Herndon, VA Weather

    09:00 Friday
    Scattered clouds
    Scattered clouds
    9° Feels like 7°
    Moderate west wind West 15 - 33 km/h
    • Today 19 Dec. Moderate rain with partly cloudy skies 90% 13 mm 14° / -3° Strong west wind 33 - 71 km/h
    • Tomorrow 20 Dec. Scattered clouds 7° / -4° Moderate south wind 22 - 43 km/h
    • Sunday 21 Dec. Scattered clouds 8° / -3° Moderate northwest wind 21 - 46 km/h
    • Monday 22 Dec. Clear 3° / -5° Moderate north wind 13 - 26 km/h
    • Tuesday 23 Dec. Partly cloudy 10° / -1° Moderate south wind 22 - 48 km/h
    • Wednesday 24 Dec. Partly cloudy 10° / 4° Moderate north wind 16 - 37 km/h
    • Thursday 25 Dec. Scattered clouds 18° / 3° Moderate south wind 14 - 32 km/h

    Weather Forecast for Herndon, VA Today

    , 19 December

    Tomorrow

    , 20 December
    10:00 Scattered clouds 9° Scattered clouds
    Feels Like 7°
    Moderate west wind West 15 - 33 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 10% 0 mm
    • Humidity Humidity 77%
    • Dew Point Dew Point 5 °C
    • Clouds Clouds 11%
    • Feels Like Feels Like 7 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 15 km/h
    • Pressure Pressure 999 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 33 km/h
    • Snowline Snowline 6562 ft
    11:00 Clear 11° Sunny
    Feels Like 11°
    Moderate west wind West 16 - 35 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 56%
    • Dew Point Dew Point 3 °C
    • Clouds Clouds 6%
    • Feels Like Feels Like 11 °C
    • Visibility Visibility 45 km
    • Wind Wind - Average 16 km/h
    • Pressure Pressure 999 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 35 km/h
    • Snowline Snowline 4265 ft
    12:00 Partly cloudy 12° Partly cloudy
    Feels Like 12°
    Strong west wind West 30 - 61 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 10% 0 mm
    • Humidity Humidity 46%
    • Dew Point Dew Point 1 °C
    • Clouds Clouds 91%
    • Feels Like Feels Like 12 °C
    • Visibility Visibility 50 km
    • Wind Wind - Average 30 km/h
    • Pressure Pressure 1000 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 61 km/h
    • Snowline Snowline 4265 ft
    13:00 Scattered clouds 7° Scattered clouds
    Feels Like 3°
    Strong west wind West 31 - 70 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 45%
    • Dew Point Dew Point -4 °C
    • Clouds Clouds 40%
    • Feels Like Feels Like 3 °C
    • Visibility Visibility 50 km
    • Wind Wind - Average 31 km/h
    • Pressure Pressure 1002 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 70 km/h
    • Snowline Snowline 2953 ft
    14:00 Scattered clouds 6° Scattered clouds
    Feels Like 2°
    Strong west wind West 33 - 70 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 46%
    • Dew Point Dew Point -5 °C
    • Clouds Clouds 37%
    • Feels Like Feels Like 2 °C
    • Visibility Visibility 50 km
    • Wind Wind - Average 33 km/h
    • Pressure Pressure 1004 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 70 km/h
    • Snowline Snowline 2297 ft
    15:00 Scattered clouds 4° Scattered clouds
    Feels Like 0°
    Strong west wind West 29 - 69 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 46%
    • Dew Point Dew Point -6 °C
    • Clouds Clouds 31%
    • Feels Like Feels Like 0 °C
    • Visibility Visibility 50 km
    • Wind Wind - Average 29 km/h
    • Pressure Pressure 1006 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 69 km/h
    • Snowline Snowline 1640 ft
    16:00 Scattered clouds 2° Scattered clouds
    Feels Like -3°
    Strong west wind West 28 - 65 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 48%
    • Dew Point Dew Point -8 °C
    • Clouds Clouds 49%
    • Feels Like Feels Like -3 °C
    • Visibility Visibility 50 km
    • Wind Wind - Average 28 km/h
    • Pressure Pressure 1008 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 65 km/h
    • Snowline Snowline 984 ft
    Partly cloudy 17:00 Partly cloudy 1° Partly cloudy
    Feels Like -5°
    Strong northwest wind Northwest 27 - 58 km/h
    		UV Index 0 Low SPF: no
    17:00 Partly cloudy 1° Partly cloudy
    Feels Like -5°
    Strong northwest wind Northwest 27 - 58 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 47%
    • Dew Point Dew Point -9 °C
    • Clouds Clouds 83%
    • Feels Like Feels Like -5 °C
