| Point Forecast: Green Haven MD 39.13N 76.52W (Elev. 26 m) |
Last Update: 3:09 pm EDT Jul 21, 2026 |
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| Date | 07/21 | 07/22 | ||||||||||||||||||||||
| Hour (EDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°C) | 32 | 29 | 28 | 26 | 28 | 24 | 23 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 23 | 24 | 26 | 28 | 29 | 30 | 31 | 31 | 32 |
| Dewpoint (°C) | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 20 | 19 |
| Heat Index (°C) | 36 | 32 | 31 | 26 | 30 | 24 | 24 | 24 | 26 | 30 | 31 | 32 | 33 | 33 | 33 | |||||||||
| Surface Wind (mph) | 13 | 14 | 14 | 15 | 17 | 14 | 11 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 10 | 9 | 9 | 10 | 13 | 14 | 14 | 13 | 13 | 13 |
| Wind Dir | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | W | W | W | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 84 | 98 | 96 | 94 | 92 | 93 | 94 | 95 | 92 | 88 | 85 | 80 | 75 | 70 | 65 | 61 | 56 | 52 | 47 | 43 | 47 | 51 | 67 | 67 |
| Precipitation Potential (%) | 60 | 80 | 80 | 80 | 81 | 81 | 81 | 65 | 65 | 65 | 58 | 58 | 58 | 17 | 17 | 17 | 2 | 2 | 2 | 20 | 20 | 20 | 50 | 50 |
| Relative Humidity (%) | 59 | 70 | 72 | 77 | 69 | 85 | 90 | 84 | 87 | 90 | 87 | 90 | 90 | 90 | 93 | 90 | 85 | 79 | 69 | 63 | 57 | 55 | 52 | 48 |
| Rain | Lkly | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | SChc | SChc | SChc | -- | -- | -- | SChc | SChc | SChc | Chc | Chc |
| Thunder | Chc | Lkly | Lkly | Lkly | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc |
| Date | 07/23 | |||||||||||||||||||||||
| Hour (EDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°C) | 31 | 31 | 30 | 29 | 27 | 26 | 24 | 23 | 23 | 22 | 21 | 21 | 20 | 19 | 19 | 19 | 20 | 21 | 22 | 24 | 25 | 26 | 27 | 28 |
| Dewpoint (°C) | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 17 | 16 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 14 | 14 | 14 | 14 | 14 |
| Heat Index (°C) | 32 | 32 | 32 | 30 | 28 | 26 | 24 | 24 | 25 | 26 | 27 | 28 | ||||||||||||
| Surface Wind (mph) | 13 | 13 | 11 | 10 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 10 | 9 | 9 | 8 |
| Wind Dir | W | W | W | W | W | W | NW | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | NE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 67 | 67 | 67 | 67 | 60 | 62 | 65 | 67 | 67 | 66 | 66 | 66 | 66 | 66 | 56 | 47 | 37 | 30 | 22 | 15 | 15 | 14 | 14 | 10 |
| Precipitation Potential (%) | 50 | 50 | 50 | 50 | 22 | 23 | 8 | 4 | 1 | 0 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 52 | 52 | 53 | 55 | 60 | 67 | 69 | 71 | 68 | 66 | 66 | 66 | 68 | 70 | 73 | 70 | 68 | 68 | 64 | 55 | 52 | 47 | 44 | 43 |
| Rain | Chc | Chc | Chc | Chc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | SChc | Chc | Chc | Chc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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