Water Temperature of Upper Machedoc Creek in Dahlgren, VA

Current Water Temperature

40.1°F

Measurement Time: Sunday, December 14, 2025, 1:54 PM EST

Today's Tides

Low: December 14, 4:38 AM, 0.04 ft
 High: December 14, 10:51 AM, 1.45 ft
Low: December 14, 5:22 PM, 0.14 ft
 High: December 14, 11:12 PM, 1.24 ft

Temperature Locations

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Local Points of Interest

Potomac River; Naval Surface Warfare Center

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Upper Machedoc Creek

Station Name: Dahlgren
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 10 feet / 3 meters

Sensor Depth: 1.9 feet / 0.6 meters

Nearest Address:
6388–6478 Sampson Rd
Dahlgren, VA 22448
King George County

GPS Coordinates: 38.320000, -77.036697

Nearby Water Temperatures

Patuxent River, Solomons, MD (31.8 mi)
Chesapeake Bay, Cambridge, MD (37.4 mi)
Washington Channel, Washington, DC (38.2 mi)
Coan River, Lewisetta, VA (38.3 mi)
Difficult Run, Oakton, VA (42.2 mi)
Potomac River, Scotland, MD (43.0 mi)
Northeast Branch Anacostia River, Riverdale Park, MD (44.6 mi)
Dead Run, McLean, VA (44.8 mi)
Sligo Creek, Takoma Park, MD (46.1 mi)
Difficult Run, McLean, VA (46.7 mi)
Paint Branch, Calverton, MD (49.4 mi)
Fishing Bay, Crocheron, MD (54.6 mi)
Chesapeake Bay, Annapolis, MD (54.6 mi)
Severn River, Annapolis, MD (54.8 mi)
Choptank River, Cambridge, MD (55.6 mi)

Weather for Dahlgren, Virginia

Current Weather

28.9°F
Partly Cloudy
Conditions: Partly Cloudy
Humidity: 49%
Feels Like: 16°F
Wind: NW 19.9 mph
Wind Gusts: 22.9 mph
Pressure: 30.15 in
Precipitation: 0 in
Cloud Cover: 25%
Visibility: 6 mi
UV Index: 1.1

Five Day Weather Forecast

Moderate or heavy snow showers
Sun
H: 36°F
L: 21°F
Sunny
Mon
H: 37°F
L: 21°F
Sunny
Tue
H: 42°F
L: 29°F
Partly Cloudy
Wed
H: 47°F
L: 32°F
Sunny
Thu
H: 52°F
L: 37°F

Air Quality

AQI: 2 - Moderate
PM2.5: 3.45 μg/m3
PM10: 3.45 μg/m3
Carbon Monoxide: 171.85 μg/m3
Nitrogen Dioxide: 8.55 μg/m3
Sulphur Dioxide: 5.35 μg/m3
Ozone: 71 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:03 AM
Sunset: 4:49 PM
Daylight: 9 hrs 32 mins
Moonrise: 2:18 AM
Moon Transit: 7:52 AM
Moonset: 1:19 PM
Moon Phase: Last Quarter
Moon Illumination: 19.9%

Best Times for Fishing or Hunting

Major Periods

7:22 AM - 9:52 AM
9:30 PM - 12:00 PM

Minor Periods

12:49 AM - 2:19 PM
1:48 AM - 3:18 AM

Action Rating: 3 out of 5

Sunday, December 14, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 30.1°F
Average Humidity: 67%
Chance of Rain: 72%
Wind: 19.9 mph
UV Index: 0.4

Air Quality

AQI: 1 - Good
PM2.5: 10.61 μg/m3
PM10: 10.67 μg/m3
Carbon Monoxide: 221.45 μg/m3
Nitrogen Dioxide: 20.36 μg/m3
Sulphur Dioxide: 7.48 μg/m3
Ozone: 44.4 μg/m3

Astronomical

Sunrise: 7:17 AM
Sun Transit: 12:03 AM
Sunset: 4:49 PM
Daylight: 9 hrs 32 mins
Moonrise: 2:18 AM
Moon Transit: 7:52 AM
Moonset: 1:19 PM
Moon Phase: Last Quarter
Moon Illumination: 19.9%

