| Point Forecast: Charleston SC 32.79N 80.01W (Elev. 3 m) |
Last Update: 3:07 pm EDT Aug 15, 2026 |
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| Date | 08/15 | 08/16 | ||||||||||||||||||||||
| Hour (EDT) | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| Temperature (°C) | 33 | 32 | 30 | 29 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 26 | 27 | 28 | 31 | 32 | 34 | 34 | 34 | 34 | 34 | 32 |
| Dewpoint (°C) | 27 | 26 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Heat Index (°C) | 43 | 41 | 38 | 36 | 34 | 34 | 33 | 33 | 32 | 32 | 32 | 32 | 31 | 26 | 32 | 34 | 39 | 41 | 43 | 44 | 44 | 43 | 43 | 41 |
| Surface Wind (mph) | 9 | 7 | 6 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 7 | 7 | 8 | 8 |
| Wind Dir | S | S | SW | SW | SW | SW | SW | SW | SW | W | W | W | W | W | W | W | W | W | SE | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 49 | 51 | 63 | 67 | 67 | 66 | 53 | 44 | 34 | 37 | 54 | 45 | 50 | 28 | 34 | 32 | 46 | 37 | 33 | 41 | 48 | 44 | 44 | 47 |
| Precipitation Potential (%) | 22 | 30 | 26 | 14 | 9 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 5 | 6 | 6 | 6 | 7 | 13 | 14 | 15 | 31 | 33 | 30 | 22 |
| Relative Humidity (%) | 70 | 73 | 82 | 85 | 88 | 88 | 91 | 91 | 94 | 94 | 91 | 91 | 94 | 97 | 91 | 88 | 75 | 68 | 62 | 62 | 62 | 64 | 64 | 70 |
| Rain | SChc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | Chc | Chc | Chc | SChc |
| Thunder | SChc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | Chc | Chc | Chc | SChc |
| Date | 08/17 | |||||||||||||||||||||||
| Hour (EDT) | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| Temperature (°C) | 32 | 32 | 30 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 29 | 31 | 33 | 34 | 36 | 36 | 36 | 36 | 34 |
| Dewpoint (°C) | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 27 | 27 | 26 | 26 | 26 | 26 | 26 |
| Heat Index (°C) | 41 | 41 | 38 | 37 | 36 | 36 | 33 | 33 | 33 | 32 | 32 | 31 | 31 | 31 | 31 | 35 | 39 | 43 | 45 | 46 | 47 | 47 | 46 | 44 |
| Surface Wind (mph) | 8 | 7 | 6 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 6 | 6 | 7 | 9 | 10 | 11 |
| Wind Dir | S | S | SW | S | S | S | SW | SW | SW | SW | W | W | W | W | W | W | W | W | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 50 | 51 | 43 | 68 | 63 | 66 | 42 | 19 | 8 | 4 | 15 | 30 | 14 | 8 | 11 | 0 | 5 | 9 | 14 | 18 | 23 | 22 | 20 | 19 |
| Precipitation Potential (%) | 21 | 16 | 6 | 5 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 6 | 6 | 6 |
| Relative Humidity (%) | 70 | 73 | 80 | 82 | 85 | 85 | 91 | 91 | 91 | 91 | 91 | 88 | 91 | 91 | 88 | 82 | 76 | 70 | 64 | 58 | 57 | 57 | 59 | 62 |
| Rain | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
