Author: Ben Castellani (Page 28 of 358)

Ben grew up in southwestern Pennsylvania and holds both a bachelor's and a master's degree in Meteorology, the latter being from CU Boulder. His hometown received nearly three feet of snow from the Storm of the Century back in March of 1993, sparking his initial interest in impactful weather. Ben currently works on remote sensing and data analysis software at NV5 Geospatial Software in Boulder.

Premium BoulderCAST Daily – Tue 11/04/25 | Soaring into the 70s today, but a tad cooler tomorrow behind another dry cold front

November 4, 2025 /

Some of us are stepping outside to surprisingly mild temps near 60°F this morning, while others are bundled up in the 20s—classic localized gradients for this time of year here. This sharp local variation is thanks to weak downslope winds coming off the terrain, a subtle but telling sign of the unseasonable warmth set to build in later today. We’ve …

This Week in Colorado Weather: November 3, 2025

November 3, 2025 /

Sunday’s record-breaking November heat will give way to a dramatic cooldown on Monday, with temperatures plunging 20 to 30 degrees and wave clouds rolling in over the Front Range. The week ahead stays dry and mostly mild, but a few weak cold fronts will stir up some wind and day-to-day temperature swings. And while the forecast looks quiet for now, ensemble models are starting to hint at a colder, potentially snowier shift next week.

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Premium BoulderCAST Daily – Wed 10/29/25 | Widespread sub-freezing temps this morning will rebound nicely towards 60° this afternoon

October 29, 2025 /

We’re waking up to the coldest morning of the season so far — a widespread hard freeze has settled in across the Boulder–Denver metro and the Mountains. Most spots dipped into the low to mid 20s overnight, with some of the low-lying rural areas and higher elevations bottoming out in the teens. At the surface, a notably strong high-pressure center …

Premium BoulderCAST Daily – Tue 10/28/25 | A cool but sunny Tuesday ahead of a hard(er) freeze tonight, while Category 5 Melissa makes landfall in Jamaica

October 28, 2025 /

Yesterday’s quick-hitting disturbance brought light mountain snow and scattered rain showers to the lower elevations, but it’s now well east of us. The trough axis is currently over far eastern Colorado, and in its wake, dry northwest flow has taken over. That’s cleared out our skies overnight and allowed temperatures to tumble—most spots woke up at or below freezing. Behind …

Colorado Forecast Update: Two underwhelming storm systems approach with fire danger increasing into early next week

October 23, 2025 /

Clouds roll in Thursday as a compact storm system approaches from the southwest—but don’t expect much more than a few sprinkles and high mountain snow. Boulder and Denver stay mostly dry, with mild temps in the 60s and a sunnier stretch ahead for Friday and Saturday. A stronger trough will arrive Sunday into early next week, bringing gusty winds and a taste of cooler fall air, but once again little in the way of meaningful rain or snow east of the Mountains. Read on for all the details.

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Premium BoulderCAST Daily – Wed 10/22/25 | One more beautiful day ahead of a weak system set to bring clouds and a few (rain) showers tomorrow

October 22, 2025 /

We’re cruising into yet another quiet weather day across the Front Range. Sunshine sticks around, winds stay light, and temps hover in the mild zone as a ridge axis glides directly overhead. Not much change to speak of, but things will shift a bit tomorrow. For now, Wednesday’s looking bright and pleasant. Expect plenty of sun with just a few …

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