As of 02:11 PDT

Vacaville, CA weather in September

64°

Vacaville, Sunday, 9 August, 02:11

Clear. Feels like 64°. High 99°, low 63°.

Pressure29.80 inHg

Wind3 mph S

Humidity75%

Visibility6.2 mi

Dew point56°

See detailed hourly forecast

In September, Vacaville, CA averages a high of 86.2° and a low of 59°. About 0.2 inches of precipitation fall over the month (1 wet days). The record high is 117.1° (2022) and the record low 45.3° (1986). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	89.8°	59.9°	2%	108.7° (2017)	54° (1964)
2	89.8°	60.3°	0%	106.7° (2017)	53.1° (2021)
3	89.6°	59.9°	0%	101.8° (1988)	50.9° (2000)
4	90°	59.7°	0%	107.1° (2022)	51.4° (2000)
5	90°	60.4°	0%	114.6° (2022)	53.1° (1965)
6	89.4°	60.4°	2%	117.1° (2022)	52.7° (1973)
7	89.4°	60.4°	0%	112.5° (2020)	52.9° (2002)
8	88.5°	60.3°	2%	110.3° (2022)	53.6° (1964)
9	87.1°	59.7°	5%	105.4° (2022)	52.3° (1964)
10	86.9°	58.6°	3%	102.9° (2015)	50.7° (1985)
11	87.6°	59.4°	0%	101.7° (2015)	50.2° (1985)
12	86.9°	59.4°	0%	104.9° (1979)	50.7° (1985)
13	86°	59.4°	0%	107.1° (1971)	51.3° (1986)
14	84.6°	58.3°	2%	107.4° (1971)	51.4° (2018)
15	83.8°	57.7°	2%	104.7° (1971)	51.6° (1992)
16	83.8°	57.6°	5%	97.2° (1971)	48.4° (2018)
17	84.2°	58.3°	7%	102.2° (1984)	52.2° (1961)
18	83.7°	59.4°	5%	101.8° (1984)	48.9° (2008)
19	84.2°	58.3°	5%	102.4° (2000)	50.2° (2008)
20	85.8°	59°	0%	99.1° (2003)	50.4° (1965)
21	85.8°	58.3°	2%	101.5° (1987)	51.4° (1960)
22	85.1°	57.9°	5%	100.6° (2009)	49.3° (2017)
23	85.6°	57.9°	0%	99.7° (2025)	51.8° (1988)
24	85.1°	59.2°	3%	100.4° (2019)	51.6° (2023)
25	84.2°	59°	10%	99.9° (2019)	49.5° (1986)
26	85.1°	58.6°	5%	100.8° (2009)	50.5° (1988)
27	84°	58.6°	7%	100.4° (2009)	45.3° (1986)
28	84.2°	58.6°	5%	101.3° (2010)	48° (1986)
29	83.7°	58.1°	2%	101.5° (2010)	46.8° (2019)
30	83.3°	58.1°	5%	103.1° (2020)	45.7° (1971)