textproduct: Cheyenne

KEY MESSAGES

- Multiple cold front are expected to impact the forecast area through the end of the week. Temperature will gradually cool throughout the week, with the strongest shot of cold air expected Friday. Precipitation chances will be minimal with each front.

SHORT TERM /THROUGH THURSDAY/

Issued at 337 PM MST Tue Jan 20 2026

Current observations show the cold front beginning to drop into the northern reaches of the CWA. Observations along US-20 show winds turning out of the north with gradually falling temperatures. The front should continue to make its way south over the next few hours, with it completely through the CWA by this evening. Precipitation looks possible behind the frontal passage. Observations in northern Wyoming do show light radar returns with ASOS stations confirming precipitation. Given the origin of the front, moisture will be minimal, however, lift provided by the front will likely be enough to produce light snow showers. Hi-Res guidance keeps most of the shower activity in Wyoming, but those in Nebraska should not be surprised to see a few flakes fly this evening. Accumulating snow is not expected. Luckily, the effects of this fast moving cold front will only be felt tonight with low temperatures in the teens and single digits.

Cold air aloft will quickly be ushered out Wednesday morning with winds turning more westerly. 700 mb temperatures will be in the negative single digits which will lead to highs roughly near-average for most of the CWA. With the more westerly winds and jet energy aloft, Wednesday will be another breezy day, however the threat of high winds will be low. Drier air aloft will also move in leading to mostly sunny skies throughout much of the day. Another cold front will move into the area Wednesday evening, bringing more cloud cover and colder temperatures. High temperatures on Thursday will be much cooler, with highs anywhere from 5 to 15 degrees cooler than Wednesday. Cloud cover will help keep temperatures below average, but luckily winds will be on the light side so apparent temperature should be close to the actual temperature. Once again, precipitation chances will be minimal.

LONG TERM /THURSDAY NIGHT THROUGH TUESDAY/

Issued at 337 PM MST Tue Jan 20 2026

Chilly days expected to start the long term behind a stout arctic airmass. Overnight temperatures into Friday morning will range between the single digits to negatives, with highs only peaking into the teens, and some low 20's for our western zones. Meanwhile the passing system should bring a shot of snow that currently doesn't look insignificant - probabilities for 0.1 inch or more over 24 hours are at 40-60%, and 1 inch or greater 15-30%. While these probabilities aren't a certainty or spectacularly high, they're higher than most of what we've seen this season, giving hope for at least a little bit of precipitation during our drier than normal winter. Saturday morning will bring another cold morning as lows descend into the low single digits and negatives, thankfully winds will not be breezy saving us from cold weather products for the day. Sub- freezing highs persist through Sunday, with ridging bringing a warming trend back by Monday and bringing us to near to above normal for highs. Some breezy winds are also expected with pressure gradients tightening, primarily on Sunday into Monday, but upper level winds aren't expected to be supportive of stronger gusts and in house guidance struggles to produce probabilities greater than 25% for high wind warnings (58+ mph). Overall while active, chilly, and getting a small chance at some snow, the long term shouldn't be too busy for this time of year.

AVIATION /00Z TAFS THROUGH 00Z WEDNESDAY/

Issued at 420 PM MST Tue Jan 20 2026

High clouds are rolling through; however, they pose no threat to aviation operations, so VFR conditions will prevail across all terminals for the duration of this TAF period. Breezy winds impacting all terminals should decrease rather rapidly through the evening to less than 15 knots by 07Z Wednesday. This calmness is short lived as they will ramp up once again Wednesday morning.

CYS WATCHES/WARNINGS/ADVISORIES

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