As of 18:09 PDT

Fairfield, CA weather in September

88°

Fairfield, Saturday, 8 August, 18:09

Mostly clear. Feels like 88°. High 89°, low 62°.

Pressure29.83 inHg

Wind8 mph NW

Humidity44%

Visibility6.2 mi

Dew point63°

See detailed hourly forecast

In September, Fairfield, CA averages a high of 85° and a low of 57.9°. About 0.2 inches of precipitation fall over the month (1 wet days). The record high is 114.4° (2022) and the record low 45.1° (1971). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	88.3°	58.6°	3%	106.2° (2017)	52.9° (1970)
2	88.2°	58.8°	0%	105.3° (2017)	52.5° (1960)
3	88°	58.6°	0%	100° (1963)	50.2° (2000)
4	88.3°	58.5°	0%	104.7° (2022)	50.4° (2000)
5	88.5°	59°	0%	112.1° (2022)	52° (1965)
6	88°	59°	2%	114.4° (2022)	51.4° (1973)
7	88.2°	59.2°	0%	110.8° (2020)	52.5° (1978)
8	87.1°	59.2°	2%	107.6° (2022)	52.5° (1978)
9	85.6°	58.5°	5%	101.8° (2022)	52° (1964)
10	85.6°	57.4°	3%	102.2° (2015)	51.1° (1985)
11	86.4°	58.3°	0%	100.4° (1979)	49.3° (1985)
12	85.5°	58.1°	0%	104.4° (1979)	50° (1985)
13	84.6°	58.1°	0%	106.5° (1971)	50.2° (1986)
14	83.1°	57.4°	2%	107.4° (1971)	51.6° (1970)
15	82.4°	56.8°	2%	104.4° (1971)	50.4° (1992)
16	82.6°	56.7°	5%	96.3° (1984)	49.3° (2018)
17	83.1°	57.4°	7%	101.8° (1984)	51.6° (1961)
18	82.6°	58.3°	5%	101.7° (1984)	47.8° (2008)
19	83.3°	57.4°	5%	101.3° (2000)	48.7° (2008)
20	84.7°	57.7°	2%	98.1° (1990)	50.2° (1965)
21	84.9°	57.2°	3%	99.9° (1987)	50° (1960)
22	84°	56.8°	5%	99.5° (2009)	48.7° (2017)
23	84.9°	56.8°	0%	99.5° (2025)	50.4° (1988)
24	84.4°	58.1°	5%	100.2° (2019)	52° (2023)
25	83.3°	58.1°	10%	99.9° (2019)	48.6° (1986)
26	84°	57.7°	5%	99.3° (2009)	49.8° (1988)
27	83.1°	57.4°	7%	99.3° (2009)	45.9° (1986)
28	83.3°	57.9°	5%	100.6° (2020)	48° (1971)
29	82.8°	57.4°	2%	100.6° (1990)	46.2° (2019)
30	82.4°	57°	7%	99.5° (1970)	45.1° (1971)