor Periods

12:00 AM - 12:00 AM
1:28 PM - 2:58 PM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:57 AM
Sunset: 6:48 PM
Daylight: 11 hrs 42 mins
Moonrise: 12:01 AM
Moon Transit: 7:00 AM
Moonset: 2:53 PM
Moon Phase: Last Quarter
Moon Illumination: 43.9%

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
8:47 PM - 11:17 PM

Minor Periods

2:23 PM - 3:53 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:57 AM
Sunset: 6:48 PM
Daylight: 11 hrs 42 mins
Moonrise: 12:01 AM
Moon Transit: 7:00 AM
Moonset: 2:53 PM
Moon Phase: Last Quarter
Moon Illumination: 43.9%

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
8:47 PM - 11:17 PM

Minor Periods

2:23 PM - 3:53 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:57 AM
Sunset: 6:47 PM
Daylight: 11 hrs 39 mins
Moonrise: 12:12 AM
Moon Transit: 8:00 AM
Moonset: 3:38 PM
Moon Phase: Last Quarter
Moon Illumination: 32.9%

Best Times for Fishing or Hunting

Major Periods

7:30 AM - 10:00 AM
12:00 AM - 12:00 AM

Minor Periods

3:08 PM - 4:38 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:57 AM
Sunset: 6:47 PM
Daylight: 11 hrs 39 mins
Moonrise: 12:12 AM
Moon Transit: 8:00 AM
Moonset: 3:38 PM
Moon Phase: Last Quarter
Moon Illumination: 32.9%

Best Times for Fishing or Hunting

Major Periods

7:30 AM - 10:00 AM
12:00 AM - 12:00 AM

Minor Periods

3:08 PM - 4:38 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:57 AM
Sunset: 6:45 PM
Daylight: 11 hrs 37 mins
Moonrise: 1:26 AM
Moon Transit: 8:56 AM
Moonset: 4:14 PM
Moon Phase: Last Quarter
Moon Illumination: 22.8%

Best Times for Fishing or Hunting

Major Periods

8:26 AM - 10:56 AM
12:00 AM - 12:00 AM

Minor Periods

3:44 PM - 5:14 PM
12:56 AM - 2:26 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:57 AM
Sunset: 6:45 PM
Daylight: 11 hrs 37 mins
Moonrise: 1:26 AM
Moon Transit: 8:56 AM
Moonset: 4:14 PM
Moon Phase: Last Quarter
Moon Illumination: 22.8%

Best Times for Fishing or Hunting

Major Periods

8:26 AM - 10:56 AM
12:00 AM - 12:00 AM

Minor Periods

3:44 PM - 5:14 PM
12:56 AM - 2:26 AM

Action Rating: 2 out of 5

Wednesday, December 31, 1969

Weather Forecast

°F
°F
°F
%
in
%
%
mph


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:56 AM
Sunset: 6:44 PM
Daylight: 11 hrs 34 mins
Moonrise: 2:40 AM
Moon Transit: 9:47 AM
Moonset: 4:44 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:17 AM - 11:47 AM

Minor Periods

4:14 PM - 5:44 PM
2:10 AM - 3:40 AM

Action Rating: 2 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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