| Point Forecast: Washington-Dulles International Airport VA 38.95N 77.44W (Elev. 87 m) |
Last Update: 1:29 pm EDT Jun 16, 2024 |
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| Date | 06/16 | 06/17 | ||||||||||||||||||||||
| Hour (EDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°C) | 31 | 32 | 31 | 30 | 28 | 26 | 25 | 24 | 23 | 22 | 21 | 21 | 20 | 20 | 19 | 20 | 22 | 24 | 27 | 28 | 31 | 32 | 33 | 33 |
| Dewpoint (°C) | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 16 | 15 | 15 | 15 | 16 | 16 | 15 | 16 | 17 | 17 | 18 | 18 | 19 | 19 |
| Heat Index (°C) | 31 | 32 | 31 | 30 | 28 | 26 | 25 | 24 | 24 | 27 | 29 | 31 | 33 | 34 | 35 | |||||||||
| Surface Wind (mph) | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Wind Dir | S | S | S | SE | SE | SE | SE | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 45 | 41 | 27 | 28 | 20 | 13 | 9 | 14 | 10 | 15 | 21 | 19 | 14 | 22 | 15 | 9 | 12 | 15 | 12 | 8 | 10 | 12 | 17 | 23 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 |
| Relative Humidity (%) | 38 | 38 | 39 | 42 | 49 | 52 | 58 | 60 | 62 | 66 | 71 | 70 | 73 | 73 | 78 | 76 | 64 | 60 | 54 | 51 | 46 | 45 | 44 | 43 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/18 | |||||||||||||||||||||||
| Hour (EDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°C) | 33 | 33 | 33 | 33 | 31 | 29 | 28 | 26 | 24 | 23 | 22 | 22 | 21 | 21 | 21 | 22 | 23 | 25 | 28 | 30 | 32 | 33 | 34 | 34 |
| Dewpoint (°C) | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 19 | 19 | 20 | 21 | 21 | 21 | 21 | 20 |
| Heat Index (°C) | 35 | 36 | 35 | 34 | 32 | 31 | 29 | 26 | 24 | 25 | 29 | 32 | 34 | 36 | 37 | 37 | ||||||||
| Surface Wind (mph) | 10 | 10 | 9 | 9 | 9 | 8 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 8 | 8 |
| Wind Dir | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 14 | 22 | 19 | 18 | 15 | 17 | 19 | 20 | 20 | 19 | 18 | 16 | 13 | 11 | 13 | 17 | 19 | 16 | 11 | 8 | 11 | 18 | 21 | 22 |
| Precipitation Potential (%) | 2 | 3 | 3 | 3 | 4 | 4 | 4 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 3 |
| Relative Humidity (%) | 43 | 44 | 43 | 45 | 50 | 51 | 56 | 64 | 66 | 71 | 73 | 76 | 76 | 78 | 84 | 81 | 76 | 71 | 63 | 57 | 52 | 49 | 46 | 43 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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