| Point Forecast: 7 Miles N Donner Summit CA 39.44N 120.37W (Elev. 7746 ft) |
Last Update: 11:30 pm PDT Aug 13, 2026 |
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| Date | 08/14 | |||||||||||||||||||||||
| Hour (PDT) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°F) | 49 | 48 | 49 | 48 | 48 | 48 | 46 | 48 | 49 | 50 | 53 | 55 | 59 | 59 | 60 | 60 | 61 | 59 | 57 | 55 | 51 | 48 | 48 | 48 |
| Dewpoint (°F) | 46 | 46 | 46 | 46 | 45 | 45 | 43 | 45 | 44 | 43 | 44 | 43 | 44 | 44 | 45 | 45 | 46 | 46 | 46 | 48 | 46 | 43 | 43 | 42 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 14 | 14 | 14 | 11 | 11 | 11 | 13 | 13 | 13 | 15 | 15 | 15 | 16 |
| Wind Dir | S | S | S | S | S | S | S | S | S | S | S | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | S |
| Gust | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 23 | 23 | 23 | 24 | |||||||||||
| Sky Cover (%) | 40 | 40 | 32 | 32 | 32 | 39 | 39 | 39 | 44 | 44 | 44 | 26 | 26 | 26 | 11 | 11 | 11 | 4 | 4 | 4 | 7 | 7 | 7 | 9 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 6 | 6 | 6 | 6 | 6 | 6 | 3 | 3 | 3 | 1 | 1 | 1 | 1 |
| Relative Humidity (%) | 89 | 91 | 91 | 91 | 90 | 89 | 90 | 89 | 84 | 78 | 71 | 63 | 57 | 57 | 57 | 57 | 57 | 61 | 67 | 76 | 84 | 84 | 84 | 80 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/15 | |||||||||||||||||||||||
| Hour (PDT) | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| Temperature (°F) | 48 | 48 | 48 | 47 | 47 | 46 | 46 | 48 | 49 | 50 | 53 | 57 | 61 | 62 | 63 | 64 | 63 | 61 | 59 | 56 | 52 | 50 | 50 | 50 |
| Dewpoint (°F) | 43 | 43 | 43 | 42 | 41 | 40 | 39 | 39 | 39 | 36 | 36 | 37 | 38 | 39 | 40 | 41 | 41 | 43 | 44 | 45 | 43 | 42 | 42 | 41 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 15 | 15 | 15 | 18 |
| Wind Dir | S | S | S | S | S | S | S | S | S | S | S | SW | SW | SW | SW | SW | SW | SW | SW | SW | W | W | W | SW |
| Gust | 24 | 24 | 24 | 24 | 24 | 28 | ||||||||||||||||||
| Sky Cover (%) | 9 | 9 | 8 | 8 | 8 | 5 | 5 | 5 | 6 | 6 | 6 | 4 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 7 | 7 | 7 | 14 |
| Precipitation Potential (%) | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 84 | 84 | 84 | 84 | 81 | 79 | 77 | 71 | 67 | 58 | 53 | 47 | 43 | 42 | 42 | 43 | 45 | 51 | 58 | 66 | 72 | 74 | 74 | 72 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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