| Point Forecast: Portland ME 43.66N 70.27W (Elev. 7 ft) |
Last Update: 6:46 am EDT Sep 10, 2026 |
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| Date | 09/10 | 09/11 | ||||||||||||||||||||||
| Hour (EDT) | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 |
| Temperature (°F) | 70 | 71 | 74 | 75 | 76 | 77 | 77 | 76 | 76 | 74 | 72 | 69 | 67 | 66 | 64 | 63 | 62 | 62 | 61 | 59 | 59 | 57 | 57 | 59 |
| Dewpoint (°F) | 66 | 65 | 62 | 60 | 58 | 57 | 56 | 55 | 53 | 54 | 54 | 54 | 55 | 54 | 53 | 53 | 53 | 51 | 51 | 50 | 49 | 49 | 49 | 49 |
| Heat Index (°F) | 75 | 76 | 77 | 77 | 76 | 76 | ||||||||||||||||||
| Surface Wind (mph) | 10 | 15 | 16 | 18 | 21 | 22 | 23 | 20 | 20 | 14 | 11 | 9 | 8 | 8 | 8 | 7 | 7 | 7 | 6 | 3 | 5 | 5 | 5 | 5 |
| Wind Dir | W | W | W | W | W | W | W | W | W | NW | W | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW |
| Gust | 22 | 25 | 26 | 30 | 34 | 36 | 38 | 31 | 33 | 25 | 21 | |||||||||||||
| Sky Cover (%) | 6 | 7 | 7 | 8 | 4 | 14 | 23 | 19 | 13 | 22 | 28 | 44 | 37 | 63 | 65 | 74 | 73 | 52 | 43 | 29 | 14 | 17 | 10 | 11 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 87 | 81 | 66 | 60 | 54 | 50 | 48 | 48 | 45 | 50 | 53 | 59 | 65 | 65 | 67 | 70 | 72 | 67 | 70 | 72 | 69 | 75 | 75 | 69 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 09/12 | |||||||||||||||||||||||
| Hour (EDT) | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 |
| Temperature (°F) | 61 | 63 | 64 | 65 | 66 | 67 | 68 | 68 | 69 | 67 | 65 | 62 | 60 | 59 | 58 | 57 | 56 | 56 | 55 | 54 | 54 | 54 | 55 | 56 |
| Dewpoint (°F) | 49 | 47 | 46 | 47 | 47 | 48 | 49 | 49 | 47 | 49 | 50 | 50 | 50 | 49 | 48 | 47 | 47 | 47 | 47 | 47 | 47 | 47 | 48 | 48 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 6 | 7 | 7 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | 5 | 5 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Wind Dir | NW | W | W | W | W | W | W | W | W | W | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 2 | 1 | 0 | 1 | 1 | 2 | 2 | 6 | 2 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 2 | 3 | 3 | 4 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 65 | 56 | 52 | 52 | 50 | 50 | 51 | 51 | 45 | 52 | 58 | 65 | 69 | 69 | 69 | 69 | 72 | 72 | 74 | 77 | 77 | 77 | 77 | 74 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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