| Point Forecast: Reston VA 38.95N 77.36W (Elev. 446 ft) |
Last Update: 1:31 am EDT May 11, 2024 |
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| Date | 05/11 | 05/12 | ||||||||||||||||||||||
| 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 (°F) | 48 | 48 | 47 | 47 | 47 | 48 | 50 | 52 | 57 | 59 | 61 | 63 | 64 | 65 | 65 | 65 | 64 | 61 | 58 | 56 | 56 | 55 | 55 | 54 |
| Dewpoint (°F) | 45 | 46 | 45 | 45 | 44 | 45 | 46 | 45 | 45 | 44 | 44 | 44 | 44 | 44 | 44 | 45 | 46 | 48 | 49 | 49 | 49 | 49 | 49 | 49 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 5 | 6 | 6 | 7 | 8 | 8 | 7 | 6 | 6 | 6 | 7 | 6 | 7 |
| Wind Dir | NE | N | N | N | N | N | N | SW | S | S | S | S | S | S | S | S | S | S | S | SE | SE | SE | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 65 | 67 | 58 | 44 | 49 | 54 | 56 | 47 | 39 | 35 | 46 | 46 | 41 | 29 | 31 | 44 | 62 | 82 | 80 | 78 | 68 | 63 | 65 | 74 |
| Precipitation Potential (%) | 12 | 12 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 7 | 7 | 85 | 85 | 85 | 79 | 79 | 79 | 66 | 66 | 66 |
| Relative Humidity (%) | 89 | 93 | 93 | 93 | 89 | 89 | 86 | 77 | 64 | 57 | 53 | 50 | 48 | 46 | 46 | 48 | 52 | 62 | 72 | 77 | 77 | 80 | 80 | 83 |
| Rain | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Lkly | Lkly | Lkly |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- |
| Date | 05/13 | |||||||||||||||||||||||
| 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 (°F) | 53 | 52 | 52 | 51 | 52 | 52 | 54 | 57 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 66 | 65 | 64 | 63 | 59 | 58 | 56 | 54 | 53 |
| Dewpoint (°F) | 49 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 49 | 47 | 46 | 45 | 45 | 45 | 45 | 46 | 47 | 47 | 48 | 48 | 48 | 48 | 48 | 48 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 8 | 10 | 11 | 11 | 11 | 13 | 11 | 11 | 10 | 9 | 7 | 6 | 6 | 5 | 5 | 5 | 3 |
| Wind Dir | S | S | SW | SW | SW | W | W | W | NW | NW | NW | NW | NW | NW | NW | NW | NW | N | N | N | NW | NW | NW | SW |
| Gust | 18 | 18 | ||||||||||||||||||||||
| Sky Cover (%) | 80 | 78 | 78 | 71 | 59 | 46 | 41 | 54 | 60 | 66 | 66 | 66 | 66 | 58 | 50 | 42 | 37 | 31 | 25 | 23 | 21 | 18 | 21 | 24 |
| Precipitation Potential (%) | 32 | 32 | 32 | 10 | 10 | 10 | 21 | 21 | 21 | 21 | 21 | 21 | 26 | 26 | 26 | 26 | 26 | 26 | 2 | 2 | 2 | 2 | 2 | 2 |
| Relative Humidity (%) | 86 | 93 | 93 | 96 | 93 | 93 | 86 | 77 | 67 | 60 | 56 | 52 | 50 | 48 | 47 | 48 | 52 | 54 | 58 | 67 | 69 | 74 | 80 | 83 |
| Rain | Chc | Chc | Chc | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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