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| Point Forecast: Martinsburg Arpt WV 39.41N 77.97W (Elev. 499 ft) |
Last Update: 1:32 am EDT Jun 19, 2021 |
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| Date | 06/19 | 06/20 | ||||||||||||||||||||||
| Hour (EDT) | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 |
| Temperature (°F) | 69 | 68 | 68 | 67 | 71 | 74 | 78 | 82 | 84 | 84 | 83 | 82 | 82 | 83 | 82 | 81 | 79 | 76 | 74 | 72 | 71 | 70 | 70 | 69 |
| Dewpoint (°F) | 60 | 61 | 61 | 61 | 63 | 64 | 65 | 65 | 65 | 64 | 64 | 64 | 64 | 63 | 64 | 64 | 64 | 65 | 65 | 65 | 65 | 65 | 64 | 64 |
| Heat Index (°F) | 78 | 84 | 86 | 85 | 84 | 83 | 83 | 84 | 83 | 83 | 79 | 76 | ||||||||||||
| Surface Wind (mph) | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 10 | 11 | 13 | 13 | 13 | 11 | 11 | 10 | 9 | 8 | 8 | 7 | 7 | 7 | 6 | 5 | 3 |
| Wind Dir | SW | SW | W | SW | SW | SW | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W |
| Gust | 18 | |||||||||||||||||||||||
| Sky Cover (%) | 88 | 85 | 83 | 81 | 80 | 79 | 80 | 82 | 83 | 83 | 83 | 83 | 82 | 82 | 81 | 69 | 57 | 46 | 48 | 51 | 53 | 56 | 58 | 61 |
| Precipitation Potential (%) | 16 | 16 | 16 | 16 | 16 | 14 | 14 | 14 | 14 | 40 | 40 | 60 | 60 | 33 | 33 | 36 | 36 | 45 | 45 | 45 | 45 | 45 | 45 | 31 |
| Relative Humidity (%) | 73 | 78 | 78 | 81 | 76 | 71 | 64 | 56 | 53 | 51 | 53 | 55 | 55 | 51 | 55 | 56 | 60 | 69 | 74 | 79 | 81 | 84 | 81 | 84 |
| Rain | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | Chc | Chc | Lkly | Lkly | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc |
| Fog | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/21 | |||||||||||||||||||||||
| Hour (EDT) | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 |
| Temperature (°F) | 68 | 68 | 67 | 67 | 68 | 71 | 74 | 78 | 81 | 83 | 85 | 86 | 87 | 87 | 87 | 86 | 84 | 82 | 80 | 77 | 75 | 73 | 72 | 71 |
| Dewpoint (°F) | 64 | 64 | 63 | 64 | 64 | 66 | 67 | 67 | 67 | 67 | 66 | 66 | 66 | 66 | 66 | 67 | 67 | 68 | 68 | 67 | 67 | 67 | 66 | 66 |
| Heat Index (°F) | 78 | 83 | 86 | 87 | 88 | 89 | 89 | 89 | 89 | 87 | 85 | 83 | 77 | 75 | ||||||||||
| Surface Wind (mph) | 3 | 5 | 5 | 5 | 3 | 5 | 6 | 7 | 8 | 9 | 9 | 9 | 8 | 7 | 7 | 6 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 |
| Wind Dir | W | W | W | W | SW | SW | SW | SW | W | W | W | W | W | SW | SW | SW | SW | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 65 | 67 | 49 | 68 | 44 | 44 | 45 | 46 | 46 | 46 | 46 | 46 | 45 | 43 | 42 | 44 | 48 | 50 | 49 | 46 | 44 | 44 | 45 | 45 |
| Precipitation Potential (%) | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 33 | 33 | 33 | 33 | 33 | 33 | 17 | 17 | 17 | 17 | 17 | 17 | 13 |
| Relative Humidity (%) | 87 | 87 | 87 | 90 | 87 | 84 | 79 | 69 | 63 | 59 | 53 | 51 | 50 | 50 | 50 | 53 | 57 | 63 | 67 | 71 | 76 | 81 | 81 | 84 |
| Rain | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | SChc | SChc | SChc | -- |
| Thunder | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | SChc | SChc | SChc | -- |
| Fog | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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