Best Times for Fishing or Hunting

Major Periods

7:22 AM - 9:52 AM
9:30 PM - 12:00 PM

Minor Periods

12:49 AM - 2:19 PM
1:48 AM - 3:18 AM

Action Rating: 3 out of 5

Monday, December 15, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 27.9°F
Average Humidity: 44%
Chance of Rain: 0%
Wind: 19 mph
UV Index: 0.4

Air Quality

AQI: 1 - Good
PM2.5: 4.35 μg/m3
PM10: 4.37 μg/m3
Carbon Monoxide: 174.85 μg/m3
Nitrogen Dioxide: 7.81 μg/m3
Sulphur Dioxide: 5.33 μg/m3
Ozone: 64 μg/m3

Astronomical

Sunrise: 7:18 AM
Sun Transit: 12:03 AM
Sunset: 4:49 PM
Daylight: 9 hrs 31 mins
Moonrise: 3:18 AM
Moon Transit: 8:34 AM
Moonset: 1:44 PM
Moon Phase: Waning Crescent
Moon Illumination: 11.7%

Best Times for Fishing or Hunting

Major Periods

8:04 AM - 10:34 AM
12:00 AM - 12:00 AM

Minor Periods

1:14 PM - 2:44 PM
2:48 AM - 4:18 AM

Action Rating: 2 out of 5

Tuesday, December 16, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 34.6°F
Average Humidity: 37%
Chance of Rain: 0%
Wind: 8.7 mph
UV Index: 0.4

Air Quality

AQI: 1 - Good
PM2.5: 9.41 μg/m3
PM10: 9.47 μg/m3
Carbon Monoxide: 211.01 μg/m3
Nitrogen Dioxide: 11.57 μg/m3
Sulphur Dioxide: 8.15 μg/m3
Ozone: 52.64 μg/m3

Astronomical

Sunrise: 7:19 AM
Sun Transit: 12:04 AM
Sunset: 4:49 PM
Daylight: 9 hrs 31 mins
Moonrise: 4:19 AM
Moon Transit: 9:18 AM
Moonset: 2:13 PM
Moon Phase: Waning Crescent
Moon Illumination: 5.5%

Best Times for Fishing or Hunting

Major Periods

8:48 AM - 11:18 AM
12:00 AM - 12:00 AM

Minor Periods

1:43 PM - 3:13 PM
3:49 AM - 5:19 AM

Action Rating: 2 out of 5

Wednesday, December 17, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 39.1°F
Average Humidity: 69%
Chance of Rain: 0%
Wind: 12.3 mph
UV Index: 0.3

Air Quality

AQI: 1 - Good
PM2.5: 15.28 μg/m3
PM10: 15.43 μg/m3
Carbon Monoxide: 242.44 μg/m3
Nitrogen Dioxide: 11.04 μg/m3
Sulphur Dioxide: 5.97 μg/m3
Ozone: 47.36 μg/m3

Astronomical

Sunrise: 7:19 AM
Sun Transit: 12:04 AM
Sunset: 4:50 PM
Daylight: 9 hrs 31 mins
Moonrise: 5:20 AM
Moon Transit: 10:05 AM
Moonset: 2:46 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:35 AM - 12:05 AM

Minor Periods

2:16 PM - 3:46 PM
4:50 AM - 6:20 AM

Action Rating: 2 out of 5

Thursday, December 18, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 43.2°F
Average Humidity: 85%
Chance of Rain: 0%
Wind: 16.1 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 17.73 μg/m3
PM10: 17.9 μg/m3
Carbon Monoxide: 274.81 μg/m3
Nitrogen Dioxide: 11.48 μg/m3
Sulphur Dioxide: 5.56 μg/m3
Ozone: 41.77 μg/m3

Astronomical

Sunrise: 7:20 AM
Sun Transit: 12:04 AM
Sunset: 4:50 PM
Daylight: 9 hrs 30 mins
Moonrise: 6:21 AM
Moon Transit: 10:55 AM
Moonset: 3:26 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:25 AM - 12:55 AM

Minor Periods

2:56 PM - 4:26 PM
5:51 AM - 7:21 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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