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By the Numbers: Death Valley Weather


If you like this kinda heat, you probably wouldn't mind playing 18 on the park's Devils Golf Course. Kurt Repanshek photo.


Year to date maximum temperature, degrees Fahrenheit, at Furnace Creek (July 18)


Today’s forecast high temperature for Furnace Creek


Yesterday’s high temperature at Furnace Creek


Morning low temperature at Furnace Creek


Inches precipitation at Furnace Creek in last 12 months.


Inches precipitation at Furnace Creek, year to date.

: Relief is on the way! Afternoon temperatures are expected to drop into the high hundred teens by the weekend, with lows in the high 80s.

Traveler trivia, no extra charge: During July 1913, Death Valley recorded five consecutive days of 129 degrees or above. On July 10, a still-standing U.S. record 134 degrees was recorded at Greenland Ranch, a Pacific Coast Borax Company property in Death Valley.


I recently came across your blog and have been reading along. I thought I would leave my first comment. I don't know what to say except that I have enjoyed reading. Nice blog. I will keep visiting this blog often.


Your assumptions are right on the mark, Kirby. Annual physioclimatic stress (total annual mount of heat stress plus cold stress) can be calculated for any location if you've got the requisite weather data (daily temperature, humidity, windspeed, and sunshine conditions). Once you've done the calculations for hundreds of weather stations, it's a simple matter to create maps showing the distribution of physioclimatic stress. Geographer Werner Terjung was doing this back in the 1960s. I can dredge up some of his "comfort climates" maps of the U.S. if you're really interested.

BTW, I wrote my masters thesis in human physiological climatology (a domain of biometeorology) using Terjung's nomograms. It was entitled "The Comfort Climates of Grand Rapids, Michigan: A Dynamic Approach." It's available on microfilm, though I can't imagine why anyone would want to read the damn thing.

@ RangerLady: The Korean visitor you mentioned, a 52-year old woman, was one of six South Korean nationals who ran afoul of heat stress problems last Sunday afternoon while walking in Death Valley's Mesquite Dunes (near Stove Pipe Wells). It was 123 degrees at the time, and ground temperatures were closer to 140 degrees.

Physioclimatic stress...that's a new term for me, Bob. I'll have to look into that some more. I've always marveled at some numbers, but never put a name on it. For example, the interior continental area (geographically centralized on the North American landmass) of North Dakota and some of the surrounding states tend to have the among the highest record highs (excluding only California and Arizona, maybe Nevada) and the lowest record lows (excluding only Alaska). While our tropical state Hawaii has the lowest record high (excluding perhaps Alaska?) and highest record low. So our Hawaiian friends endure comparatively low physioclimatic stress?

My fiance lives in Death Valley (which was my winter park). I love it there in the winter but I went to visit him just a few weeks ago and it's not so nice in the summer! I've been in high temps was 110 in Zion just last week, but there is no relief from the heat there and I think that's what causes so many problems. Not a lot of shade, no major water source, and even the wind is hot!

On a side note a Korean visitor passed away from the heat just the other day

Ranger Holly

People living in North Dakota are subjected to very high annual physioclimatic stress (cumulative stress) because it's not only very cold and windy up there in the winter, but also quite hot in the summer. I've never calculated the annual stress or the proportional cumulative stress for Furnace Creek (though I did that sort of thing in a former lifetime), but I'd like to get those numbers and then compare them with the corresponding values for a North Dakota station.

The hottest day we lived there was 127. Yes, its hot but your learn to adapt and to do things in the cooler hours of the morning. I will take the heat of Death Valley over the cold of North Dakota (lived there too) any day!

A stiff breeze sure won't do you any good when it gets that hot. Normal skin temperature is 91 degrees, plus or minus about two degrees, so any time the ambient air temperature is hotter than that, the breeze will add heat to your body. Because summer evaporation rates are extremely high at Furnace Creek (as you've pointed out), evaporative cooling can work very well. Comfort-wise, it'd make more sense to stay out of the pool and just use the pool water to soak your clothing and a towel-turban for your head. The downside is that wet fabric dries amazingly fast in the hot breeze, so keeping that stuff wet will keep you busier than a one-armed paper hanger.

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