St. Patrick’s Day in Denver is a holiday known for its vibrant parades, green rivers, and plenty of festive spirit. But when it comes to weather, the holiday has been anything but predictable! Over the past 150+ years, March 17th has seen everything from frigid cold to record-breaking warmth, with a touch of snow and rain thrown in for good measure. This year (2025), Denver is experiencing a warm but gusty St. Patrick’s Day, a pattern not uncommon for the Mile High City in mid-March.
A Look at the Extremes
Denver’s warmest St. Patrick’s Day on record was in 2012, when temperatures soared to 76°F, making it a perfect day for outdoor celebrations. On the other end of the spectrum, 1892 holds the record for the coldest St. Patrick’s Day, when temperatures plummeted to -6°F, an incredibly frigid day that would have made celebrating quite a challenge!
Other Notable Temperature Extremes:
- Top 5 Warmest: 75°F (1974), 74°F (2007, 1887), 73°F (1916)
- Top 5 Coldest: 0°F (1872), 2°F (1923), 4°F (1924, 1906)
How Often Does It Snow on St. Patrick’s Day?
While Denver is known for its spring snowstorms, March 17th doesn’t always see much snowfall. The most recent measurable snow on the holiday occurred in 2022, when 4 inches blanketed the city. The snowiest St. Patrick’s Day ever? That was 1906, when 4.2 inches fell, making for a very wintry celebration.
Despite these snow events, there’s only about a 26% historical chance of any precipitation on March 17th, meaning the odds generally favor a dry, if not entirely sunny, holiday.
What About Wind?
As Denverites are experiencing in 2025, wind can also be a major factor. March is one of the windiest months in Colorado, and St. Patrick’s Day is no exception. Gusty conditions, like today’s breezy but warm setup, are a frequent occurrence.
What’s the “Typical” St. Patrick’s Day Weather in Denver?
If we take the averages into account:
- Average High: 53.3°F
- Average Low: 28.1°F
That means most years land somewhere in the comfortable mid-50s range during the day, though with Denver’s rapid weather swings, it’s best to prepare for anything!
Final Thoughts
Whether you’re braving the wind today or reminiscing about past snow-covered St. Patrick’s Days, Denver’s climate history on March 17th is as varied as the celebrations themselves. So, whether you’re donning a light jacket for a warm parade or bundling up in layers against the chill, one thing is for sure—Colorado’s unpredictable weather keeps St. Patrick’s Day interesting year after year!
Happy St. Patrick’s Day, Denver! May your celebrations be warm, your wind gusts be mild, and your luck be plentiful!