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| Point Forecast: Martinsburg Arpt WV 39.41N 77.97W (Elev. 499 ft) |
Last Update: 7:32 pm EDT May 8, 2021 |
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| Date | 05/08 | 05/09 | ||||||||||||||||||||||
| Hour (EDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°F) | 47 | 45 | 44 | 43 | 42 | 41 | 40 | 40 | 41 | 43 | 45 | 47 | 48 | 50 | 53 | 55 | 57 | 60 | 61 | 62 | 62 | 61 | 59 | 58 |
| Dewpoint (°F) | 32 | 32 | 32 | 33 | 34 | 33 | 33 | 34 | 34 | 34 | 36 | 36 | 37 | 37 | 37 | 38 | 40 | 41 | 41 | 43 | 44 | 45 | 46 | 46 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 8 | 7 | 7 | 7 | 5 | 5 | 3 | 3 | 2 | 2 | 2 | 3 | 5 | 7 | 8 | 10 | 11 | 11 | 13 | 13 | 11 | 9 | 8 | 7 |
| Wind Dir | W | W | W | W | W | W | W | W | W | SW | SW | SW | S | SE | SE | SE | S | S | S | S | S | S | S | S |
| Gust | 20 | 21 | 20 | 21 | 20 | |||||||||||||||||||
| Sky Cover (%) | 0 | 20 | 16 | 45 | 34 | 74 | 100 | 100 | 58 | 100 | 100 | 35 | 97 | 100 | 100 | 95 | 100 | 100 | 99 | 96 | 95 | 97 | 94 | 90 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 3 | 3 | 3 | 9 | 9 | 9 | 42 | 42 | 42 | 42 | 42 | 42 | 51 | 51 | 51 | 51 | 51 | 51 | 51 | 51 |
| Relative Humidity (%) | 56 | 60 | 62 | 67 | 73 | 73 | 76 | 79 | 76 | 70 | 70 | 65 | 65 | 61 | 54 | 53 | 53 | 49 | 48 | 50 | 52 | 56 | 62 | 64 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/10 | |||||||||||||||||||||||
| Hour (EDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°F) | 57 | 57 | 57 | 57 | 58 | 58 | 57 | 55 | 53 | 52 | 51 | 52 | 54 | 56 | 58 | 60 | 61 | 62 | 63 | 63 | 61 | 59 | 57 | 54 |
| Dewpoint (°F) | 47 | 48 | 48 | 48 | 49 | 49 | 49 | 48 | 46 | 45 | 44 | 43 | 43 | 43 | 42 | 41 | 41 | 40 | 39 | 39 | 38 | 37 | 37 | 36 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 7 | 7 | 8 | 8 | 8 | 9 | 10 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 10 | 9 | 8 |
| Wind Dir | S | S | S | SW | SW | W | W | W | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW |
| Gust | 18 | 18 | 18 | 18 | 20 | 21 | 22 | 23 | 25 | 25 | 26 | 26 | 25 | 25 | 23 | 20 | ||||||||
| Sky Cover (%) | 87 | 83 | 80 | 85 | 87 | 88 | 90 | 91 | 88 | 82 | 79 | 77 | 72 | 69 | 61 | 46 | 38 | 35 | 28 | 25 | 25 | 25 | 25 | 28 |
| Precipitation Potential (%) | 51 | 51 | 51 | 51 | 30 | 30 | 30 | 30 | 30 | 30 | 22 | 22 | 22 | 22 | 22 | 22 | 5 | 5 | 5 | 5 | 5 | 5 | 2 | 2 |
| Relative Humidity (%) | 69 | 72 | 72 | 72 | 72 | 72 | 75 | 77 | 77 | 77 | 77 | 71 | 66 | 62 | 55 | 49 | 48 | 44 | 41 | 41 | 42 | 44 | 47 | 50 |
| Rain | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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