Sunshine Month

September is Denver's sunniest month of the year. It is also a month of transition, as the hot summer 90s slowly become more rare, and the nights become cooler and crisper. While traditionally a very pleasant and warm month, winter has been known to make an early appearance in September in the past. The earliest frost and earliest snowfalls of the season have both occurred in early September in Denver. On September 3rd, 1961 4 inches of snow was recorded at Stapleton International Airport (NWS).

This morning the air was about as cool and crisp as it's been in months. Many locations dropped into the upper 40s. The rest of the day will remain cool, with highs topping out in the low 70s, but the heat will return for the holiday weekend. By Sunday highs are expected to climb into the mid 90s for much of the region.