| Point Forecast: Rockville MD 39.08N 77.16W (Elev. 430 ft) |
Last Update: 10:31 pm EDT May 11, 2024 |
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| Date | 05/11 | 05/12 | ||||||||||||||||||||||
| Hour (EDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 54 | 53 | 53 | 51 | 51 | 50 | 49 | 50 | 50 | 52 | 55 | 58 | 59 | 61 | 62 | 62 | 63 | 63 | 64 | 65 | 63 | 62 | 58 | 55 |
| Dewpoint (°F) | 49 | 49 | 50 | 50 | 50 | 49 | 49 | 49 | 49 | 50 | 50 | 49 | 48 | 47 | 46 | 47 | 47 | 47 | 47 | 47 | 47 | 49 | 49 | 49 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 8 | 9 | 10 | 11 | 11 | 11 | 11 | 10 | 10 | 8 | 6 | 5 | 5 | 5 |
| Wind Dir | SE | S | S | S | S | SW | SW | W | W | W | W | NW | NW | NW | NW | NW | NW | NW | N | N | NE | NE | NE | E |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 82 | 81 | 79 | 77 | 76 | 76 | 75 | 68 | 61 | 54 | 56 | 57 | 58 | 58 | 58 | 58 | 53 | 48 | 43 | 39 | 35 | 32 | 27 | 23 |
| Precipitation Potential (%) | 65 | 70 | 45 | 32 | 32 | 32 | 18 | 18 | 18 | 13 | 13 | 13 | 36 | 36 | 36 | 23 | 23 | 23 | 15 | 15 | 15 | 3 | 3 | 3 |
| Relative Humidity (%) | 83 | 86 | 89 | 96 | 96 | 96 | 100 | 96 | 96 | 93 | 83 | 72 | 67 | 60 | 56 | 58 | 56 | 56 | 54 | 52 | 56 | 62 | 72 | 80 |
| Rain | Lkly | Lkly | Chc | Chc | Chc | Chc | SChc | SChc | Chc | -- | -- | -- | Chc | Chc | Chc | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- |
| Thunder | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/13 | |||||||||||||||||||||||
| Hour (EDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 54 | 53 | 52 | 51 | 50 | 50 | 50 | 50 | 51 | 53 | 57 | 61 | 65 | 68 | 71 | 73 | 74 | 75 | 75 | 75 | 74 | 72 | 69 | 67 |
| Dewpoint (°F) | 49 | 49 | 48 | 48 | 48 | 49 | 49 | 49 | 50 | 50 | 50 | 51 | 51 | 51 | 51 | 51 | 51 | 51 | 51 | 51 | 52 | 52 | 52 | 53 |
| Heat Index (°F) | 75 | 75 | 75 | |||||||||||||||||||||
| Surface Wind (mph) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 |
| Wind Dir | E | E | SE | SE | SE | SE | SE | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 19 | 22 | 25 | 29 | 34 | 39 | 44 | 46 | 47 | 49 | 41 | 33 | 24 | 26 | 28 | 30 | 29 | 28 | 27 | 32 | 38 | 44 | 43 | 43 |
| Precipitation Potential (%) | 3 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 | 3 | 3 | 3 | 3 | 10 | 10 | 10 |
| Relative Humidity (%) | 83 | 86 | 86 | 89 | 93 | 96 | 96 | 96 | 96 | 89 | 77 | 70 | 60 | 54 | 49 | 46 | 44 | 43 | 43 | 43 | 46 | 49 | 55 | 61 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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