When Is Hail Season in Colorado?

Hail season in Colorado peaks in June. May, June and July make up most hail days since 2015: 431 of 633 (68%). The most common hour is 3 PM Mountain time.

Hail days by month

Each number is a day when hail was reported in Colorado.

• January0 days
• February0 days
• March3 days
• April25 days
• May126 days
• June155 days
• July150 days
• August124 days
• September39 days
• October11 days
• November0 days
• December0 days

Reports by hour of day

Local time. Each number counts the reports in that hour.

• 12 AM24 reports
• 1 AM16 reports
• 2 AM18 reports
• 3 AM14 reports
• 4 AM6 reports
• 5 AM4 reports
• 6 AM2 reports
• 7 AM2 reports
• 8 AM4 reports
• 9 AM9 reports
• 10 AM8 reports
• 11 AM57 reports
• 12 PM206 reports
• 1 PM420 reports
• 2 PM705 reports
• 3 PM863 reports
• 4 PM750 reports
• 5 PM733 reports
• 6 PM520 reports
• 7 PM350 reports
• 8 PM226 reports
• 9 PM158 reports
• 10 PM90 reports
• 11 PM47 reports

How we counted

Counts come from NOAA hail reports since 2015. A hail day is a date with at least one report in the state. Official report times are already local. Recent Storm Prediction Center reports are converted from UTC to Mountain time. More reports come from populated areas, because more people are there to report hail, so this is not a measure of risk.