| Point Forecast: Chatham MA 41.68N 69.96W (Elev. 13 ft) |
Last Update: 3:27 pm EDT Jul 15, 2025 |
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| Date | 07/15 | 07/16 | ||||||||||||||||||||||
| Hour (EDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°F) | 72 | 72 | 72 | 71 | 71 | 71 | 71 | 71 | 71 | 72 | 73 | 74 | 76 | 77 | 78 | 79 | 79 | 78 | 78 | 77 | 77 | 76 | 76 | 76 |
| Dewpoint (°F) | 72 | 72 | 71 | 71 | 71 | 71 | 71 | 71 | 71 | 72 | 73 | 73 | 74 | 74 | 74 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 73 | 73 |
| Heat Index (°F) | 76 | 77 | 78 | 79 | 79 | 78 | 78 | 77 | 77 | 76 | 76 | 76 | ||||||||||||
| Surface Wind (mph) | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 8 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 |
| 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 (%) | 78 | 86 | 94 | 94 | 93 | 93 | 91 | 90 | 88 | 75 | 62 | 65 | 59 | 52 | 46 | 41 | 36 | 39 | 42 | 45 | 54 | 63 | 62 | 64 |
| Precipitation Potential (%) | 0 | 0 | 1 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| Relative Humidity (%) | 100 | 100 | 97 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 97 | 94 | 90 | 88 | 88 | 88 | 91 | 91 | 94 | 90 | 94 | 90 | 90 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/17 | |||||||||||||||||||||||
| Hour (EDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°F) | 75 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 74 | 75 | 75 | 76 | 77 | 78 | 77 | 77 | 77 | 77 | 77 | 77 | 76 | 76 | 75 | 75 |
| Dewpoint (°F) | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 72 | 72 | 73 | 74 | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 74 |
| Heat Index (°F) | 75 | 75 | 75 | 76 | 77 | 77 | 77 | 77 | 77 | 77 | 77 | 76 | 76 | 75 | 75 | |||||||||
| Surface Wind (mph) | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 11 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 11 |
| 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 | 69 | 73 | 77 | 82 | 86 | 90 | 94 | 89 | 84 | 79 | 76 | 74 | 71 | 71 | 71 | 71 | 68 | 65 | 62 | 67 | 71 | 76 | 71 |
| Precipitation Potential (%) | 3 | 4 | 5 | 7 | 8 | 9 | 11 | 12 | 14 | 16 | 18 | 20 | 21 | 23 | 22 | 21 | 19 | 18 | 17 | 15 | 16 | 17 | 18 | 19 |
| Relative Humidity (%) | 94 | 97 | 97 | 93 | 93 | 93 | 93 | 93 | 93 | 94 | 100 | 98 | 95 | 94 | 93 | 93 | 94 | 93 | 93 | 94 | 95 | 96 | 97 | 97 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | SChc | SChc |
