Boulder managed to tie yet another record high on Monday, surging to 88°F during the mid‑afternoon. That mark has been reached three other times on May 11th in 1961, 1962, and 1963—a remarkable cluster of early‑season heat events from more than six decades ago. Yesterday also goes down as Boulder’s second‑warmest day of 2026 so far, trailing only one of …

Ben Castellani

Ben Castellani

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.

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