As of 06:57 PDT

Rosemead, CA weather in September

69°

Rosemead, Sunday, 9 August, 06:57

Clear. Feels like 69°. High 99°, low 69°.

Pressure29.88 inHg

Wind2.2 mph S

Humidity89%

Visibility6.2 mi

Dew point65°

See detailed hourly forecast

In September, Rosemead, CA averages a high of 87.8° and a low of 63.4°. About 0.3 inches of precipitation fall over the month (1 wet days). The record high is 113.7° (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	90.9°	65.5°	3%	107.4° (2002)	56.5° (1973)
2	91.4°	66.2°	5%	109.2° (1982)	53.8° (1964)
3	91.4°	66.6°	5%	111.7° (1988)	57° (2000)
4	92.3°	66.6°	3%	111.4° (1988)	57° (1999)
5	91.8°	66.6°	3%	109.8° (2024)	57.2° (1970)
6	91.8°	66.4°	3%	113.7° (2024)	57° (1987)
7	91.2°	65.8°	2%	103.1° (2022)	54.5° (1964)
8	90.3°	65.7°	0%	108.3° (2024)	52.7° (1965)
9	89.2°	65.3°	3%	106° (2024)	54° (1961)
10	87.6°	64.6°	7%	104.5° (1983)	53.8° (2010)
11	87.3°	63.7°	5%	107.6° (1983)	53.6° (1985)
12	86.9°	63.1°	2%	110.7° (1971)	52° (1972)
13	85.8°	63°	3%	112.5° (1971)	52.9° (1966)
14	86.5°	62.2°	3%	103.5° (2014)	52.7° (1966)
15	86.4°	62.4°	3%	106.5° (1979)	52.3° (1986)
16	86°	63°	3%	106.2° (2014)	54° (1986)
17	85.8°	62.1°	2%	100.4° (1984)	53.8° (1977)
18	85.3°	62.1°	3%	104° (1984)	52.2° (1993)
19	84.7°	61.7°	3%	105.1° (1984)	53.1° (1978)
20	84.2°	61.3°	7%	102.4° (2015)	52° (1965)
21	85.6°	61.3°	0%	100.4° (2021)	51.3° (1968)
22	86.9°	61.7°	3%	101.8° (1975)	51.6° (1986)
23	88°	62.1°	3%	103.8° (1975)	52.5° (1961)
24	87.8°	62.1°	3%	105.8° (1978)	52.9° (1998)
25	87.1°	62.2°	5%	105.6° (1978)	51.8° (2005)
26	86°	62.8°	7%	105.8° (1963)	53.6° (1986)
27	86.4°	61.9°	0%	110.1° (2010)	52.3° (1986)
28	86.4°	62.1°	3%	108.3° (1963)	51.4° (1971)
29	86°	62.1°	5%	104.9° (1963)	49.8° (1971)
30	86.7°	61.3°	3%	106.2° (2020)	48° (1982)