| Point Forecast: Chelmsford MA 42.6N 71.37W (Elev. 285 ft) |
Last Update: 6:38 am EDT Jun 27, 2024 |
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| Date | 06/27 | 06/28 | ||||||||||||||||||||||
| Hour (EDT) | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 |
| Temperature (°F) | 68 | 71 | 74 | 78 | 80 | 81 | 83 | 83 | 83 | 82 | 80 | 78 | 74 | 71 | 68 | 66 | 64 | 61 | 59 | 57 | 56 | 55 | 55 | 57 |
| Dewpoint (°F) | 63 | 63 | 64 | 63 | 63 | 63 | 62 | 62 | 62 | 61 | 60 | 60 | 58 | 55 | 53 | 51 | 49 | 48 | 47 | 46 | 45 | 44 | 44 | 44 |
| Heat Index (°F) | 78 | 81 | 82 | 84 | 84 | 84 | 83 | 81 | 78 | |||||||||||||||
| Surface Wind (mph) | 5 | 5 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 8 | 8 | 7 | 6 | 6 | 6 | 5 | 5 | 6 | 6 |
| Wind Dir | W | W | W | W | W | W | W | W | W | W | W | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 86 | 66 | 43 | 34 | 38 | 38 | 42 | 47 | 49 | 51 | 50 | 43 | 34 | 26 | 18 | 10 | 7 | 4 | 1 | 1 | 1 | 1 | 1 | 0 |
| Precipitation Potential (%) | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
| Relative Humidity (%) | 84 | 76 | 71 | 60 | 56 | 54 | 49 | 49 | 49 | 49 | 51 | 54 | 57 | 57 | 59 | 58 | 58 | 62 | 64 | 67 | 66 | 66 | 66 | 62 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/29 | |||||||||||||||||||||||
| Hour (EDT) | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 |
| Temperature (°F) | 60 | 63 | 66 | 68 | 70 | 72 | 74 | 75 | 76 | 76 | 75 | 73 | 70 | 67 | 64 | 62 | 60 | 59 | 58 | 57 | 56 | 56 | 58 | 60 |
| Dewpoint (°F) | 44 | 45 | 44 | 44 | 44 | 44 | 44 | 45 | 45 | 45 | 47 | 49 | 51 | 51 | 52 | 52 | 52 | 51 | 51 | 51 | 50 | 50 | 51 | 53 |
| Heat Index (°F) | 75 | 76 | 76 | 75 | ||||||||||||||||||||
| Surface Wind (mph) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 |
| Wind Dir | NW | NW | NW | NW | NW | NW | NW | NW | W | W | SW | S | SE | S | S | S | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 0 | 1 | 2 | 4 | 6 | 9 | 11 | 12 | 13 | 14 | 17 | 20 | 23 | 24 | 26 | 27 | 30 | 33 | 37 | 41 | 45 | 50 | 52 | 55 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| Relative Humidity (%) | 55 | 52 | 45 | 42 | 39 | 37 | 34 | 34 | 33 | 33 | 37 | 43 | 51 | 56 | 65 | 70 | 75 | 75 | 77 | 80 | 80 | 80 | 77 | 78 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
