The current weather pattern is losing the cutoff low situated off the California coast and gaining an expanding high from the east. The Western Slope will still maintain showers and thunderstorms through Tuesday afternoon.
The high moving in from the southern central plains will be overhead (Four Corners region) by Monday and will keep the temperatures rising. Storm activity does not shut off entirely and under this ridge of high pressure the southern zones (south of Montrose) should expect Monday afternoon storms. The further south, the stronger the storms. The southern focus of the storms will be evident on the western periphery of the expanding high. The northern zones, (Grand Junction etc…) will have fewer rain showers Monday, but they are in the forecast late day/evening/overnight. Tuesday will hold better storm chances for Grand Junction (northern zones) and fewer for the southern zones as the cutoff low migrates northeast and adds enhancement to an already saturated atmosphere.
After the midweek, warmer and drier conditions will settle into the Western Slope. Late day mountain storms will still be possible late next week and Grand Junction has several shots at more 100° days (9th, 10th and 11th of the year).