Originally Posted by
darthbimmer
....In late September it'll still be hot in Death Valley but not brutally so. Use common sense about the weather (e.g., drink lots of water) and you'll be fine....
According to the New York Times "World Weather Guide," the average daily high temperature in September in Death Valley is 106degF (41degC). Hottest it's gotten is 121degF (49degC).
That is moderate compared to July, when the average high is 116degF (47degC) and the hottest is 134degF (57degC).
Note that these temperatures are measured in the shade. However if there is one thing Death Valley has very little of, it's shade.
Personally, I'd still avoid September!