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Loudoun County
Weather map

Hourly forecast

  • 8 pm: +26°, clear, Feels like +28°.

  • Sunset 26 July 08:27 pm

  • 9 pm: +26°, clear, Feels like +29°.

  • 10 pm: +24°, clear, Feels like +27°.

  • 11 pm: +22°, clear, Feels like +24°.

  • 12 am: +20°, clear, Feels like +22°.

  • 1 am: +19°, clear, Feels like +20°.

  • 2 am: +19°, clear, Feels like +21°.

  • 3 am: +18°, clear, Feels like +19°.

  • 4 am: +18°, clear, Feels like +19°.

  • 5 am: +17°, clear, Feels like +18°.

  • 6 am: +17°, clear, Feels like +18°.

  • Sunrise 27 July 06:06 am

  • 7 am: +19°, clear, Feels like +21°.

  • 8 am: +22°, clear, Feels like +24°.

  • 9 am: +24°, clear, Feels like +25°.

  • 10 am: +27°, clear, Feels like +29°.

  • 11 am: +28°, clear, Feels like +30°.

  • 12 pm: +29°, clear, Feels like +30°.

  • 1 pm: +30°, clear, Feels like +31°.

  • 2 pm: +30°, clear, Feels like +32°.

  • 3 pm: +31°, clear, Feels like +32°.

  • 4 pm: +31°, clear, Feels like +31°.

  • 5 pm: +31°, clear, Feels like +31°.

  • 6 pm: +30°, clear, Feels like +30°.

  • 7 pm: +29°, clear, Feels like +29°.

  • 8 pm: +26°, clear, Feels like +26°.

  • Sunset 27 July 08:26 pm

  • 9 pm: +24°, clear, Feels like +25°.

  • 10 pm: +23°, clear, Feels like +24°.

  • 11 pm: +22°, clear, Feels like +23°.

Next week

it will warm up to +34⁠° · partly cloudy, no precipitation · light winds at 4 m⁠/⁠s with gusts up to 10 m⁠/⁠s

Light
Calm
Normal
57%
Normal
755 mmHg

Data sources

Click to view information from weather data sources

Air quality forecast

Moderate

Air quality is acceptable. Enjoy your usual outdoor activities.

Loudoun County. Weather forecast for today, 26 July: in the morning air temperature +23°, feels like +24°, clear, wind speed 2.7 meters per second, north-easterly, humidity 66%, pressure 757 millimeters of mercury; in the afternoon +28°, feels like +30°, mostly clear, wind speed 2.7 meters per second, north-easterly, humidity 42%, pressure 757 millimeters of mercury; in the evening +27°, feels like +28°, clear, wind speed 1.6 meters per second, easterly, humidity 56%, pressure 755 millimeters of mercury; in the night +20°, feels like +22°, clear, wind speed 0.8 meters per second, north-westerly, humidity 82%, pressure 756 millimeters of mercury; uv index: 8, very high; magnetic field: unsettled; daytime water temperature +28°; sunrise 6:05 am; sunset 8:27 pm; daylight hours: 14 hr 22 min

26Julytoday

Pressure,
mmHgHumidityWind, m/sFeels like
morning
+20°...+26°
clear
757
66%
2.7
NE
+24°
afternoon
+27°...+28°
mostly clear
757
42%
2.7
NE
+30°
evening
+26°...+28°
clear
755
56%
1.6
E
+28°
night
+17°...+24°
clear
756
82%
0.8
NW
+22°
6:05 am
Daylight hours
14 hr 22 min
8:27 pm
Waning gibbous
UV Index8, very highMagnetic fieldunsettled

