| Oak Opening 044717 Sierra Foothills 3240' | September | October | November |
| Minimum Humidity | |||
| Mean monthly minimum RH% | 30 | 33 | 37 |
| Days 1-10 mean minimum RH% | 28 | 31 | 34 |
| Days 10-20 mean minimum RH% | 30 | 30 | 39 |
| Days 20-30 mean minimum RH% | 33 | 37 | 39 |
| Days 1-10 lowest mean minimum RH% | 16 | 16 | 19 |
| Days 10-20 lowest mean minimum RH% | 14 | 13 | 27 |
| Days 20-30 lowest mean minimum RH% | 19 | 17 | 24 |
| Days 1-10 highest mean minimum RH% | 46 | 57 | 55 |
| Days 10-20 highest mean minimum RH% | 43 | 50 | 63 |
| Days 20-30 highest mean minimum RH% | 55 | 58 | 56 |
| Maximum Humidity | |||
| Mean monthly maximum RH% | 63 | 66 | 79 |
| Days 1-10 mean maximum RH% | 59 | 64 | 73 |
| Day 10-20 mean maximum RH% | 63 | 62 | 82 |
| Days 20-30 mean maximum RH% | 67 | 72 | 82 |
| Days 1-10 lowest mean maximum RH% | 35 | 42 | 56 |
| Days 10-20 lowest mean maximum RH% | 37 | 30 | 58 |
| Days 20-30 lowest mean maximum RH% | 39 | 43 | 41 |
| Days 1-10 highest mean maximum RH% | 93 | 100 | 96 |
| Days 10-20 highest mean maximum RH% | 89 | 100 | 100 |
| Days 20-30 highest mean maximum RH% | 100 | 100 | 97 |
| Maximum temperatures | |||
| Mean monthly maximum temperature | 84 | 76 | 66 |
| Days 1-10 mean maximum temperature | 88 | 80 | 69 |
| Days 10-20 mean maximum temperature | 84 | 76 | 65 |
| Days 20-30 mean maximum temperature | 82 | 72 | 64 |
| Days 1-10 lowest mean maximum temperature | 70 | 71 | 60 |
| Days 10-20 lowest mean maximum temperature | 72 | 60 | 58 |
| Days 20-30 lowest mean maximum temperature | 72 | 62 | 57 |
| Ddays 1-10 highest mean maximum temperature | 93 | 90 | 76 |
| Days 10-20 highest mean maximum temperature | 95 | 87 | 74 |
| Days 20-30 highest mean maximum temperature | 91 | 81 | 72 |
| Highest daily maximum temperature | 102 | 97 | 89 |
| Lowest daily maximum temperature | 52 | 50 | 40 |
| Mimimum temperatures | |||
| Mean monthly minimum temperature | 61 | 54 | 44 |
| Days 1-10 mean minimum temperature | 63 | 57 | 46 |
| Days 10-20 mean minimum temperature | 60 | 54 | 44 |
| Days 20-30 mean minimum temperature | 59 | 51 | 42 |
| Days 1-10 lowest mean minimum temperature | 49 | 50 | 39 |
| Days 10-20 lowest mean minimum temperature | 48 | 43 | 38 |
| Days 20-30 lowest mean minimum temperature | 48 | 39 | 38 |
| Days 1-10 highest mean minimum temperature | 70 | 69 | 53 |
| Days 10-20 highest mean minimum temperature | 68 | 66 | 52 |
| Days 20-30 highest mean minimum temperature | 69 | 62 | 51 |
| Highest daily minimum temperature | 84 | 77 | 64 |
| Lowest daily minimum temperature | 41 | 30 | 16 |
| 1300P Wind Speed | |||
| Days 1-10 mean wind speed | 7.1 | 6.8 | 5.3 |
| Days 10-20 mean wind speed | 7.2 | 6.5 | 4.1 |
| Days 20-30 mean wind speed | 6.4 | 5.9 | 3.3 |
| Days 1-10 max average wind speed | 9.4 | 9 | 7.7 |
| Days 10-20 max average wind speed | 9.7 | 8.6 | 8 |
| Days 20-30 max average wind speed | 8.9 | 7.9 | 5 |
| Period of Record: 23 years | |||