Herndon, VA - Extended Weather Forecast

13:00 Saturday
  • Saturday 13 Dec. Snow with cloudy skies 30% 1.4 mm / -6° Moderate northwest wind 23 - 48 km/h
  • Sunday 14 Dec. Scattered clouds -2° / -8° Strong northwest wind 25 - 59 km/h
  • Monday 15 Dec. Scattered clouds -2° / -8° Moderate northwest wind 20 - 49 km/h
  • Tuesday 16 Dec. Partly cloudy / -10° Moderate southwest wind 17 - 41 km/h
  • Wednesday 17 Dec. Partly cloudy / Moderate south wind 12 - 33 km/h
  • Thursday 18 Dec. Partly cloudy 15° / Moderate south wind 18 - 37 km/h
  • Friday 19 Dec. Scattered clouds 19° / Moderate southwest wind 15 - 32 km/h
Saturday, 13 December
Sunday, 14 December
01:00 Overcast -1° Overcast
Feels Like -2°
Gentle northwest wind Northwest 6 - 13 km/h
UV Index 0 Low SPF: no
  • Rain Rain 10% 0 mm
  • Humidity Humidity 90%
  • Dew Point Dew Point -2 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 0.39 in
  • Feels Like Feels Like -2 °C
  • Wind Wind - Average 6 km/h
  • Pressure Pressure 1015 hPa
  • Snowline Snowline 0 ft
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 13 km/h
  • Visibility Visibility 20 km
04:00 Partly cloudy -2° Partly cloudy
Feels Like -3°
Gentle northwest wind Northwest 6 - 14 km/h
UV Index 0 Low SPF: no
  • Rain Rain 10% 0 mm
  • Humidity Humidity 85%
  • Dew Point Dew Point -4 °C
  • Clouds Clouds 94%
  • Snow depth Snow depth 0.39 in
  • Feels Like Feels Like -3 °C
  • Wind Wind - Average 6 km/h
  • Pressure Pressure 1014 hPa
  • Snowline Snowline 0 ft
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 14 km/h
  • Visibility Visibility 25 km
07:00 Overcast -2° Overcast
Feels Like -4°
Gentle west wind West 5 - 15 km/h
UV Index 0 Low SPF: no
  • Rain Rain 10% 0 mm
  • Humidity Humidity 81%
  • Dew Point Dew Point -5 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 0.39 in
  • Feels Like Feels Like -4 °C
  • Wind Wind - Average 5 km/h
  • Pressure Pressure 1014 hPa
  • Snowline Snowline 0 ft
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 15 km/h
  • Visibility Visibility 25 km
10:00 Snow with cloudy skies 30% 0.08 in -2° Snow
Feels Like -4°
Gentle south wind South 8 - 18 km/h
UV Index 0 Low SPF: no
  • Snow Snow 30% 0.08 in
  • Humidity Humidity 82%
  • Dew Point Dew Point -4 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 0.79 in
  • Feels Like Feels Like -4 °C
  • Wind Wind - Average 8 km/h
  • Pressure Pressure 1011 hPa
  • Snowline Snowline 0 ft
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 18 km/h
  • Visibility Visibility 16 km
13:00 Snow with cloudy skies 30% 0.16 in -1° Snow
Feels Like -4°
Moderate south wind South 11 - 24 km/h
UV Index 1 Low SPF: no
  • Snow Snow 30% 0.16 in
  • Humidity Humidity 84%
  • Dew Point Dew Point -3 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 0.79 in
  • Feels Like Feels Like -4 °C
  • Wind Wind - Average 11 km/h
  • Pressure Pressure 1008 hPa
  • Snowline Snowline 0 ft
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 24 km/h
  • Visibility Visibility 6 km
16:00 Snow with cloudy skies 30% 0.16 in -1° Snow
Feels Like -4°
Moderate west wind West 7 - 32 km/h
UV Index 0 Low SPF: no
  • Snow Snow 30% 0.16 in
  • Humidity Humidity 81%
  • Dew Point Dew Point -4 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 1.18 in
  • Feels Like Feels Like -4 °C
  • Wind Wind - Average 7 km/h
  • Pressure Pressure 1009 hPa
  • Snowline Snowline 0 ft
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 32 km/h
  • Visibility Visibility 20 km
19:00 Snow with cloudy skies 30% 0.16 in -2° Snow
Feels Like -8°
Moderate northwest wind Northwest 22 - 41 km/h
UV Index 0 Low SPF: no
  • Snow Snow 30% 0.16 in
  • Humidity Humidity 77%
  • Dew Point Dew Point -6 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 1.18 in
  • Feels Like Feels Like -8 °C
  • Wind Wind - Average 22 km/h
  • Pressure Pressure 1009 hPa
  • Snowline Snowline 0 ft
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 41 km/h
  • Visibility Visibility 40 km
22:00 Scattered clouds -5° Scattered clouds
Feels Like -11°
Moderate northwest wind Northwest 23 - 48 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 74%
  • Dew Point Dew Point -9 °C
  • Clouds Clouds 55%
  • Snow depth Snow depth 1.18 in
  • Feels Like Feels Like -11 °C
  • Wind Wind - Average 23 km/h
  • Pressure Pressure 1012 hPa
  • Snowline Snowline 0 ft
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 48 km/h
  • Visibility Visibility 40 km

Sunrise and Sunset

Sunrise 07:14 Sunset 16:47
First light 06:44 Midday 12:00 Last light 17:16
Day length 9h 33m

Remaining daylight 3h 25m

Lunar calendar

Mon Tue Wed Thu Fri Sat Sun
6 Last Quarter
7 Last Quarter
8 Last Quarter
9 Last Quarter
10 Last Quarter
11 Last Quarter
12 Last Quarter
13 Last Quarter
14 Last Quarter
15 Last Quarter
16 Last Quarter
17 Last Quarter
18 New Moon
19 New Moon

Air quality in Herndon today

Detail
46
Moderate PM₂₅ (32 µg/m³)
  • Possible health risk.
  • Enjoy your usual outdoor activities if you do not experience symptoms.
  • Sensitive people should limit prolonged or intense outdoor activities.

Weather graphs

Maximum Minimum Rainfall

Videos

A parhelion and false sun appear in the skies over Hailar, China
A parhelion and false sun appear in the skies over Hailar, China