textproduct: Grand Junction

KEY MESSAGES

- Unseasonably warm and dry conditions dominate the forecast through the middle of next week.

- While most areas remain unseasonably warm and dry, periods of light precipitation are possible across the northern mountains from mid to late week.

SHORT TERM /THROUGH MONDAY/

Issued at 234 AM MST Sun Dec 14 2025

Some high cloud cover is moving across the northern and central portions of the area as the high pressure ridge transits across the region today. This cloud cover could be tempering overnight lows and fog from developing in colder basins. These high clouds are expected to clear out from the west by daybreak as the ridge axis moves overhead for a mostly sunny afternoon.

High clouds will increase from the west this evening and overnight as a shortwave trough moves into the Great Basin and across the area on Monday. High cloud cover appears to be the only indicator of this shortwave trough passage with a lack of forcing and no precipitation expected. Temperatures both today and Monday continue to be unseasonably mild with highs around 15 degrees above normal.

LONG TERM /MONDAY NIGHT THROUGH SATURDAY/

Issued at 234 AM MST Sun Dec 14 2025

The upper level ridge responsible for our prolonged warm and dry weather flattens out late Monday into Tuesday leading to a pattern shift of sorts. Unfortunately it doesn't look to be enough to snap us out of our warm ways with high temperatures remaining 15-20 degrees above normal through the forecast period.

The potential for precipitation Wednesday night through next weekend is a bit more interesting. In general, we are projected to see an uptick in both moisture and synoptic forcing north of Interstate 70. Periods of light rain and/or snow are anticipated, but the potential for minor winter weather impacts is low (<20% chance) through Friday due to the warmer temperatures causing low snow ratios and high snow levels. Next weekend the likelihood for minor winter weather impacts grows to 30-50% chance over the northern Divide mountains as PWATs near 200% of normal, but we will continue to battle unseasonably warm temperatures which will surely complicate the snowfall forecast. Stay tuned this week as we track the evolution of these weaker weather systems and the potential for more active weather beyond next weekend.

AVIATION /18Z TAFS THROUGH 18Z MONDAY/

Issued at 1035 AM MST Sun Dec 14 2025

Skies are mostly clear, but high cloud coverage should increase this evening, and clear by late tomorrow morning. VFR conditions will prevail, and winds will generally be light and terrain driven.

GJT WATCHES/WARNINGS/ADVISORIES

CO...None. UT...None.