| Point Forecast: 2 Miles NNE Grass Valley CA 39.25N 121.05W (Elev. 2198 ft) |
Last Update: 2:00 pm PDT May 9, 2026 |
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| Date | 05/09 | 05/10 | ||||||||||||||||||||||
| 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 (°F) | 82 | 80 | 80 | 77 | 69 | 65 | 63 | 62 | 60 | 59 | 59 | 57 | 57 | 56 | 55 | 57 | 62 | 66 | 74 | 78 | 80 | 82 | 82 | 82 |
| Dewpoint (°F) | 59 | 57 | 58 | 60 | 57 | 57 | 56 | 55 | 53 | 53 | 52 | 50 | 49 | 47 | 47 | 48 | 51 | 51 | 56 | 57 | 57 | 59 | 59 | 60 |
| Heat Index (°F) | 82 | 80 | 81 | 77 | 78 | 80 | 82 | 82 | 82 | |||||||||||||||
| Surface Wind (mph) | 3 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 2 | 3 | 3 | 5 | 3 | 3 |
| Wind Dir | WSW | WSW | WSW | SW | SSE | ESE | ESE | E | E | E | E | E | E | E | E | E | N | WSW | WSW | WSW | WSW | WSW | WSW | WSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 0 | 3 | 4 | 5 | 2 | 1 | 1 | 1 | 2 | 10 | 10 | 2 | 1 | 1 | 1 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 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 (%) | 45 | 45 | 47 | 55 | 66 | 75 | 78 | 79 | 79 | 79 | 78 | 78 | 75 | 73 | 75 | 72 | 68 | 59 | 54 | 48 | 46 | 45 | 45 | 47 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/11 | |||||||||||||||||||||||
| 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 (°F) | 82 | 83 | 81 | 78 | 73 | 66 | 64 | 62 | 60 | 59 | 59 | 57 | 57 | 57 | 56 | 58 | 64 | 71 | 78 | 84 | 87 | 88 | 88 | 88 |
| Dewpoint (°F) | 59 | 60 | 58 | 60 | 61 | 58 | 57 | 56 | 53 | 52 | 51 | 48 | 47 | 46 | 46 | 46 | 49 | 51 | 52 | 51 | 52 | 53 | 54 | 53 |
| Heat Index (°F) | 82 | 83 | 81 | 78 | 78 | 82 | 85 | 86 | 86 | 86 | ||||||||||||||
| Surface Wind (mph) | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 5 | 5 |
| Wind Dir | SW | SW | SW | SW | E | E | E | ENE | ENE | ENE | ENE | ENE | ENE | E | E | E | ENE | ENE | ENE | SW | SW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 1 | 6 | 6 | 6 | 12 | 12 | 12 | 17 | 17 | 17 | 16 | 16 | 16 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 15 | 15 |
| 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 (%) | 45 | 45 | 46 | 54 | 66 | 75 | 79 | 80 | 79 | 78 | 74 | 72 | 69 | 67 | 68 | 65 | 59 | 50 | 40 | 32 | 30 | 30 | 31 | 30 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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