Weather in Herndon for 5 days
The exact time in Herndon:
|
Local time.
Time zone: GMT -4
Summertime (+1 hour)
* weather indicated in local timeFriday, April 19, 2024
| The Sun: | Sunrise 06:26, Sunset 19:51. |
| The Moon: | Moonrise 15:56, Moonset 04:41,  |
| Geomagnetic Field: Quiet |
| eveningfrom 23:00 to 00:00 |  +13...+14 °COvercast |
Wind: gentle breeze, southeast, speed 7-14 km/h
Wind gusts: 25 km/h
Relative humidity: 84-93%
Cloudiness: 100%
Atmospheric pressure: 1003-1004 hPa
Visibility: 78-100%
On land:
Leaves and small twigs in constant motion; wind extends light flag.At Sea:
Large wavelets. Crests begin to break. Foam of glassy appearance. Perhaps scattered white horses.Wind gusts: 25 km/h
Relative humidity: 84-93%
Cloudiness: 100%
Atmospheric pressure: 1003-1004 hPa
Visibility: 78-100%
Saturday, April 20, 2024
| The Sun: | Sunrise 06:25, Sunset 19:52. |
| The Moon: | Moonrise 16:55, Moonset 05:02, |
| Geomagnetic Field: Active | |
| Ultraviolet index: 6,6 (High) A UV index reading of 6 to 7 means high risk of harm from unprotected sun exposure.
Protection against skin and eye damage is needed.
Reduce time in the sun between 10 a.m. and 4 p.m. If outdoors,
seek shade and wear sun protective clothing, a wide-brimmed hat, and UV-blocking sunglasses.
Generously apply broad spectrum SPF 30+ sunscreen every 2 hours,
even on cloudy days, and after swimming or sweating. Bright surfaces, such as sand, water, and snow,
will increase UV exposure. |
| nightfrom 00:01 to 06:00 |  +13 °CShowers |
Wind: light breeze, southwest, speed 4-11 km/h
Wind gusts: 32 km/h
Relative humidity: 93-96%
Cloudiness: 100%
Atmospheric pressure: 1001-1004 hPa
Amount of precipitations: 1,3 mm
Visibility: 72-100%
On land:
Wind felt on face; leaves rustle; ordinary vanes moved by wind.At Sea:
Small wavelets, still short, but more pronounced. Crests have a glassy appearance and do not break.Wind gusts: 32 km/h
Relative humidity: 93-96%
Cloudiness: 100%
Atmospheric pressure: 1001-1004 hPa
Amount of precipitations: 1,3 mm
Visibility: 72-100%
| morningfrom 06:01 to 12:00 |  +11...+13 °CShowers |
Wind: gentle breeze, northwest, speed 11-18 km/h
Wind gusts: 40 km/h
Relative humidity: 59-95%
Cloudiness: 100%
Atmospheric pressure: 1003-1004 hPa
Amount of precipitations: 0,6 mm
Visibility: 98-100%
Wind gusts: 40 km/h
Relative humidity: 59-95%
Cloudiness: 100%
Atmospheric pressure: 1003-1004 hPa
Amount of precipitations: 0,6 mm
Visibility: 98-100%
| afternoonfrom 12:01 to 18:00 |  +15...+20 °CClear |
Wind: moderate breeze, northwest, speed 14-25 km/h
Wind gusts: 47 km/h
Relative humidity: 23-46%
Cloudiness: 26%
Atmospheric pressure: 1000-1004 hPa
Visibility: 100%
On land:
Raises dust and loose paper; small branches are moved.At Sea:
Small waves, becoming larger; fairly frequent white horses.Wind gusts: 47 km/h
Relative humidity: 23-46%
Cloudiness: 26%
Atmospheric pressure: 1000-1004 hPa
Visibility: 100%
| eveningfrom 18:01 to 00:00 |  +11...+19 °CVariably cloudy |
Wind: gentle breeze, northwest, speed 14-18 km/h
Wind gusts: 43 km/h
Relative humidity: 24-48%
Cloudiness: 100%
Atmospheric pressure: 1000-1004 hPa
Visibility: 100%
Wind gusts: 43 km/h
Relative humidity: 24-48%
Cloudiness: 100%
Atmospheric pressure: 1000-1004 hPa
Visibility: 100%
Sunday, April 21, 2024
| The Sun: | Sunrise 06:24, Sunset 19:53. |
| The Moon: | Moonrise 17:54, Moonset 05:22, |
| Geomagnetic Field: Active | |
| Ultraviolet index: 5,7 (Moderate) A UV index reading of 3 to 5 means moderate risk of harm from unprotected sun exposure.
