| Point Forecast: 3 Miles SSW Ashburn VA 39N 77.49W (Elev. 299 ft) |
Last Update: 1:30 pm EDT Jun 24, 2025 |
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| Date | 06/24 | 06/25 | ||||||||||||||||||||||
| 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 (°F) | 98 | 99 | 97 | 96 | 92 | 88 | 85 | 84 | 82 | 80 | 80 | 78 | 77 | 76 | 76 | 77 | 82 | 86 | 89 | 93 | 94 | 95 | 96 | 96 |
| Dewpoint (°F) | 73 | 73 | 73 | 74 | 75 | 73 | 73 | 72 | 73 | 72 | 72 | 71 | 71 | 71 | 71 | 72 | 74 | 74 | 74 | 74 | 73 | 73 | 73 | 73 |
| Heat Index (°F) | 109 | 110 | 107 | 107 | 103 | 96 | 92 | 90 | 87 | 84 | 84 | 78 | 77 | 76 | 76 | 77 | 88 | 94 | 98 | 103 | 103 | 105 | 106 | 106 |
| Surface Wind (mph) | 6 | 6 | 5 | 5 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 5 | 6 | 6 |
| Wind Dir | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | W | W | W | NW | NW | NW | NW | NW | N | N | N | NW | NW | NW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 15 | 10 | 14 | 17 | 29 | 42 | 28 | 32 | 17 | 19 | 17 | 18 | 29 | 15 | 18 | 12 | 12 | 4 | 11 | 12 | 10 | 17 | 16 | 28 |
| Precipitation Potential (%) | 2 | 3 | 4 | 6 | 3 | 3 | 3 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 2 | 3 | 8 | 5 |
| Relative Humidity (%) | 45 | 44 | 46 | 49 | 58 | 61 | 67 | 67 | 74 | 77 | 77 | 79 | 82 | 85 | 85 | 85 | 77 | 68 | 61 | 54 | 51 | 49 | 48 | 48 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/26 | |||||||||||||||||||||||
| 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 (°F) | 95 | 94 | 93 | 89 | 86 | 83 | 81 | 80 | 79 | 78 | 77 | 76 | 75 | 75 | 76 | 77 | 79 | 82 | 84 | 87 | 89 | 90 | 91 | 91 |
| Dewpoint (°F) | 73 | 74 | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 74 | 74 | 74 | 74 | 75 | 75 | 75 | 76 | 76 | 76 | 75 | 75 | 75 |
| Heat Index (°F) | 105 | 105 | 103 | 99 | 95 | 90 | 87 | 85 | 79 | 78 | 77 | 76 | 75 | 75 | 76 | 77 | 79 | 89 | 93 | 98 | 100 | 101 | 102 | 102 |
| Surface Wind (mph) | 6 | 6 | 6 | 5 | 5 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 5 | 6 | 6 |
| Wind Dir | NW | W | NE | N | N | N | N | N | N | NW | NW | NW | N | N | N | N | N | N | N | N | N | N | NW | N |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 25 | 35 | 32 | 36 | 43 | 32 | 40 | 48 | 47 | 47 | 46 | 45 | 43 | 42 | 38 | 34 | 30 | 29 | 27 | 26 | 31 | 37 | 42 | 49 |
| Precipitation Potential (%) | 10 | 26 | 22 | 19 | 33 | 33 | 33 | 33 | 33 | 33 | 12 | 12 | 12 | 12 | 12 | 12 | 22 | 22 | 22 | 22 | 22 | 22 | 73 | 73 |
| Relative Humidity (%) | 49 | 53 | 54 | 64 | 70 | 77 | 82 | 85 | 88 | 88 | 90 | 94 | 97 | 97 | 94 | 94 | 88 | 79 | 77 | 70 | 66 | 62 | 60 | 60 |
| Rain | -- | Chc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | Lkly | Lkly |
| Thunder | -- | Chc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc |
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