| Point Forecast: New Castle NH 43.07N 70.72W (Elev. 26 ft) |
Last Update: 6:33 pm EDT Aug 18, 2026 |
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| Date | 08/19 | 08/20 | ||||||||||||||||||||||
| Hour (EDT) | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 |
| Temperature (°F) | 65 | 66 | 65 | 64 | 64 | 63 | 65 | 67 | 71 | 74 | 76 | 78 | 79 | 79 | 80 | 79 | 79 | 78 | 75 | 72 | 71 | 70 | 69 | 68 |
| Dewpoint (°F) | 65 | 65 | 65 | 64 | 64 | 63 | 65 | 67 | 68 | 69 | 69 | 68 | 68 | 68 | 68 | 68 | 67 | 67 | 67 | 67 | 66 | 65 | 64 | 63 |
| Heat Index (°F) | 76 | 78 | 79 | 79 | 83 | 79 | 79 | 78 | 75 | |||||||||||||||
| Surface Wind (mph) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 5 | 6 | 5 | 8 | 8 | 8 | 6 | 7 | 6 | 5 | 3 | 3 | 2 | 2 | 2 |
| Wind Dir | E | NE | SW | NW | NW | W | W | W | SW | SW | SW | SW | SW | S | SW | SW | SW | SW | S | S | S | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 61 | 62 | 66 | 67 | 74 | 63 | 60 | 59 | 60 | 43 | 41 | 34 | 29 | 37 | 25 | 31 | 21 | 14 | 23 | 22 | 30 | 29 | 36 | 39 |
| Precipitation Potential (%) | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 2 | 2 | 3 | 2 | 2 | 4 | 7 | 5 | 5 | 4 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 100 | 97 | 100 | 100 | 100 | 100 | 100 | 100 | 90 | 84 | 79 | 71 | 69 | 69 | 67 | 69 | 67 | 69 | 76 | 84 | 84 | 84 | 84 | 84 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/21 | |||||||||||||||||||||||
| Hour (EDT) | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 |
| Temperature (°F) | 67 | 67 | 67 | 66 | 66 | 65 | 66 | 69 | 72 | 75 | 77 | 78 | 78 | 78 | 78 | 77 | 76 | 74 | 72 | 70 | 68 | 67 | 66 | 65 |
| Dewpoint (°F) | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 65 | 65 | 65 | 65 | 65 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 64 | 63 | 63 | 62 |
| Heat Index (°F) | 75 | 77 | 78 | 78 | 78 | 78 | 77 | 76 | ||||||||||||||||
| Surface Wind (mph) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 5 | 5 | 5 | 3 | 2 | 1 | 1 | 1 | 1 | 1 |
| Wind Dir | W | W | W | W | W | W | NW | NW | NW | NW | NW | W | S | SE | SE | S | S | S | S | S | SW | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 37 | 42 | 52 | 53 | 63 | 54 | 55 | 45 | 43 | 48 | 44 | 44 | 45 | 45 | 47 | 48 | 50 | 53 | 55 | 58 | 52 | 46 | 40 | 36 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 6 | 10 | 14 | 18 | 19 | 19 | 20 | 19 | 17 | 16 | 16 | 13 | 11 | 10 |
| Relative Humidity (%) | 87 | 87 | 87 | 90 | 90 | 93 | 90 | 87 | 79 | 71 | 67 | 64 | 62 | 62 | 62 | 64 | 66 | 71 | 76 | 81 | 87 | 87 | 90 | 90 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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