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| Point Forecast: Marlborough MA 42.36N 71.55W (Elev. 446 ft) |
Last Update: 1:15 pm EDT Sep 27, 2021 |
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| Date | 09/27 | 09/28 | ||||||||||||||||||||||
| Hour (EDT) | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |
| Temperature (°F) | 71 | 72 | 73 | 73 | 72 | 71 | 68 | 65 | 64 | 64 | 63 | 63 | 63 | 62 | 62 | 61 | 60 | 60 | 60 | 61 | 64 | 65 | 66 | 67 |
| Dewpoint (°F) | 54 | 56 | 56 | 56 | 57 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 55 | 55 | 55 | 54 | 54 | 55 | 55 | 56 | 57 | 58 | 59 | 59 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 8 | 8 | 7 | 7 | 6 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 5 |
| Wind Dir | W | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | W | W | W | NW | NW |
| Gust | 20 | 20 | 20 | 20 | ||||||||||||||||||||
| Sky Cover (%) | 28 | 76 | 69 | 61 | 54 | 60 | 66 | 73 | 68 | 64 | 60 | 59 | 57 | 55 | 53 | 50 | 47 | 57 | 67 | 77 | 80 | 84 | 88 | 88 |
| Precipitation Potential (%) | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 3 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 5 | 9 | 13 | 17 | 19 | 21 | 23 | 26 |
| Relative Humidity (%) | 55 | 57 | 55 | 55 | 59 | 59 | 65 | 73 | 75 | 75 | 78 | 78 | 75 | 78 | 78 | 78 | 81 | 84 | 84 | 84 | 78 | 78 | 78 | 75 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | Chc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 09/29 | |||||||||||||||||||||||
| Hour (EDT) | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |
| Temperature (°F) | 68 | 69 | 69 | 69 | 68 | 65 | 63 | 61 | 60 | 58 | 57 | 56 | 54 | 53 | 51 | 50 | 50 | 49 | 49 | 51 | 53 | 56 | 59 | 61 |
| Dewpoint (°F) | 59 | 59 | 59 | 59 | 59 | 58 | 56 | 55 | 54 | 53 | 52 | 51 | 49 | 47 | 46 | 45 | 44 | 44 | 44 | 43 | 44 | 45 | 45 | 45 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Wind Dir | NW | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 88 | 88 | 87 | 86 | 86 | 76 | 65 | 55 | 56 | 56 | 56 | 54 | 51 | 49 | 47 | 45 | 43 | 39 | 35 | 31 | 26 | 21 | 16 | 26 |
| Precipitation Potential (%) | 29 | 32 | 29 | 27 | 25 | 21 | 18 | 15 | 12 | 8 | 5 | 4 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 0 | 0 | 0 | 1 |
| Relative Humidity (%) | 73 | 70 | 70 | 70 | 73 | 78 | 78 | 81 | 81 | 83 | 83 | 83 | 83 | 80 | 83 | 83 | 80 | 83 | 83 | 74 | 71 | 66 | 60 | 56 |
| Rain | Chc | Chc | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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