| Point Forecast: Mc Lean VA 38.95N 77.19W (Elev. 253 ft) |
Last Update: 7:31 am EDT Jul 15, 2025 |
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| Date | 07/15 | 07/16 | ||||||||||||||||||||||
| Hour (EDT) | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 |
| Temperature (°F) | 74 | 75 | 77 | 80 | 83 | 85 | 87 | 88 | 88 | 88 | 87 | 85 | 85 | 83 | 81 | 79 | 78 | 77 | 76 | 76 | 75 | 75 | 75 | 75 |
| Dewpoint (°F) | 73 | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 74 | 75 | 74 | 75 | 75 | 75 | 75 | 75 | 74 | 75 | 74 | 74 | 74 | 74 | 73 |
| Heat Index (°F) | 75 | 77 | 85 | 90 | 94 | 96 | 98 | 98 | 97 | 96 | 93 | 94 | 90 | 87 | 79 | 78 | 77 | 76 | 76 | 75 | 75 | 75 | 75 | |
| Surface Wind (mph) | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 5 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 |
| Wind Dir | N | NW | N | N | NW | NW | W | S | SE | SE | SE | S | S | S | S | S | S | SW | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 69 | 48 | 41 | 53 | 51 | 42 | 41 | 53 | 57 | 65 | 69 | 57 | 56 | 45 | 35 | 49 | 43 | 44 | 47 | 48 | 48 | 39 | 64 | 54 |
| Precipitation Potential (%) | 10 | 6 | 3 | 4 | 5 | 9 | 17 | 30 | 36 | 48 | 54 | 36 | 34 | 15 | 19 | 18 | 18 | 7 | 5 | 6 | 6 | 7 | 9 | 10 |
| Relative Humidity (%) | 97 | 97 | 94 | 85 | 77 | 72 | 68 | 66 | 66 | 63 | 68 | 70 | 72 | 77 | 82 | 88 | 91 | 90 | 97 | 94 | 97 | 97 | 97 | 94 |
| 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) | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 |
| Temperature (°F) | 75 | 78 | 80 | 82 | 84 | 86 | 87 | 88 | 88 | 88 | 87 | 86 | 84 | 83 | 82 | 80 | 79 | 78 | 78 | 78 | 78 | 77 | 77 | 77 |
| Dewpoint (°F) | 74 | 75 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 75 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 74 | 74 | 74 | 74 |
| Heat Index (°F) | 75 | 78 | 86 | 89 | 93 | 96 | 98 | 99 | 99 | 99 | 98 | 96 | 92 | 90 | 89 | 85 | 79 | 78 | 78 | 78 | 78 | 77 | 77 | 77 |
| Surface Wind (mph) | 5 | 6 | 6 | 6 | 7 | 8 | 8 | 9 | 9 | 9 | 9 | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Wind Dir | S | S | SW | SW | SW | SW | S | S | S | S | S | S | S | S | S | S | S | S | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 47 | 53 | 73 | 67 | 61 | 67 | 73 | 79 | 79 | 79 | 79 | 79 | 79 | 73 | 70 | 67 | 64 | 65 | 67 | 68 | 59 | 49 | 40 | 39 |
| Precipitation Potential (%) | 11 | 29 | 29 | 29 | 29 | 29 | 29 | 68 | 68 | 68 | 68 | 68 | 68 | 24 | 24 | 24 | 24 | 24 | 24 | 7 | 7 | 7 | 7 | 7 |
| Relative Humidity (%) | 97 | 91 | 88 | 82 | 77 | 72 | 70 | 68 | 68 | 68 | 70 | 72 | 74 | 77 | 79 | 85 | 88 | 91 | 88 | 88 | 88 | 90 | 90 | 90 |
| 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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