| Point Forecast: Washington-Dulles International Airport VA 38.95N 77.44W (Elev. 285 ft) |
Last Update: 4:31 pm EDT May 4, 2024 |
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| Date | 05/04 | 05/05 | ||||||||||||||||||||||
| Hour (EDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°F) | 55 | 55 | 55 | 55 | 55 | 54 | 55 | 55 | 55 | 54 | 55 | 54 | 54 | 55 | 55 | 55 | 57 | 58 | 61 | 62 | 63 | 66 | 67 | 68 |
| Dewpoint (°F) | 53 | 53 | 53 | 53 | 52 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 54 | 54 | 55 | 56 | 57 | 59 | 60 | 61 | 62 | 62 | 63 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 |
| Wind Dir | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | E | SE | SE | SE | SE | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 98 | 98 | 97 | 98 | 97 | 96 | 95 | 90 |
| Precipitation Potential (%) | 82 | 77 | 77 | 77 | 53 | 53 | 53 | 64 | 64 | 64 | 89 | 89 | 89 | 95 | 95 | 95 | 86 | 86 | 86 | 67 | 67 | 67 | 56 | 56 |
| Relative Humidity (%) | 93 | 93 | 93 | 93 | 90 | 96 | 93 | 93 | 93 | 96 | 93 | 96 | 96 | 96 | 96 | 100 | 96 | 96 | 93 | 93 | 93 | 87 | 84 | 84 |
| Rain | Ocnl | Ocnl | Ocnl | Ocnl | Chc | Chc | Chc | Lkly | Lkly | Lkly | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Lkly | Lkly | Lkly | Lkly | Lkly |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc |
| Fog | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/06 | |||||||||||||||||||||||
| Hour (EDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°F) | 70 | 71 | 71 | 70 | 69 | 67 | 66 | 65 | 65 | 65 | 65 | 64 | 64 | 63 | 63 | 63 | 65 | 67 | 71 | 74 | 77 | 78 | 79 | 80 |
| Dewpoint (°F) | 63 | 63 | 64 | 63 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 63 | 63 | 63 | 65 | 66 | 66 | 66 | 66 | 66 | 66 | 66 |
| Heat Index (°F) | 77 | 78 | 79 | 82 | ||||||||||||||||||||
| Surface Wind (mph) | 10 | 10 | 9 | 8 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 |
| Wind Dir | S | S | S | S | SE | S | S | S | S | S | S | S | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 82 | 77 | 76 | 79 | 83 | 84 | 85 | 85 | 84 | 83 | 82 | 85 | 86 | 89 | 90 | 88 | 86 | 83 | 80 | 77 | 75 | 74 | 72 | 73 |
| Precipitation Potential (%) | 56 | 51 | 51 | 51 | 46 | 46 | 46 | 46 | 46 | 46 | 12 | 12 | 12 | 10 | 10 | 10 | 18 | 18 | 18 | 18 | 18 | 18 | 59 | 59 |
| Relative Humidity (%) | 78 | 76 | 79 | 78 | 84 | 90 | 93 | 97 | 97 | 97 | 97 | 100 | 100 | 100 | 100 | 100 | 100 | 97 | 84 | 76 | 69 | 67 | 64 | 62 |
| Rain | Lkly | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | Lkly | Lkly |
| Thunder | SChc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc |
| Fog | -- | -- | -- | -- | -- | -- | -- | Patchy | Patchy | Patchy | Patchy | Patchy | Patchy | Patchy | Patchy | Patchy | -- | -- | -- | -- | -- | -- | -- | -- |
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