textproduct: Cheyenne

KEY MESSAGES

- Warmer temperatures, breezy conditions and mostly benign weather expected Monday through mid-week.

SHORT TERM /THROUGH TUESDAY NIGHT/

Issued at 244 AM MST Mon Jan 12 2026

Another benign weather day is expected today as upper-level ridging sits over the west coast. Warmer 700 mb air will be ushered into the CWA, with 700 mb temperatures hitting +2C. These temperatures are encroaching on the 90th percentile for NAEFS climatology, leading to a warm day at the surface. Highs east of the Laramie Range will be in the 50s to low 60s, with highs out west in the 40s. These highs will be anywhere from 10 to 20 degrees above average for mid-January! Subsidence under the ridge will keep skies mostly sunny with no chance for precipitation. Monday will also be on the breezy side as the forecast area sits under northwest flow.

Heading into Tuesday, the upper-level ridge axis will still be in place over the west coast. A trough will also drop down from Canada, clipping the CWA. The ridge will allow daytime temperatures to remain mild and above average while the trough will bring increased moisture. As the trough drops down from the north, mid-level moisture will increase, leading to increasing clouds throughout the day. A vorticity max associated with the trough will provide the lift needed to potentially get some snow and rain showers across the CWA. Kept PoPs at slight chance to chance wording Tuesday afternoon into Tuesday night as Hi-Res guidance is split on whether or not precipitation will make it as far south and west as the CWA. If showers do develop, rain can be expected during the day while snow can be expected overnight. Snow accumulations will be minimal. Winds behind the trough will also increase, leading to windy conditions, especially for areas east of the Laramie Range. Cooler temperatures are also expected behind the front heading into Wednesday.

LONG TERM /WEDNESDAY THROUGH SUNDAY/

Issued at 110 PM MST Sun Jan 11 2026

The long term will start off relatively benign, but will then become slightly more active as a short duration pattern change should cool the region off and bring a low-end chance of precipitation alongside breezy winds, but this cold shot will be short lived as we see temperatures rebound to near to slightly above normal by the start of the weekend.

Wednesday begins the period and will see our region still under the influence of a western US ridge of high pressure. Temperatures will remain around 10-15 degrees above normal, with minimal sensible weather concerns. Thursday into Friday a transient ridge overstretching from the upper level high off of California will promote another dry and fairly benign environment, but thanks to our northerly to northwesterly flow aloft it's not anticipated we'll see any further warmth from this system, with similar if not just slightly cooler highs. That being said, a shot of cold follows directly on the heels of this ridge as an upper level low moving into the Great Lakes swings a trough and mostly dry cold front across the CWA late Thursday into Friday. This should allow a few isolated showers Thursday night, but the primary driving force is expected to be orographic enhancement and with minimal moisture present, the probability of seeing any precipitation is low based on ensemble guidance, only around 10-15%, and primarily across the high terrain, and any accumulations would be meager at best. But the cold air that intrudes with it will be noteworthy, dropping our lows into Friday morning into the teens to low 20's. This combined with breezy winds from the enhanced pressure gradient will cause our area to see apparent temperatures into the single digits and nearing the negatives. Also as mentioned, breezy winds will accompany, but currently not anticipating high wind level criteria as gradients look to remain sub-significant, and some breezy 700mb winds will present but omega fields are underwhelming as of this writing, and likely won't be able to fully bring these down to the surface.

Saturday morning lows remain in the teens, but temperatures begin to rebound by the day with highs near to just above normal. This will return us to benign conditions to end the period as high pressure begins to make its return and sensible weather concerns dissipate yet again.

AVIATION /12Z TAFS THROUGH 12Z TUESDAY/

Issued at 418 AM MST Mon Jan 12 2026

VFR conditions are expected through the TAF period with minimal aviation concerns. Most terminals could see gusts of 20 to 30 kts this afternoon, with winds easing after sunset. High clouds will be present throughout the day.

CYS WATCHES/WARNINGS/ADVISORIES

WY...None. NE...None.