Forecast for Death Valley temperature for instance, is FREEZING (30F to 32F) this weeekend.
See it at ...
http://www.google.com/search?sourceid=navclient&aq=&oq=death+valley+&ie=UTF-8&rlz=1T4ACAW_enUS351US351&q=death+valley+weather&gs_l=hp..2.0l4.0.0.1.30095...........0.Gt_IPBoiRJM&pbx=1
That's in the valley itself, below sea level. In some parts of Death Valley Nat'l Park it is hovering around zero degrees overnight. And just 40 miles up the road from the northern boundary of the park, it recently hit -27 below.