| Point Forecast: 3 Miles W Fairfax VA 38.85N 77.35W (Elev. 122 m) |
Last Update: 10:30 am EDT Jul 12, 2025 |
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| Date | 07/12 | 07/13 | ||||||||||||||||||||||
| Hour (EDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°C) | 26 | 26 | 25 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 24 | 25 | 26 | 27 | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 27 | 26 | 26 |
| Dewpoint (°C) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 23 | 23 | 23 | 23 | 24 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 |
| Heat Index (°C) | 26 | 26 | 25 | 24 | 24 | 24 | 24 | 25 | 26 | 29 | 32 | 33 | 34 | 34 | 34 | 33 | 32 | 29 | 26 | 26 | ||||
| Surface Wind (mph) | 6 | 6 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 5 | 3 | 3 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 |
| Wind Dir | SE | SE | SE | S | S | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 45 | 45 | 53 | 42 | 53 | 53 | 57 | 66 | 67 | 67 | 62 | 70 | 68 | 65 | 71 | 78 | 84 | 84 | 84 | 84 | 84 | 84 | 72 | 73 |
| Precipitation Potential (%) | 23 | 8 | 11 | 12 | 12 | 13 | 13 | 11 | 10 | 12 | 32 | 32 | 32 | 32 | 32 | 32 | 75 | 75 | 75 | 75 | 75 | 75 | 58 | 58 |
| Relative Humidity (%) | 85 | 85 | 87 | 90 | 94 | 94 | 97 | 97 | 97 | 97 | 94 | 90 | 88 | 85 | 82 | 82 | 80 | 80 | 77 | 80 | 82 | 85 | 88 | 91 |
| Rain | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Ocnl | Lkly | Lkly |
| Thunder | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Chc | Chc |
| Date | 07/14 | |||||||||||||||||||||||
| Hour (EDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°C) | 26 | 25 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 30 | 30 | 29 | 29 | 28 | 27 | 26 |
| Dewpoint (°C) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 |
| Heat Index (°C) | 26 | 25 | 24 | 24 | 24 | 24 | 25 | 26 | 31 | 32 | 34 | 36 | 36 | 35 | 34 | 33 | 32 | 30 | 26 | |||||
| Surface Wind (mph) | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 5 | 5 | 5 | 3 | 3 | 3 | 2 | 2 | 2 |
| Wind Dir | S | S | S | S | S | S | S | S | S | SW | SW | W | NW | NW | NW | NW | NW | N | NE | E | E | SE | SE | SE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 75 | 76 | 72 | 72 | 62 | 67 | 71 | 76 | 77 | 77 | 78 | 75 | 72 | 69 | 72 | 75 | 78 | 78 | 78 | 78 | 78 | 78 | 56 | 48 |
| Precipitation Potential (%) | 58 | 58 | 58 | 58 | 29 | 29 | 29 | 29 | 29 | 29 | 40 | 40 | 40 | 40 | 40 | 40 | 66 | 66 | 66 | 66 | 66 | 66 | 18 | 18 |
| Relative Humidity (%) | 88 | 90 | 94 | 90 | 94 | 97 | 100 | 100 | 100 | 100 | 97 | 90 | 88 | 82 | 77 | 75 | 72 | 72 | 70 | 72 | 74 | 74 | 79 | 85 |
| Rain | Lkly | Lkly | Lkly | Lkly | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | SChc | SChc |
| Thunder | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc |
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