Thursday certainly felt more like early winter with brisk winds and afternoon temperatures struggling in the 30s and lower 40s. It was the start of a multi-day stretch of (finally) below average temperatures. Forecast low temperatures tonight and Saturday night are expected to be well below 32°F with even some values below 20°F possible. The featured chart looks into the frequency of a November hourly temperature being below 20°F for Ames. Such temperatures are not necessarily common for the month with the highest frequency at 7 AM coming in at about 3 days per November per year. The left side labels list out the most recent date with such a cold temperature at that hour.