Category: Climatology (Page 3 of 63)

These posts contain information about the long-term weather patterns of Boulder County. Potential topics may include 30-day weather outlooks, El Nino/La Nina, and seasonal forecasts. You will find less about the day-to-day weather, with more focus on longer trends and patterns.

Premium BoulderCAST Daily – Fri 08/29/25 | Scattered storms today & tomorrow with continued below normal temps

August 29, 2025 / Ben Castellani

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Premium This Weekend in Colorado Weather: A few more stormy days ahead of a beautiful Sunday and Labor Day

August 28, 2025 / Ben Castellani

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This Week in Colorado Weather: August 25, 2025

August 25, 2025 / Andy

The unsettled weather pattern isn’t done with us just yet—and that’s good news for the rain-starved Front Range. While recent days have underdelivered in most areas, this week still holds promise for more moisture and continued cool weather. We break down when and where the best rain chances will line up this week, why optimism is cautious, and what to watch for as the pattern turns warmer and drier heading into Labor Day Weekend.

Colorado Forecast Update: Record warmth quickly gives way to a prolonged cool & wet stretch across the Front Range

August 21, 2025 / BoulderCAST Team

Thursday marks the final chapter of our late-summer heatwave, with record-challenging highs expected across the Front Range — but big changes are on the horizon. A cold front arrives tonight, ushering in cooler temps, a return of thunderstorms, and a wetter, more active pattern that could stick around well into next week. From sizzling heat to damaging hail, monsoonal moisture, and a long stretch of below-normal highs, today’s forecast update has a little bit of everything.

Premium BoulderCAST Daily – Wed 08/20/25 | Two more hot days, but there are hints of autumn in the extended

August 20, 2025 / Ben Castellani

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This Week in Colorado Weather: August 18, 2025

August 18, 2025 / Ben Castellani

If you’ve been quietly rooting for a late-season monsoon comeback, it might be time to recalibrate. Boulder’s summer has been historically dry, and this week won’t offer much relief, at least initially. A persistent ridge of high pressure is set to lock in more heat and keep moisture at bay. But don’t tune out just yet—there’s a subtle pattern shift coming that could open the door to cooler temps and better storm chances by the weekend. Let’s take a closer look.

Premium This Weekend in Colorado Weather: The heat and smoky haze stick around through the weekend with only low-end storm chances

August 14, 2025 / Ben Castellani

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This Week in Colorado Weather: August 11, 2025

August 11, 2025 / Ben Castellani

After a weekend of thunder and cooler air, the Front Range is catching its breath under clear skies and a brief spell of dry northwest flow. But don’t get too comfortable—heat, haze, and a few storm chances are already lining up for a return later this week. In this update, we break down the shifting ridge pattern, what it means for temperatures, and when wildfire smoke and monsoon moisture might make a comeback.