| Point Forecast: Washington-Dulles International Airport VA 38.95N 77.44W (Elev. 285 ft) |
Last Update: 10:30 am EDT Jul 14, 2025 |
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| Date | 07/14 | 07/15 | ||||||||||||||||||||||
| Hour (EDT) | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 |
| Temperature (°F) | 86 | 85 | 84 | 83 | 81 | 78 | 77 | 75 | 75 | 75 | 74 | 73 | 74 | 73 | 73 | 73 | 73 | 75 | 77 | 79 | 81 | 83 | 84 | 85 |
| Dewpoint (°F) | 75 | 75 | 76 | 76 | 75 | 75 | 74 | 74 | 74 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 72 | 73 | 74 | 74 | 75 | 75 | 75 | 75 |
| Heat Index (°F) | 95 | 94 | 93 | 91 | 87 | 78 | 77 | 75 | 75 | 75 | 75 | 77 | 79 | 87 | 90 | 92 | 94 | |||||||
| Surface Wind (mph) | 5 | 5 | 5 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 |
| Wind Dir | SE | SE | S | S | S | N | N | W | SE | NE | S | NW | W | NW | NW | N | NW | N | NE | NE | NE | E | SE | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 74 | 79 | 78 | 84 | 94 | 85 | 85 | 86 | 86 | 72 | 72 | 78 | 72 | 69 | 84 | 86 | 72 | 70 | 62 | 67 | 72 | 74 | 77 | 79 |
| Precipitation Potential (%) | 61 | 65 | 66 | 76 | 90 | 58 | 47 | 25 | 17 | 17 | 17 | 25 | 20 | 17 | 17 | 13 | 13 | 28 | 28 | 28 | 28 | 28 | 28 | 68 |
| Relative Humidity (%) | 70 | 72 | 77 | 80 | 82 | 91 | 90 | 97 | 97 | 94 | 97 | 100 | 93 | 97 | 97 | 97 | 97 | 94 | 90 | 85 | 82 | 77 | 74 | 72 |
| Rain | Lkly | Lkly | Lkly | Ocnl | Ocnl | Lkly | Chc | Chc | SChc | SChc | SChc | Chc | SChc | SChc | SChc | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Lkly |
| Thunder | Lkly | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc |
| Fog | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/16 | |||||||||||||||||||||||
| Hour (EDT) | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 |
| Temperature (°F) | 85 | 85 | 84 | 83 | 82 | 81 | 80 | 78 | 77 | 76 | 75 | 75 | 74 | 74 | 74 | 74 | 75 | 76 | 78 | 81 | 84 | 86 | 87 | 87 |
| Dewpoint (°F) | 75 | 75 | 75 | 74 | 74 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 74 | 73 | 74 | 74 | 74 | 75 | 75 | 75 | 76 | 76 | 76 | 76 |
| Heat Index (°F) | 94 | 94 | 92 | 90 | 88 | 87 | 85 | 78 | 77 | 76 | 75 | 75 | 75 | 76 | 78 | 87 | 93 | 96 | 98 | 98 | ||||
| Surface Wind (mph) | 3 | 5 | 5 | 5 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 5 | 6 | 6 | 7 | 7 |
| 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 (%) | 79 | 79 | 79 | 79 | 79 | 57 | 53 | 49 | 45 | 49 | 53 | 57 | 63 | 68 | 74 | 74 | 74 | 74 | 66 | 59 | 51 | 62 | 73 | 84 |
| Precipitation Potential (%) | 68 | 68 | 68 | 68 | 68 | 23 | 23 | 23 | 23 | 23 | 23 | 11 | 11 | 11 | 11 | 11 | 11 | 27 | 27 | 27 | 27 | 27 | 27 | 75 |
| Relative Humidity (%) | 72 | 72 | 74 | 74 | 77 | 82 | 85 | 91 | 94 | 97 | 97 | 97 | 100 | 97 | 100 | 100 | 97 | 97 | 91 | 82 | 77 | 72 | 70 | 70 |
| Rain | Lkly | Lkly | Lkly | Lkly | Lkly | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Ocnl |
| Thunder | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Lkly |
| Fog | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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