Historical weather data, all-time temperature records, and monthly climate averages for Firestone, CO. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Firestone lands right in the heart of spring's unpredictability — the average high of 60° sounds pleasant enough, but this date has swung from a scorching 83° in 2021 to a brutal 9° back in 1945. There's a 1-in-10 chance of snow today, so don't put those layers away just yet.
Firestone's weather has real range — from a suffocating 106° in June 1994 to a bone-snapping -38° in January 1930, a swing of 144 degrees between extremes. The snowiest single day on record dropped 37 inches in April 1920, a reminder that Colorado's Front Range can deliver winter's worst well into spring.
Summers are warm and short — highs peak around 89° in early July before tapering off quickly through fall. Winters are mild by Colorado standards, with January highs averaging 43°, though cold snaps can be severe. If you're chasing wet weather, mid-May is your window, with the wettest week of the year averaging 0.63 inches of precipitation.