Temperature for October
In Casper, WY during October the average high temperature is 63.4°F. The hottest day on record was October 1, 1992 when the temperature hit 86.0°F.

In Casper, WY during October the average high temperature is 63.4°F. The hottest day on record was October 1, 1992 when the temperature hit 86.0°F.
In October the average monthly rainfall in Casper, WY is 0.93 inches with rain usually falling on between 5 and 6 days. 1941 was the driest October with only 0.00 inches of rain falling, and 1998 was the wettest October with 4.61 inches of rain. The wettest single day in October was 17 October 1998 when 2.33 inches of rain fell.
In October it usually snows on between 4 and 5 days. In October there have been some years when thunderstorms have occurred, although there are other years when there hasn't been a thunderstorm in October.