Water Temperature of Upper Machedoc Creek in Dahlgren, VA

Current Water Temperature

31.5°F

Measurement Time: Monday, February 9, 2026, 2:48 AM EST

Today's Tides

Low: February 9, 1:55 AM, -0.1 ft
 High: February 9, 8:08 AM, 1.3 ft
Low: February 9, 2:50 PM, 0.1 ft
 High: February 9, 8:34 PM, 1.0 ft

Temperature Locations

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Local Points of Interest

Potomac River; Naval Surface Warfare Center

Upper Machedoc Creek

Station Name: Dahlgren
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 10 feet

Sensor Depth: 2 feet

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 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

18°F
Freezing fog
Freezing fog
9.4°F
18.9°F
47%
NW 6 mph
9.6 mph
6.7°F
7.5°F
0 in
0%
9 mi
1030 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 38°F
L: 15°F
Overcast
Tue
H: 48°F
L: 32°F
Overcast
Wed
H: 38°F
L: 32°F
Sunny
Thu
H: 41°F
L: 29°F
Sunny
Fri
H: 39°F
L: 27°F

Air Quality

PM2.5: 9.65 μg/m3
PM10: 9.75 μg/m3
Carbon Monoxide: 200.85 μg/m3
Nitrogen Dioxide: 11.95 μg/m3
Sulphur Dioxide: 4.25 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:22 AM
Sunset: 5:40 PM
Daylight: 10 hrs 34 mins
Moonrise: 12:59 AM
Moon Transit: 5:53 AM
Moonset: 10:43 AM
Moon Phase: Last Quarter
Moon Illumination: 41.2%

Best Times for Fishing or Hunting

Major Periods

5:23 AM - 7:53 AM
7:34 PM - 10:04 PM

Minor Periods

10:13 AM - 11:43 AM
12:29 AM - 1:59 AM

Action Rating: 2 out of 5

Cold Weather Advisory issued February 8 at 8:37PM EST until February 9 at 10:00AM EST by NWS Baltimore MD/Washington DC

Effective: Sun February 8, 2026, 8:37 PM
Expires: Mon February 9, 2026, 4:45 AM

* WHAT...Very cold wind chills as low as 8 below zero expected. * WHERE...Washington, D.C., and portions of central, north central, northeast, northern, and southern Maryland, and northern Virginia. * WHEN...Until 10 AM EST Monday. * IMPACTS...The cold wind chills as low as 8 below zero could result in hypothermia if precautions are not taken.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make sure outdoor animals have a warm, dry shelter, food, and unfrozen water. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside. If you do not have heat in your home or lack shelter, you can call 211 or visit your local county or city website for assistance locating appropriate shelter from the cold.


Cold Weather Advisory issued February 9 at 12:46AM EST until February 9 at 10:00AM EST by NWS Wakefield VA

Effective: Mon February 9, 2026, 12:46 AM
Expires: Mon February 9, 2026, 10:00 AM

* WHAT...Very cold wind chills as low as 1 above. * WHERE...Eastern Essex, Eastern King and Queen, Richmond, Western Essex, Westmoreland, Lancaster, Middlesex, and Northumberland Counties. * WHEN...Until 10 AM EST this morning. * IMPACTS...Cold wind chills could result in hypothermia if precautions are not taken.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
Monday, February 9, 2026

Weather Forecast

Sunny
37.9°F
15.1°F
25.4°F
46%
0 in
0%
0%
7.4 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 9.53 μg/m3
PM10: 9.66 μg/m3
Carbon Monoxide: 208.85 μg/m3
Nitrogen Dioxide: 13.87 μg/m3
Sulphur Dioxide: 5.8 μg/m3
Ozone: 66.04 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:22 AM
Sunset: 5:40 PM
Daylight: 10 hrs 34 mins
Moonrise: 12:59 AM
Moon Transit: 5:53 AM
Moonset: 10:43 AM
Moon Phase: Last Quarter
Moon Illumination: 41.2%

