Water Temperature of Dead Run in McLean, VA

Current Water Temperature

65.8°F

Measurement Time: Wednesday, September 16, 2026, 6:15 AM 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

78°F
Sunny
Sunny
54%
S 6 mph
60°F

Weather Forecast

Sunny
Today
86°F - Sunny
Partly Cloudy
Tonight
66°F - Partly Cloudy
Mostly Sunny
Thursday
89°F - Mostly Sunny
Chance Showers And Thunderstorms
Thursday Night
71°F - Chance Showers And Thunderstorms
Partly Sunny
Friday
85°F - Partly Sunny
Partly Cloudy
Friday Night
62°F - Partly Cloudy
Mostly Sunny
Saturday
81°F - Mostly Sunny
Mostly Cloudy
Saturday Night
65°F - Mostly Cloudy
Showers And Thunderstorms Likely
Sunday
83°F - Showers And Thunderstorms Likely
Showers And Thunderstorms Likely
Sunday Night
66°F - Showers And Thunderstorms Likely
Chance Rain Showers
Monday
80°F - Chance Rain Showers
Chance Showers And Thunderstorms
Monday Night
65°F - Chance Showers And Thunderstorms
Chance Rain Showers
Tuesday
79°F - Chance Rain Showers
Chance Showers And Thunderstorms
Tuesday Night
63°F - Chance Showers And Thunderstorms

Astronomical

Sunrise: 6:51 AM
Sun Transit: 1:03 PM
Sunset: 7:15 PM
Daylight: 12 hrs 24 mins
Moonrise: 12:43 AM
Moon Transit: 5:21 PM
Moonset: 9:56 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

6:13 AM - 8:43 AM
4:51 PM - 7:21 PM

Minor Periods

9:26 PM - 10:56 PM
12:13 AM - 1:43 PM

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: 6:51 AM
Sun Transit: 1:03 PM
Sunset: 7:15 PM
Daylight: 12 hrs 24 mins
Moonrise: 12:43 AM
Moon Transit: 5:21 PM
Moonset: 9:56 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

6:13 AM - 8:43 AM
4:51 PM - 7:21 PM

Minor Periods

9:26 PM - 10:56 PM
12:13 AM - 1:43 PM

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: 6:51 AM
Sun Transit: 1:03 PM
Sunset: 7:15 PM
Daylight: 12 hrs 24 mins
Moonrise: 12:43 AM
Moon Transit: 5:21 PM
Moonset: 9:56 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

6:13 AM - 8:43 AM
4:51 PM - 7:21 PM

Minor Periods

9:26 PM - 10:56 PM
12:13 AM - 1:43 PM

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: 6:52 AM
Sun Transit: 1:03 PM
Sunset: 7:13 PM
Daylight: 12 hrs 21 mins
Moonrise: 1:43 PM
Moon Transit: 6:12 PM
Moonset: 10:40 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

7:03 AM - 9:33 AM
5:42 PM - 8:12 PM

Minor Periods

10:10 PM - 11:40 PM
1:13 PM - 2:43 PM

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: 6:52 AM
Sun Transit: 1:03 PM
Sunset: 7:13 PM
Daylight: 12 hrs 21 mins
Moonrise: 1:43 PM
Moon Transit: 6:12 PM
Moonset: 10:40 PM
Moon Phase: Waxing Crescent
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

7:03 AM - 9:33 AM
5:42 PM - 8:12 PM

Minor Periods

10:10 PM - 11:40 PM
1:13 PM - 2:43 PM

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: 6:53 AM
Sun Transit: 1:02 PM
Sunset: 7:12 PM
Daylight: 12 hrs 19 mins
Moonrise: 2:38 PM
Moon Transit: 7:04 PM
Moonset: 11:30 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

7:54 AM - 10:24 AM
6:34 PM - 9:04 PM

Minor Periods

12:00 AM - 12:00 AM
2:08 PM - 3:38 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: 6:53 AM
Sun Transit: 1:02 PM
Sunset: 7:12 PM
Daylight: 12 hrs 19 mins
Moonrise: 2:38 PM
Moon Transit: 7:04 PM
Moonset: 11:30 PM
Moon Phase: First Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

7:54 AM - 10:24 AM
6:34 PM - 9:04 PM

Minor Periods

12:00 AM - 12:00 AM
2:08 PM - 3:38 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: 6:54 AM
Sun Transit: 1:02 PM
Sunset: 7:10 PM
Daylight: 12 hrs 16 mins
Moonrise: 3:26 PM
Moon Transit: 7:55 PM
Moonset: 12:30 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

8:46 AM - 11:16 AM
7:25 PM - 9:55 PM

Minor Periods

2:56 PM - 4:26 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: 6:54 AM
Sun Transit: 1:02 PM
Sunset: 7:10 PM
Daylight: 12 hrs 16 mins
Moonrise: 3:26 PM
Moon Transit: 7:55 PM
Moonset: 12:30 AM
Moon Phase: First Quarter
Moon Illumination: 54.3%

Best Times for Fishing or Hunting

Major Periods

8:46 AM - 11:16 AM
7:25 PM - 9:55 PM

Minor Periods

2:56 PM - 4:26 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: 6:55 AM
Sun Transit: 1:02 PM
Sunset: 7:09 PM
Daylight: 12 hrs 14 mins
Moonrise: 4:07 PM
Moon Transit: 8:45 PM
Moonset: 12:27 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

9:36 AM - 12:06 AM
8:15 PM - 10:45 PM

Minor Periods

3:37 PM - 5:07 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: 6:55 AM
Sun Transit: 1:02 PM
Sunset: 7:09 PM
Daylight: 12 hrs 14 mins
Moonrise: 4:07 PM
Moon Transit: 8:45 PM
Moonset: 12:27 AM
Moon Phase: First Quarter
Moon Illumination: 65.4%

Best Times for Fishing or Hunting

Major Periods

9:36 AM - 12:06 AM
8:15 PM - 10:45 PM

Minor Periods

3:37 PM - 5:07 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: 6:56 AM
Sun Transit: 1:01 PM
Sunset: 7:07 PM
Daylight: 12 hrs 11 mins
Moonrise: 4:42 PM
Moon Transit: 9:33 PM
Moonset: 1:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

10:25 AM - 12:55 AM
9:03 PM - 11:33 PM

Minor Periods

4:12 PM - 5:42 PM
12:58 AM - 2:28 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: 6:56 AM
Sun Transit: 1:01 PM
Sunset: 7:07 PM
Daylight: 12 hrs 11 mins
Moonrise: 4:42 PM
Moon Transit: 9:33 PM
Moonset: 1:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 75.7%

Best Times for Fishing or Hunting

Major Periods

10:25 AM - 12:55 AM
9:03 PM - 11:33 PM

Minor Periods

4:12 PM - 5:42 PM
12:58 AM - 2:28 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: 6:57 AM
Sun Transit: 1:01 PM
Sunset: 7:06 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:11 PM
Moon Transit: 10:19 PM
Moonset: 2:32 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

11:12 AM - 1:42 PM
12:00 AM - 12:00 AM

Minor Periods

4:41 PM - 6:11 PM
2:02 AM - 3:32 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: 6:57 AM
Sun Transit: 1:01 PM
Sunset: 7:06 PM
Daylight: 12 hrs 9 mins
Moonrise: 5:11 PM
Moon Transit: 10:19 PM
Moonset: 2:32 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 84.7%

Best Times for Fishing or Hunting

Major Periods

11:12 AM - 1:42 PM
12:00 AM - 12:00 AM

Minor Periods

4:41 PM - 6:11 PM
2:02 AM - 3:32 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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