textproduct: Grand Junction

KEY MESSAGES

- Wet weather returns to the region on Tuesday with showers and storms possible each day through the end of the work week.

DISCUSSION

Issued at 1259 PM MDT Sun Sep 20 2026

DRIER THROUGH MONDAY:

Drier conditions and cooler, more seasonable temperatures remain in place through Monday as high pressure builds over the Great Basin. Enough moisture may still linger for some isolated showers and storms over the higher terrain, but those chances are very low.

PRECIPITATION CHANCES RETURN TUESDAY ONWARD:

A low pressure system will move onto the Great Basin over the next 24-36 hours. This shift will result in moisture-rich southwesterly flow setting up over the Intermountain West. At the same time, high pressure sets up over Texas, drawing Gulf moisture into the Desert Southwest. As a result, wet weather returns to the forecast on Tuesday with storm coverage ebbing and flowing throughout the week. Multiple days of precipitation are likely, especially over the southern Mountains.

AVIATION /18Z TAFS THROUGH 18Z MONDAY/

Issued at 1205 PM MDT Sun Sep 20 2026

VFR conditions are forecast throughout the TAF period. Occasional wind gusts up to 18-22 knots are possible this afternoon. There is a 20% chance for low clouds to develop early tomorrow morning at KHDN that could cause ILS breakpoints to be reached, but confidence was too low to include in the TAF at this time.

GJT WATCHES/WARNINGS/ADVISORIES

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