Water Temperature of Difficult Run in McLean, VA

Current Water Temperature

39.9°F

Measurement Time: Saturday, December 21, 2024, 1:15 AM EST

Temperature Locations

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Local Points of Interest

Great Falls Park; Great Falls, VA

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Difficult Run

Station Name: DIFFICULT RUN NEAR GREAT FALLS, VA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 184 feet / 56 meters

Nearest Address:
9200 Old Dominion Dr
McLean, VA 22102
Fairfax County

GPS Coordinates: 38.97594346, -77.24581439

Nearby Water Temperatures

Dead Run, McLean, VA (3.9 mi)
Difficult Run, Oakton, VA (7.8 mi)
Sligo Creek, Takoma Park, MD (13.0 mi)
Washington Channel, Washington, DC (14.0 mi)
Paint Branch, Calverton, MD (15.6 mi)
Northeast Branch Anacostia River, Riverdale Park, MD (17.2 mi)
Patuxent River, Brighton, MD (19.8 mi)
Potomac River, Point of Rocks, MD (26.0 mi)
Carroll Creek, Frederick, MD (32.5 mi)
Carroll Creek, Frederick, MD (33.5 mi)
Scotts Level Branch, Milford Mill, MD (37.2 mi)
Northwest Harbor, Baltimore, MD (41.0 mi)
Spout Run, Boyce, VA (41.2 mi)
Severn River, Annapolis, MD (41.2 mi)
Chesapeake Bay, Annapolis, MD (42.9 mi)

Weather for McLean, Virginia

Current Weather

32°F
Clear
Conditions: Clear
Humidity: 77%
Feels Like: 21.1°F
Wind: NW 12.8 mph
Wind Gusts: 18.1 mph
Pressure: 30.04 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Sat
H: 38°F
L: 26°F
Sunny
Sun
H: 36°F
L: 23°F
Partly Cloudy
Mon
H: 33°F
L: 18°F
Patchy rain nearby
Tue
H: 49°F
L: 27°F
Sunny
Wed
H: 42°F
L: 28°F

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 3.33 μg/m3
PM10: 3.33 μg/m3
Carbon Monoxide: 360.75 μg/m3
Nitrogen Dioxide: 9.07 μg/m3
Sulphur Dioxide: 3.89 μg/m3
Ozone: 66 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:07 AM
Sunset: 4:51 PM
Daylight: 9 hrs 26 mins
Moonrise: 11:27 PM
Moon Transit: 5:08 AM
Moonset: 11:40 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.9%

Best Times for Fishing or Hunting

Major Periods

4:38 AM - 7:08 AM
6:43 PM - 9:13 PM

Minor Periods

12:00 AM - 12:00 AM
11:10 AM - 12:40 AM

Action Rating: 3 out of 5

Saturday, December 21, 2024

Weather Forecast

Conditions: Sunny
Average Temperature: 32.7°F
Average Humidity: 69%
Chance of Rain: 0%
Wind: 15.2 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 12.45 μg/m3
PM10: 13.16 μg/m3
Carbon Monoxide: 421.28 μg/m3
Nitrogen Dioxide: 26.11 μg/m3
Sulphur Dioxide: 10.67 μg/m3
Ozone: 50.68 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:07 AM
Sunset: 4:51 PM
Daylight: 9 hrs 26 mins
Moonrise: 11:27 PM
Moon Transit: 5:08 AM
Moonset: 11:40 AM
Moon Phase: Waning Gibbous
Moon Illumination: 58.9%

Best Times for Fishing or Hunting

Major Periods

4:38 AM - 7:08 AM
6:43 PM - 9:13 PM

Minor Periods

12:00 AM - 12:00 AM
11:10 AM - 12:40 AM

Action Rating: 3 out of 5

Sunday, December 22, 2024

Weather Forecast

Conditions: Sunny
Average Temperature: 27.5°F
Average Humidity: 64%
Chance of Rain: 0%
Wind: 10.1 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 6.33 μg/m3
PM10: 6.47 μg/m3
Carbon Monoxide: 338.7 μg/m3
Nitrogen Dioxide: 13.49 μg/m3
Sulphur Dioxide: 5.06 μg/m3
Ozone: 75.08 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 12:07 AM
Sunset: 4:51 PM
Daylight: 9 hrs 26 mins
Moonrise: 12:27 AM
Moon Transit: 5:48 AM
Moonset: 12:00 AM
Moon Phase: Last Quarter
Moon Illumination: 47.6%

Best Times for Fishing or Hunting

Major Periods

5:18 AM - 7:48 AM
7:23 PM - 9:53 PM

Minor Periods

11:30 AM - 1:00 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, December 23, 2024

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 25.9°F
Average Humidity: 76%
Chance of Rain: 0%
Wind: 9.8 mph
UV Index: 0.4

Air Quality

AQI: 2 - Moderate
PM2.5: 18.11 μg/m3
PM10: 18.63 μg/m3
Carbon Monoxide: 457.62 μg/m3
Nitrogen Dioxide: 38.71 μg/m3
Sulphur Dioxide: 15.9 μg/m3
Ozone: 50.68 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 12:08 AM
Sunset: 4:52 PM
Daylight: 9 hrs 26 mins
Moonrise: 12:26 AM
Moon Transit: 6:27 AM
Moonset: 12:20 AM
Moon Phase: Last Quarter
Moon Illumination: 36.5%

Best Times for Fishing or Hunting

Major Periods

5:57 AM - 8:27 AM
8:01 PM - 10:31 PM

Minor Periods

11:50 AM - 1:20 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, December 24, 2024

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 36.9°F
Average Humidity: 64%
Chance of Rain: 64%
Wind: 11 mph
UV Index: 0.2

Air Quality

AQI: 2 - Moderate
PM2.5: 34.12 μg/m3
PM10: 34.47 μg/m3
Carbon Monoxide: 691.46 μg/m3
Nitrogen Dioxide: 58.58 μg/m3
Sulphur Dioxide: 21.1 μg/m3
Ozone: 26.92 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:08 AM
Sunset: 4:52 PM
Daylight: 9 hrs 27 mins
Moonrise: 1:24 AM
Moon Transit: 7:06 AM
Moonset: 12:41 AM
Moon Phase: Last Quarter
Moon Illumination: 26.0%

Best Times for Fishing or Hunting

Major Periods

6:36 AM - 9:06 AM
8:41 PM - 11:11 PM

Minor Periods

12:11 AM - 1:41 PM
12:54 AM - 2:24 AM

Action Rating: 2 out of 5

Wednesday, December 25, 2024

Weather Forecast

Conditions: Sunny
Average Temperature: 34.2°F
Average Humidity: 66%
Chance of Rain: 0%
Wind: 7.6 mph
UV Index: 0

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 49.57 μg/m3
PM10: 50.23 μg/m3
Carbon Monoxide: 1011.52 μg/m3
Nitrogen Dioxide: 65.58 μg/m3
Sulphur Dioxide: 20.18 μg/m3
Ozone: 10.31 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:09 AM
Sunset: 4:53 PM
Daylight: 9 hrs 27 mins
Moonrise: 2:25 AM
Moon Transit: 7:47 AM
Moonset: 1:03 PM
Moon Phase: Last Quarter
Moon Illumination: 16.7%

Best Times for Fishing or Hunting

Major Periods

7:17 AM - 9:47 AM
9:24 PM - 11:54 PM

Minor Periods

12:33 AM - 2:03 PM
1:55 AM - 3:25 AM

Action Rating: 3 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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