Best Times for Fishing or Hunting

Major Periods

5:23 AM - 7:53 AM
7:34 PM - 10:04 PM

Minor Periods

10:13 AM - 11:43 AM
12:29 AM - 1:59 AM

Action Rating: 2 out of 5

Tuesday, February 10, 2026

Weather Forecast

Overcast
47.9°F
31.5°F
40.5°F
51%
0 in
0%
0%
14.3 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 19.2 μg/m3
PM10: 19.39 μg/m3
Carbon Monoxide: 247.41 μg/m3
Nitrogen Dioxide: 15.59 μg/m3
Sulphur Dioxide: 5.78 μg/m3
Ozone: 54.6 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 12:22 AM
Sunset: 5:41 PM
Daylight: 10 hrs 37 mins
Moonrise: 2:00 AM
Moon Transit: 6:41 AM
Moonset: 11:18 AM
Moon Phase: Last Quarter
Moon Illumination: 30.3%

Best Times for Fishing or Hunting

Major Periods

6:11 AM - 8:41 AM
8:23 PM - 10:53 PM

Minor Periods

10:48 AM - 12:18 AM
1:30 AM - 3:00 AM

Action Rating: 2 out of 5

Wednesday, February 11, 2026

Weather Forecast

Overcast
38.1°F
32.1°F
38.5°F
66%
0 in
0%
0%
14.3 mph
0.6


Air Quality

AQI: 2 - Moderate
PM2.5: 17.12 μg/m3
PM10: 17.37 μg/m3
Carbon Monoxide: 250.39 μg/m3
Nitrogen Dioxide: 12.17 μg/m3
Sulphur Dioxide: 6.18 μg/m3
Ozone: 68.84 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 12:22 AM
Sunset: 5:42 PM
Daylight: 10 hrs 39 mins
Moonrise: 3:00 AM
Moon Transit: 7:31 AM
Moonset: 12:01 AM
Moon Phase: Last Quarter
Moon Illumination: 20.5%

Best Times for Fishing or Hunting

Major Periods

7:01 AM - 9:31 AM
9:14 PM - 11:44 PM

Minor Periods

11:31 AM - 1:01 PM
2:30 AM - 4:00 AM

Action Rating: 3 out of 5

Thursday, February 12, 2026

Weather Forecast

Sunny
40.6°F
28.9°F
33.4°F
61%
0 in
0%
0%
14.5 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 6.39 μg/m3
PM10: 6.42 μg/m3
Carbon Monoxide: 252.27 μg/m3
Nitrogen Dioxide: 12.87 μg/m3
Sulphur Dioxide: 5.87 μg/m3
Ozone: 57.69 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:22 AM
Sunset: 5:43 PM
Daylight: 10 hrs 41 mins
Moonrise: 3:56 AM
Moon Transit: 8:23 AM
Moonset: 12:51 AM
Moon Phase: Waning Crescent
Moon Illumination: 12.2%

Best Times for Fishing or Hunting

Major Periods

7:53 AM - 10:23 AM
12:00 AM - 12:00 AM

Minor Periods

12:21 AM - 1:51 PM
3:26 AM - 4:56 AM

Action Rating: 2 out of 5

Friday, February 13, 2026

Weather Forecast

Sunny
39.2°F
26.9°F
31.5°F
60%
0 in
0%
0%
9.8 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: 7:01 AM
Sun Transit: 12:22 AM
Sunset: 5:44 PM
Daylight: 10 hrs 43 mins
Moonrise: 4:46 AM
Moon Transit: 9:15 AM
Moonset: 1:48 PM
Moon Phase: Waning Crescent
Moon Illumination: 5.8%

Best Times for Fishing or Hunting

Major Periods

8:45 AM - 11:15 AM
12:00 AM - 12:00 AM

Minor Periods

1:18 PM - 2:48 PM
4:16 AM - 5:46 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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