Water Temperature of Difficult Run in Oakton, VA

Current Water Temperature

60.3°F

Measurement Time: Friday, May 9, 2025, 10:15 PM EDT

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 / 100 meters

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 (19.0 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 (45.0 mi)
Severn River, Annapolis, MD (46.4 mi)
Chesapeake Bay, Annapolis, MD (47.8 mi)

Weather for Oakton, Virginia

Current Weather

48.9°F
Clear
Conditions: Clear
Humidity: 61%
Feels Like: 45.7°F
Wind: WNW 7.4 mph
Wind Gusts: 13.7 mph
Pressure: 30.08 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Sat
H: 75°F
L: 50°F
Sunny
Sun
H: 84°F
L: 58°F
Partly Cloudy
Mon
H: 78°F
L: 61°F
Heavy rain
Tue
H: 66°F
L: 59°F
Moderate rain
Wed
H: 78°F
L: 61°F

Air Quality

PM2.5: 7.77 μg/m3
PM10: 8.14 μg/m3
Carbon Monoxide: 327.45 μg/m3
Nitrogen Dioxide: 15.91 μg/m3
Sulphur Dioxide: 12.21 μg/m3
Ozone: 69 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:05 PM
Sunset: 8:11 PM
Daylight: 14 hrs 10 mins
Moonrise: 6:35 PM
Moon Transit: 11:54 PM
Moonset: 4:44 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

12:48 AM - 3:18 PM
12:00 AM - 12:00 AM

Minor Periods

6:05 PM - 7:35 PM
4:14 AM - 5:44 AM

Action Rating: 3 out of 5

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

Effective: Sat May 10, 2025, 2:25 AM
Expires: Sat May 10, 2025, 2:35 AM

Monitoring message only. Please disregard.

Monitoring message only. Please disregard.
Saturday, May 10, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 62.9°F
Average Humidity: 49%
Chance of Rain: 0%
Wind: 12.8 mph
UV Index: 2.1

Air Quality

AQI: 1 - Good
PM2.5: 10.89 μg/m3
PM10: 11.51 μg/m3
Carbon Monoxide: 328.63 μg/m3
Nitrogen Dioxide: 16.55 μg/m3
Sulphur Dioxide: 8.32 μg/m3
Ozone: 84.64 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 1:05 PM
Sunset: 8:11 PM
Daylight: 14 hrs 10 mins
Moonrise: 6:35 PM
Moon Transit: 11:54 PM
Moonset: 4:44 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

12:48 AM - 3:18 PM
12:00 AM - 12:00 AM

Minor Periods

6:05 PM - 7:35 PM
4:14 AM - 5:44 AM

Action Rating: 3 out of 5

Sunday, May 11, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 70.9°F
Average Humidity: 54%
Chance of Rain: 0%
Wind: 4.9 mph
UV Index: 2.1

Air Quality

AQI: 2 - Moderate
PM2.5: 20.56 μg/m3
PM10: 21.44 μg/m3
Carbon Monoxide: 400.93 μg/m3
Nitrogen Dioxide: 34.15 μg/m3
Sulphur Dioxide: 9.51 μg/m3
Ozone: 82.2 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 1:05 PM
Sunset: 8:12 PM
Daylight: 14 hrs 12 mins
Moonrise: 7:36 PM
Moon Transit: 12:00 AM
Moonset: 5:06 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:30 PM - 4:00 PM

Minor Periods

7:06 PM - 8:36 PM
4:36 AM - 6:06 AM

Action Rating: 5 out of 5

Monday, May 12, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 70.1°F
Average Humidity: 62%
Chance of Rain: 0%
Wind: 8.7 mph
UV Index: 2.2

Air Quality

AQI: 2 - Moderate
PM2.5: 16.21 μg/m3
PM10: 17.16 μg/m3
Carbon Monoxide: 483.07 μg/m3
Nitrogen Dioxide: 26.55 μg/m3
Sulphur Dioxide: 6.19 μg/m3
Ozone: 91.6 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 1:05 PM
Sunset: 8:13 PM
Daylight: 14 hrs 13 mins
Moonrise: 8:39 PM
Moon Transit: 12:38 AM
Moonset: 5:33 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:08 AM - 2:38 AM
2:15 PM - 4:45 PM

Minor Periods

8:09 PM - 9:39 PM
5:03 AM - 6:33 AM

Action Rating: 4 out of 5

Tuesday, May 13, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 64.3°F
Average Humidity: 94%
Chance of Rain: 89%
Wind: 13.2 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 14.39 μg/m3
PM10: 17.42 μg/m3
Carbon Monoxide: 351.07 μg/m3
Nitrogen Dioxide: 21.25 μg/m3
Sulphur Dioxide: 4.33 μg/m3
Ozone: 81.15 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 1:05 PM
Sunset: 8:14 PM
Daylight: 14 hrs 15 mins
Moonrise: 9:40 PM
Moon Transit: 1:24 AM
Moonset: 6:06 AM
Moon Phase: Full
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:54 AM - 3:24 AM
3:03 PM - 5:33 PM

Minor Periods

9:10 PM - 10:40 PM
5:36 AM - 7:06 AM

Action Rating: 4 out of 5

Wednesday, May 14, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 65.5°F
Average Humidity: 94%
Chance of Rain: 86%
Wind: 7.6 mph
UV Index: 0.1

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: 5:57 AM
Sun Transit: 1:05 PM
Sunset: 8:15 PM
Daylight: 14 hrs 17 mins
Moonrise: 10:41 PM
Moon Transit: 2:14 AM
Moonset: 6:45 AM
Moon Phase: Full
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

1:44 AM - 4:14 AM
3:55 PM - 6:25 PM

Minor Periods

10:11 PM - 11:41 PM
6:15 AM - 7:45 AM

Action Rating: 4 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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