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| Point Forecast: Washington DC 38.89N 77.05W (Elev. 1 m) |
Last Update: 4:33 pm EDT May 19, 2022 |
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| Date | 05/19 | 05/20 | ||||||||||||||||||||||
| Hour (EDT) | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| Temperature (°C) | 26 | 26 | 24 | 23 | 22 | 21 | 20 | 19 | 19 | 18 | 18 | 18 | 19 | 21 | 24 | 26 | 28 | 30 | 31 | 32 | 33 | 33 | 33 | 33 |
| Dewpoint (°C) | 14 | 14 | 15 | 15 | 15 | 15 | 16 | 15 | 16 | 16 | 16 | 16 | 16 | 17 | 18 | 18 | 18 | 19 | 19 | 19 | 20 | 19 | 19 | 19 |
| Heat Index (°C) | 26 | 26 | 24 | 24 | 26 | 29 | 32 | 33 | 34 | 36 | 34 | 36 | 36 | |||||||||||
| Surface Wind (mph) | 6 | 2 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 3 | 6 | 6 | 6 | 7 | 8 | 8 | 8 | 8 | 7 |
| Wind Dir | W | NW | W | W | SW | S | S | S | S | S | S | SE | SE | SE | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 21 | 5 | 13 | 10 | 9 | 13 | 42 | 28 | 27 | 35 | 43 | 52 | 47 | 47 | 46 | 46 | 42 | 39 | 36 | 34 | 31 | 28 | 25 | 46 |
| Precipitation Potential (%) | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 8 | 8 | 8 | 15 | 15 | 15 | 11 | 11 | 11 | 10 | 10 | 10 | 11 | 11 | 11 | 14 | 14 |
| Relative Humidity (%) | 47 | 50 | 58 | 62 | 66 | 68 | 76 | 75 | 81 | 84 | 87 | 84 | 84 | 76 | 69 | 62 | 55 | 53 | 50 | 47 | 46 | 45 | 44 | 44 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/21 | |||||||||||||||||||||||
| Hour (EDT) | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
| Temperature (°C) | 32 | 31 | 29 | 29 | 27 | 26 | 25 | 24 | 24 | 23 | 23 | 25 | 25 | 26 | 28 | 30 | 32 | 33 | 34 | 35 | 36 | 36 | 36 | 34 |
| Dewpoint (°C) | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 |
| Heat Index (°C) | 33 | 32 | 31 | 31 | 28 | 26 | 25 | 24 | 24 | 25 | 25 | 26 | 29 | 31 | 33 | 35 | 36 | 37 | 37 | 38 | 37 | 36 | ||
| Surface Wind (mph) | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 7 | 7 |
| Wind Dir | S | S | S | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | W | W | SW | SW | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 36 | 25 | 23 | 18 | 15 | 14 | 11 | 10 | 11 | 12 | 12 | 12 | 13 | 13 | 12 | 10 | 9 | 11 | 15 | 17 | 18 | 19 | 19 | 21 |
| Precipitation Potential (%) | 14 | 5 | 5 | 5 | 5 | 5 | 5 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 15 | 15 | 15 | 15 |
| Relative Humidity (%) | 48 | 52 | 55 | 57 | 65 | 69 | 69 | 71 | 74 | 74 | 74 | 67 | 69 | 64 | 58 | 51 | 47 | 43 | 40 | 39 | 36 | 35 | 35 | 37 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc |
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