As of 20:51 PDT

Vallejo, CA weather in September

64°

Vallejo, Saturday, 8 August, 20:51

Clear. Feels like 63°. High 89°, low 61°.

Pressure29.85 inHg

Wind5 mph SW

Humidity70%

Visibility6.2 mi

Dew point55°

See detailed hourly forecast

In September, Vallejo, CA averages a high of 81.7° and a low of 56.4°. About 0.2 inches of precipitation fall over the month (1 wet days). The record high is 108.1° (1971) and the record low 46.9° (2008). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	84.6°	57°	2%	102° (2017)	51.4° (1970)
2	84°	57.2°	2%	102.2° (2017)	51.8° (1960)
3	83.5°	56.8°	0%	97.9° (1963)	49.3° (2000)
4	83.8°	56.7°	0%	97.9° (2008)	50.2° (2000)
5	84.6°	57°	0%	105.6° (2022)	50.9° (2012)
6	84°	56.8°	2%	106.9° (2022)	50.9° (1973)
7	84.7°	57.4°	0%	104.5° (2020)	51.6° (1960)
8	83.5°	57.2°	2%	101.1° (2020)	51.3° (2002)
9	81.3°	56.8°	7%	100° (2015)	50.5° (1965)
10	81.7°	55.9°	3%	99° (2015)	50.5° (1985)
11	82.9°	56.8°	0%	100.9° (1979)	50° (1985)
12	81.7°	56.5°	0%	104° (1979)	49.6° (1966)
13	80.8°	56.5°	0%	105.6° (1971)	49.1° (1970)
14	79°	56.1°	2%	108.1° (1971)	50° (1970)
15	79°	55.6°	0%	104.2° (1971)	48.4° (1992)
16	79.5°	55.6°	8%	95.5° (1984)	50.5° (1970)
17	80.2°	56.3°	7%	101.7° (1984)	50.5° (1980)
18	80.1°	56.8°	3%	100.9° (1984)	46.9° (2008)
19	80.6°	55.9°	8%	98.8° (2000)	47.5° (2008)
20	81.9°	55.9°	3%	98.4° (1990)	48.4° (1968)
21	81.9°	55.6°	3%	97° (2015)	50° (1986)
22	81°	55.4°	3%	97.9° (2003)	49.8° (2012)
23	81.9°	55.2°	2%	97.9° (1964)	48.9° (1993)
24	81.5°	56.5°	7%	98.4° (1964)	50.4° (1988)
25	80.8°	56.5°	10%	95.5° (1963)	48.7° (1972)
26	81.1°	56.5°	3%	98.2° (1963)	48.6° (1988)
27	80.6°	56.1°	7%	97.3° (2010)	46.9° (1986)
28	80.8°	56.5°	5%	99.5° (2010)	48.2° (1971)
29	79.9°	55.9°	2%	98.1° (1990)	48.4° (2019)
30	79.7°	55.6°	5%	97.3° (1970)	46.9° (1971)