Water Temperature of Difficult Run in Oakton, VA

Current Water Temperature

32.0°F

Measurement Time: Wednesday, February 4, 2026, 8:15 PM EST

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

19°F
Clear
Clear
12.7°F
13.3°F
64%
NNW 4.3 mph
7.8 mph
4.1°F
3.5°F
0 in
0%
9 mi
1022 mbar
0

Five Day Weather Forecast

Sunny
Thu
H: 30°F
L: 7°F
Mist
Fri
H: 32°F
L: 22°F
Sunny
Sat
H: 22°F
L: 12°F
Partly Cloudy
Sun
H: 23°F
L: 10°F
Overcast
Mon
H: 39°F
L: 20°F

Air Quality

PM2.5: 16.75 μg/m3
PM10: 16.95 μg/m3
Carbon Monoxide: 315.85 μg/m3
Nitrogen Dioxide: 35.95 μg/m3
Sulphur Dioxide: 4.05 μg/m3
Ozone: 31 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:23 AM
Sunset: 5:35 PM
Daylight: 10 hrs 24 mins
Moonrise: 9:54 PM
Moon Transit: 3:01 AM
Moonset: 9:02 AM
Moon Phase: Waning Gibbous
Moon Illumination: 83.4%

Best Times for Fishing or Hunting

Major Periods

2:31 AM - 5:01 AM
4:37 PM - 7:07 PM

Minor Periods

9:24 PM - 10:54 PM
8:32 AM - 10:02 AM

Action Rating: 2 out of 5

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

Effective: Thu February 5, 2026, 1:29 AM
Expires: Thu February 5, 2026, 1:39 AM

Monitoring message only. Please disregard.

Monitoring message only. Please disregard.
Thursday, February 5, 2026

Weather Forecast

Sunny
29.8°F
7.3°F
20.4°F
69%
0 in
0%
0%
5.8 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 15.16 μg/m3
PM10: 15.39 μg/m3
Carbon Monoxide: 344.73 μg/m3
Nitrogen Dioxide: 36.79 μg/m3
Sulphur Dioxide: 4.83 μg/m3
Ozone: 39.88 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 12:23 AM
Sunset: 5:35 PM
Daylight: 10 hrs 24 mins
Moonrise: 9:54 PM
Moon Transit: 3:01 AM
Moonset: 9:02 AM
Moon Phase: Waning Gibbous
Moon Illumination: 83.4%

Best Times for Fishing or Hunting

Major Periods

2:31 AM - 5:01 AM
4:37 PM - 7:07 PM

Minor Periods

9:24 PM - 10:54 PM
8:32 AM - 10:02 AM

Action Rating: 2 out of 5

Friday, February 6, 2026

Weather Forecast

Mist
31.5°F
22.3°F
27.7°F
88%
0 in
0%
0%
6.5 mph
0.4


Air Quality

AQI: 2 - Moderate
PM2.5: 22.55 μg/m3
PM10: 22.81 μg/m3
Carbon Monoxide: 430.13 μg/m3
Nitrogen Dioxide: 49.33 μg/m3
Sulphur Dioxide: 9.79 μg/m3
Ozone: 24.08 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 12:23 AM
Sunset: 5:36 PM
Daylight: 10 hrs 26 mins
Moonrise: 10:57 PM
Moon Transit: 3:43 AM
Moonset: 9:24 AM
Moon Phase: Waning Gibbous
Moon Illumination: 74.1%

Best Times for Fishing or Hunting

Major Periods

3:13 AM - 5:43 AM
5:19 PM - 7:49 PM

Minor Periods

10:27 PM - 11:57 PM
8:54 AM - 10:24 AM

Action Rating: 3 out of 5

Saturday, February 7, 2026

Weather Forecast

Sunny
21.9°F
12.3°F
20.6°F
60%
0 in
0%
0%
20.8 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 7.67 μg/m3
PM10: 7.73 μg/m3
Carbon Monoxide: 254.06 μg/m3
Nitrogen Dioxide: 18.61 μg/m3
Sulphur Dioxide: 4.19 μg/m3
Ozone: 58.48 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 12:23 AM
Sunset: 5:38 PM
Daylight: 10 hrs 28 mins
Moonrise: 11:59 PM
Moon Transit: 4:26 AM
Moonset: 9:47 AM
Moon Phase: Waning Gibbous
Moon Illumination: 63.7%

Best Times for Fishing or Hunting

Major Periods

3:56 AM - 6:26 AM
6:02 PM - 8:32 PM

Minor Periods

12:00 AM - 12:00 AM
9:17 AM - 10:47 AM

Action Rating: 3 out of 5

Sunday, February 8, 2026

Weather Forecast

Partly Cloudy
23.4°F
9.5°F
16.2°F
55%
0 in
0%
10%
13.6 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 3.44 μg/m3
PM10: 3.5 μg/m3
Carbon Monoxide: 181.48 μg/m3
Nitrogen Dioxide: 9.27 μg/m3
Sulphur Dioxide: 3.85 μg/m3
Ozone: 72.31 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:23 AM
Sunset: 5:39 PM
Daylight: 10 hrs 30 mins
Moonrise: 12:59 AM
Moon Transit: 5:09 AM
Moonset: 10:13 AM
Moon Phase: Last Quarter
Moon Illumination: 52.5%

Best Times for Fishing or Hunting

Major Periods

4:39 AM - 7:09 AM
6:46 PM - 9:16 PM

Minor Periods

9:43 AM - 11:13 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, February 9, 2026

Weather Forecast

Overcast
38.6°F
19.5°F
26°F
60%
0 in
0%
0%
3.6 mph
0


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: 7:07 AM
Sun Transit: 12:23 AM
Sunset: 5:40 PM
Daylight: 10 hrs 33 mins
Moonrise: 1:02 AM
Moon Transit: 5:54 AM
Moonset: 10:43 AM
Moon Phase: Last Quarter
Moon Illumination: 41.2%

Best Times for Fishing or Hunting

Major Periods

5:24 AM - 7:54 AM
7:33 PM - 10:03 PM

Minor Periods

10:13 AM - 11:43 AM
12:32 AM - 2:02 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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