August 2021 across the Front Range was defined by its poor air quality and tenacious smoky skies which were mostly caused by out-of-state wildfires. Other weather highlights during the month included a rotating thunderstorm which prompted tornado sirens, lots of red smoky sunsets, a sprinkle of summertime snow in the Mountains, and the landfall of Category 4 Hurricane Ida sixteen years to the day after Hurricane Katrina. Here’s a quick and colorful recap of our weather during August and how it relates to climatology.
Category: Verification (Page 17 of 48)
These posts take a look back at recent weather events, like snow storms or severe weather outbreaks, and evaluate how the forecast played out. We evaluate how well the models predicted what actually occurred, and offer insight into what can be learned and applied moving forward.
During July 2021, the summer monsoon pattern tended to favor areas further west with persistent high pressure holding over Colorado. Despite this, with a little luck involved, Boulder managed to notch a Top 20 wettest July, while most of the Front Range was very dry. Other weather highlights during the month included persistent smoke from new fires burning in the Pacific Northwest, multiple bouts of triple-digit heat, highly localized flooding in portions of Boulder, and frequent mudslides across the Mountains which has left Interstate 70 indefinitely closed near Glenwood Springs. Here’s a quick and colorful recap of our weather during July and how it relates to climatology.
Front Range weather during the month of May was certainly busy! We got our first taste of summertime thunderstorms, including accumulating hail in spots. There were numerous upslope storms; a few even turned cold enough for snow in Boulder and Denver. La Niña dissipated and the drought showed continued signs of improvement. Here’s a quick and colorful rundown of our weather during May 2021, the notable atmospheric highlights and how it all relates to climatology.
Anywhere from 0.5 to 1.5″ of liquid fell across the Front Range in the past few days, including up to 15″ of snow in the Foothills. There was also some accumulating snow across the lower elevations, too. Let’s take a look at the snow totals from the last few days!
Our weather during the month of April was very fickle. Eleven consecutive warm days kicked off the month but were quickly followed by a prolonged period of cold and snow on the heels of several Arctic outbreaks. The important result, however, was a significant improvement in the drought across northeast Colorado. Here’s a quick and colorful rundown of our weather during April 2021 and how it relates to climatology.
As 1 to 2″ of rain fell across the lower elevations this week, snow was falling above 6500 feet elevation across the Front Range where temperatures were cold enough. Let’s take a look at the snow totals from a storm that kicked off the month of May!
A review of the snow totals from Tuesday night into Wednesday as snow fell above 6000 feet elevation across the Front Range (with just plain rain in Boulder and Denver).
A review of the snow totals from Wednesday evening and night as a prolonged period of generally light snow impacted the Front Range.
Live View of Boulder
Current Conditions
Live Radar
Recent Premium Posts
BoulderCAST Daily – Tue 05/13/25 | One final hot day landing just shy of records; the cooldown begins tomorrow
⦁❶⦁ Southwest flow continues the warmth today with highs in the mid-to-upper 80s …
BoulderCAST Daily – Sun 05/11/25 | Warm with limited shower chances
⦁❶⦁ Mostly dry and warm here in the 80s – wet in the …
BoulderCAST Daily – Sat 05/10/25 | Staying mild with limited shower chances this weekend
⦁❶⦁ Staying warm in the upper 70s ⦁❷⦁ A slight chance of a …
3-Day Forecast
Air Quality
Trending Content
Live View of Boulder
Trending Content
© 2025 Front Range Weather, LLC