| Point Forecast: 2 Miles S Washington-Dulles International Airport VA 38.93N 77.45W (Elev. 91 m) |
Last Update: 10:29 pm EDT Jul 26, 2024 |
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| Date | 07/26 | 07/27 | ||||||||||||||||||||||
| 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) | 22 | 20 | 19 | 18 | 18 | 17 | 16 | 16 | 18 | 21 | 23 | 26 | 27 | 29 | 30 | 30 | 31 | 31 | 31 | 29 | 28 | 27 | 26 | 24 |
| Dewpoint (°C) | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 16 | 16 |
| Heat Index (°C) | 26 | 27 | 28 | 29 | 29 | 31 | 31 | 30 | 29 | 28 | 27 | 26 | 24 | |||||||||||
| Surface Wind (mph) | 3 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 5 | 6 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 |
| Wind Dir | S | S | W | N | N | N | N | N | N | N | N | NE | NE | NE | NE | NE | NE | NE | NE | E | E | SE | SE | SE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 28 | 21 | 12 | 7 | 6 | 10 | 4 | 4 | 4 | 6 | 10 | 18 | 18 | 12 | 12 | 22 | 24 | 27 | 37 | 35 | 27 | 27 | 31 | 23 |
| Precipitation Potential (%) | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 66 | 73 | 78 | 81 | 84 | 87 | 90 | 90 | 84 | 70 | 59 | 52 | 46 | 40 | 37 | 37 | 35 | 35 | 36 | 40 | 44 | 47 | 54 | 60 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/28 | |||||||||||||||||||||||
| 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) | 23 | 22 | 21 | 20 | 19 | 19 | 18 | 18 | 19 | 21 | 24 | 27 | 29 | 31 | 32 | 32 | 32 | 32 | 32 | 31 | 31 | 29 | 28 | 27 |
| Dewpoint (°C) | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 18 |
| Heat Index (°C) | 24 | 27 | 29 | 31 | 32 | 32 | 32 | 32 | 32 | 31 | 31 | 29 | 28 | 28 | ||||||||||
| Surface Wind (mph) | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 2 | 2 | 3 | 5 | 6 | 6 | 7 | 7 | 7 | 7 |
| Wind Dir | SE | S | S | S | S | SW | W | W | NW | W | W | SW | SW | SW | SW | SW | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 11 | 6 | 4 | 2 | 3 | 4 | 5 | 3 | 1 | 4 | 13 | 25 | 35 | 38 | 36 | 30 | 21 | 18 | 18 | 16 | 20 | 25 | 27 | 28 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 |
| Relative Humidity (%) | 66 | 71 | 76 | 78 | 84 | 84 | 84 | 84 | 81 | 73 | 62 | 54 | 46 | 42 | 39 | 37 | 38 | 39 | 39 | 42 | 43 | 48 | 53 | 58 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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