| Point Forecast: Tysons Corner VA 38.91N 77.22W (Elev. 449 ft) |
Last Update: 1:31 pm EDT Jul 15, 2025 |
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| Date | 07/15 | 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) | 89 | 89 | 89 | 88 | 86 | 85 | 80 | 79 | 78 | 78 | 77 | 76 | 76 | 75 | 75 | 74 | 74 | 77 | 79 | 82 | 84 | 85 | 87 | 87 |
| Dewpoint (°F) | 74 | 74 | 74 | 74 | 74 | 75 | 75 | 74 | 75 | 75 | 74 | 74 | 74 | 74 | 73 | 73 | 73 | 75 | 76 | 76 | 76 | 76 | 76 | 76 |
| Heat Index (°F) | 98 | 98 | 98 | 97 | 94 | 94 | 85 | 79 | 78 | 78 | 77 | 76 | 76 | 75 | 75 | 77 | 79 | 89 | 93 | 94 | 98 | 98 | ||
| Surface Wind (mph) | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 5 | 6 | 6 | 6 | 7 | 8 | 9 | 10 |
| Wind Dir | S | SE | SE | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 59 | 66 | 69 | 58 | 57 | 53 | 35 | 30 | 38 | 40 | 41 | 57 | 43 | 45 | 52 | 40 | 52 | 62 | 56 | 54 | 74 | 70 | 63 | 58 |
| Precipitation Potential (%) | 39 | 47 | 40 | 32 | 25 | 10 | 5 | 6 | 7 | 7 | 5 | 6 | 5 | 6 | 6 | 6 | 6 | 5 | 8 | 15 | 15 | 22 | 28 | 29 |
| Relative Humidity (%) | 61 | 61 | 61 | 63 | 68 | 72 | 85 | 85 | 91 | 91 | 90 | 94 | 94 | 97 | 94 | 97 | 97 | 94 | 91 | 82 | 77 | 75 | 70 | 70 |
| Rain | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc |
| Thunder | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc |
| Date | 07/17 | |||||||||||||||||||||||
| 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) | 87 | 86 | 85 | 82 | 81 | 80 | 80 | 80 | 79 | 78 | 78 | 77 | 76 | 76 | 76 | 76 | 77 | 79 | 81 | 84 | 87 | 89 | 91 | 92 |
| Dewpoint (°F) | 76 | 76 | 76 | 75 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 73 | 73 | 73 | 73 | 74 | 74 | 75 | 75 | 75 | 75 | 74 | 74 | 74 |
| Heat Index (°F) | 98 | 96 | 94 | 89 | 87 | 85 | 85 | 85 | 79 | 78 | 78 | 77 | 76 | 76 | 76 | 76 | 77 | 79 | 87 | 92 | 96 | 98 | 101 | 102 |
| Surface Wind (mph) | 10 | 10 | 9 | 9 | 8 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 |
| Wind Dir | S | SW | S | S | SW | S | S | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 75 | 77 | 81 | 78 | 76 | 82 | 67 | 66 | 65 | 66 | 68 | 69 | 65 | 61 | 57 | 51 | 46 | 40 | 37 | 35 | 32 | 40 | 49 | 57 |
| Precipitation Potential (%) | 40 | 56 | 66 | 67 | 63 | 20 | 20 | 20 | 20 | 20 | 20 | 4 | 4 | 4 | 4 | 4 | 4 | 8 | 8 | 8 | 8 | 8 | 8 | 35 |
| Relative Humidity (%) | 70 | 72 | 75 | 79 | 82 | 85 | 85 | 85 | 88 | 88 | 88 | 87 | 90 | 90 | 90 | 94 | 90 | 88 | 82 | 74 | 68 | 61 | 58 | 56 |
| Rain | Chc | Lkly | Lkly | Lkly | Lkly | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc |
| Thunder | Chc | Lkly | Lkly | Lkly | Lkly | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc |
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