Water Temperature of Dead Run in McLean, VA

Current Water Temperature

68.4°F

Measurement Time: Monday, June 22, 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

73.9°F
Overcast
Overcast
76.7°F
71°F
66%
ESE 2.9 mph
5.7 mph
69.8°F
50.2°F
0 in
100%
9 mi
1014 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Mon
H: 95°F
L: 69°F
Moderate rain
Tue
H: 74°F
L: 64°F
Sunny
Wed
H: 84°F
L: 59°F
Sunny
Thu
H: 91°F
L: 63°F
Moderate rain
Fri
H: 93°F
L: 69°F

Air Quality

AQI: 1 - Good
PM2.5: 14.9 μg/m3
PM10: 15 μg/m3
Carbon Monoxide: 184 μg/m3
Nitrogen Dioxide: 41.1 μg/m3
Sulphur Dioxide: 2.6 μg/m3
Ozone: 26 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 1:10 PM
Sunset: 8:38 PM
Daylight: 14 hrs 55 mins
Moonrise: 2:06 PM
Moon Transit: 7:50 PM
Moonset: 1:04 AM
Moon Phase: First Quarter
Moon Illumination: 49.7%

Best Times for Fishing or Hunting

Major Periods

8:45 AM - 11:15 AM
7:20 PM - 9:50 PM

Minor Periods

1:36 PM - 3:06 PM
12:34 AM - 2:04 AM

Action Rating: 2 out of 5

Small Craft Advisory issued June 22 at 1:55AM EDT until June 22 at 6:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Mon June 22, 2026, 1:55 AM
Expires: Mon June 22, 2026, 10:00 AM

* WHAT...South winds 10 to 15 kt with gusts up to 20 kt expected. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD. * WHEN...From noon today to 6 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Monday, June 22, 2026

Weather Forecast

Patchy rain nearby
95°F
68.5°F
80.2°F
51%
0.02 in
36%
0%
12.8 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 10.51 μg/m3
PM10: 10.7 μg/m3
Carbon Monoxide: 166.42 μg/m3
Nitrogen Dioxide: 17.06 μg/m3
Sulphur Dioxide: 1.64 μg/m3
Ozone: 74 μg/m3

Astronomical

Sunrise: 5:43 AM
Sun Transit: 1:10 PM
Sunset: 8:38 PM
Daylight: 14 hrs 55 mins
Moonrise: 2:06 PM
Moon Transit: 7:50 PM
Moonset: 1:04 AM
Moon Phase: First Quarter
Moon Illumination: 49.7%

Best Times for Fishing or Hunting

Major Periods

8:45 AM - 11:15 AM
7:20 PM - 9:50 PM

Minor Periods

1:36 PM - 3:06 PM
12:34 AM - 2:04 AM

Action Rating: 2 out of 5

Tuesday, June 23, 2026

Weather Forecast

Moderate rain
74.4°F
64.1°F
69.5°F
85%
0.29 in
84%
0%
13.2 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 4.22 μg/m3
PM10: 4.3 μg/m3
Carbon Monoxide: 134.64 μg/m3
Nitrogen Dioxide: 5.41 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 74.13 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 1:11 PM
Sunset: 8:38 PM
Daylight: 14 hrs 55 mins
Moonrise: 3:08 PM
Moon Transit: 8:33 PM
Moonset: 1:26 AM
Moon Phase: First Quarter
Moon Illumination: 61.0%

Best Times for Fishing or Hunting

Major Periods

9:27 AM - 11:57 AM
8:03 PM - 10:33 PM

Minor Periods

2:38 PM - 4:08 PM
12:56 AM - 2:26 AM

Action Rating: 2 out of 5

Wednesday, June 24, 2026

Weather Forecast

Sunny
83.6°F
59.2°F
71.8°F
55%
0 in
3%
0%
7.6 mph
9.3


Air Quality

AQI: 1 - Good
PM2.5: 6.19 μg/m3
PM10: 6.28 μg/m3
Carbon Monoxide: 161.54 μg/m3
Nitrogen Dioxide: 7.21 μg/m3
Sulphur Dioxide: 1.54 μg/m3
Ozone: 86.38 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 1:11 PM
Sunset: 8:38 PM
Daylight: 14 hrs 54 mins
Moonrise: 4:10 PM
Moon Transit: 9:17 PM
Moonset: 1:51 AM
Moon Phase: First Quarter
Moon Illumination: 71.7%

Best Times for Fishing or Hunting

Major Periods

10:10 AM - 12:40 AM
8:47 PM - 11:17 PM

Minor Periods

3:40 PM - 5:10 PM
1:21 AM - 2:51 AM

Action Rating: 3 out of 5

Thursday, June 25, 2026

Weather Forecast

Sunny
91°F
63°F
76.8°F
51%
0 in
17%
0%
10.7 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 7.9 μg/m3
PM10: 8.52 μg/m3
Carbon Monoxide: 197.25 μg/m3
Nitrogen Dioxide: 7.78 μg/m3
Sulphur Dioxide: 1.42 μg/m3
Ozone: 101.5 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 1:11 PM
Sunset: 8:39 PM
Daylight: 14 hrs 54 mins
Moonrise: 5:12 PM
Moon Transit: 10:03 PM
Moonset: 2:18 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.2%

Best Times for Fishing or Hunting

Major Periods

10:55 AM - 1:25 PM
12:00 AM - 12:00 AM

Minor Periods

4:42 PM - 6:12 PM
1:48 AM - 3:18 AM

Action Rating: 2 out of 5

Friday, June 26, 2026

Weather Forecast

Moderate rain
93°F
68.9°F
78.7°F
61%
0.21 in
58%
0%
10.1 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 7.38 μg/m3
PM10: 8.52 μg/m3
Carbon Monoxide: 181.89 μg/m3
Nitrogen Dioxide: 4.3 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 87.33 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:11 PM
Sunset: 8:39 PM
Daylight: 14 hrs 54 mins
Moonrise: 6:14 PM
Moon Transit: 10:51 PM
Moonset: 2:49 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 89.2%

Best Times for Fishing or Hunting

Major Periods

11:43 AM - 2:13 PM
12:00 AM - 12:00 AM

Minor Periods

5:44 PM - 7:14 PM
2:19 AM - 3:49 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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