Originally uploaded to https://www.youtube.com/watch?v=Ca4ZU1eVeCg by Tony Heller Yesterday was the coldest March afternoon on record in Boulder. The maximum temperature recorded at the NCAR Foothills Lab was 6F. This was five degrees colder than the previous record of 11F set on March 10, 1932. I filmed this on March 4, with the temperature at -2F.