Loudoun County. Weather forecast for tomorrow, 27 July: in the morning air temperature +23°, feels like +26°, clear, wind speed 2.2 meters per second, northerly, humidity 70%, pressure 757 millimeters of mercury; in the afternoon +30°, feels like +31°, clear, wind speed 2.4 meters per second, north-easterly, humidity 33%, pressure 756 millimeters of mercury; in the evening +27°, feels like +27°, clear, wind speed 1.7 meters per second, easterly, humidity 45%, pressure 756 millimeters of mercury; in the night +20°, feels like +21°, clear, wind speed 1 meters per second, south-westerly, humidity 77%, pressure 757 millimeters of mercury; uv index: 8, very high; magnetic field: slightly active; daytime water temperature +31°; sunrise 6:06 am; sunset 8:26 pm; daylight hours: 14 hr 20 min

27Julytomorrow

Pressure,
mmHgHumidityWind, m/sFeels like
morning
+17°...+28°
clear
757
70%
2.2
N
+26°
afternoon
+29°...+31°
clear
756
33%
2.4
NE
+31°
evening
+24°...+30°
clear
756
45%
1.7
E
+27°
night
+18°...+23°
clear
757
77%
1
SW
+21°
6:06 am
Daylight hours
14 hr 20 min
8:26 pm
Waning gibbous
UV Index8, very highMagnetic fieldslightly active

Loudoun County. Weather forecast for Sunday, 28 July: in the morning air temperature +24°, feels like +28°, clear, wind speed 1.3 meters per second, westerly, humidity 71%, pressure 757 millimeters of mercury; in the afternoon +32°, feels like +35°, clear, wind speed 2 meters per second, southerly, humidity 36%, pressure 756 millimeters of mercury; in the evening +29°, feels like +30°, clear, wind speed 2 meters per second, southerly, humidity 47%, pressure 755 millimeters of mercury; in the night +23°, feels like +24°, clear, wind speed 2 meters per second, southerly, humidity 70%, pressure 755 millimeters of mercury; uv index: 8, very high; magnetic field: quiet; daytime water temperature +32°; sunrise 6:07 am; sunset 8:25 pm; daylight hours: 14 hr 18 min

28JulySunday

Pressure,
mmHgHumidityWind, m/sFeels like
morning
+18°...+30°
clear
757
71%
1.3
W
+28°
afternoon
+30°...+32°
clear
756
36%
2
S
+35°
evening
+26°...+31°
clear
755
47%
2
S
+30°
night
+21°...+25°
clear
755
70%
2
S
+24°
6:07 am
Daylight hours
14 hr 18 min
8:25 pm
Last quarter
UV Index8, very highMagnetic fieldquiet

Loudoun County. Weather forecast for Monday, 29 July: in the morning air temperature +25°, feels like +29°, clear, wind speed 2 meters per second, south-westerly, humidity 70%, pressure 755 millimeters of mercury; in the afternoon +33°, feels like +37°, clear, wind speed 3.2 meters per second, southerly, humidity 45%, pressure 754 millimeters of mercury; in the evening +30°, feels like +31°, mostly clear, wind speed 3.7 meters per second, southerly, humidity 52%, pressure 753 millimeters of mercury; in the night +24°, feels like +26°, partly cloudy, wind speed 2.7 meters per second, southerly, humidity 76%, pressure 752 millimeters of mercury; uv index: 8, very high; magnetic field: unsettled; daytime water temperature +34°; sunrise 6:08 am; sunset 8:24 pm; daylight hours: 14 hr 16 min

29JulyMonday

Pressure,
mmHgHumidityWind, m/sFeels like
morning
+21°...+30°
clear
755
70%
2
SW
+29°
afternoon
+32°...+34°
clear
754
45%
3.2
S
+37°
evening
+27°...+32°
mostly clear
753
52%
3.7
S
+31°
night
+23°...+25°
partly cloudy
752
76%
2.7
S
+26°
6:08 am
Daylight hours
14 hr 16 min
8:24 pm
Last quarter
UV Index8, very highMagnetic fieldunsettled

