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348 FXUS65 KBOU 220606 AFDBOU Area Forecast Discussion National Weather Service Denver/Boulder CO 1206 AM MDT Tue Sep 22 2026 .KEY MESSAGES... - Isolated chances for showers/thunderstorms Tuesday afternoon and evening. - A disturbance moves through Wednesday and Thursday bringing increased chances for showers/storms and cooler temperatures Thursday. - Drier and warmer this weekend, but isolated chances for showers and thunderstorms in the evening are possible. && .DISCUSSION /Through Monday/... Issued at 124 PM MDT Mon Sep 21 2026 Satellite imagery shows a few patchy low clouds over the eastern Colorado plains and a quiet night ahead. Lows tonight will be in the low 50s at low elevations and 30s-40s for the mountains. Temperatures Tuesday afternoon warm up slightly but remain right at seasonal averages, with highs in the low 80s for the Denver metro. A shift to SW flow aloft will result in the return of monsoonal moisture for the mountains. As such, a few isolated showers and storms may develop over the high terrain late in the afternoon. The chance for showers over the Denver metro and east Colorado plains will remain very low (