Vacaville September Weather

Averages and records for weather in Vacaville, California in the month of September.
Typical Vacaville September Weather
1991–2020
Average daily high 90.2 °F
Average daily low 56.1 °F
Average monthly precipitation 0.1 inches
Daily chance of precipitation 2.3%
Vacaville September Weather Records
1893–2024
Highest temperature 115 °F September 6, 2022
Lowest temperature 32 °F September 19, 1926
Highest daily low 76 °F September 28, 1966
Lowest daily high 62 °F September 25, 1909
Hottest average high temperature 95.7 °F 1991
Coldest average high temperature 80.5 °F 1925
Most daily precipitation 3.7 inches September 18, 1959
Most monthly precipitation 5.1 inches 1904
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
September 1 92.3 57.6 112 42
September 2 92.1 57.4 112 40
September 3 91.9 57.3 112 42
September 4 91.8 57.2 109 39
September 5 91.7 57.1 115 40
September 6 91.7 57.0 115 43
September 7 91.6 56.9 112 42
September 8 91.4 56.8 111 41
September 9 91.3 56.7 112 40
September 10 91.2 56.6 110 41
September 11 91.0 56.6 107 39
September 12 90.8 56.4 105 39
September 13 90.7 56.3 109 36
September 14 90.5 56.2 105 38
September 15 90.4 56.1 108 38
September 16 90.1 56.0 105 39
September 17 89.8 55.9 105 40
September 18 89.5 55.7 104 41
September 19 89.2 55.5 104 32
September 20 88.7 55.3 105 40
September 21 88.3 55.0 107 35
September 22 88.0 54.8 108 40
September 23 87.8 54.6 107 40
September 24 87.6 54.4 108 36
September 25 87.3 54.3 103 36
September 26 87.0 54.2 107 40
September 27 86.6 54.0 104 37
September 28 86.4 53.7 104 36
September 29 86.2 53.6 104 36
September 30 86.1 53.4 105 34
Weather Station Details
Years Station Coordinates
1999–2024 Vacaville Nut Tree Airport location
1893–1998 Vacaville location