| Point Forecast: 2 Miles ENE Marietta, Cobb County-McCollum Field Airport GA 34.02N 84.57W (Elev. 304 m) |
Last Update: 2:27 pm EDT May 19, 2026 |
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| Date | 05/19 | 05/20 | ||||||||||||||||||||||
| Hour (EDT) | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 |
| Temperature (°C) | 31 | 31 | 32 | 32 | 32 | 31 | 29 | 26 | 24 | 24 | 23 | 22 | 22 | 21 | 21 | 21 | 20 | 20 | 21 | 22 | 26 | 27 | 29 | 31 |
| Dewpoint (°C) | 17 | 17 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 17 | 18 | 18 | 19 | 18 | 18 |
| Heat Index (°C) | 31 | 32 | 32 | 32 | 31 | 31 | 29 | 26 | 24 | 24 | 26 | 28 | 31 | 31 | ||||||||||
| Surface Wind (mph) | 5 | 5 | 5 | 5 | 6 | 5 | 3 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 3 | 5 |
| Wind Dir | S | SW | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 45 | 43 | 41 | 31 | 26 | 26 | 31 | 32 | 32 | 37 | 36 | 39 | 43 | 41 | 51 | 50 | 47 | 47 | 36 | 32 | 32 | 43 | 46 | 48 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 5 | 6 |
| Relative Humidity (%) | 44 | 41 | 39 | 37 | 37 | 40 | 47 | 58 | 63 | 65 | 67 | 69 | 72 | 74 | 76 | 77 | 77 | 78 | 78 | 74 | 66 | 59 | 51 | 48 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/21 | |||||||||||||||||||||||
| Hour (EDT) | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 |
| Temperature (°C) | 31 | 32 | 31 | 31 | 30 | 29 | 27 | 24 | 23 | 23 | 22 | 22 | 21 | 21 | 20 | 19 | 19 | 19 | 20 | 22 | 24 | 27 | 28 | 29 |
| Dewpoint (°C) | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 |
| Heat Index (°C) | 32 | 32 | 32 | 31 | 31 | 29 | 28 | 24 | 24 | 28 | 29 | 31 | ||||||||||||
| Surface Wind (mph) | 5 | 6 | 6 | 6 | 6 | 5 | 3 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 5 |
| Wind Dir | SW | W | W | W | W | W | W | W | NW | NW | W | N | N | N | N | N | N | N | N | N | S | S | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 58 | 58 | 64 | 71 | 71 | 70 | 71 | 71 | 64 | 60 | 54 | 52 | 45 | 40 | 43 | 54 | 55 | 60 | 60 | 47 | 47 | 47 | 50 | 53 |
| Precipitation Potential (%) | 16 | 24 | 31 | 35 | 32 | 31 | 27 | 26 | 6 | 4 | 3 | 2 | 13 | 13 | 13 | 13 | 13 | 13 | 17 | 17 | 17 | 17 | 17 | 17 |
| Relative Humidity (%) | 46 | 44 | 45 | 46 | 48 | 54 | 63 | 72 | 77 | 81 | 85 | 86 | 88 | 89 | 91 | 90 | 90 | 90 | 88 | 82 | 74 | 65 | 60 | 56 |
| Rain | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc |
| Thunder | SChc | SChc | Chc | Chc | Chc | Chc | Chc | Chc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc |
