Historical weather data, all-time temperature records, and monthly climate averages for Grand Junction, CO. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Grand Junction is a mild transitional day, with highs averaging 61° and lows around 36° across 63 years of records. The date has seen a wide swing in fortune — from a balmy 82° in 2011 to a frigid 22° low in 1977. Rain or snow is unlikely, with only a 14% chance of any precipitation.
Grand Junction plays for keeps on the extremes — the mercury has soared as high as 107° in July 2003 and plunged to -21° in February 1989, a 128-degree spread. A single September day in 1965 dropped 1.35 inches of rain, and December 2009 buried the city under 8.5 inches of snow in one shot.
Grand Junction runs hot and dry through summer, with peak highs averaging 94° the second week of July — prime Western Slope desert weather. Winters are cool but manageable, with January highs sitting around 35°. If you're chasing rain, aim for mid-September, the wettest stretch of the year, though even then you're only looking at about a quarter inch on average.