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July 2026 Graphical Weather Review: In Some Respects, Boulder’s All-Time Hottest Month on Record

July 2026 along the Front Range was relentlessly hot, dry, and devoid of storms, dominated by stubborn upper‑level ridging that fueled long, punishing heatwaves and pushed Denver and Boulder into one of their hottest months on record. Occasional pulses of monsoonal moisture did break through, producing slow‑moving thunderstorms and localized flash flooding near vulnerable burn scars, while wildfire smoke from the West periodically dimmed skies and degraded air quality early in the month. With meaningful rainfall largely absent, Colorado’s severe drought deepened, cementing a July defined far more by heat and haze than by the usual rhythm of afternoon thunderstorms.

Here’s a graphical look at how July 2026 unfolded across Boulder, Denver, and the Front Range — and how it compared to climatology.

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Premium This Weekend in Colorado Weather: As the Heat Dome Reloads, Thickening Smoke Might Be the Only Thing Keeping Us Below 100°

ARebuilding Heat Dome & Stagnant Pattern fter our quick two‑day breather, the sprawling heat dome across the Southwest is already rebuilding and will anchor itself over the Four Corners today through the weekend. Model guidance keeps this ridge nearly stationary—barely wobbling but 100 miles between now and Monday. That’s a locked‑in pattern, and it certainly will affect our weather day …

Premium BoulderCAST Daily – Wed 08/05/26 | Mid‑80s Today, Near‑100° by the Weekend — Plus More Smoke

Highs finally dipped out of the relentless heat on Tuesday — our first sub‑80° day in seven weeks across the Denver Metro area. Boulder even struggled to escape the upper 60s! Even with elevated smoke, it was one of those rare midsummer days where you could step outside at any hour without getting blasted by the climate change furnace. That …

Premium BoulderCAST Daily – Tue 08/04/26 | The Extreme Heat Breaks at Last, but the Smoke Holds Its Ground

Monday delivered exactly what the synoptic setup had been telegraphing for days: a final sweltering day across the Front Range. Temperatures surged into the lower 100s, making it the hottest day of the summer in several spots. Denver’s record fell with a high of 102°F, a new daily mark for August 3rd. https://twitter.com/NWSBoulder/status/2084408062048366711 Boulder went even further, topping out at …

This Week in Colorado Weather: August 3, 2026

A blistering heat wave will end with one of the more dynamic forecast days we’ve seen all summer. From potentially record‑setting triple‑digit heat to a late‑day cold front, gusty virga showers, and a thick wall of wildfire smoke set to drop into the Front Range tonight, Monday packs an unusually busy mix of weather hazards and changes. We’ll walk you through the timing, the impacts, and the brief but welcome multi-day cooldown ahead — plus why the heat dome isn’t done with us yet. We also look ahead to when the monsoon could return.

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Premium BoulderCAST Daily – Sun 08/02/26 | The Front Range Braces for a 100° Doubleheader

GRecord Heat Sunday & Monday OES-East water vapor imagery early this morning shows the core of the upper ridge centered over central Arizona, with a broad clockwise circulation funneling hot, desiccated air directly into Colorado. This is classic mid‑summer ridge behavior for the region: strong mid‑level warming, suppressed cloud cover, and efficient boundary‑layer mixing. A fast-moving Pacific Northwest trough will …

Premium BoulderCAST Daily – Sat 08/01/26 | Hot Temperatures Build This Weekend

Hot temperatures build today and peak Sunday and Monday as a very strong and highly anomalous ridge sets over the region. The NBM forecast high temperatures are indicated below for Denver. This afternoon, we should top out in the middle 90s. But the real heat comes Sunday and Monday when triple digit readings will be quite common. There is a …

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