Historical weather data, all-time temperature records, and monthly climate averages for Frederick, CO. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Frederick runs the full Colorado gamut — 107 years of data put the average high at 60° and the low at 28°, but this date has seen everything from a balmy 83° (2021) to a brutal 9° (1945). There's a 1-in-5 chance of precipitation today, with a 10% shot at snow.
Frederick's all-time records tell the story of Colorado's extremes: a scorching 106° in June 1994 and a jaw-dropping -38° in January 1930 — a swing of 144 degrees. April isn't off the hook either; a single storm on April 18, 1920 dropped 37 inches of snow, still the snowiest day on record.
Summers in Frederick are warm and dry, peaking the first week of July with average highs of 89°, while January is the coldest stretch at just 42°. If you're watching for rain, mid-May is the wettest window of the year, averaging 0.63 inches in a single week — classic Colorado Front Range storm season.