Winter Weather in Wyoming

Events

1,066

Deaths

10

Injuries

45

Damage

$4.9 million

• Winter Weather in Wyoming, February 18, 20262 deaths · 24 injured · $4.5 million · 1 eventA strong and moist trough pushed inland during the middle portion of February, leading to several days of impactful weather.
• Blizzard and Winter Storm in Wyoming, January 26 to 30, 20231 death · 40 injured · 10 eventsA multi-day period of snowfall across much of southeast Wyoming areas receiving over 6 inches of snowfall while mountain area received multiple feet of snow accumulation.
• Heavy Snow and Winter Weather in Wyoming, October 22 to 23, 20202 deaths · 4 injured · 2 eventsWyoming Highway Patrol investigated a crash between a dump truck and pickup truck along Interstate 25 west five miles west of Douglas around milepost 145.
• Blizzard and Winter Storm in Wyoming, December 25 to 26, 20092 deaths · 11 eventsAn upper level disturbance on the west coast moved southward over the southern Rockies and then out onto the southern plains from approximately December 21st through the 26th. This system affected the Cheyenne CWA in two waves.
• Winter Weather in Wyoming, March 5, 19991 death · 3 injured · $50,000 · 2 eventsBlowing snow and icy roads caused several accidents on Interstates 25 and 80. An accident occurred at 316 pm west of Cheyenne when a man lost control of his pickup on the ice. The truck flipped over into the ditch.
• Winter Storm and Winter Weather in Wyoming, December 21 to 22, 20111 death · 3 injured · $25,000 · 5 eventsA storm system moved through central Wyoming bringing heavy snow to Casper Mountain and the Wind River Range and adjacent foothills. Two feet of snow fell on Casper Mountain with up to eight inches southeast of Casper.
• Blizzard and Winter Storm in Wyoming, March 13 to 15, 20211 death · 18 eventsHistoric winter storm crippled much of southeast Wyoming with heavy wet snow followed by strong winds and blizzard conditions. Cheyenne received 22.7 inches of snowfall in 24 hours (storm total 30.8 inches) with 4 to 6 foot drifts developing all over.
• Heavy Snow and Winter Weather in Wyoming, October 26 to 28, 20191 death · 13 eventsFlash freeze winter event started the evening of the 26th through the morning and early afternoon hours on the 27th. Initial rain and freezing rain created slick conditions that iced up when precipitation transitioned to snow.
• Winter Weather in Wyoming, December 26, 19981 death · 1 injured · $12,000 · 1 eventOne person was killed, when the car she was riding in hit a patch of ice on Interstate 25, 25 miles north of Cheyenne. The car rolled across the highway, throwing the victim partly out of the car and pinning her beneath it. The driver of the car was also injured.
• Winter Weather in Wyoming, December 21, 20111 death · 1 eventA winter storm system dropped south out of Canada and brought accumulating snow and gusty north winds to portions of North Central Wyoming.
• Winter Weather in Wyoming, October 8, 20171 death · 1 eventA 62 year cold Kentucky woman and a 67 year old man from Montana entered a wilderness area in the Big Horn Mountains to set up camp on October 7th. The man decided head back to the camp on his own on October 8th.
• Winter Weather in Wyoming, November 16, 2024$100,000 · 1 eventA winter-like system moved through southwest Wyoming, resulting in periods of heavy snow and visibility below one quarter of a mile.
• Winter Weather in Wyoming, March 27, 19992 injured · $37,000 · 1 eventIce on highway 287 caused a collision between two pickup trucks. The driver of one of the pickup trucks was seriously injured and had to be extricated from the vehicle. The accident occurred 6 miles south of Muddy Gap at 730 am.
• Blizzard and Winter Storm in Wyoming, February 20 to 23, 20232 injured · 26 eventsWidespread snowfall occurred over much of southeast Wyoming on the 21st through the 23rd. Heaviest snowfall occurred over much of Carbon County in south-central Wyoming with blizzard conditions leading to an extended closure of Interstate 80 through the area.
• High Wind and Winter Weather in Wyoming, December 17 to 18, 2025$28,000 · 97 kt wind · 18 eventsA strong cold front moved across Wyoming and Nebraska December 17th. Scattered snow squalls were observed along the Interstate 80 and Interstate 25 corridor, some producing visibilities below one quarter mile, gusts over 60 MPH, and flash freezing on Interstates.
• Extreme Cold and High Wind in Wyoming, January 10 to 16, 202469 kt wind · 36 eventsA period of strong wind gusts occurred across the southeast Wyoming wind corridors from the 11th through the 12th, in advance of an intense arctic cold front which swept across the region later in the day on the 12th.
• Winter Weather in Wyoming, December 23, 2010$45,000 · 3 eventsAn upper level disturbance passed over the region during the night and early morning, bringing milder air over cold air at the surface. Light freezing rain developed over portions of northeastern Wyoming, mixing with snow and sleet at times.
• Winter Weather in Wyoming, December 9, 19981 injured · $30,000 · 1 eventIcy roads brought the closure of Interstate 25 from Cheyenne south to the Colorado border. 6 traffic accidents occured on Interstate 25 and 3 occured on Interstate 80 on the icy roads. One person in one of the accidents sustained minor facial injuries.
• Winter Weather in Wyoming, October 24 to 25, 201230 eventsA fast-moving upper level low pressure trough combined with a moist upslope flow to produce widespread snowfall in southeast Wyoming.
• Winter Weather in Wyoming, February 17, 20263 injured · 6 eventsMultiple snow squalls raked across Interstate 80 throughout the day on February 17th. A large pile-up was recorded with one of these squalls.
• Extreme Cold and Heavy Snow in Wyoming, February 21 to 23, 202229 eventsA deep upper-level trough brought widespread snow to southeast Wyoming from the morning of February 21st through the early morning hours on February 22nd.
• Winter Weather in Wyoming, December 13 to 15, 201427 eventsA low pressure system tracked northeast from the southern Rockies into the central Great Plains. This system produced light to moderate snow and gusty northeast winds through portions of south central and southeast Wyoming.
• Winter Weather in Wyoming, October 5 to 6, 201226 eventsA series of upper level disturbances moved across southeast Wyoming and produced the first winter event for the season. Generally two to four inches of snow was reported, mainly on grassy areas.
• Winter Storm and Extreme Cold in Wyoming, December 21 to 23, 202223 eventsAn intense arctic cold front tracked rapidly from north to south across southeast Wyoming during the morning and afternoon hours on 12/21.
• Blizzard and Winter Storm in Wyoming, December 22 to 23, 201720 eventsA vigorous Pacific low pressure system produced moderate to heavy snow and strong northwest winds with gusts of 35 to 55 mph across much of southeast Wyoming. The strong winds produced blizzard conditions along Interstate 80 between Laramie and Rawlins.

Winter Weather everywhereEvery kind of event in Wyoming

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.