Historical weather data, all-time temperature records, and monthly climate averages for Boone, IA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Boone runs cool, with an average high of 55° and a low that still dips to freezing at 32°. The date has seen wild swings over the years — from a scorching 89° back in 1929 to a brutal 10° in 1975. There's roughly a 1-in-3 chance of some precipitation today, though snow is unlikely at just 4%.
Boone knows extremes. The thermometer has touched 111° in the peak of summer (July 1936) and plunged to -35° in the dead of winter (January 1912) — a swing of 146 degrees between the all-time records. A single July day in 1993 dropped over 6 inches of rain, and a November storm in 1928 buried the area under 14 inches of snow.
Summer is the clear sweet spot, with highs peaking around 87° in late July and a warm stretch that runs from May through September. If you're avoiding the cold, steer clear of January, when average highs barely reach 28°. June is when the rain really picks up, averaging over an inch in a single week mid-month.