| Point Forecast: Sterling VA 38.99N 77.41W (Elev. 99 m) |
Last Update: 7:30 pm EDT Jul 14, 2025 |
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| Date | 07/15 | |||||||||||||||||||||||
| Hour (EDT) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°C) | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 30 | 29 | 29 | 28 | 28 | 27 | 26 | 25 | 24 |
| Dewpoint (°C) | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 23 | 23 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Heat Index (°C) | 24 | 25 | 26 | 31 | 32 | 33 | 34 | 34 | 34 | 33 | 32 | 32 | 31 | 26 | 25 | 24 | ||||||||
| Surface Wind (mph) | 2 | 1 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 |
| Wind Dir | SE | S | SW | W | NW | N | N | N | N | N | N | N | NE | NE | E | E | SE | S | S | S | S | SE | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 62 | 67 | 68 | 50 | 56 | 67 | 75 | 61 | 67 | 62 | 56 | 59 | 40 | 48 | 54 | 57 | 63 | 76 | 68 | 66 | 64 | 46 | 48 | 49 |
| Precipitation Potential (%) | 20 | 20 | 17 | 12 | 10 | 10 | 9 | 8 | 14 | 14 | 14 | 14 | 15 | 20 | 31 | 36 | 44 | 63 | 52 | 49 | 21 | 21 | 21 | 21 |
| Relative Humidity (%) | 100 | 97 | 97 | 100 | 93 | 97 | 97 | 97 | 94 | 90 | 88 | 82 | 77 | 72 | 68 | 68 | 72 | 74 | 77 | 79 | 82 | 88 | 94 | 97 |
| Rain | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Chc | Chc | Chc | Lkly | Chc | Chc | SChc | SChc | SChc | SChc |
| Thunder | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | -- |
| Date | 07/16 | |||||||||||||||||||||||
| Hour (EDT) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°C) | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 24 | 26 | 27 | 28 | 29 | 31 | 31 | 31 | 31 | 30 | 29 | 28 | 27 | 27 | 26 | 26 |
| Dewpoint (°C) | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 |
| Heat Index (°C) | 24 | 24 | 24 | 24 | 24 | 24 | 26 | 31 | 33 | 34 | 37 | 37 | 37 | 36 | 35 | 33 | 32 | 31 | 29 | 26 | 26 | |||
| Surface Wind (mph) | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 6 |
| Wind Dir | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 48 | 47 | 46 | 54 | 63 | 71 | 71 | 71 | 71 | 66 | 60 | 55 | 63 | 72 | 80 | 80 | 80 | 80 | 80 | 80 | 73 | 74 | 74 | 75 |
| Precipitation Potential (%) | 21 | 21 | 14 | 14 | 14 | 14 | 14 | 14 | 19 | 19 | 19 | 19 | 19 | 19 | 69 | 69 | 69 | 69 | 69 | 69 | 23 | 23 | 23 | 23 |
| Relative Humidity (%) | 100 | 97 | 97 | 97 | 100 | 100 | 100 | 100 | 97 | 91 | 85 | 80 | 75 | 70 | 68 | 68 | 68 | 70 | 74 | 77 | 82 | 85 | 85 | 88 |
| Rain | SChc | SChc | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | Lkly | Lkly | Lkly | Lkly | Lkly | Lkly | SChc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | SChc |
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