| Point Forecast: 3 Miles NE Donner Summit CA 39.36N 120.35W (Elev. 2289 m) |
Last Update: 5:21 pm PDT Jul 15, 2025 |
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| Date | 07/15 | 07/16 | ||||||||||||||||||||||
| Hour (PDT) | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Temperature (°C) | 21 | 21 | 19 | 17 | 14 | 12 | 11 | 11 | 11 | 10 | 9 | 9 | 9 | 8 | 11 | 14 | 16 | 18 | 19 | 20 | 21 | 21 | 21 | 20 |
| Dewpoint (°C) | 2 | 2 | 2 | 3 | 3 | 2 | 1 | 0 | -1 | -1 | -1 | -1 | -1 | -1 | 1 | 2 | 0 | 2 | 2 | 3 | 3 | 4 | 4 | 6 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 10 | 9 | 8 | 7 | 6 | 6 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 3 | 5 | 6 | 6 | 7 | 8 | 8 | 9 |
| Wind Dir | WSW | WSW | WSW | WSW | W | W | WSW | WSW | WSW | SW | WSW | WSW | SW | SW | S | S | SSW | SW | SW | SW | SW | SW | WSW | WSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 1 | 1 | 1 | 3 | 2 | 3 | 3 | 3 | 2 | 2 | 4 | 3 | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 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 | 29 | 33 | 39 | 45 | 49 | 49 | 48 | 47 | 46 | 50 | 51 | 51 | 52 | 51 | 44 | 34 | 35 | 33 | 31 | 31 | 32 | 34 | 38 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/17 | |||||||||||||||||||||||
| Hour (PDT) | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| Temperature (°C) | 20 | 20 | 18 | 16 | 14 | 12 | 11 | 10 | 9 | 9 | 9 | 8 | 8 | 9 | 11 | 13 | 14 | 16 | 18 | 19 | 19 | 20 | 20 | 20 |
| Dewpoint (°C) | 6 | 6 | 6 | 6 | 6 | 6 | 4 | 3 | 3 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 4 | 3 | 2 | 2 | 2 | 3 | 3 | 4 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 9 | 9 | 9 | 7 | 7 | 7 | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 7 | 7 | 7 | 9 | 9 | 9 |
| Wind Dir | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | SW | WSW | WSW | WSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 2 | 2 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 6 | 6 | 6 | 2 | 2 | 2 | 2 | 2 | 2 | 7 | 7 | 7 |
| Precipitation Potential (%) | 3 | 3 | 3 | 3 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 5 | 5 | 5 | 5 | 5 |
| Relative Humidity (%) | 39 | 40 | 45 | 52 | 60 | 64 | 65 | 64 | 62 | 60 | 63 | 66 | 68 | 66 | 61 | 55 | 48 | 41 | 35 | 32 | 31 | 32 | 33 | 34 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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