| Point Forecast: Charlton MA 42.12N 71.96W (Elev. 259 m) |
Last Update: 1:47 pm EDT May 16, 2026 |
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| Date | 05/16 | 05/17 | ||||||||||||||||||||||
| Hour (EDT) | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| Temperature (°C) | 18 | 16 | 15 | 15 | 14 | 15 | 15 | 15 | 14 | 14 | 15 | 16 | 17 | 19 | 21 | 22 | 24 | 25 | 26 | 27 | 27 | 27 | 26 | 23 |
| Dewpoint (°C) | 9 | 9 | 9 | 8 | 8 | 8 | 9 | 9 | 10 | 11 | 12 | 12 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 12 | 12 |
| Heat Index (°C) | 24 | 25 | 26 | 27 | 27 | 27 | 26 | |||||||||||||||||
| Surface Wind (mph) | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 9 | 9 | 9 | 10 | 11 | 11 | 11 | 11 | 9 | 8 |
| Wind Dir | SW | SW | SW | SW | SW | SW | SW | SW | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 6 | 5 | 35 | 43 | 37 | 43 | 57 | 65 | 56 | 39 | 35 | 21 | 25 | 14 | 22 | 15 | 8 | 9 | 10 | 2 | 2 | 9 | 11 | 15 |
| Precipitation Potential (%) | 0 | 2 | 4 | 6 | 3 | 4 | 10 | 15 | 6 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 |
| Relative Humidity (%) | 58 | 65 | 67 | 64 | 67 | 64 | 67 | 69 | 75 | 80 | 80 | 78 | 75 | 70 | 61 | 55 | 48 | 45 | 41 | 38 | 38 | 38 | 42 | 50 |
| Rain | -- | -- | -- | -- | -- | -- | -- | SChc | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/18 | |||||||||||||||||||||||
| Hour (EDT) | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| Temperature (°C) | 21 | 19 | 17 | 16 | 16 | 15 | 14 | 13 | 13 | 12 | 12 | 14 | 15 | 17 | 18 | 19 | 21 | 23 | 24 | 25 | 25 | 24 | 23 | 21 |
| Dewpoint (°C) | 11 | 11 | 11 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 10 | 11 | 12 | 12 | 12 | 12 | 12 | 12 |
| Heat Index (°C) | 24 | 25 | 25 | 24 | ||||||||||||||||||||
| Surface Wind (mph) | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 7 | 8 | 9 | 10 | 10 | 10 | 10 | 9 |
| Wind Dir | NW | NW | NW | NW | N | N | NE | NE | NE | E | E | E | E | E | SE | SE | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 17 | 22 | 24 | 38 | 23 | 21 | 28 | 13 | 4 | 9 | 12 | 25 | 20 | 29 | 35 | 40 | 33 | 27 | 20 | 17 | 14 | 11 | 9 | 6 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 2 | 2 | 2 |
| Relative Humidity (%) | 53 | 61 | 65 | 67 | 67 | 69 | 72 | 72 | 74 | 74 | 74 | 69 | 64 | 60 | 56 | 52 | 49 | 48 | 46 | 45 | 45 | 46 | 48 | 55 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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