For what it is worth...Denver had its latest Spring Freeze in history with a low of 31 on the morning of June 8th...By the 11th we were in the 90's. I could believe that some of the drier places in the northern Arizona/Utah/New Mexico...
Yes, I was just curious where and to see the data.
I know that in Thistle Utah, for example, the average high in July is 90 and the average low 42, a spread of 48 degrees on only an average day. Unfortunately the town disappeared and was abandoned after the floods of 1983 when a landslide dammed the Spanish Fork River and put the town under almost 100 feet of water. Along with the town, went the weather station and other than averages, past data is hard to find.
Anyway, in June and July we've had some days come pretty close. Here is the data at the nearest official station to my house that I can find (Moffat County Airport):
Still no cigar.
You can tell which days are cloudy. Compare July 2 with July 5. July 5th has a temperature swing of less than 30 degrees.
In winter, the daily range is much smaller. Here it is for last January:
