The second week of September will bring a prolonged period of unseasonable warmth to the Front Range along with minimal rainfall. The early to mid-week period will actually have slight chances for rain, but late-week will have much drier air and gusty winds leading to elevated fire danger. Temperatures will remain close to 90 degrees every single day in the extended, with some influx of wildfire smoke at times from the Pacific Northwest. Read on for all the details.
Category: Tropical Weather (Page 5 of 20)
August brought welcomed change to the Front Range with the elusive American Southwest Monsoon finally making a late appearance. While much of the area ended with below normal rainfall in August, it was notably wetter than months prior leading to a slight improvement in the regional drought. It was also hot in August, with overall temperatures and the number of 90-degree days landing above normal. Here’s a quick and colorful graphical recap of our weather during August and how it relates to climatology.
This content requires a subscription to BoulderCAST Premium.
This content requires a subscription to BoulderCAST Premium.
Our scorching hot, two-week-long heatwave will finally come to an end later this week, but not before we endure a few more days. A cold front is slated to arrive into the Denver area late Wednesday finally knocking us out of the 90s. This front will also come with an enhanced chance of rainfall, though monsoon moisture is still largely lacking. Despite daily chances for rain this week, our existing fires will continue to smolder and the risk of new fire ignitions remains uncomfortably high.
The North American Monsoon is responsible for pumping subtropical moisture into the southwestern United States every summer, moisture which ultimately supplies the fuel for Colorado’s daily summertime thunderstorms — rain we desperately need in the Front Range right now following months scarce precipitation and worsening drought. However, the arrival and intensity of the summer monsoon varies substantially from year to year, especially in our area. In this long-range outlook, we discuss the developing dire drought situation, the current state of the monsoon, what’s happening with El Niño, and what to expect for weather in the coming months across Front Range Colorado.
Say goodbye to those 70s we had on Sunday. Record-setting heat is queuing up later this week as a strong ridge will build into the area from the Desert Southwest. With this, expect progressively warmer daytime highs as the week wears on, eventually soaring into the lower 100s by Friday and into the weekend ahead. Alongside the heat, there will be very limited chances for rain this week, with any storms that do manage to form in this hot and dry airmass being mainly confined to the Mountains and Foothills.
This week’s weather in the Front Range will feature a welcomed northwest flow pattern, one which will usher in cooler temperatures but unfortunately little in the way of rainfall as the monsoon remains at bay. Several disturbances will be tracking across northern Colorado but will have extremely limited moisture to work with resulting in most areas staying nearly bone-dry this week. While not good at all for the ongoing drought, this setup will allow for cool and beautiful conditions for the Fourth of July — just be mindful that fire danger is growing. Read on for all the details.
Live View of Boulder
Current Conditions
Live Radar
Latest Smoke Forecast
Recent Premium Posts
BoulderCAST Daily – Tue 07/21/26 | Record Heat Fades as Haze and Spotty Storms Take Over
🌡️ Heat Break — After Monday’s near‑100° scorch, a weak backdoor front knocks …
BoulderCAST Daily – Sun 07/19/26 | Heat Advisory Continues Through Monday
🥵 Heat Advisory through Monday — Highs in the upper 90s continue today …
BoulderCAST Daily – Sat 07/18/26 | Heat Advisory Issued Sunday and Monday for the Front Range
🥵 Heat Advisory Issued — Sunday through Monday for upper 90s to low …
3-Day Forecast
Trending Content
© 2026 Front Range Weather, LLC