| Point Forecast: 2 Miles SW Union City CA 37.58N 122.04W (Elev. 37 m) |
Last Update: 2:47 pm PDT Jun 30, 2025 |
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| Date | 06/30 | 07/01 | ||||||||||||||||||||||
| Hour (PDT) | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| Temperature (°C) | 17 | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 17 | 19 | 22 | 23 | 24 | 26 | 25 | 24 | 23 | 22 | 20 | 18 |
| Dewpoint (°C) | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 15 | 14 | 14 | 14 | 13 | 13 | 13 |
| Heat Index (°C) | 24 | 26 | 25 | 24 | ||||||||||||||||||||
| Surface Wind (mph) | 8 | 7 | 7 | 6 | 6 | 5 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 6 | 7 | 9 | 10 | 11 | 11 | 11 | 11 | 11 | 9 |
| Wind Dir | NNW | NNW | NW | NW | NW | NW | NW | NNW | NW | NW | NW | NW | WNW | WNW | WNW | WNW | WNW | WNW | NW | NW | NW | NW | NW | WNW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 16 | 21 | 23 | 39 | 44 | 51 | 50 | 55 | 59 | 66 | 65 | 57 | 48 | 19 | 13 | 9 | 6 | 3 | 3 | 3 | 3 | 4 | 4 | 8 |
| Precipitation Potential (%) | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 7 | 7 | 7 | 7 |
| Relative Humidity (%) | 77 | 82 | 83 | 83 | 86 | 87 | 86 | 87 | 87 | 87 | 87 | 84 | 79 | 72 | 64 | 58 | 54 | 52 | 53 | 54 | 58 | 61 | 66 | 73 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/02 | |||||||||||||||||||||||
| Hour (PDT) | 21 | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 |
| Temperature (°C) | 17 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 16 | 18 | 19 | 21 | 22 | 23 | 24 | 24 | 23 | 23 | 21 | 19 | 18 |
| Dewpoint (°C) | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 15 | 16 | 16 | 16 | 16 | 16 | 14 | 14 | 13 |
| Heat Index (°C) | 24 | 24 | ||||||||||||||||||||||
| Surface Wind (mph) | 9 | 9 | 8 | 8 | 8 | 6 | 6 | 6 | 3 | 3 | 3 | 3 | 3 | 3 | 6 | 6 | 6 | 10 | 10 | 10 | 13 | 13 | 13 | 10 |
| Wind Dir | WNW | WNW | W | W | W | W | W | W | W | W | W | SW | SW | SW | W | W | W | W | W | W | W | W | W | WSW |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 16 | 22 | 27 | 27 | 27 | 48 | 48 | 48 | 53 | 53 | 53 | 47 | 47 | 47 | 18 | 18 | 18 | 2 | 2 | 2 | 2 | 2 | 2 | 9 |
| Precipitation Potential (%) | 7 | 7 | 5 | 5 | 5 | 5 | 5 | 5 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 81 | 83 | 82 | 84 | 85 | 86 | 87 | 87 | 87 | 87 | 85 | 83 | 79 | 73 | 68 | 64 | 61 | 59 | 59 | 61 | 64 | 67 | 70 | 74 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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