    • Visibility Visibility 50 km
    • Wind Wind - Average 27 km/h
    • Pressure Pressure 1010 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 58 km/h
    • Snowline Snowline 656 ft
    18:00 Scattered clouds 0° Scattered clouds
    Feels Like -5°
    Strong northwest wind Northwest 18 - 57 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 48%
    • Dew Point Dew Point -10 °C
    • Clouds Clouds 14%
    • Feels Like Feels Like -5 °C
    • Visibility Visibility 50 km
    • Wind Wind - Average 18 km/h
    • Pressure Pressure 1012 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 57 km/h
    • Snowline Snowline 328 ft
    19:00 Clear skies 0° Clear
    Feels Like -5°
    Moderate west wind West 15 - 37 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 49%
    • Dew Point Dew Point -10 °C
    • Clouds Clouds 3%
    • Feels Like Feels Like -5 °C
    • Visibility Visibility 50 km
    • Wind Wind - Average 15 km/h
    • Pressure Pressure 1013 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 37 km/h
    • Snowline Snowline 0 ft
    Clear 20:00 Clear skies -1° Clear
    Feels Like -5°
    Moderate northwest wind Northwest 18 - 36 km/h
    		UV Index 0 Low SPF: no
    20:00 Clear skies -1° Clear
    Feels Like -5°
    Moderate northwest wind Northwest 18 - 36 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 49%
    • Dew Point Dew Point -10 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like -5 °C
    • Visibility Visibility 50 km
    • Wind Wind - Average 18 km/h
    • Pressure Pressure 1015 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 36 km/h
    • Snowline Snowline 0 ft
    21:00 Clear skies -1° Clear
    Feels Like -6°
    Moderate northwest wind Northwest 19 - 40 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 48%
    • Dew Point Dew Point -11 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like -6 °C
    • Visibility Visibility 50 km
    • Wind Wind - Average 19 km/h
    • Pressure Pressure 1016 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 40 km/h
    • Snowline Snowline 0 ft
    22:00 Scattered clouds -2° Scattered clouds
    Feels Like -6°
    Moderate northwest wind Northwest 15 - 39 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 48%
    • Dew Point Dew Point -11 °C
    • Clouds Clouds 13%
    • Feels Like Feels Like -6 °C
    • Visibility Visibility 50 km
    • Wind Wind - Average 15 km/h
    • Pressure Pressure 1017 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 39 km/h
    • Snowline Snowline 0 ft
    Clear 23:00 Clear skies -2° Clear
    Feels Like -6°
    Moderate northwest wind Northwest 14 - 30 km/h
    		UV Index 0 Low SPF: no
    23:00 Scattered clouds -2° Scattered clouds
    Feels Like -6°
    Moderate northwest wind Northwest 14 - 30 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 50%
    • Dew Point Dew Point -11 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like -6 °C
    • Visibility Visibility 50 km
    • Wind Wind - Average 14 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 30 km/h
    • Snowline Snowline 984 ft
    24:00 Scattered clouds -2° Scattered clouds
    Feels Like -7°
    Moderate northwest wind Northwest 17 - 37 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 49%
    • Dew Point Dew Point -12 °C
    • Clouds Clouds 41%
    • Feels Like Feels Like -7 °C
    • Visibility Visibility 50 km
    • Wind Wind - Average 17 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 37 km/h
    • Snowline Snowline 6234 ft

    Sunrise and Sunset

    Sunrise 07:23 Sunset 16:49
    First light 06:53 Midday 12:06 Last light 17:19
    Day length 9h 26m

    Remaining daylight 7h 2m

    Lunar calendar

    Mon Tue Wed Thu Fri Sat Sun
    19 New Moon
    20 New Moon
    21 New Moon
    22 First Quarter
    23 First Quarter
    24 First Quarter
    25 First Quarter
    26 First Quarter
    27 First Quarter
    28 First Quarter
    29 First Quarter
    30 First Quarter
    31 First Quarter
    1 First Quarter

    Air quality in Herndon today

    Detail
    31
    Fair O₃ (76 µg/m³)
    • Little health risk.
    • Sensitive people should consider reducing prolonged or intense outdoor activities if they experience symptoms.

    Weather graphs
    Maximum Minimum Rainfall

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