Denver’s weather is notorious for being changeable. However, this is not the case for July. Most July days will begin with sunshine in the morning and then clouds will develop in the afternoon. This month, thunderstorms often develop over the foothills and drift across the Denver metro area and onto the Eastern Plains. A few of those storms likely will continue to gain strength and reach severe levels.
The worst hailstorm on record in Denver’s history moved across the western sections of the city on July 11, 1990. Baseball- to softball-sized hail fell over the area and caused millions of dollars’ worth of property damage.
July is the stormiest month of the year, with thunderstorms occurring about every third day.
Most of the month’s precipitation is rainfall from slow- moving thunderstorms that can cause precipitation amounts to vary at different locations across the metro area.
July is also the month in which Denver experiences the most consecutive days of 90 degrees or warmer. The month’s consecutive stretch of 90-degree days was 19, which occurred in 2008 from July 13 through July 31.
The streak continued several days into August to finish with a total of 24 consecutive days reaching 90 degrees.
