weather.gov | weather.gov |
 |  |  | |
 |
 | Home | News | Organization |  |
| Point Forecast: Tysons Corner VA 38.93N 77.25W (Elev. 115 m) |
Last Update: 10:33 pm EDT May 19, 2022 |
 |
|
[show menu] |
| Date | 05/19 | 05/20 | ||||||||||||||||||||||
| Hour (EDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°C) | 21 | 20 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 21 | 23 | 26 | 27 | 29 | 30 | 31 | 32 | 32 | 32 | 32 | 31 | 30 | 29 | 28 |
| Dewpoint (°C) | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 16 | 17 | 17 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 19 | 19 | 18 |
| Heat Index (°C) | 26 | 28 | 30 | 31 | 32 | 33 | 33 | 33 | 33 | 32 | 31 | 30 | 29 | |||||||||||
| Surface Wind (mph) | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 5 | 6 | 6 | 7 | 7 | 8 | 9 | 8 | 8 | 8 | 7 | 5 | 5 | 5 |
| Wind Dir | SW | S | S | S | S | S | S | S | SE | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 12 | 21 | 30 | 39 | 42 | 46 | 49 | 52 | 55 | 58 | 52 | 61 | 40 | 29 | 39 | 26 | 36 | 37 | 38 | 47 | 44 | 57 | 58 | 50 |
| Precipitation Potential (%) | 2 | 2 | 3 | 8 | 8 | 8 | 16 | 16 | 16 | 12 | 12 | 12 | 10 | 10 | 10 | 14 | 14 | 14 | 15 | 15 | 15 | 5 | 5 | 5 |
| Relative Humidity (%) | 68 | 70 | 73 | 78 | 78 | 84 | 84 | 81 | 84 | 78 | 69 | 62 | 58 | 53 | 51 | 48 | 47 | 47 | 44 | 44 | 47 | 51 | 55 | 56 |
| Rain | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- |
| Date | 05/21 | |||||||||||||||||||||||
| Hour (EDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°C) | 26 | 26 | 25 | 25 | 24 | 23 | 23 | 24 | 24 | 26 | 27 | 29 | 31 | 33 | 34 | 34 | 35 | 35 | 34 | 34 | 32 | 31 | 29 | 28 |
| Dewpoint (°C) | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 |
| Heat Index (°C) | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 26 | 28 | 31 | 32 | 34 | 35 | 36 | 37 | 36 | 36 | 35 | 33 | 32 | 30 | 29 | ||
| Surface Wind (mph) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 6 | 6 | 6 | 5 | 5 | 6 | 6 | 7 | 7 | 6 | 6 | 6 | 6 |
| Wind Dir | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | W | W | SW | SW | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 43 | 31 | 29 | 25 | 16 | 15 | 14 | 16 | 19 | 21 | 21 | 20 | 20 | 24 | 31 | 35 | 34 | 31 | 29 | 31 | 35 | 37 | 37 | 38 |
| Precipitation Potential (%) | 5 | 5 | 5 | 2 | 2 | 2 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 16 | 16 | 16 | 16 | 16 | 10 | 10 | 10 |
| Relative Humidity (%) | 62 | 64 | 67 | 67 | 71 | 73 | 73 | 69 | 69 | 64 | 58 | 53 | 48 | 44 | 40 | 39 | 37 | 36 | 37 | 38 | 41 | 43 | 48 | 51 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- |
| ||||||||||||
| Webmaster NOAA's National Weather Service Baltimore, MD/Washington, D.C. | Disclaimer Credits Glossary | Privacy Policy About Us Career Opportunities |