| Point Forecast: Portsmouth NH 43.05N 70.78W (Elev. 49 ft) |
Last Update: 3:08 am EDT Jun 17, 2026 |
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| Date | 06/17 | 06/18 | ||||||||||||||||||||||
| Hour (EDT) | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 |
| Temperature (°F) | 57 | 56 | 55 | 56 | 59 | 64 | 69 | 72 | 75 | 76 | 76 | 76 | 77 | 75 | 74 | 73 | 70 | 68 | 65 | 64 | 64 | 63 | 62 | 61 |
| Dewpoint (°F) | 52 | 52 | 52 | 52 | 53 | 55 | 56 | 55 | 56 | 56 | 56 | 56 | 57 | 57 | 57 | 56 | 56 | 55 | 55 | 55 | 55 | 54 | 54 | 54 |
| Heat Index (°F) | 75 | 76 | 76 | 76 | 77 | 75 | ||||||||||||||||||
| Surface Wind (mph) | 2 | 2 | 2 | 1 | 1 | 0 | 1 | 2 | 5 | 6 | 7 | 8 | 8 | 8 | 8 | 7 | 6 | 6 | 5 | 5 | 5 | 3 | 3 | 3 |
| Wind Dir | W | W | W | W | W | N | SE | SE | SE | SE | SE | SE | SE | SE | SE | SE | S | S | S | S | S | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 8 | 15 | 22 | 23 | 24 | 34 | 35 | 14 | 24 | 24 | 16 | 20 | 21 | 20 | 25 | 24 | 19 | 19 | 29 | 36 | 39 | 41 | 69 | 52 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 2 | 3 | 4 | 4 |
| Relative Humidity (%) | 83 | 86 | 90 | 86 | 80 | 73 | 63 | 55 | 52 | 50 | 50 | 50 | 50 | 54 | 55 | 55 | 61 | 63 | 70 | 73 | 73 | 72 | 75 | 78 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/19 | |||||||||||||||||||||||
| Hour (EDT) | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 |
| Temperature (°F) | 60 | 59 | 59 | 58 | 60 | 62 | 63 | 66 | 67 | 68 | 70 | 71 | 72 | 75 | 74 | 75 | 75 | 72 | 70 | 69 | 69 | 68 | 66 | 65 |
| Dewpoint (°F) | 55 | 55 | 55 | 56 | 57 | 59 | 60 | 61 | 62 | 63 | 63 | 64 | 66 | 67 | 68 | 68 | 69 | 68 | 67 | 66 | 65 | 63 | 62 | 60 |
| Heat Index (°F) | 75 | 75 | 75 | |||||||||||||||||||||
| Surface Wind (mph) | 3 | 3 | 3 | 5 | 7 | 8 | 10 | 13 | 15 | 16 | 17 | 20 | 16 | 11 | 8 | 8 | 7 | 6 | 6 | 6 | 6 | 6 | 7 | 7 |
| Wind Dir | S | S | S | S | S | S | S | SE | SE | SE | SE | S | S | SW | SW | SW | SW | S | S | SW | SW | SW | W | W |
| Gust | 23 | 26 | 30 | 33 | 36 | 36 | 33 | 28 | 23 | 20 | ||||||||||||||
| Sky Cover (%) | 62 | 62 | 62 | 76 | 88 | 87 | 84 | 88 | 86 | 87 | 91 | 87 | 97 | 94 | 87 | 86 | 49 | 34 | 50 | 36 | 45 | 38 | 28 | 19 |
| Precipitation Potential (%) | 4 | 7 | 19 | 25 | 32 | 46 | 59 | 81 | 79 | 67 | 86 | 73 | 95 | 84 | 54 | 40 | 20 | 9 | 14 | 18 | 23 | 20 | 16 | 13 |
| Relative Humidity (%) | 84 | 87 | 87 | 93 | 90 | 90 | 90 | 84 | 84 | 84 | 78 | 79 | 81 | 76 | 82 | 79 | 82 | 87 | 90 | 90 | 87 | 84 | 87 | 84 |
| Rain | -- | -- | SChc | Chc | Chc | Chc | Lkly | Ocnl | Ocnl | Lkly | Ocnl | Lkly | Ocnl | Ocnl | Chc | Chc | SChc | -- | -- | SChc | SChc | SChc | SChc | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | Chc | Chc | Chc | SChc | SChc | SChc | -- | -- | -- | -- | -- | -- | -- |
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