Historical weather data, all-time temperature records, and monthly climate averages for Greeley, CO. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Greeley is classic Colorado unpredictability — the average high of 63° feels like spring, but that 32° average low keeps things honest. Just two years ago in 2023, temperatures bottomed out at 15°, while 2021 hit a balmy 86° on this same date. Snow is unlikely but not impossible, with a 7% chance if the atmosphere decides to remind you what month it actually is.
Greeley's weather has a serious range: 59 years of data have produced an all-time high of 112° in July 2006 and a brutal -25° in January 1984 — a 137-degree spread that tells you everything about life on the Front Range. The wettest single day on record dropped 3.48 inches in July 2001, and an October snowstorm in 1969 buried the city under 18.2 inches before the leaves had even finished falling.
Greeley summers are genuinely hot, with the warmest week of the year averaging a 91° high in early July before temps gradually ease through fall. Winters are cold but not brutal by Colorado standards — January highs average 42° and the coolest week of the year still clears freezing most days. If you're watching for wet weather, late May through early June is your window, averaging nearly three-quarters of an inch of precipitation per week.