As of 07:40 PDT

Aliso Viejo, CA weather in September

70°

Aliso Viejo, Sunday, 9 August, 07:40

Mostly clear. Feels like 71°. High 94°, low 70°.

Pressure29.88 inHg

Wind2 mph N

Humidity92%

Visibility6.2 mi

Dew point67°

See detailed hourly forecast

In September, Aliso Viejo, CA averages a high of 78.7° and a low of 63.6°. About 0.3 inches of precipitation fall over the month (1 wet days). The record high is 104.5° (1988) and the record low 52.7° (1965). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	80.6°	65.3°	2%	95.7° (1998)	57.7° (1973)
2	81°	65.7°	3%	93.9° (1982)	59.4° (1999)
3	81.1°	65.7°	5%	98.8° (1988)	57.7° (1973)
4	82°	65.7°	3%	104.5° (1988)	58.3° (1999)
5	81.7°	65.8°	3%	97° (1988)	56.8° (1973)
6	81.7°	65.7°	2%	97° (2020)	58.6° (1970)
7	81°	65.7°	0%	94.3° (2024)	57.6° (1980)
8	80.4°	65.3°	0%	99.3° (2024)	56.8° (1980)
9	79.5°	65.1°	7%	94.5° (2015)	57° (1962)
10	78.4°	64°	5%	92.5° (1983)	57.4° (1975)
11	78.1°	63.7°	8%	93.6° (1983)	56.5° (1975)
12	77.5°	63.3°	0%	96.1° (1971)	55.2° (1972)
13	77°	63.3°	0%	97° (1971)	57.7° (1986)
14	77.5°	62.6°	2%	93.9° (2014)	56.5° (1973)
15	77.5°	62.8°	3%	94.8° (1979)	56.5° (1986)
16	77.5°	63.1°	3%	95° (2014)	56.3° (1986)
17	77.2°	63.1°	3%	90.9° (2014)	56.7° (2024)
18	77°	62.6°	7%	91.8° (1984)	55.8° (1993)
19	76.5°	62.4°	3%	91.9° (1984)	54° (1978)
20	76.1°	62.2°	8%	90.1° (2015)	56.7° (1999)
21	77.2°	61.9°	2%	88.2° (1972)	55.2° (1986)
22	78.6°	62.4°	2%	90.7° (1975)	56.5° (1986)
23	79.2°	62.4°	2%	98.1° (1975)	55.6° (2010)
24	79°	62.8°	7%	98.8° (1978)	56.1° (2023)
25	78.4°	62.6°	5%	96.3° (1963)	55.8° (1988)
26	77.9°	63°	3%	103.1° (1963)	55.8° (1986)
27	77.9°	62.6°	0%	97.5° (2010)	54.7° (2023)
28	77.9°	62.4°	3%	97.9° (1963)	56.1° (1962)
29	77.7°	62.6°	5%	95.7° (1999)	52.7° (1965)
30	78.3°	62.2°	3%	95.9° (2020)	54° (2019)