| Point Forecast: 11 Miles SSW Lake San Antonio CA 35.71N 121.07W (Elev. 400 m) |
Last Update: 1:18 pm PDT Jul 18, 2026 |
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| Date | 07/18 | 07/19 | ||||||||||||||||||||||
| Hour (PDT) | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| Temperature (°C) | 21 | 20 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 19 | 21 | 22 | 27 | 29 | 30 | 31 | 29 | 29 | 28 | 26 | 24 | 22 |
| Dewpoint (°C) | 1 | 4 | 4 | 5 | 6 | 6 | 6 | 6 | 6 | 7 | 7 | 10 | 11 | 11 | 14 | 13 | 13 | 12 | 10 | 9 | 8 | 6 | 4 | 3 |
| Heat Index (°C) | 27 | 28 | 29 | 29 | 28 | 28 | 27 | 26 | 24 | |||||||||||||||
| Surface Wind (mph) | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | 6 | 6 | 6 | 9 | 9 | 9 | 7 | 7 | 7 |
| Wind Dir | WNW | WNW | WNW | NW | NW | NW | NNW | NNW | NNW | NNW | NNW | NNW | SSW | SSW | SSW | SSW | SSW | SSW | SW | SW | SW | WSW | WSW | WSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 16 | 16 | 16 | 42 | 42 | 42 | 42 | 42 | 42 | 37 | 37 | 37 | 37 | 37 | 37 | 24 | 24 | 24 | 24 | 24 | 24 | 48 | 48 | 48 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |
| Relative Humidity (%) | 27 | 34 | 40 | 41 | 45 | 47 | 48 | 49 | 50 | 52 | 55 | 58 | 55 | 52 | 48 | 41 | 37 | 34 | 32 | 30 | 29 | 28 | 28 | 28 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/20 | |||||||||||||||||||||||
| Hour (PDT) | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 |
| Temperature (°C) | 19 | 18 | 19 | 19 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 19 | 23 | 26 | 28 | 24 | 32 | 29 | 29 | 28 | 25 | 25 | 26 | 26 |
| Dewpoint (°C) | 1 | 3 | 6 | 7 | 7 | 8 | 8 | 8 | 7 | 8 | 8 | 11 | 13 | 15 | 15 | 10 | 14 | 11 | 11 | 8 | 5 | 4 | 4 | 5 |
| Heat Index (°C) | 26 | 28 | 24 | 31 | 28 | 28 | 27 | 25 | 25 | 26 | 26 | |||||||||||||
| Surface Wind (mph) | 5 | 5 | 5 | 3 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 5 | 5 | 5 | 6 | 6 | 6 | 8 | 8 | 8 |
| Wind Dir | W | W | W | W | W | W | NW | NW | NW | NW | NW | NW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | SW | SW | SW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 48 | 48 | 48 | 38 | 38 | 38 | 38 | 38 | 38 | 30 | 30 | 30 | 30 | 30 | 30 | 67 | 67 | 67 | 67 | 67 | 67 | 38 | 38 | 38 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |
| Relative Humidity (%) | 30 | 36 | 43 | 45 | 49 | 51 | 52 | 54 | 55 | 57 | 58 | 59 | 57 | 53 | 48 | 42 | 38 | 35 | 32 | 30 | 28 | 27 | 26 | 26 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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