Historical weather data, all-time temperature records, and monthly climate averages for Southglenn, CO. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Southglenn tends to sit right on that classic spring fence — expect a high around 57° and a low that can still bite at 32°. The date has swung dramatically over the years, from a balmy 75° in 1959 to a frigid 17° back in 1964. Snow is possible but unlikely, with only a 6% chance.
Southglenn's weather has real range — 134 degrees separate the all-time high of 102° (July 1954) from the all-time low of -32° (January 1963). April is no stranger to the extremes either, holding the snowiest single day on record at 15.8 inches, set on April 2nd, 1957.
Southglenn runs warm and sunny through summer, peaking the week of July 16-22 with average highs of 87°, then cools steadily to a January trough of 41°. The wettest window is mid-May, averaging 0.88 inches for the week — spring is when moisture matters most here. If you're chasing dry and warm, aim for August through September.