The park includes some of the hottest locations in the U.S. -- Borrego Valley and Borrego Badlands -- where summertime daily high temperatures can average 107 degrees F. Here, temperatures can climb as high as 125 degrees F.

Annual Precipitation

• 6.86 inches (1962-1994 average).
• Precipitation during the drought years 1982-89 was 0.0 inches.
• All-time high monthly precipitation was 5.07 inches in September 1976, due to Hurricane Kathleen.

Average Temperature

Anza-Borrego Desert State Park - Monthly climate normals
	Year	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
High °F	87	69	73	77	84	93	102	107	105	100	90	78	69
Low °F	58	43	46	49	53	60	68	75	74	69	60	50	43
Average °F	73	56	60	63	68	76	85	91	90	84	75	64	56
Rain	6.51	1.0	1.0	.81	.23	.09	.02	.35	.67	.44	.31	.69	.86