Water Temperature of Dead Run in McLean, VA

Current Water Temperature

73.8°F

Measurement Time: Tuesday, September 1, 2026, 12:15 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

75°F
Mostly Cloudy
Mostly Cloudy
90%
SW 3 mph
72°F

Weather Forecast

Mostly Cloudy
Overnight
75°F - Mostly Cloudy
Mostly Sunny then Slight Chance Showers And Thunderstorms
Tuesday
92°F - Mostly Sunny then Slight Chance Showers And Thunderstorms
Slight Chance Showers And Thunderstorms
Tuesday Night
76°F - Slight Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Wednesday
90°F - Chance Showers And Thunderstorms
Chance Showers And Thunderstorms
Wednesday Night
74°F - Chance Showers And Thunderstorms
Slight Chance Rain Showers then Scattered Showers And Thunderstorms
Thursday
93°F - Slight Chance Rain Showers then Scattered Showers And Thunderstorms
Chance Showers And Thunderstorms
Thursday Night
74°F - Chance Showers And Thunderstorms
Chance Rain Showers
Friday
92°F - Chance Rain Showers
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Friday Night
70°F - Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
Mostly Sunny
Saturday
86°F - Mostly Sunny
Partly Cloudy
Saturday Night
66°F - Partly Cloudy
Mostly Sunny
Sunday
84°F - Mostly Sunny
Partly Cloudy
Sunday Night
64°F - Partly Cloudy
Chance Rain Showers
Labor Day
84°F - Chance Rain Showers

Astronomical

Sunrise: 6:38 AM
Sun Transit: 1:08 PM
Sunset: 7:39 PM
Daylight: 13 hrs 1 mins
Moonrise: 9:42 PM
Moon Transit: 4:12 AM
Moonset: 11:24 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:42 AM - 6:12 AM
5:53 PM - 8:23 PM

Minor Periods

9:12 PM - 10:42 PM
10:54 AM - 12:24 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: 6:38 AM
Sun Transit: 1:08 PM
Sunset: 7:39 PM
Daylight: 13 hrs 1 mins
Moonrise: 9:42 PM
Moon Transit: 4:12 AM
Moonset: 11:24 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:42 AM - 6:12 AM
5:53 PM - 8:23 PM

Minor Periods

9:12 PM - 10:42 PM
10:54 AM - 12:24 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: 6:38 AM
Sun Transit: 1:08 PM
Sunset: 7:39 PM
Daylight: 13 hrs 1 mins
Moonrise: 9:42 PM
Moon Transit: 4:12 AM
Moonset: 11:24 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:42 AM - 6:12 AM
5:53 PM - 8:23 PM

Minor Periods

9:12 PM - 10:42 PM
10:54 AM - 12:24 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: 6:38 AM
Sun Transit: 1:08 PM
Sunset: 7:39 PM
Daylight: 13 hrs 1 mins
Moonrise: 9:42 PM
Moon Transit: 4:12 AM
Moonset: 11:24 AM
Moon Phase: Waning Gibbous
Moon Illumination: 71.2%

Best Times for Fishing or Hunting

Major Periods

3:42 AM - 6:12 AM
5:53 PM - 8:23 PM

Minor Periods

9:12 PM - 10:42 PM
10:54 AM - 12:24 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: 6:39 AM
Sun Transit: 1:08 PM
Sunset: 7:37 PM
Daylight: 12 hrs 58 mins
Moonrise: 10:19 PM
Moon Transit: 5:03 AM
Moonset: 12:38 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:33 AM - 7:03 AM
6:48 PM - 9:18 PM

Minor Periods

9:49 PM - 11:19 PM
12:08 AM - 1:38 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: 6:39 AM
Sun Transit: 1:08 PM
Sunset: 7:37 PM
Daylight: 12 hrs 58 mins
Moonrise: 10:19 PM
Moon Transit: 5:03 AM
Moonset: 12:38 AM
Moon Phase: Waning Gibbous
Moon Illumination: 60.5%

