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| Point Forecast: Rockville MD 39.08N 77.16W (Elev. 430 ft) |
Last Update: 10:31 am EDT Jun 12, 2021 |
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| Date | 06/12 | 06/13 | ||||||||||||||||||||||
| Hour (EDT) | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 |
| Temperature (°F) | 66 | 68 | 70 | 72 | 74 | 75 | 77 | 78 | 77 | 77 | 74 | 72 | 70 | 69 | 68 | 68 | 67 | 67 | 66 | 65 | 65 | 66 | 67 | 71 |
| Dewpoint (°F) | 63 | 64 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 66 | 66 | 65 | 64 | 64 | 64 | 64 | 63 | 63 | 64 | 63 | 63 | 64 | 64 |
| Heat Index (°F) | 75 | 77 | 78 | 77 | 77 | |||||||||||||||||||
| Surface Wind (mph) | 6 | 6 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 2 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 3 | 5 | 6 |
| Wind Dir | NE | NE | NE | NE | NE | NE | E | SE | SE | SE | SE | SE | S | S | S | S | S | S | SE | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 95 | 90 | 86 | 82 | 77 | 74 | 71 | 68 | 64 | 61 | 35 | 16 | 17 | 29 | 41 | 46 | 57 | 52 | 56 | 63 | 54 | 49 | 62 | 51 |
| Precipitation Potential (%) | 12 | 3 | 3 | 3 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 2 | 2 | 2 | 5 | 5 | 5 | 13 | 13 |
| Relative Humidity (%) | 87 | 87 | 84 | 79 | 74 | 71 | 67 | 64 | 67 | 67 | 71 | 79 | 81 | 84 | 84 | 84 | 87 | 90 | 93 | 93 | 90 | 93 | 90 | 81 |
| Rain | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/14 | |||||||||||||||||||||||
| Hour (EDT) | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 |
| Temperature (°F) | 72 | 74 | 77 | 79 | 80 | 82 | 82 | 81 | 80 | 79 | 77 | 75 | 73 | 71 | 70 | 69 | 69 | 68 | 67 | 67 | 67 | 68 | 69 | 71 |
| Dewpoint (°F) | 64 | 65 | 65 | 66 | 66 | 67 | 67 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 65 | 65 | 65 | 66 | 66 | 66 |
| Heat Index (°F) | 76 | 78 | 82 | 83 | 83 | 83 | 82 | 79 | 77 | 75 | ||||||||||||||
| Surface Wind (mph) | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 5 |
| Wind Dir | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | SW | SW | SW | SW | SW | SW | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 62 | 41 | 37 | 38 | 32 | 43 | 47 | 46 | 54 | 60 | 66 | 68 | 72 | 74 | 74 | 73 | 72 | 69 | 64 | 61 | 58 | 53 | 50 | 47 |
| Precipitation Potential (%) | 13 | 6 | 6 | 6 | 28 | 28 | 28 | 47 | 47 | 47 | 90 | 90 | 90 | 77 | 77 | 77 | 32 | 32 | 32 | 25 | 25 | 25 | 14 | 14 |
| Relative Humidity (%) | 73 | 74 | 69 | 64 | 62 | 60 | 60 | 60 | 62 | 67 | 71 | 76 | 76 | 81 | 84 | 87 | 90 | 93 | 93 | 93 | 93 | 97 | 90 | 81 |
| Rain | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- |
| Thunder | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- |
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