Water Temperature of Difficult Run in Oakton, VA

Current Water Temperature

40.3°F

Measurement Time: Wednesday, December 24, 2025, 11:15 PM EST

Temperature Locations

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Local Points of Interest

Fairfax, VA

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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

40.7°F
Mostly cloudy
Conditions: Mostly cloudy
Humidity: 55%
Heat Index: 40.7°F
Feels Like: 35.6°F
Wind: S 5 mph
Wind Gusts: 15 mph
Wind Chill: 35.6°F
Air Pressure: 1020.22 millibars
Dew Point: 35.6°F
Chance of Precipitation: 10%
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 10 mi
UV Index: 0

Five Day Weather Forecast

Patchy rain nearby
Thu
H: 60°F
L: 37°F
Moderate or heavy snow showers
Fri
H: 34°F
L: 27°F
Moderate or heavy snow showers
Sat
H: 36°F
L: 31°F
Moderate rain
Sun
H: 41°F
L: 32°F
Patchy rain nearby
Mon
H: 51°F
L: 26°F

Air Quality

AQI: 1 - Good
PM2.5: 14.15 μg/m3
PM10: 14.35 μg/m3
Carbon Monoxide: 263.85 μg/m3
Nitrogen Dioxide: 27.55 μg/m3
Sulphur Dioxide: 7.95 μg/m3
Ozone: 26 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:09 AM
Sunset: 4:53 PM
Daylight: 9 hrs 27 mins
Moonrise: 11:00 AM
Moon Transit: 4:40 PM
Moonset: 10:31 PM
Moon Phase: Waxing Crescent
Moon Illumination: 29.7%

Best Times for Fishing or Hunting

Major Periods

5:33 AM - 8:03 AM
4:10 PM - 6:40 PM

Minor Periods

10:01 PM - 11:31 PM
10:30 AM - 12:00 AM

Action Rating: 2 out of 5

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

Effective: Thu December 25, 2025, 1:26 AM
Expires: Thu December 25, 2025, 1:36 AM

Monitoring message only. Please disregard.

Monitoring message only. Please disregard.
Thursday, December 25, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 44.1°F
Average Humidity: 62%
Chance of Rain: 82%
Wind: 9.6 mph
UV Index: 0.1

Air Quality

AQI: 2 - Moderate
PM2.5: 19.04 μg/m3
PM10: 19.25 μg/m3
Carbon Monoxide: 351.13 μg/m3
Nitrogen Dioxide: 36.35 μg/m3
Sulphur Dioxide: 11.21 μg/m3
Ozone: 19.68 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:09 AM
Sunset: 4:53 PM
Daylight: 9 hrs 27 mins
Moonrise: 11:00 AM
Moon Transit: 4:40 PM
Moonset: 10:31 PM
Moon Phase: Waxing Crescent
Moon Illumination: 29.7%

Best Times for Fishing or Hunting

Major Periods

5:33 AM - 8:03 AM
4:10 PM - 6:40 PM

Minor Periods

10:01 PM - 11:31 PM
10:30 AM - 12:00 AM

Action Rating: 2 out of 5

Friday, December 26, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 31.2°F
Average Humidity: 66%
Chance of Rain: 67%
Wind: 13.2 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 7.99 μg/m3
PM10: 8.15 μg/m3
Carbon Monoxide: 230.25 μg/m3
Nitrogen Dioxide: 27.36 μg/m3
Sulphur Dioxide: 8.69 μg/m3
Ozone: 38.68 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:10 AM
Sunset: 4:54 PM
Daylight: 9 hrs 28 mins
Moonrise: 11:23 AM
Moon Transit: 12:00 AM
Moonset: 11:37 PM
Moon Phase: First Quarter
Moon Illumination: 40.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:17 AM - 8:47 AM

Minor Periods

12:00 AM - 12:00 AM
10:53 AM - 12:23 AM

Action Rating: 2 out of 5

Saturday, December 27, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 33.6°F
Average Humidity: 91%
Chance of Rain: 71%
Wind: 7.2 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 10.12 μg/m3
PM10: 10.97 μg/m3
Carbon Monoxide: 247.49 μg/m3
Nitrogen Dioxide: 33.35 μg/m3
Sulphur Dioxide: 6.87 μg/m3
Ozone: 27.2 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:10 AM
Sunset: 4:55 PM
Daylight: 9 hrs 28 mins
Moonrise: 11:47 AM
Moon Transit: 4:23 AM
Moonset: 12:37 AM
Moon Phase: First Quarter
Moon Illumination: 51.8%

Best Times for Fishing or Hunting

Major Periods

3:53 AM - 6:23 AM
3:53 AM - 6:23 AM

Minor Periods

11:17 AM - 12:47 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, December 28, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 37.2°F
Average Humidity: 91%
Chance of Rain: 70%
Wind: 12.3 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 9.59 μg/m3
PM10: 10.68 μg/m3
Carbon Monoxide: 247.71 μg/m3
Nitrogen Dioxide: 30.5 μg/m3
Sulphur Dioxide: 5.47 μg/m3
Ozone: 33.16 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:11 AM
Sunset: 4:55 PM
Daylight: 9 hrs 28 mins
Moonrise: 12:12 AM
Moon Transit: 6:58 PM
Moonset: 12:46 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

7:48 AM - 10:18 AM
6:28 PM - 8:58 PM

Minor Periods

11:42 AM - 1:12 PM
12:16 AM - 1:46 AM

Action Rating: 3 out of 5

Monday, December 29, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 41.6°F
Average Humidity: 71%
Chance of Rain: 87%
Wind: 16.8 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 13.33 μg/m3
PM10: 13.51 μg/m3
Carbon Monoxide: 235.12 μg/m3
Nitrogen Dioxide: 17.56 μg/m3
Sulphur Dioxide: 6.85 μg/m3
Ozone: 32.62 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:11 AM
Sunset: 4:56 PM
Daylight: 9 hrs 29 mins
Moonrise: 12:41 AM
Moon Transit: 7:50 PM
Moonset: 1:57 AM
Moon Phase: First Quarter
Moon Illumination: 73.5%

Best Times for Fishing or Hunting

Major Periods

8:38 AM - 11:08 AM
7:20 PM - 9:50 PM

Minor Periods

12:11 AM - 1:41 PM
1:27 AM - 2:57 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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