| Point Forecast: Reston VA 38.95N 77.36W (Elev. 446 ft) |
Last Update: 5:55 am EDT Jul 14, 2025 |
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| Date | 07/14 | 07/15 | ||||||||||||||||||||||
| Hour (EDT) | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 |
| Temperature (°F) | 73 | 73 | 76 | 78 | 80 | 83 | 85 | 86 | 87 | 86 | 85 | 83 | 83 | 81 | 78 | 77 | 75 | 75 | 75 | 74 | 74 | 74 | 73 | 73 |
| Dewpoint (°F) | 73 | 73 | 74 | 75 | 75 | 75 | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 73 | 73 | 73 | 73 | 73 | 72 | 72 | 72 |
| Heat Index (°F) | 76 | 78 | 85 | 90 | 93 | 95 | 96 | 95 | 94 | 90 | 90 | 87 | 78 | 77 | 75 | 75 | 75 | |||||||
| Surface Wind (mph) | 2 | 2 | 2 | 2 | 2 | 3 | 5 | 5 | 6 | 5 | 5 | 5 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Wind Dir | SE | SE | S | S | S | S | S | S | S | SE | SE | SE | S | S | N | N | NW | SE | NE | S | NW | W | NW | NW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 68 | 62 | 58 | 45 | 46 | 38 | 53 | 60 | 66 | 76 | 78 | 79 | 83 | 94 | 85 | 85 | 86 | 85 | 74 | 80 | 67 | 68 | 71 | 83 |
| Precipitation Potential (%) | 15 | 13 | 9 | 6 | 11 | 20 | 30 | 40 | 49 | 63 | 66 | 68 | 74 | 90 | 59 | 51 | 29 | 18 | 19 | 18 | 26 | 21 | 19 | 18 |
| Relative Humidity (%) | 100 | 100 | 94 | 91 | 85 | 77 | 70 | 70 | 68 | 70 | 72 | 77 | 77 | 82 | 88 | 90 | 94 | 94 | 94 | 97 | 97 | 93 | 97 | 97 |
| Rain | SChc | -- | -- | -- | -- | SChc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Ocnl | Lkly | Chc | Chc | SChc | SChc | SChc | Chc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | SChc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- |
| Date | 07/16 | |||||||||||||||||||||||
| Hour (EDT) | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 |
| Temperature (°F) | 72 | 73 | 75 | 76 | 78 | 81 | 83 | 84 | 85 | 85 | 85 | 84 | 83 | 82 | 81 | 80 | 79 | 78 | 77 | 77 | 76 | 75 | 74 | 74 |
| Dewpoint (°F) | 72 | 72 | 73 | 74 | 73 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 75 | 74 | 74 | 74 | 73 | 73 | 73 |
| Heat Index (°F) | 75 | 76 | 78 | 86 | 90 | 91 | 93 | 93 | 93 | 91 | 90 | 88 | 86 | 84 | 79 | 78 | 77 | 77 | 76 | 75 | ||||
| Surface Wind (mph) | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 |
| Wind Dir | N | NW | N | N | NE | NE | E | SE | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 76 | 64 | 68 | 61 | 67 | 72 | 74 | 77 | 79 | 79 | 79 | 79 | 79 | 79 | 59 | 54 | 50 | 45 | 49 | 52 | 56 | 61 | 65 | 70 |
| Precipitation Potential (%) | 14 | 14 | 28 | 28 | 28 | 28 | 28 | 28 | 68 | 68 | 68 | 68 | 68 | 68 | 23 | 23 | 23 | 23 | 23 | 23 | 12 | 12 | 12 | 12 |
| Relative Humidity (%) | 100 | 97 | 94 | 94 | 85 | 79 | 74 | 72 | 70 | 70 | 70 | 72 | 74 | 77 | 79 | 82 | 85 | 91 | 90 | 90 | 94 | 94 | 97 | 97 |
| Rain | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- |
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