Stay in shade near midday when the sun is strongest. If outdoors, wear sun protective clothing,
a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen
every 2 hours, even on cloudy days, and after swimming or sweating. Bright surfaces, such as sand,
water, and snow, will increase UV exposure. |
| nightfrom 00:01 to 06:00 |  +6...+10 °CCloudy |
Wind: gentle breeze, northern, speed 4-14 km/h
Wind gusts: 40 km/h
Relative humidity: 49-56%
Cloudiness: 100%
Atmospheric pressure: 1004-1005 hPa
Visibility: 100%
Wind gusts: 40 km/h
Relative humidity: 49-56%
Cloudiness: 100%
Atmospheric pressure: 1004-1005 hPa
Visibility: 100%
| morningfrom 06:01 to 12:00 | +6...+11 °CCloudy |
Wind: light breeze, northern, speed 4-11 km/h
Wind gusts: 22 km/h
Relative humidity: 45-64%
Cloudiness: 99%
Atmospheric pressure: 1007 hPa
Visibility: 100%
Wind gusts: 22 km/h
Relative humidity: 45-64%
Cloudiness: 99%
Atmospheric pressure: 1007 hPa
Visibility: 100%
| afternoonfrom 12:01 to 18:00 | +12...+14 °COvercast |
Wind: gentle breeze, northwest, speed 14-18 km/h
Wind gusts: 25 km/h
Relative humidity: 44-45%
Cloudiness: 100%
Atmospheric pressure: 1003-1005 hPa
Visibility: 100%
Wind gusts: 25 km/h
Relative humidity: 44-45%
Cloudiness: 100%
Atmospheric pressure: 1003-1005 hPa
Visibility: 100%
| eveningfrom 18:01 to 00:00 | +9...+12 °CCloudy |
Wind: gentle breeze, northern, speed 7-14 km/h
Wind gusts: 25 km/h
Relative humidity: 46-61%
Cloudiness: 100%
Atmospheric pressure: 1003-1004 hPa
Visibility: 100%
Wind gusts: 25 km/h
Relative humidity: 46-61%
Cloudiness: 100%
Atmospheric pressure: 1003-1004 hPa
Visibility: 100%
Monday, April 22, 2024
| The Sun: | Sunrise 06:22, Sunset 19:54. |
| The Moon: | Moonrise 18:53, Moonset 05:42, |
| Geomagnetic Field: Unstable | |
| Ultraviolet index: 6,2 (High) |
| nightfrom 00:01 to 06:00 |  +6...+9 °CClear |
Wind: light breeze, northwest, speed 7-11 km/h
Wind gusts: 29 km/h
Relative humidity: 57-62%
Cloudiness: 73%
Atmospheric pressure: 1004-1005 hPa
Visibility: 100%
Wind gusts: 29 km/h
Relative humidity: 57-62%
Cloudiness: 73%
Atmospheric pressure: 1004-1005 hPa
Visibility: 100%
| morningfrom 06:01 to 12:00 | +5...+13 °CClear |
Wind: light breeze, northwest, speed 7-11 km/h
Wind gusts: 29 km/h
Relative humidity: 42-65%
Cloudiness: 0%
Atmospheric pressure: 1005-1008 hPa
Visibility: 100%
Wind gusts: 29 km/h
Relative humidity: 42-65%
Cloudiness: 0%
Atmospheric pressure: 1005-1008 hPa
Visibility: 100%
| afternoonfrom 12:01 to 18:00 |  +14...+16 °CPartly cloudy |
Wind: light breeze, northwest, speed 11 km/h
Wind gusts: 29 km/h
