As of 14:34 PDT

South Monrovia Island, CA weather in September

97°

South Monrovia Island, Sunday, 9 August, 14:34

Clear. Feels like 102°. High 97°, low 71°.

Pressure29.83 inHg

Wind5 mph SW

Humidity39%

Visibility6.2 mi

Dew point68°

See detailed hourly forecast

In September, South Monrovia Island, CA averages a high of 87.6° and a low of 63.2°. About 0.4 inches of precipitation fall over the month (1 wet days). The record high is 116.2° (2024) and the record low 48° (1982). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	90.7°	65.3°	3%	106.7° (2002)	55.9° (1973)
2	91.2°	66°	5%	108.7° (1982)	53.6° (1964)
3	91.2°	66.4°	5%	110.8° (1988)	56.5° (2000)
4	91.9°	66.4°	2%	110.5° (1988)	56.5° (1999)
5	91.6°	66.6°	3%	112.8° (2020)	56.8° (2015)
6	91.6°	66.2°	3%	116.2° (2024)	57° (1987)
7	91°	65.7°	2%	105.4° (2024)	54° (1964)
8	90.1°	65.3°	0%	109.6° (2024)	52.3° (1965)
9	89.1°	65.1°	3%	107.4° (2024)	53.6° (1961)
10	87.4°	64.6°	7%	104.2° (1983)	53.4° (2010)
11	87.1°	63.5°	5%	107.2° (1983)	53.6° (1991)
12	86.5°	63°	2%	109.8° (1971)	51.8° (1972)
13	85.8°	62.8°	3%	112.3° (1971)	52.7° (1966)
14	86.2°	62.1°	3%	103.6° (2014)	52.5° (1970)
15	86.2°	62.2°	3%	105.6° (1979)	52° (1986)
16	85.8°	62.6°	3%	105.8° (2014)	53.4° (1986)
17	85.5°	61.9°	2%	100° (1984)	54° (1977)
18	84.9°	61.9°	3%	103.3° (1984)	51.8° (1993)
19	84.6°	61.5°	5%	104.2° (1984)	52° (1978)
20	84°	61.2°	7%	101.8° (2015)	51.4° (1965)
21	85.5°	61°	0%	102° (2021)	51.1° (1986)
22	86.7°	61.3°	3%	101.3° (1975)	51.4° (1986)
23	87.8°	61.7°	3%	103.1° (1975)	52.3° (1961)
24	87.6°	61.9°	3%	105.1° (1978)	53.1° (1998)
25	86.9°	62.1°	5%	105.3° (1978)	51.4° (2005)
26	85.8°	62.4°	7%	105.3° (1963)	53.6° (1986)
27	86.2°	61.7°	0%	109.6° (2010)	52° (1986)
28	86.2°	61.9°	3%	107.6° (1963)	51.3° (1971)
29	85.8°	61.9°	5%	104.5° (1963)	49.5° (1971)
30	86.5°	61°	3%	107.1° (2020)	48° (1982)