Water Temperature of Dead Run in McLean, VA

Current Water Temperature

70.7°F

Measurement Time: Thursday, September 10, 2026, 3:15 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

73°F
Slight Chance Rain Showers
Slight Chance Rain Showers
79%
SW 6 mph
66°F

Weather Forecast

Slight Chance Rain Showers then Partly Sunny
Today
89°F - Slight Chance Rain Showers then Partly Sunny
Chance Showers And Thunderstorms then Showers And Thunderstorms
Tonight
68°F - Chance Showers And Thunderstorms then Showers And Thunderstorms
Chance Rain Showers then Mostly Cloudy
Friday
83°F - Chance Rain Showers then Mostly Cloudy
Partly Cloudy
Friday Night
66°F - Partly Cloudy
Mostly Cloudy then Chance Showers And Thunderstorms
Saturday
84°F - Mostly Cloudy then Chance Showers And Thunderstorms
Showers And Thunderstorms Likely
Saturday Night
69°F - Showers And Thunderstorms Likely
Chance Rain Showers then Slight Chance Showers And Thunderstorms
Sunday
86°F - Chance Rain Showers then Slight Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms then Partly Cloudy
Sunday Night
67°F - Slight Chance Showers And Thunderstorms then Partly Cloudy
Mostly Sunny
Monday
86°F - Mostly Sunny
Partly Cloudy
Monday Night
66°F - Partly Cloudy
Sunny
Tuesday
88°F - Sunny
Mostly Clear
Tuesday Night
69°F - Mostly Clear
Mostly Sunny then Chance Showers And Thunderstorms
Wednesday
90°F - Mostly Sunny then Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Wednesday Night
67°F - Chance Showers And Thunderstorms

Astronomical

Sunrise: 6:46 AM
Sun Transit: 1:05 PM
Sunset: 7:25 PM
Daylight: 12 hrs 39 mins
Moonrise: 6:06 AM
Moon Transit: 12:42 AM
Moonset: 7:08 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:34 AM - 4:04 AM
12:12 AM - 2:42 PM

Minor Periods

6:38 PM - 8:08 PM
5:36 AM - 7:06 AM

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: 6:46 AM
Sun Transit: 1:05 PM
Sunset: 7:25 PM
Daylight: 12 hrs 39 mins
Moonrise: 6:06 AM
Moon Transit: 12:42 AM
Moonset: 7:08 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:34 AM - 4:04 AM
12:12 AM - 2:42 PM

Minor Periods

6:38 PM - 8:08 PM
5:36 AM - 7:06 AM

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: 6:46 AM
Sun Transit: 1:05 PM
Sunset: 7:25 PM
Daylight: 12 hrs 39 mins
Moonrise: 6:06 AM
Moon Transit: 12:42 AM
Moonset: 7:08 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:34 AM - 4:04 AM
12:12 AM - 2:42 PM

Minor Periods

6:38 PM - 8:08 PM
5:36 AM - 7:06 AM

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: 6:47 AM
Sun Transit: 1:05 PM
Sunset: 7:23 PM
Daylight: 12 hrs 36 mins
Moonrise: 7:15 AM
Moon Transit: 1:28 PM
Moonset: 7:31 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

2:21 AM - 4:51 AM
12:58 AM - 3:28 PM

Minor Periods

7:01 PM - 8:31 PM
6:45 AM - 8:15 AM

Action Rating: 5 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: 6:47 AM
Sun Transit: 1:05 PM
Sunset: 7:23 PM
Daylight: 12 hrs 36 mins
Moonrise: 7:15 AM
Moon Transit: 1:28 PM
Moonset: 7:31 PM
Moon Phase: New
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

2:21 AM - 4:51 AM
12:58 AM - 3:28 PM

Minor Periods

7:01 PM - 8:31 PM
6:45 AM - 8:15 AM

Action Rating: 5 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: 6:48 AM
Sun Transit: 1:04 PM
Sunset: 7:21 PM
Daylight: 12 hrs 34 mins
Moonrise: 8:23 AM
Moon Transit: 2:13 PM
Moonset: 7:55 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:07 AM - 5:37 AM
1:43 PM - 4:13 PM

Minor Periods

7:25 PM - 8:55 PM
7:53 AM - 9:23 AM

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: 6:48 AM
Sun Transit: 1:04 PM
Sunset: 7:21 PM
Daylight: 12 hrs 34 mins
Moonrise: 8:23 AM
Moon Transit: 2:13 PM
Moonset: 7:55 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

3:07 AM - 5:37 AM
1:43 PM - 4:13 PM

Minor Periods

7:25 PM - 8:55 PM
7:53 AM - 9:23 AM

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: 6:49 AM
Sun Transit: 1:04 PM
Sunset: 7:20 PM
Daylight: 12 hrs 31 mins
Moonrise: 9:29 AM
Moon Transit: 2:58 PM
Moonset: 8:21 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

3:52 AM - 6:22 AM
2:28 PM - 4:58 PM

Minor Periods

7:51 PM - 9:21 PM
8:59 AM - 10:29 AM

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: 6:49 AM
Sun Transit: 1:04 PM
Sunset: 7:20 PM
Daylight: 12 hrs 31 mins
Moonrise: 9:29 AM
Moon Transit: 2:58 PM
Moonset: 8:21 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

3:52 AM - 6:22 AM
2:28 PM - 4:58 PM

Minor Periods

7:51 PM - 9:21 PM
8:59 AM - 10:29 AM

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: 6:49 AM
Sun Transit: 1:04 PM
Sunset: 7:18 PM
Daylight: 12 hrs 29 mins
Moonrise: 10:35 AM
Moon Transit: 3:44 PM
Moonset: 8:48 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

4:37 AM - 7:07 AM
3:14 PM - 5:44 PM

Minor Periods

8:18 PM - 9:48 PM
10:05 AM - 11:35 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: 6:49 AM
Sun Transit: 1:04 PM
Sunset: 7:18 PM
Daylight: 12 hrs 29 mins
Moonrise: 10:35 AM
Moon Transit: 3:44 PM
Moonset: 8:48 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

4:37 AM - 7:07 AM
3:14 PM - 5:44 PM

Minor Periods

8:18 PM - 9:48 PM
10:05 AM - 11:35 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: 6:50 AM
Sun Transit: 1:03 PM
Sunset: 7:17 PM
Daylight: 12 hrs 26 mins
Moonrise: 11:39 AM
Moon Transit: 4:32 PM
Moonset: 9:19 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

5:24 AM - 7:54 AM
4:02 PM - 6:32 PM

Minor Periods

8:49 PM - 10:19 PM
11:09 AM - 12:39 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: 6:50 AM
Sun Transit: 1:03 PM
Sunset: 7:17 PM
Daylight: 12 hrs 26 mins
Moonrise: 11:39 AM
Moon Transit: 4:32 PM
Moonset: 9:19 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

5:24 AM - 7:54 AM
4:02 PM - 6:32 PM

Minor Periods

8:49 PM - 10:19 PM
11:09 AM - 12:39 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: 6:51 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

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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