Tired of the heat, Denver? ❄️ Earliest measurable snowfall: Sep 3, 1961 (35 days) 🌡️ Avg high drops below 80°: Sep 17 (49 days) 🍂 Official start of fall: Sep 22 (54 days) 🍁 Avg 1st freeze/avg high drops below 70°: Oct 7 (69 days) 🌨️ Average 1st snow: Oct 18 (80 days) #COwx