Then, there’s the Desert Southwest which usually peaks in June. The welcome monsoon rains arrive in July and sheltering clouds cool the landscape.
Monsoon rains cool Southwestern summers through July and August. Source: Wikipedia
Finally, there’s California. The currents along the West Coast flow from Alaska. When the chill Pacific air hits the warm land, it creates cooling fog. Summertime can be quite chill. As a famous quote falsely attributed to Mark Twain goes, “The coldest winter I ever spent was a summer in San Francisco.”
It isn’t until September, when northern oceans reach their peak, that most of the West Coast finally warms up.
The cool Pacific current off the West Coast creates a chilling fog for most of the summer. Source:NOAA
Of course, every year is different! How’s the summer temperature in your area this year? Please comment below.