| Point Forecast: Ashburn VA 39.05N 77.49W (Elev. 91 m) |
Last Update: 1:29 am EDT Jun 26, 2024 |
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| Date | 06/26 | 06/27 | ||||||||||||||||||||||
| Hour (EDT) | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 |
| Temperature (°C) | 24 | 24 | 24 | 23 | 23 | 24 | 26 | 28 | 30 | 32 | 33 | 34 | 34 | 35 | 33 | 32 | 32 | 30 | 28 | 26 | 25 | 24 | 24 | 23 |
| Dewpoint (°C) | 17 | 17 | 16 | 17 | 17 | 17 | 19 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 |
| Heat Index (°C) | 24 | 24 | 24 | 24 | 26 | 30 | 32 | 34 | 37 | 37 | 37 | 38 | 37 | 36 | 34 | 33 | 31 | 26 | 25 | 24 | 24 | |||
| Surface Wind (mph) | 7 | 6 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 7 | 8 | 7 | 8 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 9 | 9 | 8 | 7 |
| Wind Dir | S | S | S | S | SW | SW | SW | SW | W | W | W | W | SW | SW | SW | SW | SW | SW | S | SW | SW | W | SW | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 27 | 28 | 28 | 29 | 33 | 37 | 30 | 28 | 31 | 16 | 33 | 31 | 46 | 42 | 44 | 54 | 52 | 48 | 62 | 73 | 74 | 91 | 89 | 91 |
| Precipitation Potential (%) | 6 | 6 | 6 | 7 | 7 | 7 | 6 | 6 | 6 | 16 | 16 | 16 | 55 | 55 | 55 | 62 | 62 | 62 | 59 | 59 | 59 | 59 | 59 | 59 |
| Relative Humidity (%) | 62 | 62 | 62 | 66 | 66 | 66 | 69 | 61 | 57 | 54 | 49 | 47 | 44 | 43 | 49 | 54 | 54 | 61 | 70 | 79 | 85 | 85 | 87 | 93 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Chc | Chc | Chc |
| Date | 06/28 | |||||||||||||||||||||||
| Hour (EDT) | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 |
| Temperature (°C) | 23 | 22 | 22 | 22 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 29 | 30 | 30 | 29 | 29 | 28 | 26 | 24 | 23 | 22 | 22 |
| Dewpoint (°C) | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 19 | 19 | 19 | 18 | 18 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 |
| Heat Index (°C) | 24 | 25 | 26 | 28 | 29 | 30 | 30 | 31 | 31 | 30 | 29 | 28 | 26 | 24 | ||||||||||
| Surface Wind (mph) | 6 | 6 | 6 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 6 | 5 | 5 | 5 | 5 |
| Wind Dir | W | W | W | NW | NW | NW | NW | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 84 | 86 | 86 | 78 | 67 | 62 | 73 | 63 | 52 | 40 | 36 | 28 | 24 | 21 | 15 | 12 | 10 | 7 | 5 | 8 | 13 | 16 | 18 | 21 |
| Precipitation Potential (%) | 28 | 28 | 28 | 28 | 28 | 28 | 8 | 8 | 8 | 8 | 8 | 8 | 5 | 5 | 5 | 5 | 5 | 5 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 93 | 97 | 93 | 97 | 97 | 93 | 87 | 82 | 74 | 67 | 60 | 57 | 53 | 50 | 46 | 46 | 48 | 51 | 55 | 60 | 66 | 73 | 76 | 79 |
| Rain | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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