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| Point Forecast: Dumfries VA 38.56N 77.34W (Elev. 98 ft) |
Last Update: 1:31 am EDT Jul 24, 2021 |
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| Date | 07/24 | 07/25 | ||||||||||||||||||||||
| Hour (EDT) | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 |
| Temperature (°F) | 65 | 65 | 66 | 67 | 70 | 73 | 76 | 80 | 82 | 84 | 85 | 86 | 86 | 85 | 84 | 82 | 79 | 77 | 76 | 75 | 74 | 74 | 73 | 73 |
| Dewpoint (°F) | 60 | 61 | 60 | 61 | 62 | 64 | 65 | 66 | 67 | 66 | 67 | 67 | 66 | 66 | 66 | 67 | 66 | 66 | 65 | 65 | 65 | 64 | 64 | 63 |
| Heat Index (°F) | 76 | 82 | 85 | 86 | 88 | 89 | 88 | 87 | 86 | 85 | 79 | 77 | 76 | 75 | ||||||||||
| Surface Wind (mph) | 1 | 1 | 0 | 1 | 1 | 2 | 5 | 6 | 6 | 7 | 8 | 9 | 9 | 10 | 8 | 8 | 6 | 6 | 6 | 7 | 6 | 6 | 6 | 6 |
| Wind Dir | SW | W | SW | SW | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 30 | 29 | 28 | 34 | 39 | 44 | 46 | 48 | 50 | 38 | 36 | 32 | 24 | 21 | 28 | 32 | 45 | 42 | 47 | 56 | 55 | 60 | 62 | 58 |
| Precipitation Potential (%) | 3 | 3 | 3 | 3 | 7 | 7 | 7 | 7 | 7 | 7 | 11 | 11 | 11 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 21 | 21 |
| Relative Humidity (%) | 84 | 87 | 81 | 81 | 76 | 73 | 69 | 62 | 61 | 55 | 55 | 53 | 51 | 53 | 55 | 61 | 64 | 69 | 69 | 71 | 74 | 71 | 73 | 71 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/26 | |||||||||||||||||||||||
| Hour (EDT) | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 |
| Temperature (°F) | 72 | 71 | 71 | 72 | 74 | 76 | 80 | 84 | 87 | 90 | 92 | 93 | 92 | 91 | 89 | 87 | 84 | 81 | 79 | 77 | 76 | 76 | 76 | 75 |
| Dewpoint (°F) | 63 | 64 | 64 | 65 | 66 | 68 | 69 | 70 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 71 |
| Heat Index (°F) | 76 | 83 | 88 | 93 | 96 | 99 | 100 | 99 | 98 | 95 | 93 | 89 | 85 | 79 | 77 | 76 | 76 | 76 | 75 | |||||
| Surface Wind (mph) | 6 | 6 | 6 | 6 | 7 | 8 | 8 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 7 | 6 | 5 | 3 | 3 | 3 | 2 | 2 | 2 |
| Wind Dir | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | SW | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 54 | 57 | 59 | 43 | 50 | 56 | 52 | 55 | 52 | 44 | 39 | 42 | 50 | 58 | 60 | 59 | 58 | 58 | 59 | 59 | 57 | 53 | 50 | 49 |
| Precipitation Potential (%) | 21 | 21 | 21 | 21 | 6 | 6 | 6 | 6 | 6 | 6 | 25 | 25 | 25 | 25 | 25 | 25 | 27 | 27 | 27 | 27 | 27 | 27 | 9 | 9 |
| Relative Humidity (%) | 73 | 79 | 79 | 79 | 76 | 76 | 69 | 63 | 59 | 54 | 51 | 49 | 51 | 52 | 56 | 59 | 65 | 72 | 77 | 82 | 85 | 85 | 85 | 87 |
| Rain | SChc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- |
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