https://www.boulderweather.com/tags/first-frost/Recent content in First Frost on BoulderWeather.comHugo -- gohugo.ioenBoulderweather.comSun, 25 Oct 2026 00:00:00 +0000https://www.boulderweather.com/post/boulder-weather-october-first-snow-odds/Sun, 25 Oct 2026 00:00:00 +0000https://www.boulderweather.com/post/boulder-weather-october-first-snow-odds/ <h2 id="boulder-weather-in-october-a-month-that-loses-14-degrees">Boulder Weather in October: A Month That Loses 14 Degrees</h2> <p>October takes 14 degrees off Boulder's afternoon high. The <a href="https://psl.noaa.gov/boulder/dailyrecords/">normal high falls from 72°F on October 1 to 58°F on October 31</a>, and the normal low drops from 45°F to 33°F. The <a href="https://psl.noaa.gov/boulder/freeze.html">median first frost</a> comes on October 6 and the <a href="https://psl.noaa.gov/boulder/firstsnow.html">median first measurable snow</a> on October 20, so both median dates fall inside the month. Boulder's official station has stood <a href="https://psl.noaa.gov/boulder/boulder.st.hx.html">near the NIST building on the western edge of town since 1990</a>. For the other months, see <a href="https://www.boulderweather.com/post/boulder-weather-by-month/">Boulder weather by month</a>.</p>