| Point Forecast: Washington DC 38.91N 77.02W (Elev. 72 ft) |
Last Update: 4:53 am EDT Aug 9, 2026 |
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| Date | 08/09 | 08/10 | ||||||||||||||||||||||
| Hour (EDT) | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 |
| Temperature (°F) | 76 | 78 | 80 | 85 | 87 | 88 | 91 | 92 | 92 | 93 | 92 | 91 | 90 | 87 | 84 | 82 | 81 | 80 | 79 | 78 | 77 | 76 | 76 | 75 |
| Dewpoint (°F) | 71 | 72 | 73 | 72 | 72 | 71 | 71 | 70 | 69 | 68 | 68 | 67 | 67 | 67 | 69 | 69 | 69 | 70 | 70 | 70 | 70 | 69 | 69 | 69 |
| Heat Index (°F) | 76 | 78 | 84 | 91 | 94 | 94 | 98 | 98 | 97 | 97 | 96 | 94 | 93 | 90 | 88 | 85 | 84 | 83 | 79 | 78 | 77 | 76 | 76 | 75 |
| Surface Wind (mph) | 2 | 3 | 5 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 3 | 2 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 |
| Wind Dir | SW | W | W | NW | NW | NW | W | W | W | W | W | W | SW | SW | SW | S | SW | W | S | S | SW | SW | NW | NW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 62 | 57 | 54 | 46 | 43 | 43 | 47 | 30 | 30 | 26 | 33 | 29 | 28 | 27 | 23 | 20 | 22 | 20 | 20 | 21 | 22 | 20 | 19 | 21 |
| Precipitation Potential (%) | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 4 | 4 | 3 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 85 | 82 | 79 | 65 | 61 | 57 | 52 | 49 | 47 | 44 | 46 | 45 | 47 | 52 | 61 | 65 | 67 | 72 | 74 | 76 | 79 | 79 | 79 | 82 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/11 | |||||||||||||||||||||||
| Hour (EDT) | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 |
| Temperature (°F) | 74 | 77 | 80 | 86 | 89 | 91 | 92 | 94 | 95 | 95 | 94 | 92 | 90 | 87 | 84 | 83 | 82 | 81 | 80 | 78 | 77 | 77 | 76 | 76 |
| Dewpoint (°F) | 68 | 69 | 70 | 72 | 72 | 72 | 71 | 71 | 71 | 71 | 71 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 72 |
| Heat Index (°F) | 77 | 83 | 92 | 96 | 99 | 99 | 101 | 103 | 103 | 101 | 100 | 97 | 94 | 90 | 88 | 87 | 85 | 84 | 78 | 77 | 77 | 76 | 76 | |
| Surface Wind (mph) | 1 | 1 | 2 | 3 | 5 | 6 | 7 | 8 | 9 | 9 | 9 | 9 | 8 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Wind Dir | NW | NW | W | W | W | W | W | SW | SW | SW | SW | SW | SW | SW | SW | W | W | W | W | W | W | NW | NW | NW |
| Gust | 18 | |||||||||||||||||||||||
| Sky Cover (%) | 25 | 3 | 0 | 7 | 14 | 18 | 21 | 45 | 45 | 45 | 48 | 50 | 67 | 77 | 47 | 49 | 50 | 50 | 50 | 50 | 46 | 41 | 37 | 39 |
| Precipitation Potential (%) | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 4 | 4 | 4 | 4 | 4 |
| Relative Humidity (%) | 82 | 76 | 72 | 63 | 57 | 54 | 51 | 47 | 46 | 46 | 47 | 52 | 56 | 61 | 67 | 70 | 72 | 74 | 77 | 82 | 85 | 85 | 87 | 87 |
| Rain | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- |
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