Cheyenne, WY – Wyoming will face another round of intense winter conditions as a strong Arctic Blast settles over the High Plains and Rockies from Monday, Dec. 1 through Friday, Dec. 5, launching the region into a harsh Cold December pattern with snow, below-zero temperatures, and dangerous subzero wind chills.
According to the National Weather Service, repeated waves of Arctic energy will bring snow showers, areas of blowing snow, and icy travel, especially along I-80 and the high-elevation corridors between Cheyenne, Laramie, and Rawlins. Accumulations vary by elevation, but low visibility and drifting will remain a consistent hazard.
Temperatures will drop into the single digits and below zero, with –5°F to –15°F possible in central and eastern Wyoming. Wind chills may fall between –20°F and –40°F, especially overnight and during early-morning hours. Even western valleys may experience wind chills below zero as strong northwest winds continue through midweek.
NOAA’s 6–10 Day Temperature Outlook places Wyoming within one of the strongest below-normal temperature anomalies in the western United States for Dec. 1–5, consistent with this significant early-season Arctic intrusion. Additional snow showers are possible midweek as reinforcing cold fronts cross the region.
While no major blizzard is currently forecast, the combination of extreme cold, blowing snow, and hazardous wind chills may produce dangerous travel and outdoor conditions across much of the state. Forecasters urge residents to limit exposure and stay updated on NWS alerts.
