Water Temperature of Difficult Run in Oakton, VA

Current Water Temperature

56.7°F

Measurement Time: Sunday, April 12, 2026, 1:15 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

43°F
Partly cloudy
Partly cloudy
40.9°F
46.6°F
86%
E 3.8 mph
6.9 mph
43.5°F
38.7°F
0 in
75%
9 mi
1030 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 77°F
L: 46°F
Cloudy
Mon
H: 83°F
L: 55°F
Cloudy
Tue
H: 86°F
L: 65°F
Sunny
Wed
H: 86°F
L: 65°F
Sunny
Thu
H: 85°F
L: 68°F

Air Quality

AQI: 1 - Good
PM2.5: 8.85 μg/m3
PM10: 9.35 μg/m3
Carbon Monoxide: 221.85 μg/m3
Nitrogen Dioxide: 12.95 μg/m3
Sulphur Dioxide: 4.65 μg/m3
Ozone: 76 μg/m3

Astronomical

Sunrise: 6:37 AM
Sun Transit: 1:10 PM
Sunset: 7:43 PM
Daylight: 13 hrs 6 mins
Moonrise: 4:06 AM
Moon Transit: 9:15 AM
Moonset: 2:34 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:45 AM - 11:15 AM
12:00 AM - 12:00 AM

Minor Periods

2:04 PM - 3:34 PM
3:36 AM - 5:06 AM

Action Rating: 2 out of 5

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

Effective: Sun April 12, 2026, 2:28 AM
Expires: Sun April 12, 2026, 2:38 AM

Monitoring message only. Please disregard.

Monitoring message only. Please disregard.
Sunday, April 12, 2026

Weather Forecast

Sunny
76.5°F
45.9°F
58.9°F
57%
0 in
0%
0%
10.3 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 9.53 μg/m3
PM10: 9.8 μg/m3
Carbon Monoxide: 257.53 μg/m3
Nitrogen Dioxide: 19.81 μg/m3
Sulphur Dioxide: 5.03 μg/m3
Ozone: 79.12 μg/m3

Astronomical

Sunrise: 6:37 AM
Sun Transit: 1:10 PM
Sunset: 7:43 PM
Daylight: 13 hrs 6 mins
Moonrise: 4:06 AM
Moon Transit: 9:15 AM
Moonset: 2:34 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:45 AM - 11:15 AM
12:00 AM - 12:00 AM

Minor Periods

2:04 PM - 3:34 PM
3:36 AM - 5:06 AM

Action Rating: 2 out of 5

Monday, April 13, 2026

Weather Forecast

Cloudy
83.3°F
54.9°F
67.4°F
65%
0 in
0%
0%
15 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 10.12 μg/m3
PM10: 10.63 μg/m3
Carbon Monoxide: 182.17 μg/m3
Nitrogen Dioxide: 9.34 μg/m3
Sulphur Dioxide: 4.02 μg/m3
Ozone: 101.48 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 1:09 PM
Sunset: 7:44 PM
Daylight: 13 hrs 8 mins
Moonrise: 4:33 AM
Moon Transit: 10:01 AM
Moonset: 3:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:31 AM - 12:01 AM

Minor Periods

3:10 PM - 4:40 PM
4:03 AM - 5:33 AM

Action Rating: 2 out of 5

Tuesday, April 14, 2026

Weather Forecast

Cloudy
85.8°F
64.6°F
76.1°F
46%
0 in
0%
0%
8.1 mph
1.7


Air Quality

AQI: 2 - Moderate
PM2.5: 17.01 μg/m3
PM10: 17.46 μg/m3
Carbon Monoxide: 181.65 μg/m3
Nitrogen Dioxide: 34.94 μg/m3
Sulphur Dioxide: 4.74 μg/m3
Ozone: 60.28 μg/m3

Astronomical

Sunrise: 6:35 AM
Sun Transit: 1:09 PM
Sunset: 7:45 PM
Daylight: 13 hrs 11 mins
Moonrise: 4:57 AM
Moon Transit: 10:47 AM
Moonset: 4:49 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:17 AM - 12:47 AM

Minor Periods

4:19 PM - 5:49 PM
4:27 AM - 5:57 AM

Action Rating: 2 out of 5

Wednesday, April 15, 2026

Weather Forecast

Sunny
86.1°F
65.3°F
76.3°F
51%
0 in
0%
0%
11.2 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 10.58 μg/m3
PM10: 11.13 μg/m3
Carbon Monoxide: 196.91 μg/m3
Nitrogen Dioxide: 18.77 μg/m3
Sulphur Dioxide: 3.51 μg/m3
Ozone: 72.08 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 1:09 PM
Sunset: 7:46 PM
Daylight: 13 hrs 13 mins
Moonrise: 5:21 AM
Moon Transit: 11:33 AM
Moonset: 5:59 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:25 AM - 2:55 AM
11:03 AM - 1:33 PM

Minor Periods

5:29 PM - 6:59 PM
4:51 AM - 6:21 AM

Action Rating: 3 out of 5

Thursday, April 16, 2026

Weather Forecast

Sunny
84.8°F
67.5°F
73.8°F
58%
0 in
0%
0%
10.7 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 12.07 μg/m3
PM10: 12.53 μg/m3
Carbon Monoxide: 270.25 μg/m3
Nitrogen Dioxide: 34.8 μg/m3
Sulphur Dioxide: 4.25 μg/m3
Ozone: 52.62 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 1:09 PM
Sunset: 7:47 PM
Daylight: 13 hrs 16 mins
Moonrise: 5:47 AM
Moon Transit: 12:22 AM
Moonset: 7:11 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:52 AM - 2:22 PM

Minor Periods

6:41 PM - 8:11 PM
5:17 AM - 6:47 AM

Action Rating: 5 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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