BoulderCAST

Colorado Monsoon Update: Subtropical Moistures Surges to End the Week, Cooler and Storm‑Friendly Pattern Holds Through the Weekend

August 13, 2026 / / 1 Comment

After weeks of sizzling heat and hydrological disappointment, a deep surge of monsoon moisture is pushing into the Front Range today, with precipitable water values approaching 200% of normal and a highly efficient rainfall environment already in place. Satellite imagery and overnight boundary interactions are signaling an active convective day ahead, with both severe and flooding hazards on the table Thursday. Monsoon storm chances will progressively decrease but ultimately stick around through the weekend alongside below normal temperatures. We dive into the forecast specifics, including the monsoon moisture transport, mesoscale boundaries, severe and flood risk, expected rainfall amounts, and how the weekend will play out as subtropical moisture slowly retreats.

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This Week in Colorado Weather: August 10, 2026

August 10, 2026 / / 0 Comments

As we kick off the week, the Front Range is staring down a few more days of stubborn August heat — but that pattern is about to crack. A midweek shift will pull cooler air, deeper monsoon moisture, and widespread storms back into Colorado, including a real shot at heavy rainfall. After weeks of haze, heat, and bone‑dry afternoons, the atmosphere finally looks ready to turn the page. We break down what this transition means for the Boulder-Denver area, and how long the cooler, wetter pattern is poised to stick around.

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