| Point Forecast: 4 Miles NE Grass Valley CA 39.26N 121.02W (Elev. 789 m) |
Last Update: 10:21 am PDT Jul 15, 2025 |
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| Date | 07/15 | 07/16 | ||||||||||||||||||||||
| Hour (PDT) | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 |
| Temperature (°C) | 30 | 31 | 32 | 32 | 32 | 32 | 31 | 30 | 29 | 26 | 23 | 21 | 20 | 19 | 18 | 18 | 17 | 17 | 17 | 16 | 17 | 21 | 24 | 26 |
| Dewpoint (°C) | 11 | 11 | 12 | 12 | 12 | 12 | 11 | 12 | 12 | 13 | 12 | 12 | 11 | 12 | 11 | 10 | 10 | 10 | 9 | 8 | 9 | 11 | 13 | 13 |
| Heat Index (°C) | 29 | 30 | 31 | 31 | 31 | 31 | 30 | 29 | 28 | 26 | 24 | 26 | ||||||||||||
| Surface Wind (mph) | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Wind Dir | S | SSW | SSW | SSW | SSW | SSW | SSW | SSW | SSW | S | SSE | SE | ESE | ESE | ESE | E | E | E | E | E | E | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 1 | 0 | 0 | 2 | 2 | 0 | 0 | 0 | 1 | 2 | 1 | 2 | 3 | 2 | 3 | 3 | 4 | 3 | 4 | 4 | 4 | 0 | 0 | 0 |
| 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 (%) | 30 | 29 | 29 | 29 | 30 | 29 | 29 | 32 | 35 | 43 | 50 | 55 | 57 | 60 | 60 | 61 | 62 | 62 | 59 | 61 | 59 | 54 | 49 | 45 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/17 | |||||||||||||||||||||||
| Hour (PDT) | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 |
| Temperature (°C) | 27 | 28 | 29 | 29 | 30 | 29 | 29 | 28 | 26 | 24 | 22 | 21 | 19 | 18 | 17 | 17 | 16 | 16 | 16 | 17 | 19 | 21 | 23 | 25 |
| Dewpoint (°C) | 13 | 13 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 12 | 12 | 13 | 13 | 14 |
| Heat Index (°C) | 27 | 28 | 28 | 29 | 29 | 29 | 28 | 27 | 27 | 24 | 25 | |||||||||||||
| Surface Wind (mph) | 5 | 5 | 5 | 6 | 6 | 6 | 5 | 5 | 5 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
| Wind Dir | WSW | WSW | WSW | WSW | WSW | WSW | SW | SW | SW | SW | SW | SW | ESE | ESE | ESE | E | E | E | N | N | N | S | S | S |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 4 | 4 | 4 | 3 | 3 | 3 | 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 (%) | 43 | 41 | 40 | 39 | 37 | 36 | 37 | 40 | 45 | 50 | 56 | 61 | 66 | 69 | 70 | 71 | 72 | 73 | 72 | 70 | 67 | 62 | 56 | 49 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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