Best Times for Fishing or Hunting

Major Periods

4:33 AM - 7:03 AM
6:48 PM - 9:18 PM

Minor Periods

9:49 PM - 11:19 PM
12:08 AM - 1:38 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: 6:40 AM
Sun Transit: 1:08 PM
Sunset: 7:36 PM
Daylight: 12 hrs 56 mins
Moonrise: 11:05 PM
Moon Transit: 6:00 AM
Moonset: 1:51 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:30 AM - 8:00 AM
7:46 PM - 10:16 PM

Minor Periods

12:00 AM - 12:00 AM
1:21 PM - 2:51 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: 6:40 AM
Sun Transit: 1:08 PM
Sunset: 7:36 PM
Daylight: 12 hrs 56 mins
Moonrise: 11:05 PM
Moon Transit: 6:00 AM
Moonset: 1:51 PM
Moon Phase: Last Quarter
Moon Illumination: 49.2%

Best Times for Fishing or Hunting

Major Periods

5:30 AM - 8:00 AM
7:46 PM - 10:16 PM

Minor Periods

12:00 AM - 12:00 AM
1:21 PM - 2:51 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: 6:41 AM
Sun Transit: 1:07 PM
Sunset: 7:34 PM
Daylight: 12 hrs 54 mins
Moonrise: 12:05 AM
Moon Transit: 7:00 AM
Moonset: 3:01 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
8:48 PM - 11:18 PM

Minor Periods

2:31 PM - 4:01 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: 6:41 AM
Sun Transit: 1:07 PM
Sunset: 7:34 PM
Daylight: 12 hrs 54 mins
Moonrise: 12:05 AM
Moon Transit: 7:00 AM
Moonset: 3:01 PM
Moon Phase: Last Quarter
Moon Illumination: 38.0%

Best Times for Fishing or Hunting

Major Periods

6:30 AM - 9:00 AM
8:48 PM - 11:18 PM

Minor Periods

2:31 PM - 4:01 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: 6:41 AM
Sun Transit: 1:07 PM
Sunset: 7:33 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:02 AM
Moon Transit: 8:03 AM
Moonset: 4:04 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:33 AM - 10:03 AM
12:00 AM - 12:00 AM

Minor Periods

3:34 PM - 5:04 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: 6:41 AM
Sun Transit: 1:07 PM
Sunset: 7:33 PM
Daylight: 12 hrs 51 mins
Moonrise: 12:02 AM
Moon Transit: 8:03 AM
Moonset: 4:04 PM
Moon Phase: Last Quarter
Moon Illumination: 27.4%

Best Times for Fishing or Hunting

Major Periods

7:33 AM - 10:03 AM
12:00 AM - 12:00 AM

Minor Periods

3:34 PM - 5:04 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: 6:42 AM
Sun Transit: 1:07 PM
Sunset: 7:31 PM
Daylight: 12 hrs 49 mins
Moonrise: 1:09 AM
Moon Transit: 9:06 AM
Moonset: 4:56 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:36 AM - 11:06 AM
12:00 AM - 12:00 AM

Minor Periods

4:26 PM - 5:56 PM
12:39 AM - 2:09 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: 6:42 AM
Sun Transit: 1:07 PM
Sunset: 7:31 PM
Daylight: 12 hrs 49 mins
Moonrise: 1:09 AM
Moon Transit: 9:06 AM
Moonset: 4:56 PM
Moon Phase: Last Quarter
Moon Illumination: 18.0%

Best Times for Fishing or Hunting

Major Periods

8:36 AM - 11:06 AM
12:00 AM - 12:00 AM

Minor Periods

4:26 PM - 5:56 PM
12:39 AM - 2:09 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: 6:43 AM
Sun Transit: 1:06 PM
Sunset: 7:29 PM
Daylight: 12 hrs 46 mins
Moonrise: 2:23 AM
Moon Transit: 10:06 AM
Moonset: 5:38 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:36 AM - 12:06 AM

Minor Periods

5:08 PM - 6:38 PM
1:53 AM - 3:23 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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