| Point Forecast: Quincy MA 42.26N 71W (Elev. 20 ft) |
Last Update: 2:30 pm EDT Jul 18, 2026 |
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| Date | 07/18 | 07/19 | ||||||||||||||||||||||
| 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) | 77 | 76 | 76 | 73 | 72 | 72 | 72 | 73 | 73 | 73 | 73 | 74 | 72 | 71 | 70 | 70 | 71 | 72 | 74 | 75 | 77 | 79 | 80 | 80 |
| Dewpoint (°F) | 67 | 68 | 68 | 68 | 68 | 69 | 70 | 71 | 71 | 71 | 71 | 70 | 69 | 68 | 66 | 64 | 62 | 61 | 60 | 58 | 58 | 58 | 57 | 56 |
| Heat Index (°F) | 77 | 76 | 76 | 75 | 77 | 79 | 80 | 80 | ||||||||||||||||
| Surface Wind (mph) | 17 | 18 | 18 | 17 | 16 | 15 | 15 | 14 | 13 | 13 | 11 | 11 | 10 | 10 | 11 | 11 | 13 | 13 | 13 | 13 | 13 | 13 | 11 | 11 |
| Wind Dir | S | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | W | W | W | NW | NW | NW | NW | NW | NW | NW | NW | NW |
| Gust | 30 | 31 | 33 | 31 | 29 | 28 | 26 | 24 | 23 | |||||||||||||||
| Sky Cover (%) | 65 | 77 | 70 | 86 | 95 | 86 | 79 | 86 | 92 | 85 | 74 | 59 | 70 | 68 | 50 | 41 | 27 | 21 | 2 | 1 | 0 | 1 | 1 | 1 |
| Precipitation Potential (%) | 41 | 48 | 40 | 43 | 45 | 55 | 66 | 44 | 20 | 16 | 11 | 9 | 5 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 71 | 76 | 76 | 84 | 87 | 90 | 93 | 93 | 93 | 93 | 93 | 87 | 90 | 90 | 87 | 81 | 73 | 68 | 62 | 56 | 52 | 49 | 45 | 44 |
| Rain | Chc | Chc | Chc | Chc | Chc | Lkly | Lkly | Chc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | SChc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/20 | |||||||||||||||||||||||
| 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) | 81 | 80 | 80 | 79 | 75 | 73 | 71 | 70 | 69 | 67 | 66 | 64 | 63 | 62 | 62 | 64 | 68 | 70 | 74 | 77 | 79 | 81 | 81 | 82 |
| Dewpoint (°F) | 55 | 55 | 55 | 55 | 54 | 54 | 54 | 53 | 53 | 52 | 52 | 52 | 52 | 52 | 52 | 53 | 54 | 55 | 54 | 53 | 53 | 53 | 54 | 54 |
| Heat Index (°F) | 81 | 80 | 80 | 79 | 75 | 77 | 79 | 80 | 81 | 81 | ||||||||||||||
| Surface Wind (mph) | 11 | 10 | 9 | 8 | 6 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 5 | 5 | 6 | 6 | 6 |
| Wind Dir | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | W | W | W | W | W | W | W | W | W | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 2 | 4 | 2 | 4 | 7 | 6 | 2 | 2 | 2 | 12 | 1 | 3 | 3 | 0 | 2 | 0 | 0 | 0 | 12 | 23 | 21 | 19 | 16 | 18 |
| 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 (%) | 41 | 42 | 42 | 44 | 48 | 51 | 55 | 55 | 57 | 59 | 61 | 65 | 67 | 70 | 70 | 67 | 61 | 59 | 50 | 43 | 41 | 38 | 39 | 38 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