Loudoun County. Weather forecast for Tuesday, 30 July: in the morning air temperature +26°, feels like +29°, partly cloudy, wind speed 3.7 meters per second, southerly, humidity 76%, pressure 753 millimeters of mercury; in the afternoon +29°, feels like +33°, partly cloudy, wind speed 4 meters per second, southerly, humidity 65%, pressure 752 millimeters of mercury; in the evening +26°, feels like +29°, partly cloudy, wind speed 2.9 meters per second, southerly, humidity 84%, pressure 752 millimeters of mercury; in the night +23°, feels like +26°, partly cloudy, wind speed 2.4 meters per second, southerly, humidity 91%, pressure 752 millimeters of mercury; uv index: 8, very high; daytime water temperature +29°; sunrise 6:08 am; sunset 8:23 pm; daylight hours: 14 hr 15 min

30JulyTuesday

Pressure,
mmHgHumidityWind, m/sFeels like
morning
+24°...+28°
partly cloudy
753
76%
3.7
S
+29°
afternoon
+29°
partly cloudy
752
65%
4
S
+33°
evening
+26°
partly cloudy
752
84%
2.9
S
+29°
night
+22°...+24°
partly cloudy
752
91%
2.4
S
+26°
6:08 am
Daylight hours
14 hr 15 min
8:23 pm
Waning crescent
UV Index8, very high

Loudoun County. Weather forecast for Wednesday, 31 July: in the morning air temperature +26°, feels like +29°, overcast, wind speed 2.7 meters per second, south-westerly, humidity 82%, pressure 753 millimeters of mercury; in the afternoon +30°, feels like +32°, partly cloudy, wind speed 3.7 meters per second, south-westerly, humidity 64%, pressure 752 millimeters of mercury; in the evening +26°, feels like +29°, partly cloudy, wind speed 2.2 meters per second, south-easterly, humidity 75%, pressure 752 millimeters of mercury; in the night +23°, feels like +26°, partly cloudy, wind speed 2 meters per second, south-westerly, humidity 91%, pressure 753 millimeters of mercury; uv index: 1, low; daytime water temperature +30°; sunrise 6:09 am; sunset 8:22 pm; daylight hours: 14 hr 13 min

31JulyWednesday

Pressure,
mmHgHumidityWind, m/sFeels like
morning
+24°...+28°
overcast
753
82%
2.7
SW
+29°
afternoon
+30°
partly cloudy
752
64%
3.7
SW
+32°
evening
+26°
partly cloudy
752
75%
2.2
SE
+29°
night
+22°...+24°
partly cloudy
753
91%
2
SW
+26°
6:09 am
Daylight hours
14 hr 13 min
8:22 pm
Waning crescent
UV Index1, low

Loudoun County. Weather forecast for Thursday, 1 August: in the morning air temperature +27°, feels like +30°, partly cloudy, wind speed 2.4 meters per second, north-westerly, humidity 76%, pressure 754 millimeters of mercury; in the afternoon +32°, feels like +34°, partly cloudy, wind speed 2.7 meters per second, north-westerly, humidity 48%, pressure 753 millimeters of mercury; in the evening +28°, feels like +31°, partly cloudy, wind speed 1.8 meters per second, south-easterly, humidity 63%, pressure 752 millimeters of mercury; in the night +23°, feels like +25°, mostly clear, wind speed 1.7 meters per second, westerly, humidity 80%, pressure 752 millimeters of mercury; daytime water temperature +32°; sunrise 6:10 am; sunset 8:21 pm; daylight hours: 14 hr 11 min

1AugustThursday

Pressure,
mmHgHumidityWind, m/sFeels like
morning
+24°...+30°
partly cloudy
754
76%
2.4
NW
+30°
afternoon
+32°
partly cloudy
753
48%
2.7
NW
+34°
evening
+28°
partly cloudy
752
63%
1.8
SE
+31°
night
+22°...+24°
mostly clear
752
80%
1.7
W
+25°
6:10 am
Daylight hours
14 hr 11 min
8:21 pm
Waning crescent

