Death Valley temp "only" 123 today - How's it by you?

[eureka1]

65˚in Eureka! Sorry, couldn't help myself.

[Brandon Graves]

Originally Posted by eureka1

65˚in Eureka! Sorry, couldn't help myself.

95°F in Indio! Sorry, couldn't help myself.

[AFtrEFkt]

It got up to 114°F today. ("BUT IT'S A DRY HEAT!!")

[RosieSD]

Originally Posted by citizensadvocate

I guess probably so. Marine air is likely the main driving force of what cools the area particularly at night but sometimes during the day if it's strong enough. It appears the marine breeze can readily reach the interior of SF Bay Area and SoCal than the CV for some reason probably due to the location coast ranges. The ocean breeze effects are actually pretty strong in places like Temecula where it lies in a valley channel where breeze reaches in the afternoon and blows away the daytime heat though for some reason it's effect is less apparent in Escondido compared to surrounding cities until later at night. I find that Humidity is usually lower in Central Valley and desert locations. But the overnights there are very warm even on days daytime highs are not comparably "hot"

Though I would be curious how come the inland empire is quite different in this regard compared to the desert even though the desert is not too far away?

In my experience the mountains are usually pretty cold at night except during extreme heatwaves when the offshore flow brings hot air from the deserts there.

When the onshore flow is strong enough it cool even the CV and the deserts feel the effects. This happened a lot this year with a particularly strong May and June gloom. Possibly driven a lingering La Niña

Yes, we're thinking along the same lines. It has something to do with how the mountains and geography channel air flow. I've always suspected that places like Escondido and the El Cajon Valley get warmer because they're boxed in by mountains and hills that sort of create a heat sink. In the summer, it's not unusual for it to be 10 degrees cooler at my house in the foothills south of El Cajon than it is in El Cajon Valley. With Temecula, part of it may also be all the open space of Camp Pendleton -- without as much concrete and development, it may allow cooler breezes to flow up and over into Temecula.

Again, just talking out loud. One of the things I find fascinating about California -- the whole state, not just Southern Calif. - is how many microclimates there are, and how close together they can be located. When I was growing up "back east" you had to drive for several hours to see a significant difference in general weather like we can have here within in a few miles. Fascinating stuff.