| Point Forecast: Portland International Airport OR 45.58N 122.59W (Elev. 200 ft) |
Last Update: 6:41 am PDT Aug 10, 2026 |
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| Date | 08/10 | 08/11 | ||||||||||||||||||||||
| Hour (PDT) | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 |
| Temperature (°F) | 56 | 58 | 60 | 61 | 65 | 68 | 71 | 74 | 77 | 81 | 81 | 82 | 83 | 81 | 78 | 73 | 70 | 68 | 65 | 64 | 62 | 60 | 60 | 59 |
| Dewpoint (°F) | 52 | 54 | 54 | 54 | 56 | 56 | 56 | 57 | 56 | 58 | 56 | 57 | 58 | 56 | 57 | 55 | 55 | 55 | 54 | 55 | 54 | 53 | 54 | 54 |
| Heat Index (°F) | 77 | 81 | 81 | 82 | 83 | 81 | 78 | |||||||||||||||||
| Surface Wind (mph) | 2 | 2 | 3 | 3 | 5 | 5 | 6 | 6 | 7 | 8 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 7 | 6 | 6 | 5 | 3 | 2 | 2 |
| Wind Dir | N | NNW | NW | NW | NW | NW | NW | NW | NW | NW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NW | NW | NW | WNW | WNW | WNW | NW |
| Gust | 18 | 18 | ||||||||||||||||||||||
| Sky Cover (%) | 40 | 50 | 56 | 59 | 45 | 35 | 24 | 15 | 16 | 12 | 6 | 8 | 3 | 4 | 13 | 12 | 10 | 9 | 17 | 14 | 14 | 15 | 16 | 38 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 |
| Relative Humidity (%) | 87 | 85 | 81 | 78 | 72 | 66 | 60 | 55 | 49 | 45 | 42 | 42 | 42 | 43 | 48 | 54 | 59 | 63 | 68 | 72 | 75 | 78 | 81 | 83 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/12 | |||||||||||||||||||||||
| Hour (PDT) | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 |
| Temperature (°F) | 58 | 59 | 60 | 63 | 66 | 70 | 73 | 76 | 81 | 82 | 83 | 84 | 82 | 80 | 78 | 75 | 71 | 68 | 66 | 65 | 63 | 62 | 61 | 60 |
| Dewpoint (°F) | 54 | 54 | 54 | 56 | 57 | 58 | 58 | 59 | 60 | 59 | 60 | 60 | 60 | 60 | 62 | 61 | 60 | 59 | 59 | 59 | 58 | 58 | 57 | 56 |
| Heat Index (°F) | 76 | 82 | 82 | 83 | 84 | 82 | 81 | 78 | 75 | |||||||||||||||
| Surface Wind (mph) | 2 | 2 | 3 | 3 | 3 | 6 | 6 | 6 | 8 | 8 | 8 | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 6 | 6 | 6 | 3 |
| Wind Dir | NW | NW | NNW | NNW | NNW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW | NW |
| Gust | 18 | 18 | 18 | 18 | 18 | 18 | ||||||||||||||||||
| Sky Cover (%) | 38 | 38 | 50 | 50 | 50 | 30 | 30 | 30 | 7 | 7 | 7 | 5 | 5 | 5 | 17 | 17 | 17 | 17 | 17 | 17 | 34 | 34 | 34 | 66 |
| 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 (%) | 86 | 84 | 81 | 77 | 72 | 65 | 60 | 55 | 49 | 46 | 45 | 45 | 47 | 51 | 57 | 62 | 68 | 73 | 78 | 82 | 85 | 87 | 87 | 87 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
