As of 02:45 PDT

Rosemont, CA weather in May

68°

Rosemont, Sunday, 9 August, 02:45

Clear. Feels like 67°. High 104°, low 68°.

Pressure29.80 inHg

Wind6.2 mph S

Humidity67%

Visibility6.2 mi

Dew point57°

See detailed hourly forecast

In May, Rosemont, CA averages a high of 79.9° and a low of 53.3°. About 0.8 inches of precipitation fall over the month (3 wet days). The record high is 106.9° (2021) and the record low 39.2° (1975). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	76.6°	50.9°	12%	92.7° (2015)	42.8° (1967)
2	77°	51.4°	12%	92.5° (2013)	40.5° (1964)
3	77°	51.8°	13%	94.5° (1990)	41.9° (1967)
4	76.6°	51.4°	12%	94.6° (1990)	41.2° (1975)
5	75.9°	51.4°	15%	96.1° (1990)	39.2° (1975)
6	75.7°	51.4°	10%	98.2° (1987)	40.6° (1977)
7	76.8°	51.1°	12%	99° (1987)	42.3° (1964)
8	77.4°	52.5°	12%	96.1° (2001)	43.5° (1983)
9	77.5°	52°	8%	95° (2025)	42.3° (2003)
10	78.3°	51.4°	5%	96.4° (1987)	42.4° (1980)
11	79.2°	52°	5%	94.1° (2021)	40.6° (2022)
12	79.7°	52.3°	10%	96.8° (1976)	43° (1961)
13	80.4°	52.7°	10%	98.4° (1976)	41.9° (1967)
14	80.6°	53.4°	7%	98.4° (1987)	42.4° (1968)
15	80.4°	53.6°	13%	103.8° (2008)	44.2° (1998)
16	80.4°	53.8°	13%	101.1° (2008)	44.6° (1977)
17	80.2°	53.8°	10%	104° (2009)	42.6° (1998)
18	80.8°	53.8°	13%	100.9° (2022)	43° (1974)
19	80.6°	54°	8%	99.5° (2001)	43° (1974)
20	80.1°	53.6°	8%	100.9° (2001)	42.6° (2019)
21	81°	53.8°	8%	100.8° (2001)	46.6° (2002)
22	82°	54.3°	5%	98.1° (2000)	42.8° (1960)
23	81.7°	54.9°	10%	98.2° (2000)	46.4° (2010)
24	81.5°	54.1°	3%	101.1° (2022)	44.4° (1980)
25	81.1°	54.7°	12%	102.9° (2022)	46.6° (1978)
26	80.8°	54.3°	13%	101.8° (2020)	45° (1998)
27	81.7°	54.5°	10%	103.8° (2020)	44.8° (1977)
28	82.2°	55.2°	10%	106.7° (1984)	45.1° (2010)
29	83.5°	55°	2%	99.7° (1973)	43° (2011)
30	84.7°	55.9°	3%	103.5° (2025)	44.6° (1998)
31	84.9°	56.7°	5%	106.9° (2021)	45.5° (1971)