| Point Forecast: Antioch CA 38N 121.81W (Elev. 36 ft) |
Last Update: 11:27 am PDT Aug 9, 2026 |
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| Date | 08/09 | 08/10 | ||||||||||||||||||||||
| Hour (PDT) | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 |
| Temperature (°F) | 88 | 92 | 95 | 99 | 99 | 99 | 97 | 94 | 89 | 84 | 81 | 79 | 78 | 76 | 74 | 72 | 70 | 69 | 68 | 68 | 70 | 73 | 78 | 82 |
| Dewpoint (°F) | 62 | 61 | 61 | 61 | 59 | 58 | 58 | 55 | 53 | 52 | 52 | 52 | 53 | 53 | 54 | 54 | 54 | 54 | 54 | 55 | 56 | 56 | 58 | 59 |
| Heat Index (°F) | 89 | 92 | 96 | 100 | 99 | 98 | 96 | 92 | 87 | 83 | 80 | 79 | 78 | 76 | 78 | 82 | ||||||||
| Surface Wind (mph) | 6 | 7 | 8 | 9 | 10 | 11 | 10 | 9 | 9 | 8 | 8 | 8 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 7 | 7 |
| Wind Dir | WNW | WNW | WNW | W | W | W | W | WSW | W | W | W | W | W | W | WNW | WNW | W | W | W | WNW | WNW | WNW | WNW | WNW |
| Gust | 18 | 20 | 18 | |||||||||||||||||||||
| Sky Cover (%) | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 4 | 2 | 1 | 0 | 1 | 3 | 15 | 20 | 17 | 12 | 18 | 10 | 7 | 10 |
| 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 (%) | 41 | 36 | 32 | 29 | 27 | 26 | 27 | 27 | 29 | 33 | 37 | 40 | 42 | 45 | 49 | 54 | 57 | 59 | 61 | 64 | 61 | 55 | 49 | 46 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/11 | |||||||||||||||||||||||
| Hour (PDT) | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 |
| Temperature (°F) | 84 | 88 | 90 | 92 | 92 | 91 | 89 | 87 | 81 | 77 | 75 | 74 | 73 | 72 | 70 | 68 | 67 | 66 | 65 | 66 | 67 | 70 | 74 | 78 |
| Dewpoint (°F) | 59 | 60 | 59 | 59 | 59 | 59 | 59 | 58 | 56 | 55 | 55 | 55 | 55 | 56 | 56 | 56 | 56 | 56 | 56 | 56 | 57 | 58 | 60 | 60 |
| Heat Index (°F) | 84 | 88 | 90 | 91 | 92 | 91 | 89 | 86 | 81 | 77 | 75 | 78 | ||||||||||||
| Surface Wind (mph) | 8 | 9 | 11 | 11 | 13 | 11 | 11 | 11 | 8 | 8 | 8 | 6 | 6 | 6 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 7 |
| Wind Dir | WNW | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W |
| Gust | 18 | 21 | 21 | 22 | 22 | 22 | 18 | 18 | 18 | |||||||||||||||
| Sky Cover (%) | 6 | 8 | 7 | 9 | 9 | 6 | 12 | 15 | 12 | 7 | 3 | 1 | 1 | 1 | 2 | 2 | 2 | 6 | 6 | 6 | 8 | 8 | 8 | 5 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Relative Humidity (%) | 42 | 38 | 35 | 34 | 33 | 33 | 36 | 37 | 41 | 46 | 50 | 52 | 54 | 56 | 60 | 65 | 69 | 70 | 71 | 72 | 70 | 66 | 60 | 54 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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