| Point Forecast: Rockville MD 39.08N 77.16W (Elev. 430 ft) |
Last Update: 4:29 pm EDT Jun 23, 2024 |
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| Date | 06/23 | 06/24 | ||||||||||||||||||||||
| Hour (EDT) | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Temperature (°F) | 94 | 94 | 93 | 91 | 87 | 85 | 83 | 80 | 79 | 78 | 76 | 74 | 73 | 72 | 72 | 74 | 77 | 78 | 80 | 81 | 84 | 84 | 84 | 85 |
| Dewpoint (°F) | 66 | 66 | 66 | 65 | 66 | 67 | 68 | 68 | 68 | 70 | 70 | 69 | 69 | 67 | 65 | 65 | 62 | 62 | 60 | 59 | 57 | 57 | 57 | 57 |
| Heat Index (°F) | 97 | 97 | 96 | 93 | 89 | 88 | 86 | 83 | 79 | 78 | 76 | 77 | 78 | 81 | 81 | 83 | 83 | 83 | 84 | |||||
| Surface Wind (mph) | 14 | 13 | 11 | 8 | 8 | 7 | 6 | 6 | 6 | 6 | 7 | 7 | 8 | 9 | 13 | 13 | 15 | 14 | 15 | 15 | 16 | 16 | 16 | 16 |
| Wind Dir | SW | SW | SW | SW | SW | SW | SW | W | W | W | W | W | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW |
| Gust | 23 | 21 | 18 | 18 | 21 | 22 | 23 | 24 | 25 | 26 | 26 | 26 | 25 | |||||||||||
| Sky Cover (%) | 80 | 74 | 75 | 77 | 75 | 71 | 74 | 70 | 71 | 78 | 73 | 66 | 60 | 43 | 33 | 17 | 9 | 8 | 8 | 9 | 12 | 11 | 14 | 21 |
| Precipitation Potential (%) | 27 | 24 | 37 | 55 | 64 | 27 | 32 | 21 | 12 | 10 | 10 | 10 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 2 | 2 | 1 | 1 | 1 |
| Relative Humidity (%) | 40 | 40 | 41 | 42 | 50 | 55 | 61 | 67 | 69 | 76 | 82 | 84 | 87 | 84 | 79 | 74 | 60 | 58 | 51 | 47 | 40 | 40 | 40 | 39 |
| Rain | Chc | SChc | Chc | Lkly | Lkly | Chc | Chc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | SChc | SChc | Chc | Chc | Chc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/25 | |||||||||||||||||||||||
| Hour (EDT) | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Temperature (°F) | 84 | 84 | 83 | 81 | 77 | 76 | 73 | 70 | 69 | 68 | 67 | 66 | 65 | 66 | 68 | 71 | 75 | 79 | 83 | 86 | 87 | 89 | 90 | 91 |
| Dewpoint (°F) | 57 | 57 | 56 | 57 | 56 | 56 | 57 | 57 | 57 | 56 | 56 | 55 | 56 | 57 | 58 | 59 | 59 | 58 | 57 | 56 | 55 | 54 | 54 | 54 |
| Heat Index (°F) | 83 | 83 | 82 | 81 | 77 | 76 | 75 | 79 | 82 | 85 | 85 | 87 | 88 | 89 | ||||||||||
| Surface Wind (mph) | 16 | 14 | 13 | 11 | 10 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 |
| Wind Dir | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | W | W | W | W | W | W |
| Gust | 23 | 22 | 20 | |||||||||||||||||||||
| Sky Cover (%) | 11 | 6 | 14 | 6 | 11 | 9 | 6 | 5 | 4 | 3 | 3 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 5 | 10 | 13 | 14 | 14 |
| Precipitation Potential (%) | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 40 | 40 | 40 | 44 | 48 | 50 | 57 | 63 | 66 | 65 | 68 | 68 | 73 | 73 | 70 | 66 | 58 | 49 | 41 | 36 | 34 | 30 | 30 | 29 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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