| Point Forecast: Washington DC 38.89N 77.02W (Elev. 20 ft) |
Last Update: 2:22 pm EDT Jul 19, 2026 |
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| Date | 07/19 | 07/20 | ||||||||||||||||||||||
| Hour (EDT) | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 |
| Temperature (°F) | 87 | 87 | 85 | 85 | 84 | 81 | 78 | 76 | 74 | 73 | 72 | 72 | 70 | 70 | 70 | 68 | 70 | 71 | 74 | 77 | 79 | 81 | 82 | 83 |
| Dewpoint (°F) | 66 | 64 | 63 | 63 | 62 | 65 | 64 | 64 | 64 | 64 | 64 | 63 | 63 | 63 | 62 | 62 | 63 | 63 | 64 | 63 | 63 | 64 | 64 | 64 |
| Heat Index (°F) | 89 | 88 | 86 | 86 | 85 | 83 | 78 | 76 | 77 | 79 | 83 | 83 | 84 | |||||||||||
| Surface Wind (mph) | 9 | 9 | 9 | 8 | 6 | 3 | 2 | 2 | 2 | 1 | 1 | 0 | 0 | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 5 | 5 | 5 | 5 |
| Wind Dir | NW | N | N | N | N | N | N | N | NE | NE | NE | NE | NE | NE | NE | NE | NE | NE | NE | E | E | E | SE | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 46 | 50 | 54 | 46 | 39 | 31 | 36 | 41 | 46 | 46 | 45 | 45 | 45 | 44 | 44 | 43 | 43 | 42 | 39 | 37 | 34 | 35 | 37 | 38 |
| Precipitation Potential (%) | 12 | 12 | 12 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 12 | 12 | 22 |
| Relative Humidity (%) | 50 | 46 | 48 | 48 | 48 | 58 | 62 | 66 | 71 | 73 | 76 | 73 | 78 | 78 | 76 | 81 | 78 | 76 | 71 | 62 | 58 | 56 | 55 | 53 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/21 | |||||||||||||||||||||||
| Hour (EDT) | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 |
| Temperature (°F) | 84 | 84 | 85 | 83 | 83 | 81 | 77 | 76 | 75 | 74 | 74 | 73 | 73 | 72 | 72 | 72 | 71 | 73 | 76 | 78 | 80 | 82 | 84 | 86 |
| Dewpoint (°F) | 65 | 65 | 66 | 66 | 67 | 66 | 67 | 68 | 68 | 69 | 70 | 70 | 71 | 71 | 72 | 72 | 71 | 73 | 75 | 76 | 76 | 76 | 76 | 76 |
| Heat Index (°F) | 86 | 86 | 87 | 85 | 86 | 83 | 77 | 76 | 75 | 76 | 78 | 86 | 89 | 93 | 96 | |||||||||
| Surface Wind (mph) | 6 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 6 | 7 | 7 | 8 | 9 | 10 |
| Wind Dir | S | S | S | S | S | S | S | SE | SE | S | S | S | S | SE | SE | S | S | S | S | S | S | S | SW | SW |
| Gust | 18 | |||||||||||||||||||||||
| Sky Cover (%) | 42 | 45 | 49 | 50 | 50 | 51 | 56 | 61 | 66 | 70 | 75 | 79 | 82 | 86 | 89 | 90 | 90 | 91 | 86 | 81 | 76 | 77 | 77 | 78 |
| Precipitation Potential (%) | 22 | 22 | 22 | 22 | 22 | 10 | 10 | 10 | 10 | 10 | 10 | 40 | 40 | 40 | 40 | 40 | 40 | 23 | 23 | 23 | 23 | 23 | 23 | 75 |
| Relative Humidity (%) | 53 | 53 | 53 | 57 | 59 | 60 | 71 | 76 | 79 | 84 | 87 | 90 | 93 | 97 | 100 | 100 | 100 | 100 | 97 | 94 | 88 | 82 | 77 | 72 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | SChc | SChc | SChc | Ocnl |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | Chc |
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