| Point Forecast: 2 Miles W Portland International Airport OR 45.57N 122.65W (Elev. 177 ft) |
Last Update: 3:41 pm PDT Aug 15, 2026 |
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| Date | 08/15 | 08/16 | ||||||||||||||||||||||
| Hour (PDT) | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 |
| Temperature (°F) | 76 | 78 | 80 | 79 | 78 | 76 | 71 | 69 | 67 | 65 | 63 | 62 | 62 | 60 | 60 | 59 | 58 | 60 | 62 | 65 | 68 | 71 | 74 | 77 |
| Dewpoint (°F) | 63 | 63 | 63 | 62 | 62 | 63 | 61 | 60 | 59 | 58 | 57 | 57 | 57 | 56 | 56 | 55 | 55 | 56 | 57 | 59 | 60 | 60 | 60 | 60 |
| Heat Index (°F) | 76 | 78 | 81 | 79 | 78 | 76 | 77 | |||||||||||||||||
| Surface Wind (mph) | 3 | 3 | 2 | 2 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 5 |
| Wind Dir | W | NW | NW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 46 | 36 | 43 | 45 | 76 | 87 | 86 | 83 | 84 | 82 | 80 | 83 | 79 | 87 | 92 | 76 | 69 | 59 | 55 | 32 | 33 | 31 | 21 | 17 |
| Precipitation Potential (%) | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 63 | 59 | 56 | 56 | 57 | 63 | 70 | 73 | 76 | 79 | 82 | 83 | 84 | 86 | 86 | 88 | 89 | 87 | 85 | 82 | 76 | 69 | 62 | 55 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/17 | |||||||||||||||||||||||
| Hour (PDT) | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 |
| Temperature (°F) | 80 | 81 | 81 | 82 | 80 | 77 | 73 | 70 | 68 | 66 | 65 | 64 | 62 | 61 | 61 | 59 | 60 | 61 | 63 | 66 | 68 | 72 | 75 | 79 |
| Dewpoint (°F) | 59 | 58 | 56 | 57 | 57 | 59 | 59 | 59 | 59 | 58 | 59 | 58 | 57 | 57 | 57 | 56 | 57 | 58 | 59 | 61 | 61 | 62 | 61 | 61 |
| Heat Index (°F) | 81 | 81 | 81 | 82 | 80 | 77 | 75 | 79 | ||||||||||||||||
| Surface Wind (mph) | 5 | 5 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 3 | 3 | 3 | 5 |
| Wind Dir | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | NNW | N | N | N | N | N | N | NNW | NNW | NNW | NNW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 20 | 43 | 57 | 57 | 57 | 81 | 81 | 81 | 88 | 88 | 88 | 85 | 85 | 85 | 52 | 52 | 52 | 56 | 56 | 56 | 36 | 36 | 36 | 22 |
| 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 (%) | 49 | 46 | 43 | 43 | 46 | 54 | 62 | 68 | 73 | 76 | 80 | 82 | 84 | 87 | 88 | 90 | 90 | 89 | 87 | 83 | 78 | 71 | 62 | 55 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
