https://www.boulderweather.com/tags/climate-normals/Recent content in Climate Normals on BoulderWeather.comHugo -- gohugo.ioenBoulderweather.comSun, 24 May 2026 00:00:00 +0000https://www.boulderweather.com/post/boulder-weather-by-month/Sun, 24 May 2026 00:00:00 +0000https://www.boulderweather.com/post/boulder-weather-by-month/ <h2 id="how-to-read-boulders-climate-by-month">How to Read Boulder's Climate by Month</h2> <p><script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-1012089347386563" crossorigin="anonymous"></script> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-1012089347386563" data-ad-slot="1011306739" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> Boulder's weather doesn't follow a smooth seasonal curve. Chinook winds erase winter for days at a time, monsoon thunderstorms compress summer rainfall into July and August afternoons, and the spring transition runs from late February through May with heavy snow possible any time in that window. The monthly figures below come from the <a href="https://www.ncei.noaa.gov/products/land-based-station/us-climate-normals">NOAA 1991–2020 U.S. Climate Normals</a> for the Boulder observing station, cross-checked against the <a href="https://psl.noaa.gov/boulder/">NOAA Boulder Physical Sciences Laboratory</a> daily records archive. Higher-elevation neighborhoods like <a href="https://www.boulderweather.com/neighborhoods/mapleton-hill/">Mapleton Hill</a> and <a href="https://www.boulderweather.com/neighborhoods/south-boulder/">South Boulder</a> run 2–4°F cooler with 10–20% more snow than the official station.</p>