| Point Forecast: Washington DC 38.89N 77.02W (Elev. 20 ft) |
Last Update: 10:53 pm EDT Aug 8, 2026 |
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| Date | 08/09 | |||||||||||||||||||||||
| Hour (EDT) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°F) | 81 | 80 | 79 | 78 | 77 | 77 | 77 | 76 | 78 | 80 | 85 | 87 | 88 | 91 | 92 | 92 | 93 | 92 | 91 | 91 | 87 | 84 | 82 | 81 |
| Dewpoint (°F) | 72 | 72 | 72 | 72 | 72 | 72 | 72 | 71 | 72 | 73 | 72 | 72 | 71 | 70 | 69 | 69 | 68 | 67 | 67 | 68 | 68 | 69 | 69 | 69 |
| Heat Index (°F) | 85 | 84 | 79 | 78 | 77 | 77 | 77 | 76 | 78 | 84 | 91 | 94 | 94 | 97 | 97 | 97 | 97 | 96 | 94 | 95 | 91 | 88 | 85 | 84 |
| Surface Wind (mph) | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 5 | 6 | 7 | 7 | 6 | 7 | 7 | 7 | 6 | 5 | 3 | 2 | 1 | 1 | 0 |
| Wind Dir | SW | S | SW | SW | SW | SW | SW | SW | W | W | W | NW | NW | W | W | W | W | W | W | SW | SW | SW | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 20 | 17 | 40 | 46 | 56 | 47 | 58 | 59 | 57 | 55 | 47 | 44 | 45 | 56 | 30 | 30 | 23 | 34 | 30 | 29 | 28 | 23 | 20 | 22 |
| Precipitation Potential (%) | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 4 | 4 | 3 | 3 | 2 | 1 | 0 | 0 |
| Relative Humidity (%) | 74 | 77 | 79 | 82 | 85 | 85 | 85 | 85 | 82 | 79 | 65 | 61 | 57 | 50 | 47 | 47 | 44 | 44 | 45 | 47 | 53 | 61 | 65 | 67 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/10 | |||||||||||||||||||||||
| Hour (EDT) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°F) | 80 | 79 | 78 | 77 | 77 | 76 | 75 | 76 | 77 | 81 | 86 | 89 | 91 | 93 | 94 | 95 | 95 | 94 | 92 | 90 | 88 | 86 | 85 | 83 |
| Dewpoint (°F) | 70 | 70 | 70 | 69 | 69 | 69 | 69 | 69 | 69 | 70 | 70 | 70 | 70 | 69 | 69 | 69 | 69 | 69 | 69 | 69 | 69 | 69 | 70 | 70 |
| Heat Index (°F) | 83 | 79 | 78 | 77 | 77 | 76 | 75 | 76 | 77 | 85 | 91 | 94 | 97 | 98 | 99 | 101 | 101 | 99 | 97 | 95 | 92 | 90 | 90 | 87 |
| Surface Wind (mph) | 0 | 0 | 0 | 0 | 0 | 2 | 1 | 1 | 1 | 1 | 2 | 3 | 5 | 6 | 7 | 8 | 8 | 8 | 7 | 6 | 5 | 5 | 3 | 3 |
| Wind Dir | S | S | S | S | S | NW | S | SW | NW | W | W | W | W | W | SW | SW | SW | SW | SW | SW | SW | SW | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 20 | 21 | 21 | 23 | 20 | 20 | 21 | 26 | 4 | 0 | 7 | 14 | 17 | 20 | 43 | 43 | 43 | 44 | 43 | 41 | 40 | 41 | 43 | 44 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 22 | 22 | 22 | 22 | 22 | 22 | 18 | 18 | 18 | 18 |
| Relative Humidity (%) | 72 | 74 | 76 | 76 | 76 | 79 | 82 | 79 | 76 | 69 | 59 | 54 | 50 | 46 | 44 | 43 | 43 | 44 | 47 | 50 | 54 | 57 | 61 | 65 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- | SChc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- | SChc | SChc | SChc | -- |
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