Water Temperature of Dead Run in McLean, VA

Current Water Temperature

68.0°F

Measurement Time: Tuesday, May 19, 2026, 1:00 AM EDT

Temperature Locations

View Nearby Locations     View All Virginia Locations     View Locations Near Me

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

72°F
Partly cloudy
Partly cloudy
76.3°F
77.5°F
76%
SW 3.8 mph
8 mph
74.8°F
58.2°F
0 in
75%
9 mi
1019 mbar
0

Five Day Weather Forecast

Sunny
Tue
H: 103°F
L: 74°F
Moderate rain
Wed
H: 94°F
L: 67°F
Moderate rain
Thu
H: 58°F
L: 51°F
Heavy rain
Fri
H: 53°F
L: 51°F
Moderate rain
Sat
H: 56°F
L: 53°F

Air Quality

AQI: 1 - Good
PM2.5: 12.05 μg/m3
PM10: 14.45 μg/m3
Carbon Monoxide: 176.85 μg/m3
Nitrogen Dioxide: 8.95 μg/m3
Sulphur Dioxide: 2.45 μg/m3
Ozone: 95 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:05 PM
Sunset: 8:18 PM
Daylight: 14 hrs 26 mins
Moonrise: 8:10 AM
Moon Transit: 4:09 PM
Moonset: 12:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 7.4%

Best Times for Fishing or Hunting

Major Periods

4:54 AM - 7:24 AM
3:39 PM - 6:09 PM

Minor Periods

7:40 AM - 9:10 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

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

Effective: Tue May 19, 2026, 2:27 AM
Expires: Tue May 19, 2026, 2:37 AM

Monitoring message only. Please disregard.

Monitoring message only. Please disregard.


Air Quality Alert issued May 18 at 4:40PM EDT by NWS Baltimore MD/Washington DC

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Mon May 18, 2026, 4:40 PM
Expires: Wed May 20, 2026, 12:00 AM

The Maryland Department of the Environment has issued a Code ORANGE Air Quality Alert Tuesday for the Baltimore City Metro and Annapolis region. A Code Orange Air Quality Alert means that air pollution concentrations within the region may become unhealthy for sensitive groups. Sensitive groups include children, people suffering from asthma, heart disease or other lung diseases and the elderly. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles visit the web site mde.maryland.gov/programs/air/AirQualityMonitoring/Pages/index.aspx


Tuesday, May 19, 2026

Weather Forecast

Sunny
102.7°F
73.9°F
85.8°F
40%
0 in
0%
0%
11.2 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 10.37 μg/m3
PM10: 12.77 μg/m3
Carbon Monoxide: 164.65 μg/m3
Nitrogen Dioxide: 6.41 μg/m3
Sulphur Dioxide: 2.02 μg/m3
Ozone: 105.24 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:05 PM
Sunset: 8:18 PM
Daylight: 14 hrs 26 mins
Moonrise: 8:10 AM
Moon Transit: 4:09 PM
Moonset: 12:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 7.4%

Best Times for Fishing or Hunting

Major Periods

4:54 AM - 7:24 AM
3:39 PM - 6:09 PM

Minor Periods

7:40 AM - 9:10 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, May 20, 2026

Weather Forecast

Moderate rain
94.3°F
67°F
77.8°F
60%
0.37 in
84%
0%
13.9 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 8.52 μg/m3
PM10: 9.81 μg/m3
Carbon Monoxide: 164.49 μg/m3
Nitrogen Dioxide: 7.14 μg/m3
Sulphur Dioxide: 2.05 μg/m3
Ozone: 91.8 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:05 PM
Sunset: 8:19 PM
Daylight: 14 hrs 28 mins
Moonrise: 9:25 AM
Moon Transit: 5:11 PM
Moonset: 12:03 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

5:58 AM - 8:28 AM
4:41 PM - 7:11 PM

Minor Periods

8:55 AM - 10:25 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Thursday, May 21, 2026

Weather Forecast

Moderate rain
57.6°F
51.1°F
55.4°F
90%
0.32 in
86%
0%
8.5 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 6.63 μg/m3
PM10: 6.87 μg/m3
Carbon Monoxide: 187.18 μg/m3
Nitrogen Dioxide: 13.45 μg/m3
Sulphur Dioxide: 2.91 μg/m3
Ozone: 56.52 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:05 PM
Sunset: 8:20 PM
Daylight: 14 hrs 29 mins
Moonrise: 10:41 AM
Moon Transit: 6:07 PM
Moonset: 12:48 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%

Best Times for Fishing or Hunting

Major Periods

6:57 AM - 9:27 AM
5:37 PM - 8:07 PM

Minor Periods

10:11 AM - 11:41 AM
12:18 AM - 1:48 AM

Action Rating: 3 out of 5

Friday, May 22, 2026

Weather Forecast

Heavy rain
52.7°F
51.4°F
52.2°F
98%
1.01 in
74%
0%
7.4 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 10.02 μg/m3
PM10: 10.98 μg/m3
Carbon Monoxide: 220.65 μg/m3
Nitrogen Dioxide: 21.1 μg/m3
Sulphur Dioxide: 2.66 μg/m3
Ozone: 52.6 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:05 PM
Sunset: 8:21 PM
Daylight: 14 hrs 31 mins
Moonrise: 11:54 AM
Moon Transit: 6:58 PM
Moonset: 1:22 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%

Best Times for Fishing or Hunting

Major Periods

7:50 AM - 10:20 AM
6:28 PM - 8:58 PM

Minor Periods

11:24 AM - 12:54 AM
12:52 AM - 2:22 AM

Action Rating: 2 out of 5

Saturday, May 23, 2026

Weather Forecast

Moderate rain
55.5°F
52.5°F
53.4°F
99%
0.55 in
86%
0%
9.4 mph
3


Air Quality

AQI: 1 - Good
PM2.5: 7.32 μg/m3
PM10: 8.74 μg/m3
Carbon Monoxide: 157.93 μg/m3
Nitrogen Dioxide: 12.45 μg/m3
Sulphur Dioxide: 2.2 μg/m3
Ozone: 55.23 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:05 PM
Sunset: 8:22 PM
Daylight: 14 hrs 32 mins
Moonrise: 1:03 PM
Moon Transit: 7:45 PM
Moonset: 1:51 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%

Best Times for Fishing or Hunting

Major Periods

8:38 AM - 11:08 AM
7:15 PM - 9:45 PM

Minor Periods

12:33 AM - 2:03 PM
1:21 AM - 2:51 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.

Webcams Near McLean, VA

Sponsored Content