| Point Forecast: South Walpole MA 42.1N 71.25W (Elev. 289 ft) |
Last Update: 8:09 pm EDT Jul 19, 2026 |
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| Date | 07/20 | |||||||||||||||||||||||
| Hour (EDT) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°F) | 61 | 59 | 58 | 57 | 56 | 55 | 56 | 59 | 62 | 67 | 72 | 75 | 76 | 79 | 79 | 80 | 81 | 79 | 78 | 76 | 71 | 68 | 66 | 65 |
| Dewpoint (°F) | 53 | 53 | 52 | 52 | 51 | 51 | 52 | 54 | 56 | 57 | 56 | 55 | 55 | 55 | 55 | 55 | 56 | 57 | 58 | 59 | 59 | 59 | 58 | 58 |
| Heat Index (°F) | 75 | 76 | 79 | 79 | 80 | 81 | 79 | 78 | 76 | |||||||||||||||
| Surface Wind (mph) | 3 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 5 | 5 | 5 |
| Wind Dir | NW | NW | NW | W | W | W | W | W | NW | NW | NW | W | W | W | SW | SW | SW | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 2 | 5 | 4 | 2 | 8 | 3 | 0 | 2 | 4 | 12 | 18 | 15 | 14 | 13 | 9 | 1 | 5 | 13 | 18 | 7 | 26 | 31 | 30 | 47 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 75 | 80 | 80 | 83 | 83 | 86 | 86 | 83 | 81 | 70 | 57 | 50 | 48 | 44 | 44 | 42 | 42 | 47 | 50 | 56 | 66 | 73 | 75 | 78 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/21 | |||||||||||||||||||||||
| Hour (EDT) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°F) | 63 | 62 | 61 | 60 | 60 | 59 | 60 | 61 | 65 | 70 | 73 | 74 | 76 | 77 | 77 | 77 | 77 | 76 | 74 | 73 | 71 | 70 | 70 | 70 |
| Dewpoint (°F) | 58 | 58 | 58 | 58 | 59 | 59 | 60 | 61 | 64 | 64 | 64 | 63 | 63 | 63 | 64 | 65 | 66 | 67 | 68 | 68 | 69 | 70 | 70 | 70 |
| Heat Index (°F) | 76 | 77 | 77 | 77 | 77 | 76 | ||||||||||||||||||
| Surface Wind (mph) | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 7 | 8 | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 8 | 8 | 7 | 7 | 7 | 7 |
| Wind Dir | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S |
| Gust | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | ||||||||||||||||
| Sky Cover (%) | 26 | 17 | 28 | 49 | 55 | 84 | 81 | 75 | 79 | 79 | 74 | 69 | 70 | 71 | 72 | 76 | 79 | 83 | 85 | 86 | 88 | 90 | 91 | 96 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 10 | 13 | 16 | 19 | 24 | 28 | 65 | 74 | 84 | 93 |
| Relative Humidity (%) | 84 | 87 | 90 | 93 | 96 | 100 | 100 | 100 | 97 | 81 | 73 | 69 | 64 | 62 | 64 | 67 | 69 | 74 | 82 | 84 | 93 | 100 | 100 | 100 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Lkly | Lkly | Ocnl | Ocnl |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | Chc | Chc | Chc | Chc | SChc |
