| Point Forecast: Nantucket Memorial Airport MA 41.27N 70.06W (Elev. 15 m) |
Last Update: 7:45 am EDT Jul 15, 2025 |
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| Date | 07/15 | 07/16 | ||||||||||||||||||||||
| 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) | 25 | 26 | 25 | 24 | 24 | 23 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 23 | 24 | 25 | 26 | 26 | 26 |
| Dewpoint (°C) | 22 | 22 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 23 | 23 | 23 | 23 |
| Heat Index (°C) | 25 | 26 | 25 | 24 | 24 | 24 | 25 | 26 | 26 | 28 | ||||||||||||||
| Surface Wind (mph) | 10 | 10 | 10 | 9 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 9 | 9 |
| Wind Dir | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 67 | 55 | 60 | 58 | 62 | 63 | 66 | 63 | 74 | 71 | 67 | 66 | 75 | 71 | 78 | 81 | 83 | 67 | 65 | 61 | 53 | 45 | 45 | 45 |
| Precipitation Potential (%) | 7 | 6 | 6 | 6 | 5 | 5 | 6 | 5 | 5 | 6 | 6 | 7 | 8 | 8 | 8 | 5 | 5 | 5 | 2 | 2 | 2 | 2 | 2 | 2 |
| Relative Humidity (%) | 85 | 82 | 85 | 87 | 87 | 93 | 93 | 97 | 97 | 97 | 97 | 97 | 97 | 100 | 97 | 100 | 100 | 100 | 93 | 90 | 87 | 85 | 83 | 82 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/17 | |||||||||||||||||||||||
| 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) | 26 | 26 | 26 | 26 | 24 | 24 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 24 | 24 | 26 | 26 | 26 |
| Dewpoint (°C) | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 |
| Heat Index (°C) | 26 | 28 | 26 | 26 | 24 | 24 | 24 | 24 | 26 | 26 | 28 | |||||||||||||
| Surface Wind (mph) | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 11 | 11 | 13 | 13 | 14 | 15 | 15 |
| Wind Dir | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 45 | 46 | 48 | 49 | 55 | 60 | 66 | 71 | 75 | 80 | 83 | 87 | 90 | 91 | 91 | 92 | 86 | 81 | 75 | 72 | 69 | 66 | 62 | 59 |
| Precipitation Potential (%) | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 6 | 9 | 13 | 16 | 19 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 19 | 17 |
| Relative Humidity (%) | 82 | 82 | 83 | 85 | 88 | 93 | 97 | 98 | 97 | 97 | 98 | 99 | 100 | 100 | 100 | 100 | 100 | 99 | 97 | 93 | 88 | 85 | 83 | 82 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- |
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