Relative humidity: 30-36%
Cloudiness: 15%
Atmospheric pressure: 1007-1008 hPa
Visibility: 100%
Wind gusts: 29 km/h
Relative humidity: 30-36%
Cloudiness: 15%
Atmospheric pressure: 1007-1008 hPa
Visibility: 100%
| eveningfrom 18:01 to 00:00 | +11...+16 °CClear |
Wind: light breeze, northern, speed 7 km/h
Wind gusts: 25 km/h
Relative humidity: 33-55%
Cloudiness: 10%
Atmospheric pressure: 1007-1008 hPa
Visibility: 100%
Wind gusts: 25 km/h
Relative humidity: 33-55%
Cloudiness: 10%
Atmospheric pressure: 1007-1008 hPa
Visibility: 100%
Tuesday, April 23, 2024
| The Sun: | Sunrise 06:21, Sunset 19:55. |
| The Moon: | Moonrise 19:55, Moonset 06:03,  |
| Geomagnetic Field: Quiet | |
| Ultraviolet index: 6,2 (High) |
| nightfrom 00:01 to 06:00 | +8...+11 °CClear |
Wind: light breeze, southern, speed 7 km/h
Wind gusts: 18 km/h
Relative humidity: 55-58%
Cloudiness: 0%
Atmospheric pressure: 1007-1008 hPa
Visibility: 100%
Wind gusts: 18 km/h
Relative humidity: 55-58%
Cloudiness: 0%
Atmospheric pressure: 1007-1008 hPa
Visibility: 100%
| morningfrom 06:01 to 12:00 | +8...+16 °CClear |
Wind: gentle breeze, southern, speed 7-14 km/h
Wind gusts: 40 km/h
Relative humidity: 46-66%
Cloudiness: 12%
Atmospheric pressure: 1007-1008 hPa
Visibility: 100%
Wind gusts: 40 km/h
Relative humidity: 46-66%
Cloudiness: 12%
Atmospheric pressure: 1007-1008 hPa
Visibility: 100%
| afternoonfrom 12:01 to 18:00 | +18...+20 °CClear |
Wind: moderate breeze, southern, speed 18-22 km/h
Wind gusts: 50 km/h
Relative humidity: 33-42%
Cloudiness: 90%
Atmospheric pressure: 1000-1005 hPa
Visibility: 100%
Wind gusts: 50 km/h
Relative humidity: 33-42%
Cloudiness: 90%
Atmospheric pressure: 1000-1005 hPa
Visibility: 100%
| eveningfrom 18:01 to 00:00 | +14...+20 °CShowers |
Wind: moderate breeze, southern, speed 18-22 km/h
Wind gusts: 58 km/h
Relative humidity: 36-56%
Cloudiness: 97%
Atmospheric pressure: 999-1000 hPa
Amount of precipitations: 0,4 mm
Visibility: 100%
Wind gusts: 58 km/h
Relative humidity: 36-56%
Cloudiness: 97%
Atmospheric pressure: 999-1000 hPa
Amount of precipitations: 0,4 mm
Visibility: 100%
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Temperature trend
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Directory and geographical data
| USA | |
| +1 | |
| Commonwealth of Virginia | |
| Fairfax County | |
| Herndon | |
| America/New_York, GMT -4. Summertime (+1 hour) | |
| DMS: Latitude: 38°58'11" N; Longitude: 77°23'10" W; DD: 38.9696, -77.3861; Altitude (elevation), in meters: 110; | |
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