Water Temperature of Difficult Run in Oakton, VA

Current Water Temperature

63.5°F

Measurement Time: Friday, May 22, 2026, 6:15 AM EDT

Temperature Locations

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Local Points of Interest

Fairfax, VA

Difficult Run

Station Name: DIFFICULT RUN ABOVE FOX LAKE NEAR FAIRFAX, VA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 328 feet

Nearest Address:
11200 Lapham Dr
Oakton, VA 22124
Fairfax County

GPS Coordinates: 38.88469518, -77.3324293

Nearby Water Temperatures

Difficult Run, McLean, VA (7.8 mi)
Dead Run, McLean, VA (9.9 mi)
Washington Channel, Washington, DC (16.7 mi)
Sligo Creek, Takoma Park, MD (19 mi)
Paint Branch, Calverton, MD (22.3 mi)
Northeast Branch Anacostia River, Riverdale Park, MD (22.5 mi)
Patuxent River, Brighton, MD (27.6 mi)
Potomac River, Point of Rocks, MD (29.1 mi)
Carroll Creek, Frederick, MD (37.7 mi)
Spout Run, Boyce, VA (38.2 mi)
Carroll Creek, Frederick, MD (38.5 mi)
Upper Machedoc Creek, Dahlgren, VA (42.2 mi)
Scotts Level Branch, Milford Mill, MD (45 mi)
Severn River, Annapolis, MD (46.4 mi)
Chesapeake Bay, Annapolis, MD (47.8 mi)

Weather for Oakton, Virginia

Current Weather

55.9°F
Light rain
Light rain
55.3°F
57°F
93%
NE 4.7 mph
7.2 mph
56.4°F
51.7°F
0 in
100%
2 mi
1027 mbar
0.5

Five Day Weather Forecast

Patchy rain nearby
Fri
H: 58°F
L: 54°F
Moderate rain
Sat
H: 55°F
L: 51°F
Patchy rain nearby
Sun
H: 70°F
L: 55°F
Moderate rain
Mon
H: 71°F
L: 64°F
Moderate rain
Tue
H: 66°F
L: 62°F

Air Quality

AQI: 2 - Moderate
PM2.5: 9.25 μg/m3
PM10: 10.15 μg/m3
Carbon Monoxide: 166.85 μg/m3
Nitrogen Dioxide: 7.15 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 73 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:06 PM
Sunset: 8:21 PM
Daylight: 14 hrs 30 mins
Moonrise: 11:55 AM
Moon Transit: 7:00 PM
Moonset: 1:23 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%

Best Times for Fishing or Hunting

Major Periods

7:49 AM - 10:19 AM
6:30 PM - 9:00 PM

Minor Periods

11:25 AM - 12:55 AM
12:53 AM - 2:23 AM

Action Rating: 2 out of 5

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

Effective: Fri May 22, 2026, 8:20 AM
Expires: Fri May 22, 2026, 8:30 AM

Monitoring message only. Please disregard.

Monitoring message only. Please disregard.
Friday, May 22, 2026

Weather Forecast

Patchy rain nearby
57.9°F
53.6°F
55.6°F
88%
0.18 in
89%
0%
8.9 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 11.39 μg/m3
PM10: 11.92 μg/m3
Carbon Monoxide: 186.69 μg/m3
Nitrogen Dioxide: 14.38 μg/m3
Sulphur Dioxide: 2.44 μg/m3
Ozone: 54.32 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:06 PM
Sunset: 8:21 PM
Daylight: 14 hrs 30 mins
Moonrise: 11:55 AM
Moon Transit: 7:00 PM
Moonset: 1:23 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%

Best Times for Fishing or Hunting

Major Periods

7:49 AM - 10:19 AM
6:30 PM - 9:00 PM

Minor Periods

11:25 AM - 12:55 AM
12:53 AM - 2:23 AM

Action Rating: 2 out of 5

Saturday, May 23, 2026

Weather Forecast

Moderate rain
54.5°F
50.6°F
53.1°F
98%
0.55 in
92%
0%
9.6 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 6.78 μg/m3
PM10: 7.76 μg/m3
Carbon Monoxide: 156.77 μg/m3
Nitrogen Dioxide: 9.38 μg/m3
Sulphur Dioxide: 1.69 μg/m3
Ozone: 61.92 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:06 PM
Sunset: 8:22 PM
Daylight: 14 hrs 32 mins
Moonrise: 1:03 PM
Moon Transit: 7:45 PM
Moonset: 1:52 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%

Best Times for Fishing or Hunting

Major Periods

8:37 AM - 11:07 AM
7:15 PM - 9:45 PM

Minor Periods

12:33 AM - 2:03 PM
1:22 AM - 2:52 AM

Action Rating: 2 out of 5

Sunday, May 24, 2026

Weather Forecast

Patchy rain nearby
69.8°F
55°F
61.4°F
92%
0.03 in
85%
0%
5.6 mph
3.8


Air Quality

AQI: 1 - Good
PM2.5: 6.3 μg/m3
PM10: 6.4 μg/m3
Carbon Monoxide: 153.49 μg/m3
Nitrogen Dioxide: 16.18 μg/m3
Sulphur Dioxide: 2.43 μg/m3
Ozone: 43.2 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:06 PM
Sunset: 8:23 PM
Daylight: 14 hrs 33 mins
Moonrise: 2:09 PM
Moon Transit: 8:29 PM
Moonset: 2:17 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

9:22 AM - 11:52 AM
7:59 PM - 10:29 PM

Minor Periods

1:39 PM - 3:09 PM
1:47 AM - 3:17 AM

Action Rating: 3 out of 5

Monday, May 25, 2026

Weather Forecast

Moderate rain
71.4°F
63.8°F
66.7°F
95%
0.37 in
89%
0%
4.5 mph
2.3


Air Quality

AQI: 2 - Moderate
PM2.5: 15.63 μg/m3
PM10: 15.69 μg/m3
Carbon Monoxide: 255.7 μg/m3
Nitrogen Dioxide: 26.91 μg/m3
Sulphur Dioxide: 4.33 μg/m3
Ozone: 36 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:06 PM
Sunset: 8:24 PM
Daylight: 14 hrs 35 mins
Moonrise: 3:12 PM
Moon Transit: 9:11 PM
Moonset: 2:39 AM
Moon Phase: First Quarter
Moon Illumination: 66.7%

Best Times for Fishing or Hunting

Major Periods

10:04 AM - 12:34 AM
8:41 PM - 11:11 PM

Minor Periods

2:42 PM - 4:12 PM
2:09 AM - 3:39 AM

Action Rating: 3 out of 5

Tuesday, May 26, 2026

Weather Forecast

Moderate rain
65.5°F
61.6°F
64.2°F
99%
0.61 in
86%
0%
3.6 mph
0.3


Air Quality

AQI: 2 - Moderate
PM2.5: 20.9 μg/m3
PM10: 21.03 μg/m3
Carbon Monoxide: 364.62 μg/m3
Nitrogen Dioxide: 42.83 μg/m3
Sulphur Dioxide: 5.02 μg/m3
Ozone: 13.31 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:06 PM
Sunset: 8:25 PM
Daylight: 14 hrs 36 mins
Moonrise: 4:14 PM
Moon Transit: 9:52 PM
Moonset: 3:01 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.9%

Best Times for Fishing or Hunting

Major Periods

10:46 AM - 1:16 PM
9:22 PM - 11:52 PM

Minor Periods

3:44 PM - 5:14 PM
2:31 AM - 4:01 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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