As of 19:14 PDT

El Cajon, CA weather in May

81°

El Cajon, Saturday, 8 August, 19:14

Clear. Feels like 83°. High 96°, low 70°.

Pressure29.83 inHg

Wind4 mph SW

Humidity57%

Visibility6.2 mi

Dew point63°

See detailed hourly forecast

In May, El Cajon, CA averages a high of 71.2° and a low of 54.9°. About 0.4 inches of precipitation fall over the month (2 wet days). The record high is 101.1° (2025) and the record low 42.1° (1967). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	70.3°	53.2°	8%	92.8° (2014)	42.1° (1967)
2	71.4°	53.4°	3%	93.7° (2004)	46.6° (1971)
3	71.6°	53.8°	7%	96.3° (2004)	47.7° (2002)
4	70°	54.1°	12%	89.8° (2018)	47.1° (1969)
5	69.4°	54.3°	12%	91.6° (1990)	47.1° (1967)
6	69.4°	53.6°	22%	91.6° (1990)	45° (1975)
7	70°	53.6°	17%	87.3° (2020)	46° (1964)
8	70.3°	53.8°	15%	88.7° (2007)	44.2° (1964)
9	70.3°	54.3°	7%	92.5° (2025)	46.9° (1975)
10	70.2°	54.3°	8%	101.1° (2025)	44.2° (2003)
11	70.5°	54.7°	8%	91° (2025)	47.7° (2005)
12	72°	54.3°	5%	89.4° (1979)	45.9° (2010)
13	72.3°	55.4°	8%	92.8° (1979)	48° (1967)
14	72.1°	55.2°	5%	96.4° (2014)	48.7° (1998)
15	71.2°	55.2°	3%	99.7° (2014)	46.8° (1998)
16	71.2°	55°	10%	93.2° (2014)	48.7° (1962)
17	72°	55°	5%	88.9° (2008)	44.8° (1962)
18	72.3°	55.6°	5%	89.1° (2008)	45.5° (1977)
19	72°	55.4°	5%	86.9° (2008)	48.7° (2011)
20	71.6°	55.6°	7%	94.6° (2017)	44.4° (1974)
21	71.1°	55.4°	2%	88.7° (2025)	47.8° (1962)
22	70.9°	55°	8%	85.5° (2017)	48.2° (1971)
23	70.7°	55.2°	5%	83.3° (2017)	47.5° (2021)
24	70.7°	55.2°	5%	84.9° (2021)	47.7° (2010)
25	70.3°	55°	2%	85.1° (2021)	49.5° (1980)
26	70.9°	55.4°	5%	85.6° (2020)	48.2° (1977)
27	71.8°	55.6°	3%	85.8° (2020)	49.1° (1998)
28	72.7°	56.1°	5%	91.9° (1984)	48.4° (2019)
29	72.3°	56.3°	3%	91.4° (1984)	48.9° (1980)
30	72.9°	56.5°	2%	83.1° (2025)	46.8° (2011)
31	72.9°	56.5°	2%	89.4° (2025)	50.7° (1999)