| Point Forecast: 17 Miles SE Heppner OR 45.16N 119.32W (Elev. 1521 m) |
Last Update: 3:00 pm PDT Aug 15, 2026 |
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| Date | 08/15 | 08/16 | ||||||||||||||||||||||
| Hour (PDT) | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| Temperature (°C) | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 13 | 14 | 16 | 19 | 21 | 22 | 23 | 24 | 23 | 23 | 22 | 21 | 19 | 17 |
| Dewpoint (°C) | 8 | 8 | 7 | 7 | 7 | 7 | 8 | 7 | 7 | 6 | 7 | 7 | 7 | 8 | 9 | 9 | 8 | 8 | 7 | 8 | 8 | 8 | 7 | 7 |
| Heat Index (°C) | 24 | |||||||||||||||||||||||
| Surface Wind (mph) | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 |
| Wind Dir | N | N | NW | NW | N | NW | NW | NW | W | NW | NW | NW | NW | NW | NW | NW | NW | N | N | N | N | N | N | N |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 50 | 48 | 44 | 38 | 50 | 34 | 57 | 65 | 64 | 49 | 46 | 43 | 9 | 14 | 14 | 15 | 24 | 25 | 21 | 25 | 48 | 48 | 48 | 77 |
| Precipitation Potential (%) | 11 | 11 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 64 | 65 | 65 | 64 | 66 | 69 | 71 | 70 | 70 | 68 | 69 | 62 | 55 | 49 | 46 | 42 | 40 | 37 | 37 | 38 | 40 | 44 | 47 | 54 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/17 | |||||||||||||||||||||||
| Hour (PDT) | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| Temperature (°C) | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 14 | 17 | 18 | 21 | 22 | 23 | 24 | 24 | 24 | 23 | 22 | 21 | 18 | 17 |
| Dewpoint (°C) | 7 | 6 | 6 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 6 |
| Heat Index (°C) | 24 | 24 | 24 | |||||||||||||||||||||
| Surface Wind (mph) | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 1 |
| Wind Dir | N | N | NW | NW | NW | S | S | S | S | S | S | N | N | N | N | N | N | NW | NW | NW | N | N | N | NW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 77 | 77 | 74 | 74 | 74 | 50 | 50 | 50 | 35 | 35 | 35 | 37 | 37 | 37 | 47 | 47 | 47 | 47 | 47 | 47 | 65 | 65 | 65 | 59 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 8 | 8 | 8 | 8 | 8 | 19 | 19 | 19 | 19 |
| Relative Humidity (%) | 54 | 53 | 51 | 49 | 49 | 50 | 51 | 51 | 51 | 51 | 49 | 45 | 41 | 38 | 35 | 33 | 31 | 31 | 31 | 33 | 36 | 41 | 46 | 50 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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