| Point Forecast: Southampton NY 40.89N 72.39W (Elev. 46 ft) |
Last Update: 2:34 pm EDT Aug 18, 2026 |
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| Date | 08/18 | 08/19 | ||||||||||||||||||||||
| Hour (EDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°F) | 79 | 80 | 78 | 77 | 75 | 73 | 72 | 72 | 72 | 71 | 71 | 71 | 71 | 70 | 70 | 71 | 72 | 75 | 78 | 79 | 80 | 80 | 80 | 82 |
| Dewpoint (°F) | 72 | 71 | 71 | 71 | 72 | 72 | 72 | 72 | 71 | 71 | 71 | 70 | 70 | 69 | 68 | 69 | 69 | 69 | 69 | 69 | 69 | 68 | 68 | 69 |
| Heat Index (°F) | 79 | 83 | 78 | 77 | 75 | 75 | 78 | 79 | 83 | 83 | 83 | 85 | ||||||||||||
| Surface Wind (mph) | 6 | 6 | 6 | 5 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 5 | 6 | 6 | 6 | 7 |
| Wind Dir | S | S | SW | SW | SW | SW | SW | SW | SW | W | SW | W | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 47 | 41 | 41 | 19 | 21 | 24 | 20 | 42 | 40 | 26 | 43 | 47 | 52 | 58 | 70 | 51 | 40 | 56 | 40 | 31 | 8 | 7 | 9 | 9 |
| Precipitation Potential (%) | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 2 | 2 | 2 | 11 | 11 | 11 | 13 | 13 | 13 | 16 | 16 | 16 | 7 | 7 | 7 | 3 | 3 |
| Relative Humidity (%) | 79 | 74 | 79 | 82 | 90 | 97 | 100 | 100 | 97 | 100 | 100 | 97 | 97 | 97 | 93 | 93 | 90 | 82 | 74 | 72 | 69 | 67 | 67 | 65 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/20 | |||||||||||||||||||||||
| Hour (EDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°F) | 80 | 80 | 80 | 77 | 75 | 75 | 74 | 73 | 73 | 73 | 73 | 73 | 73 | 72 | 71 | 72 | 73 | 76 | 78 | 80 | 81 | 81 | 81 | 81 |
| Dewpoint (°F) | 69 | 69 | 69 | 69 | 70 | 70 | 70 | 70 | 69 | 69 | 69 | 69 | 68 | 68 | 67 | 68 | 68 | 68 | 68 | 68 | 68 | 67 | 67 | 67 |
| Heat Index (°F) | 83 | 83 | 83 | 77 | 75 | 75 | 76 | 78 | 83 | 84 | 83 | 83 | 83 | |||||||||||
| Surface Wind (mph) | 7 | 7 | 7 | 6 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 6 | 6 | 6 | 6 | 6 |
| Wind Dir | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | W | W | W | NW | NW | NW | NW | NW | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 9 | 19 | 17 | 23 | 23 | 42 | 34 | 30 | 31 | 36 | 57 | 69 | 51 | 39 | 48 | 39 | 36 | 70 | 46 | 22 | 26 | 29 | 33 | 38 |
| Precipitation Potential (%) | 3 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 6 | 6 | 6 | 6 | 6 | 18 | 18 |
| Relative Humidity (%) | 69 | 69 | 69 | 76 | 84 | 84 | 87 | 90 | 87 | 87 | 87 | 87 | 84 | 87 | 87 | 87 | 84 | 76 | 71 | 67 | 65 | 63 | 63 | 63 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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