| Point Forecast: Boston MA 42.36N 71.07W (Elev. 13 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) | 68 | 67 | 65 | 65 | 64 | 63 | 62 | 63 | 67 | 69 | 74 | 77 | 78 | 80 | 81 | 81 | 83 | 81 | 81 | 79 | 76 | 73 | 71 | 70 |
| Dewpoint (°F) | 52 | 52 | 52 | 52 | 51 | 51 | 52 | 53 | 55 | 55 | 54 | 54 | 54 | 54 | 54 | 55 | 55 | 55 | 56 | 57 | 58 | 58 | 58 | 57 |
| Heat Index (°F) | 77 | 78 | 80 | 81 | 81 | 82 | 81 | 81 | 79 | 76 | ||||||||||||||
| Surface Wind (mph) | 3 | 3 | 3 | 3 | 3 | 5 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 6 | 6 | 6 | 6 |
| Wind Dir | NW | W | W | W | W | W | W | W | W | NW | W | W | W | SW | S | S | S | S | S | S | S | S | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 2 | 3 | 6 | 6 | 10 | 6 | 1 | 1 | 0 | 3 | 12 | 9 | 7 | 8 | 10 | 5 | 4 | 18 | 11 | 20 | 16 | 30 | 50 | 59 |
| 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 (%) | 57 | 59 | 63 | 63 | 63 | 65 | 70 | 70 | 65 | 61 | 50 | 45 | 43 | 41 | 39 | 41 | 38 | 41 | 42 | 47 | 54 | 59 | 64 | 63 |
| 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) | 69 | 68 | 66 | 66 | 65 | 64 | 64 | 66 | 68 | 72 | 75 | 77 | 79 | 80 | 80 | 80 | 80 | 79 | 77 | 76 | 74 | 73 | 72 | 72 |
| Dewpoint (°F) | 57 | 58 | 58 | 58 | 58 | 59 | 59 | 61 | 63 | 63 | 63 | 62 | 62 | 62 | 62 | 63 | 64 | 65 | 66 | 66 | 67 | 68 | 68 | 69 |
| Heat Index (°F) | 75 | 77 | 79 | 81 | 81 | 81 | 82 | 79 | 77 | 76 | ||||||||||||||
| Surface Wind (mph) | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 7 | 8 | 10 | 11 | 13 | 13 | 13 | 13 | 13 | 11 | 10 | 9 | 8 | 7 | 7 |
| Wind Dir | SW | SW | SW | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | S | SE | SE | SE | SE | SE |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 28 | 28 | 40 | 50 | 45 | 79 | 82 | 70 | 77 | 74 | 71 | 67 | 68 | 69 | 70 | 74 | 78 | 82 | 85 | 87 | 90 | 91 | 93 | 95 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 9 | 11 | 14 | 17 | 22 | 28 | 61 | 72 | 82 | 92 |
| Relative Humidity (%) | 66 | 70 | 75 | 75 | 78 | 84 | 84 | 84 | 84 | 73 | 66 | 60 | 56 | 54 | 54 | 56 | 58 | 62 | 69 | 71 | 79 | 84 | 87 | 90 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Chc | Lkly | Lkly | Ocnl | Ocnl |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | Chc | Chc | Chc | Chc | SChc |
