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| Point Forecast: San Francisco International Airport CA 37.62N 122.37W (Elev. 1 m) |
Last Update: 4:01 am PDT Aug 1, 2021 |
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| Date | 08/01 | 08/02 | ||||||||||||||||||||||
| Hour (PDT) | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 |
| Temperature (°C) | 15 | 15 | 15 | 16 | 16 | 17 | 18 | 19 | 21 | 21 | 22 | 21 | 21 | 21 | 19 | 18 | 17 | 16 | 16 | 16 | 15 | 15 | 15 | 15 |
| Dewpoint (°C) | 12 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 9 | 11 | 14 | 17 | 18 | 20 | 20 | 18 | 17 | 16 | 14 | 11 | 9 | 9 | 8 | 8 | 7 |
| Wind Dir | W | W | W | W | WSW | W | NNW | NW | WNW | W | W | W | W | W | W | W | W | W | W | W | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 44 | 58 | 73 | 40 | 40 | 54 | 41 | 19 | 15 | 11 | 7 | 3 | 2 | 4 | 3 | 4 | 14 | 20 | 42 | 51 | 40 | 39 | 31 | 55 |
| 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 (%) | 84 | 84 | 83 | 82 | 78 | 74 | 70 | 66 | 64 | 60 | 56 | 58 | 58 | 60 | 63 | 68 | 72 | 78 | 80 | 80 | 82 | 81 | 80 | 81 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 08/03 | |||||||||||||||||||||||
| Hour (PDT) | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 00 | 01 | 02 | 03 |
| Temperature (°C) | 15 | 15 | 15 | 15 | 16 | 17 | 17 | 18 | 19 | 21 | 21 | 21 | 21 | 20 | 19 | 17 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 13 |
| Dewpoint (°C) | 12 | 12 | 12 | 12 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| Heat Index (°C) | ||||||||||||||||||||||||
| Surface Wind (mph) | 6 | 6 | 6 | 6 | 5 | 6 | 6 | 8 | 8 | 8 | 16 | 16 | 16 | 18 | 18 | 18 | 17 | 17 | 17 | 9 | 9 | 9 | 9 | 9 |
| Wind Dir | WSW | WSW | WSW | W | W | W | WNW | WNW | WNW | WNW | W | W | W | W | W | W | W | W | W | W | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 60 | 66 | 78 | 51 | 53 | 74 | 67 | 44 | 44 | 44 | 12 | 12 | 12 | 10 | 10 | 10 | 15 | 15 | 15 | 27 | 27 | 27 | 38 | 38 |
| 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 (%) | 82 | 81 | 81 | 80 | 76 | 73 | 70 | 66 | 61 | 58 | 55 | 54 | 54 | 56 | 60 | 66 | 72 | 76 | 79 | 81 | 82 | 82 | 82 | 83 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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