| Point Forecast: Lewiston ID 46.41N 117W (Elev. 945 ft) |
Last Update: 10:14 pm PDT Jul 21, 2026 |
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| Date | 07/21 | 07/22 | ||||||||||||||||||||||
| Hour (PDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°F) | 85 | 82 | 80 | 77 | 76 | 73 | 72 | 71 | 70 | 72 | 74 | 77 | 83 | 88 | 92 | 95 | 96 | 99 | 99 | 99 | 99 | 98 | 95 | 90 |
| Dewpoint (°F) | 48 | 48 | 49 | 49 | 50 | 49 | 50 | 51 | 51 | 52 | 51 | 50 | 52 | 51 | 51 | 49 | 47 | 49 | 48 | 45 | 47 | 49 | 48 | 48 |
| Heat Index (°F) | 83 | 81 | 79 | 77 | 76 | 77 | 81 | 86 | 89 | 91 | 93 | 95 | 96 | 95 | 96 | 95 | 92 | 87 | ||||||
| Surface Wind (mph) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 5 | 3 | 3 |
| Wind Dir | S | S | S | S | SE | E | SE | E | E | E | E | NE | NE | NE | N | NW | NW | NW | NW | NW | NW | NW | NW | N |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 43 | 35 | 35 | 34 | 36 | 37 | 37 | 39 | 40 | 40 | 42 | 46 | 50 | 51 | 53 | 47 | 47 | 47 | 46 | 40 | 42 | 44 | 41 | 41 |
| Precipitation Potential (%) | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 3 | 3 |
| Relative Humidity (%) | 28 | 30 | 34 | 38 | 40 | 44 | 46 | 50 | 50 | 49 | 44 | 39 | 34 | 28 | 25 | 21 | 19 | 19 | 18 | 16 | 17 | 19 | 20 | 24 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/23 | |||||||||||||||||||||||
| Hour (PDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°F) | 86 | 84 | 81 | 78 | 78 | 74 | 74 | 72 | 72 | 74 | 76 | 79 | 84 | 89 | 93 | 96 | 99 | 100 | 100 | 101 | 99 | 98 | 96 | 93 |
| Dewpoint (°F) | 49 | 48 | 49 | 50 | 51 | 50 | 52 | 53 | 53 | 54 | 53 | 52 | 53 | 52 | 52 | 52 | 53 | 54 | 56 | 55 | 56 | 56 | 57 | 57 |
| Heat Index (°F) | 84 | 82 | 80 | 78 | 78 | 76 | 79 | 83 | 87 | 90 | 93 | 97 | 98 | 99 | 99 | 98 | 96 | 95 | 91 | |||||
| Surface Wind (mph) | 2 | 2 | 2 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 7 | 7 | 7 | 9 | 9 | 9 | 9 | 9 |
| Wind Dir | S | S | SE | E | E | E | E | E | E | E | NE | NE | NE | NW | NW | NW | NW | NW | NW | W | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 48 | 36 | 37 | 37 | 42 | 43 | 45 | 51 | 51 | 51 | 51 | 51 | 51 | 43 | 43 | 43 | 43 | 43 | 43 | 39 | 39 | 39 | 35 | 35 |
| Precipitation Potential (%) | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 22 | 22 | 22 | 22 | 22 | 19 | 19 | 19 | 19 | 19 |
| Relative Humidity (%) | 27 | 29 | 33 | 37 | 39 | 43 | 46 | 50 | 51 | 50 | 44 | 39 | 34 | 28 | 25 | 23 | 21 | 22 | 23 | 22 | 24 | 25 | 27 | 30 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc | SChc |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | SChc | SChc | SChc | -- | -- |
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