A late-season snowstorm delivered significant snowfall to the Colorado mountains and upper foothills between May 4 and May 6, 2026 [5].
The storm provided critical moisture to the region during a period of ongoing drought concerns. While the timing was unusual for the season, the accumulation helps replenish water resources in the high country.
The weather event was caused by a combination of Arctic air and Pacific moisture. This system impacted several areas, including the South Platte valley and the Palmer Divide above 6,000 feet, as well as Boulder, Grand, Jackson, and Larimer counties [2, 5].
Snowfall totals varied significantly across the state. Some areas reported several inches of powder [1], while other locations saw totals exceeding 20 inches [2]. In the most heavily impacted parts of Colorado, more than two feet of snow fell [3].
"More than two feet of snow have fallen in some parts of Colorado," a USA Today staff reporter said [3].
The storm's intensity surpassed some early expectations. While the Denver Post weather desk reported a forecast of 14 inches for the mountains [4], actual reports from other sources indicated totals reaching over 24 inches in specific locations [3].
"A winter storm warning will be in effect for parts of Boulder, Grand, Jackson and Larimer counties," the Denver Post weather desk said [4].
The precipitation was not limited to snow. While the mountains faced winter conditions, other regions, such as Denver, received rain. A 9 News reporter said snow fell steadily throughout the day Monday and into Tuesday morning [6].
“More than two feet of snow have fallen in some parts of Colorado.”
The arrival of a significant snow event in May highlights the volatility of high-altitude weather patterns. Because the storm delivered substantial accumulation during a drought, the immediate impact is a net gain for the state's water basin, though the late timing can disrupt seasonal transitions for local ecosystems and infrastructure.
