| Point Forecast: Union City CA 37.61N 122W (Elev. 594 ft) |
Last Update: 1:26 pm PDT Jul 15, 2025 |
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| Date | 07/15 | 07/16 | ||||||||||||||||||||||
| Hour (PDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°F) | 58 | 57 | 55 | 56 | 55 | 55 | 55 | 55 | 54 | 54 | 55 | 57 | 59 | 62 | 66 | 69 | 70 | 71 | 70 | 69 | 68 | 64 | 61 | 58 |
| Dewpoint (°F) | 53 | 54 | 54 | 54 | 53 | 53 | 53 | 53 | 53 | 53 | 53 | 54 | 55 | 56 | 58 | 58 | 58 | 58 | 58 | 57 | 57 | 55 | 55 | 54 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 9 | 9 | 9 | 8 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 9 | 10 | 10 | 11 | 11 | 11 | 11 | 10 | 10 |
| Wind Dir | WNW | WNW | WNW | WNW | WNW | W | W | W | W | WSW | WSW | WSW | WSW | WSW | W | W | WNW | WNW | WNW | WNW | WNW | WNW | W | W |
| Gust | 18 | 18 | 20 | 20 | 18 | |||||||||||||||||||
| Sky Cover (%) | 17 | 21 | 34 | 42 | 55 | 64 | 65 | 70 | 71 | 75 | 67 | 46 | 26 | 14 | 7 | 4 | 1 | 1 | 2 | 3 | 3 | 3 | 6 | 18 |
| Precipitation Potential (%) | 4 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 |
| Relative Humidity (%) | 85 | 88 | 94 | 93 | 94 | 91 | 92 | 93 | 95 | 95 | 95 | 91 | 86 | 79 | 74 | 68 | 66 | 64 | 64 | 64 | 69 | 75 | 80 | 86 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 07/17 | |||||||||||||||||||||||
| Hour (PDT) | 22 | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| Temperature (°F) | 57 | 56 | 56 | 55 | 55 | 55 | 55 | 55 | 54 | 54 | 55 | 57 | 61 | 64 | 68 | 71 | 73 | 74 | 73 | 71 | 68 | 65 | 62 | 60 |
| Dewpoint (°F) | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 54 | 53 | 53 | 53 | 54 | 56 | 58 | 59 | 59 | 59 | 59 | 58 | 58 | 57 | 56 | 55 | 55 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 10 | 8 | 8 | 8 | 5 | 5 | 5 | 2 | 2 | 2 | 3 | 3 | 3 | 6 | 6 | 6 | 10 | 10 | 10 | 11 | 11 | 11 | 9 | 9 |
| Wind Dir | W | W | W | W | W | W | W | W | W | W | SW | SW | SW | W | W | W | W | W | W | W | W | W | W | W |
| Gust | 20 | 20 | 20 | |||||||||||||||||||||
| Sky Cover (%) | 25 | 32 | 32 | 32 | 67 | 67 | 67 | 84 | 84 | 84 | 72 | 72 | 72 | 12 | 12 | 12 | 1 | 1 | 1 | 2 | 2 | 2 | 7 | 7 |
| Precipitation Potential (%) | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 89 | 91 | 93 | 94 | 95 | 95 | 95 | 95 | 96 | 96 | 95 | 91 | 85 | 78 | 72 | 66 | 62 | 60 | 60 | 62 | 66 | 72 | 78 | 82 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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