The very dry airmass, clear skies and calm nighttime winds have resulted in very favorable conditions for large diurnal temperatures ranges across Western Wyoming the past several days. Rises in temperatures from sunrise to peak afternoon heating in excess of 50 degrees have been common in the lower valley locations such as along the Salt River in Star Valley.
Today saw extreme ranges from frost at sunrise to mid summer like temperature by early afternoon in some locations. Following is a list of the more notable temperature ranges today.
Bondurant High 84 Low 24 60 degree range
Double L Ranch(nw of Etna) High 86 Low 28 58 degree range
Pixley(south of Cokeville) High 82 Low 25 57 degree range
Jackson High 85 Low 30 55 degree range
Of particular note was Peters Sink west of Bear Lake in Northern Utah where the morning low was 18 warming some 57 degrees to a high of 75 this afternoon.
Following is the graph of temperatures and humidity for the past week at the Double L Ranch in Star Valley