BoulderCAST

This Week in Colorado Weather: August 17, 2026

August 17, 2026 / / 0 Comments

A series of subtle weather shifts will shape the upcoming week along the Front Range, beginning with a return to warmer temperatures and a brief interruption of monsoonal moisture. A midweek frontal passage then reintroduces instability, moisture transport, and an uptick in storm coverage — including the potential for some severe cells. Heat will rebuild late week as the ridge re-strengthens over the area, before another likely resurgence of monsoonal flow enters the discussion for next week. Read on for all the details.

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

August 13, 2026 / / 2 Comments

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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