Loudoun County. Weather forecast for Friday, 2 August: in the morning air temperature +29°, feels like +33°, partly cloudy, wind speed 2.2 meters per second, westerly, humidity 69%, pressure 753 millimeters of mercury; in the afternoon +34°, feels like +35°, partly cloudy, wind speed 3 meters per second, westerly, humidity 41%, pressure 751 millimeters of mercury; in the evening +28°, feels like +31°, partly cloudy, wind speed 2.2 meters per second, south-westerly, humidity 68%, pressure 751 millimeters of mercury; in the night +24°, feels like +27°, partly cloudy, wind speed 1.8 meters per second, south-westerly, humidity 81%, pressure 751 millimeters of mercury; daytime water temperature +34°; sunrise 6:11 am; sunset 8:20 pm; daylight hours: 14 hr 9 min

2AugustFriday

Pressure,
mmHgHumidityWind, m/sFeels like
morning
+25°...+32°
partly cloudy
753
69%
2.2
W
+33°
afternoon
+33°...+34°
partly cloudy
751
41%
3
W
+35°
evening
+28°
partly cloudy
751
68%
2.2
SW
+31°
night
+23°...+25°
partly cloudy
751
81%
1.8
SW
+27°
6:11 am
Daylight hours
14 hr 9 min
8:20 pm
Waning crescent

Loudoun County. Weather forecast for Saturday, 3 August: in the morning air temperature +28°, feels like +31°, partly cloudy, wind speed 3 meters per second, north-westerly, humidity 73%, pressure 753 millimeters of mercury; in the afternoon +33°, feels like +34°, partly cloudy, wind speed 3.7 meters per second, westerly, humidity 48%, pressure 752 millimeters of mercury; in the evening +28°, feels like +30°, partly cloudy, wind speed 2.2 meters per second, south-easterly, humidity 60%, pressure 752 millimeters of mercury; in the night +24°, feels like +26°, partly cloudy, wind speed 1.8 meters per second, southerly, humidity 79%, pressure 753 millimeters of mercury; daytime water temperature +33°; sunrise 6:12 am; sunset 8:19 pm; daylight hours: 14 hr 7 min

3AugustSaturday

Pressure,
mmHgHumidityWind, m/sFeels like
morning
+25°...+30°
partly cloudy
753
73%
3
NW
+31°
afternoon
+33°
partly cloudy
752
48%
3.7
W
+34°
evening
+28°
partly cloudy
752
60%
2.2
SE
+30°
night
+23°...+25°
partly cloudy
753
79%
1.8
S
+26°
6:12 am
Daylight hours
14 hr 7 min
8:19 pm
Waning crescent

Loudoun County. Weather forecast for Sunday, 4 August: in the morning air temperature +29°, feels like +32°, partly cloudy, wind speed 2.7 meters per second, north-westerly, humidity 70%, pressure 754 millimeters of mercury; in the afternoon +33°, feels like +35°, partly cloudy, wind speed 3.2 meters per second, southerly, humidity 52%, pressure 753 millimeters of mercury; in the evening +28°, feels like +30°, partly cloudy, wind speed 2.2 meters per second, southerly, humidity 61%, pressure 753 millimeters of mercury; in the night +24°, feels like +26°, partly cloudy, wind speed 2.2 meters per second, northerly, humidity 80%, pressure 753 millimeters of mercury; daytime water temperature +33°; sunrise 6:13 am; sunset 8:18 pm; daylight hours: 14 hr 5 min

4AugustSunday

Pressure,
mmHgHumidityWind, m/sFeels like
morning
+26°...+31°
partly cloudy
754
70%
2.7
NW
+32°
afternoon
+32°...+33°
partly cloudy
753
52%
3.2
S
+35°
evening
+28°
partly cloudy
753
61%
2.2
S
+30°
night
+22°...+25°
partly cloudy
753
80%
2.2
N
+26°
6:13 am
Daylight hours
14 hr 5 min
8:18 pm
New moon

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