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| Point Forecast: San Francisco International Airport CA 37.62N 122.37W (Elev. 3 ft) |
Last Update: 8:59 pm PDT Jun 18, 2021 |
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| Date | 06/18 | 06/19 | ||||||||||||||||||||||
| Hour (PDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 62 | 62 | 61 | 61 | 60 | 60 | 59 | 60 | 61 | 64 | 66 | 70 | 73 | 76 | 78 | 79 | 78 | 77 | 75 | 73 | 70 | 66 | 64 | 62 |
| Dewpoint (°F) | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 52 | 51 | 52 | 54 | 55 | 55 | 56 | 56 | 55 | 55 | 54 | 53 | 52 | 50 | 50 | 50 |
| Heat Index (°F) | 76 | 78 | 80 | 78 | 77 | 75 | ||||||||||||||||||
| Surface Wind (mph) | 0 | 2 | 2 | 2 | 3 | 3 | 5 | 5 | 3 | 5 | 6 | 6 | 2 | 2 | 6 | 9 | 9 | 8 | 8 | 6 | 5 | 3 | 3 | 2 |
| Wind Dir | NW | N | N | N | N | NNW | NNW | NNW | NE | NE | NNE | NNE | NE | SSE | S | S | SSW | SSW | SSW | SW | WSW | WNW | NNW | N |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 9 | 8 | 8 | 10 | 9 | 9 | 10 | 10 | 1 | 0 | 6 | 4 | 3 | 3 | 3 | 4 | 4 | 3 | 2 | 3 | 1 | 7 | 6 | 11 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| Relative Humidity (%) | 68 | 71 | 71 | 74 | 74 | 74 | 75 | 75 | 74 | 63 | 61 | 57 | 54 | 49 | 45 | 45 | 46 | 46 | 48 | 49 | 53 | 58 | 61 | 63 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 06/20 | |||||||||||||||||||||||
| Hour (PDT) | 23 | 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 |
| Temperature (°F) | 61 | 60 | 60 | 59 | 58 | 58 | 58 | 58 | 60 | 62 | 65 | 68 | 71 | 74 | 76 | 77 | 76 | 75 | 73 | 70 | 67 | 65 | 63 | 62 |
| Dewpoint (°F) | 49 | 49 | 49 | 49 | 48 | 48 | 48 | 48 | 49 | 50 | 52 | 53 | 55 | 56 | 56 | 56 | 56 | 55 | 55 | 54 | 54 | 54 | 54 | 53 |
| Heat Index (°F) | 76 | 77 | 77 | 75 | ||||||||||||||||||||
| Surface Wind (mph) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 5 | 5 | 5 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 |
| Wind Dir | NNE | NNE | NNE | NNE | NNE | NNE | N | N | N | ENE | ENE | ENE | SW | SW | SW | WSW | WSW | WSW | W | W | W | W | W | W |
| Gust | ||||||||||||||||||||||||
| Sky Cover (%) | 16 | 16 | 16 | 23 | 23 | 23 | 26 | 26 | 26 | 7 | 7 | 7 | 8 | 8 | 8 | 6 | 6 | 6 | 10 | 10 | 10 | 18 | 18 | 18 |
| Precipitation Potential (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 10 | 10 | 10 | 10 | 10 |
| Relative Humidity (%) | 65 | 67 | 68 | 69 | 69 | 70 | 69 | 68 | 66 | 64 | 62 | 59 | 56 | 53 | 50 | 49 | 48 | 50 | 53 | 58 | 63 | 67 | 70 | 72 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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