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| Point Forecast: Marlborough MA 42.36N 71.55W (Elev. 136 m) |
Last Update: 9:54 am 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 (°C) | 22 | 22 | 23 | 23 | 22 | 22 | 20 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 18 | 18 | 19 | 19 |
| Dewpoint (°C) | 12 | 13 | 13 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 13 | 13 | 13 | 14 | 14 | 15 | 15 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 9 | 9 | 10 | 9 | 9 | 9 | 8 | 7 | 7 | 6 | 5 | 6 | 5 | 5 | 6 | 6 | 6 |
| Wind Dir | W | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | W | W | NW | NW | NW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 28 | 60 | 45 | 23 | 22 | 33 | 44 | 53 | 58 | 34 | 32 | 40 | 25 | 33 | 27 | 11 | 22 | 35 | 43 | 59 | 53 | 59 | 78 | 92 |
| Precipitation Potential (%) | 2 | 3 | 2 | 2 | 1 | 2 | 4 | 5 | 4 | 3 | 2 | 3 | 4 | 5 | 9 | 12 | 15 | 24 | 33 | 42 | 41 | 39 | 37 | 36 |
| 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 | Chc | Chc | Chc | Chc | Chc | Chc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | -- | -- | -- |
| 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 (°C) | 20 | 21 | 21 | 21 | 20 | 18 | 17 | 16 | 16 | 14 | 14 | 13 | 12 | 12 | 11 | 10 | 10 | 9 | 9 | 10 | 12 | 13 | 15 | 16 |
| Dewpoint (°C) | 15 | 15 | 15 | 15 | 15 | 14 | 13 | 13 | 12 | 12 | 11 | 11 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 6 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Wind Dir | NW | NW | NW | NW | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 93 | 87 | 84 | 80 | 77 | 70 | 62 | 55 | 51 | 46 | 42 | 46 | 50 | 54 | 53 | 52 | 51 | 44 | 37 | 31 | 26 | 21 | 16 | 26 |
| Precipitation Potential (%) | 34 | 33 | 34 | 36 | 37 | 31 | 25 | 16 | 13 | 10 | 6 | 5 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 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 | 80 | 71 | 66 | 60 | 56 |
| Rain | Chc | Chc | Chc | Chc | Chc | Chc | Chc | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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