| Point Forecast: Harpers Ferry WV 39.32N 77.73W (Elev. 299 ft) |
Last Update: 7:34 pm EDT May 12, 2024 |
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| Date | 05/12 | 05/13 | ||||||||||||||||||||||
| Hour (EDT) | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| Temperature (°F) | 63 | 61 | 58 | 56 | 54 | 53 | 52 | 50 | 49 | 49 | 47 | 48 | 49 | 53 | 57 | 61 | 65 | 68 | 71 | 73 | 74 | 74 | 74 | 73 |
| Dewpoint (°F) | 45 | 45 | 46 | 46 | 46 | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 45 | 47 | 48 | 49 | 50 | 50 | 50 | 49 | 50 | 49 | 49 | 49 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 3 | 3 | 3 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 6 | 7 | 8 | 9 | 9 | 10 | 10 | 11 | 11 | 13 | 14 |
| Wind Dir | NW | NW | N | NE | E | E | SE | S | S | S | S | S | SE | SE | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 81 | 53 | 24 | 20 | 17 | 19 | 21 | 23 | 23 | 23 | 22 | 19 | 16 | 14 | 11 | 8 | 5 | 8 | 11 | 14 | 16 | 18 | 21 | 24 |
| Precipitation Potential (%) | 3 | 3 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 |
| Relative Humidity (%) | 52 | 56 | 64 | 69 | 74 | 74 | 77 | 83 | 86 | 83 | 89 | 86 | 86 | 80 | 72 | 65 | 58 | 52 | 47 | 43 | 43 | 41 | 41 | 43 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/14 | |||||||||||||||||||||||
| Hour (EDT) | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| Temperature (°F) | 73 | 69 | 67 | 65 | 63 | 62 | 61 | 60 | 59 | 59 | 59 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 66 | 66 | 66 | 66 | 66 |
| Dewpoint (°F) | 49 | 50 | 51 | 51 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 51 | 52 | 54 | 56 | 57 | 58 | 58 | 58 | 58 | 58 | 59 | 59 | 59 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 14 | 14 | 14 | 13 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 |
| Wind Dir | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | 18 | 20 | 20 | 20 | 20 | 20 | 18 | |||||||||||||||||
| Sky Cover (%) | 28 | 32 | 33 | 33 | 34 | 38 | 43 | 47 | 53 | 59 | 65 | 71 | 77 | 83 | 84 | 88 | 92 | 92 | 93 | 93 | 94 | 95 | 96 | 95 |
| Precipitation Potential (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 16 | 16 | 16 | 16 | 16 | 16 | 57 | 57 | 57 | 57 | 57 | 57 | 83 | 83 | 83 | 83 | 83 |
| Relative Humidity (%) | 43 | 51 | 56 | 60 | 62 | 65 | 67 | 69 | 72 | 72 | 72 | 75 | 75 | 78 | 81 | 81 | 81 | 78 | 75 | 75 | 75 | 78 | 78 | 78 |
| Rain | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc |
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