| Point Forecast: Washington DC 38.89N 77.02W (Elev. 20 ft) |
Last Update: 5:33 pm EDT Jul 16, 2025 |
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| Date | 07/16 | 07/17 | ||||||||||||||||||||||
| Hour (EDT) | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| Temperature (°F) | 87 | 86 | 84 | 80 | 80 | 79 | 78 | 78 | 78 | 78 | 77 | 77 | 76 | 77 | 80 | 83 | 87 | 90 | 92 | 95 | 96 | 97 | 97 | 96 |
| Dewpoint (°F) | 76 | 76 | 76 | 76 | 76 | 75 | 76 | 76 | 75 | 75 | 75 | 75 | 75 | 75 | 76 | 75 | 75 | 75 | 74 | 73 | 73 | 73 | 72 | 72 |
| Heat Index (°F) | 98 | 96 | 93 | 86 | 86 | 79 | 78 | 78 | 78 | 78 | 77 | 77 | 76 | 77 | 86 | 90 | 96 | 101 | 102 | 105 | 106 | 107 | 106 | 105 |
| Surface Wind (mph) | 8 | 8 | 7 | 7 | 7 | 6 | 5 | 5 | 6 | 7 | 7 | 8 | 8 | 9 | 8 | 7 | 8 | 9 | 10 | 10 | 11 | 11 | 11 | 11 |
| Wind Dir | S | S | SW | SW | SW | S | S | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | W | SW |
| Gust | 18 | 20 | 20 | 20 | 18 | |||||||||||||||||||
| Sky Cover (%) | 65 | 68 | 85 | 83 | 78 | 74 | 63 | 60 | 59 | 47 | 56 | 56 | 22 | 19 | 20 | 16 | 11 | 14 | 22 | 18 | 45 | 48 | 40 | 62 |
| Precipitation Potential (%) | 33 | 50 | 44 | 32 | 23 | 9 | 9 | 10 | 8 | 6 | 12 | 5 | 4 | 3 | 2 | 2 | 0 | 0 | 1 | 7 | 12 | 16 | 21 | 25 |
| Relative Humidity (%) | 70 | 72 | 77 | 88 | 88 | 88 | 94 | 94 | 91 | 91 | 94 | 94 | 97 | 94 | 88 | 77 | 68 | 62 | 56 | 49 | 48 | 46 | 45 | 46 |
| Rain | Chc | Chc | Chc | Chc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Chc |
| Thunder | Chc | Chc | Chc | Chc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Chc |
| Date | 07/18 | |||||||||||||||||||||||
| Hour (EDT) | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| Temperature (°F) | 96 | 92 | 90 | 87 | 85 | 83 | 82 | 81 | 80 | 78 | 77 | 77 | 78 | 79 | 80 | 82 | 84 | 86 | 88 | 89 | 89 | 89 | 88 | 87 |
| Dewpoint (°F) | 73 | 74 | 74 | 75 | 75 | 74 | 74 | 73 | 73 | 73 | 72 | 72 | 72 | 73 | 73 | 73 | 72 | 72 | 72 | 71 | 71 | 71 | 72 | 72 |
| Heat Index (°F) | 106 | 102 | 99 | 96 | 94 | 90 | 88 | 86 | 84 | 78 | 77 | 77 | 78 | 79 | 84 | 87 | 90 | 92 | 95 | 95 | 95 | 95 | 95 | 94 |
| Surface Wind (mph) | 11 | 9 | 6 | 6 | 6 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 6 |
| Wind Dir | SW | SW | SW | SW | W | W | W | W | W | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 63 | 51 | 37 | 33 | 42 | 51 | 48 | 45 | 42 | 42 | 41 | 41 | 40 | 38 | 37 | 40 | 44 | 47 | 51 | 56 | 60 | 64 | 67 | 71 |
| Precipitation Potential (%) | 20 | 12 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 37 | 37 | 37 | 37 |
| Relative Humidity (%) | 48 | 56 | 60 | 68 | 72 | 74 | 77 | 77 | 79 | 85 | 85 | 85 | 82 | 82 | 79 | 74 | 67 | 63 | 59 | 56 | 56 | 56 | 59 | 61 |
| Rain | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc |
| Thunder | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc |
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