textproduct: Grand Junction

KEY MESSAGES

- Cool, dry conditions remain in place through the weekend.

- Cloud cover will be on increase Sunday evening and beyond.

- Deeper moisture with a more organized system arrives mid-week, with unsettled weather through week's end.

DISCUSSION

Issued at 1247 PM MDT Sat Oct 17 2026

A weak disturbance spinning up into the Southwest this afternoon will send some cloud cover across the region late this evening and Sunday. This will aid the cool trend in temperatures continuing Sunday and Monday. While moisture looks anemic with this wave, it does look like we manage to get some light rain into southeast UT and southwest CO Sunday afternoon and evening. Freezing levels remain high enough to isolate snow to above treeline in the San Juans, where very little snow is expected anyway. Weak shortwave perturbations continue to ripple across the southern half of the CWA on Monday and Tuesday, ahead of a deeper more organized system coming ashore out west. Stronger southwest flow will return temperatures to the normal range Tuesday and Wednesday.

Early Wednesday, a deeper pool of moisture lifts into the Four Corners ahead of the previously mentioned system. This is expected to produce more substantial rainfall for southern CO and southeast UT. This could also produce some additional snowfall for the mountains, depending on depth of cold air on the backside of this system. Cooler temperatures return Friday and Saturday as cold air pools in the region, while unsettled conditions continue for the mountains.

AVIATION /18Z TAFS THROUGH 18Z SUNDAY/

Issued at 1112 AM MDT Sat Oct 17 2026

VFR conditions expected over the next 24 hours under clear to partly cloudy skies as high clouds drift over. Winds will remain light and terrain driven.

GJT WATCHES/WARNINGS/ADVISORIES

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