* Average temperature: 27°F (-3°C)
* Snowfall: 11.6 inches (29 cm)
* Major events: National Western Stock Show (held annually in Denver, Colorado, about 4 hours from Casper)
February
* Average temperature: 32°F (0°C)
* Snowfall: 8.7 inches (22 cm)
* Major events: Wyoming High School Rodeo Finals (held in Casper)
March
* Average temperature: 41°F (5°C)
* Snowfall: 7.2 inches (18 cm)
* Major events: Casper Mountain Music Festival (held annually in July; announces its lineup in spring)
April
* Average temperature: 52°F (11°C)
* Snowfall: 2.7 inches (7 cm)
* Major events: Wyoming State Fair (held annually in Douglas, Wyoming, about 1 hour from Casper)
May
* Average temperature: 64°F (18°C)
* Snowfall: 0 inches (0 cm)
* Major events: Central Wyoming Fair and Rodeo (held in Casper)
June
* Average temperature: 75°F (24°C)
* Snowfall: 0 inches (0 cm)
* Major events: Casper PRCA Rodeo (held annually in July; announces its lineup in spring)
July
* Average temperature: 84°F (29°C)
* Snowfall: 0 inches (0 cm)
* Major events: Wyoming State Championship Snowshoe Race (held in Casper)
August
* Average temperature: 80°F (27°C)
* Snowfall: 0 inches (0 cm)
* Major events: Natrona County Fair (held in Casper)
September
* Average temperature: 66°F (19°C)
* Snowfall: 0 inches (0 cm)
* Major events: Casper College Alumni Homecoming (held in Casper)
October
* Average temperature: 49°F (9°C)
* Snowfall: 2.8 inches (7 cm)
* Major events: Halloween on the Square (held in Casper)
November
* Average temperature: 37°F (3°C)
* Snowfall: 7.5 inches (19 cm)
* Major events: Thanksgiving
December
* Average temperature: 29°F (-1°C)
* Snowfall: 12.6 inches (32 cm)
* Major events: Christmas