| Point Forecast: Donner Summit CA 39.3N 120.4W (Elev. 2145 m) |
Last Update: 12:11 pm PDT Jul 26, 2024 |
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| Date | 07/26 | 07/27 | ||||||||||||||||||||||
| Hour (PDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°C) | 25 | 24 | 23 | 22 | 17 | 14 | 12 | 11 | 10 | 9 | 9 | 8 | 7 | 7 | 7 | 6 | 9 | 12 | 16 | 17 | 18 | 19 | 19 | 19 |
| Dewpoint (°C) | -1 | 0 | 1 | 2 | 3 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | -1 | -1 | -1 | 0 | 0 |
| Heat Index (°C) | 25 | 24 | ||||||||||||||||||||||
| Surface Wind (mph) | 9 | 8 | 7 | 6 | 6 | 5 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 5 | 5 | 6 | 7 | 8 | 8 | 8 | 8 | 8 |
| Wind Dir | SW | SW | SW | SW | WSW | WSW | SW | S | SSE | SSE | S | S | S | S | S | S | SSW | SSW | SW | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 2 | 3 | 5 | 3 | 4 | 1 | 2 | 7 | 4 | 2 | 3 | 4 | 4 | 4 | 5 | 4 | 5 | 4 | 2 | 4 | 3 | 5 | 4 | 3 |
| 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 (%) | 18 | 20 | 23 | 27 | 39 | 51 | 61 | 66 | 67 | 70 | 69 | 68 | 68 | 70 | 69 | 70 | 57 | 42 | 34 | 30 | 27 | 27 | 27 | 28 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/28 | |||||||||||||||||||||||
| Hour (PDT) | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 |
| Temperature (°C) | 19 | 18 | 18 | 17 | 13 | 11 | 9 | 8 | 7 | 7 | 7 | 6 | 6 | 6 | 7 | 8 | 9 | 13 | 16 | 19 | 21 | 21 | 21 | 22 |
| Dewpoint (°C) | 1 | 1 | 1 | 2 | 3 | 4 | 4 | 4 | 3 | 3 | 2 | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 2 | 1 | 1 | 1 | 2 | 2 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 8 | 7 | 7 | 7 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 5 | 5 | 5 | 7 | 7 |
| Wind Dir | WSW | WSW | WSW | WSW | WSW | WSW | WSW | S | S | S | SE | SE | SE | ESE | ESE | ESE | S | S | S | SW | SW | SW | WSW | WSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 2 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 |
| 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 (%) | 29 | 30 | 32 | 37 | 50 | 65 | 74 | 78 | 77 | 74 | 70 | 71 | 72 | 72 | 71 | 68 | 62 | 51 | 39 | 30 | 27 | 27 | 28 | 28 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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