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| Point Forecast: 3 Miles WSW San Ramon CA 37.75N 122W (Elev. 1362 ft) |
Last Update: 4:02 am PDT May 15, 2021 |
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| Date | 05/15 | 05/16 | ||||||||||||||||||||||
| 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 (°F) | 48 | 48 | 49 | 48 | 48 | 48 | 49 | 52 | 55 | 58 | 60 | 61 | 62 | 62 | 60 | 58 | 56 | 53 | 51 | 50 | 50 | 49 | 49 | 49 |
| Dewpoint (°F) | 45 | 46 | 45 | 45 | 46 | 46 | 46 | 47 | 47 | 48 | 49 | 49 | 49 | 49 | 49 | 48 | 48 | 47 | 48 | 47 | 48 | 48 | 47 | 47 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 23 | 20 | 17 | 16 | 15 | 15 | 14 | 11 | 10 | 9 | 10 | 10 | 14 | 15 | 16 | 14 | 13 | 14 | 15 | 15 | 15 | 15 | 16 | 16 |
| Wind Dir | SW | SW | SW | SW | SW | SW | SW | WSW | WSW | WSW | WSW | W | W | W | W | W | W | W | W | WSW | WSW | WSW | WSW | WSW |
| Gust | 30 | 25 | 23 | 22 | 20 | 20 | 18 | 21 | 18 | 20 | 20 | 20 | 20 | 21 | 21 | |||||||||
| Sky Cover (%) | 90 | 89 | 88 | 89 | 84 | 83 | 75 | 60 | 35 | 24 | 15 | 13 | 8 | 10 | 17 | 21 | 21 | 31 | 39 | 48 | 49 | 56 | 67 | 61 |
| Precipitation Potential (%) | 6 | 14 | 14 | 14 | 14 | 14 | 14 | 1 | 1 | 1 | 1 | 1 | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 8 | 8 | 8 | 8 | 8 |
| Relative Humidity (%) | 88 | 92 | 89 | 89 | 92 | 93 | 90 | 82 | 75 | 69 | 65 | 63 | 61 | 61 | 66 | 70 | 76 | 80 | 88 | 90 | 91 | 94 | 93 | 93 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Date | 05/17 | |||||||||||||||||||||||
| 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 (°F) | 48 | 48 | 48 | 49 | 50 | 52 | 55 | 58 | 61 | 63 | 64 | 64 | 64 | 62 | 60 | 58 | 56 | 54 | 53 | 52 | 51 | 51 | 51 | 51 |
| Dewpoint (°F) | 47 | 47 | 47 | 47 | 48 | 48 | 49 | 49 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 49 | 49 | 49 | 49 | 49 | 49 | 49 | 49 |
| Heat Index (°F) | ||||||||||||||||||||||||
| Surface Wind (mph) | 16 | 16 | 15 | 14 | 13 | 11 | 13 | 14 | 14 | 14 | 17 | 17 | 17 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 |
| Wind Dir | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | W | W | W | W | W | W | W | W | W | WSW | WSW | WSW | WSW | WSW |
| Gust | 21 | 21 | 18 | 18 | 18 | 18 | 18 | 22 | 22 | 22 | 24 | 24 | 24 | 22 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | |||
| Sky Cover (%) | 67 | 70 | 65 | 71 | 49 | 32 | 23 | 13 | 13 | 13 | 5 | 5 | 5 | 8 | 8 | 8 | 22 | 22 | 22 | 36 | 36 | 36 | 60 | 60 |
| Precipitation Potential (%) | 8 | 3 | 3 | 3 | 3 | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| Relative Humidity (%) | 94 | 94 | 96 | 94 | 93 | 88 | 80 | 72 | 66 | 62 | 60 | 60 | 62 | 65 | 69 | 73 | 77 | 82 | 86 | 89 | 91 | 91 | 92 | 92 |
| Rain | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Thunder | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
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