| Point Forecast: Harpers Ferry WV 39.32N 77.73W (Elev. 91 m) |
Last Update: 1:31 pm EDT Jul 15, 2025 |
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| Date | 07/15 | 07/16 | ||||||||||||||||||||||
| Hour (EDT) | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| Temperature (°C) | 31 | 30 | 28 | 26 | 26 | 25 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 26 | 27 | 28 | 29 | 30 | 31 | 29 | 28 | 27 |
| Dewpoint (°C) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Heat Index (°C) | 35 | 34 | 32 | 26 | 26 | 25 | 24 | 24 | 24 | 26 | 31 | 32 | 34 | 36 | 37 | 34 | 33 | 31 | ||||||
| Surface Wind (mph) | 5 | 5 | 6 | 5 | 5 | 5 | 3 | 3 | 5 | 3 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 7 |
| Wind Dir | SE | SE | SE | SE | S | S | S | SE | SE | SE | SE | SE | SE | SE | SE | S | S | S | S | S | S | S | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 57 | 63 | 52 | 42 | 34 | 50 | 56 | 59 | 45 | 46 | 53 | 60 | 67 | 61 | 60 | 53 | 61 | 63 | 59 | 60 | 62 | 85 | 86 | 90 |
| Precipitation Potential (%) | 22 | 17 | 5 | 5 | 3 | 3 | 3 | 2 | 4 | 3 | 2 | 2 | 2 | 2 | 2 | 4 | 3 | 4 | 10 | 26 | 43 | 51 | 79 | 62 |
| Relative Humidity (%) | 65 | 68 | 72 | 82 | 85 | 87 | 90 | 94 | 97 | 93 | 97 | 97 | 93 | 100 | 94 | 88 | 82 | 77 | 77 | 72 | 70 | 75 | 80 | 85 |
| Rain | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Ocnl | Lkly |
| Thunder | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Lkly | Chc |
| Date | 07/17 | |||||||||||||||||||||||
| Hour (EDT) | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| Temperature (°C) | 27 | 27 | 26 | 25 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 24 | 25 | 26 | 28 | 29 | 31 | 32 | 32 | 33 | 33 | 32 |
| Dewpoint (°C) | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 23 | 23 | 23 | 23 | 23 |
| Heat Index (°C) | 31 | 29 | 26 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 26 | 31 | 34 | 35 | 37 | 37 | 38 | 38 | 37 | |||||
| Surface Wind (mph) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Wind Dir | S | S | S | S | S | S | S | S | S | S | SW | SW | SW | SW | SW | SW | SW | W | W | W | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 69 | 76 | 79 | 74 | 74 | 74 | 73 | 71 | 70 | 67 | 63 | 60 | 53 | 47 | 40 | 40 | 39 | 39 | 44 | 48 | 53 | 53 | 53 | 53 |
| Precipitation Potential (%) | 44 | 39 | 29 | 29 | 29 | 29 | 29 | 29 | 8 | 8 | 8 | 8 | 8 | 8 | 10 | 10 | 10 | 10 | 10 | 10 | 29 | 29 | 29 | 29 |
| Relative Humidity (%) | 82 | 82 | 88 | 90 | 94 | 90 | 94 | 94 | 97 | 97 | 93 | 93 | 97 | 94 | 90 | 85 | 77 | 72 | 65 | 61 | 60 | 56 | 56 | 58 |
| Rain | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc |
| Thunder | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc |
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