| Point Forecast: 2 Miles S Washington-Dulles International Airport VA 38.93N 77.45W (Elev. 299 ft) |
Last Update: 7:31 am EDT Jul 15, 2025 |
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| Date | 07/15 | 07/16 | ||||||||||||||||||||||
| Hour (EDT) | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 |
| Temperature (°F) | 75 | 77 | 80 | 82 | 84 | 86 | 87 | 88 | 88 | 86 | 85 | 84 | 82 | 79 | 78 | 77 | 76 | 76 | 75 | 75 | 74 | 74 | 73 | 74 |
| Dewpoint (°F) | 74 | 75 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 73 | 74 |
| Heat Index (°F) | 75 | 77 | 86 | 89 | 93 | 96 | 98 | 99 | 99 | 96 | 94 | 93 | 89 | 79 | 78 | 77 | 76 | 76 | 75 | 75 | ||||
| Surface Wind (mph) | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 5 |
| Wind Dir | N | N | N | N | NW | NW | SE | S | S | S | SE | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 53 | 54 | 45 | 48 | 31 | 28 | 51 | 57 | 68 | 69 | 60 | 61 | 48 | 46 | 44 | 49 | 49 | 53 | 54 | 33 | 34 | 47 | 64 | 57 |
| Precipitation Potential (%) | 5 | 2 | 4 | 4 | 8 | 15 | 26 | 36 | 52 | 54 | 40 | 41 | 17 | 16 | 18 | 15 | 4 | 4 | 3 | 3 | 5 | 6 | 10 | 9 |
| Relative Humidity (%) | 97 | 94 | 88 | 82 | 77 | 72 | 70 | 68 | 68 | 72 | 75 | 77 | 82 | 91 | 94 | 94 | 97 | 97 | 100 | 100 | 100 | 100 | 100 | 100 |
| Rain | -- | -- | -- | -- | -- | SChc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | SChc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/17 | |||||||||||||||||||||||
| Hour (EDT) | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 |
| Temperature (°F) | 76 | 79 | 82 | 84 | 86 | 87 | 88 | 88 | 87 | 86 | 85 | 83 | 81 | 79 | 78 | 77 | 77 | 77 | 77 | 76 | 75 | 75 | 75 | 76 |
| Dewpoint (°F) | 75 | 77 | 78 | 78 | 78 | 78 | 78 | 78 | 77 | 77 | 77 | 77 | 77 | 76 | 76 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 74 | 75 |
| Heat Index (°F) | 76 | 79 | 91 | 95 | 98 | 100 | 102 | 102 | 99 | 97 | 96 | 92 | 88 | 79 | 78 | 77 | 77 | 77 | 77 | 76 | 75 | 75 | 75 | 76 |
| Surface Wind (mph) | 6 | 6 | 7 | 8 | 9 | 9 | 9 | 10 | 10 | 10 | 9 | 8 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Wind Dir | S | SW | SW | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 51 | 74 | 69 | 63 | 69 | 74 | 80 | 80 | 80 | 80 | 80 | 80 | 74 | 72 | 69 | 67 | 67 | 68 | 68 | 61 | 55 | 48 | 45 | 43 |
| Precipitation Potential (%) | 26 | 26 | 26 | 26 | 26 | 26 | 70 | 70 | 70 | 70 | 70 | 70 | 23 | 23 | 23 | 23 | 23 | 23 | 6 | 6 | 6 | 6 | 6 | 6 |
| Relative Humidity (%) | 97 | 94 | 88 | 82 | 77 | 75 | 72 | 72 | 72 | 75 | 77 | 82 | 88 | 91 | 94 | 94 | 94 | 94 | 94 | 97 | 97 | 97 | 97 | 97 |
| Rain | Chc | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- |
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