Today marks the end of meteorological fall and the start of meteorological winter. The morning begins with cold temperatures and frost in many areas.
Despite the chilly start, afternoon highs are expected to be slightly above the normal range for this time of year. This contrast between cold mornings and warmer afternoons is typical for early winter days.
Although the Winter Solstice is still some weeks away, marking the official first day of winter astronomically, meteorologists use calendar months to define the seasons, which is why today is the seasonal changeover.
"Today marks the end of meteorological fall and the beginning of meteorological winter."
The day shows a typical pattern of cold mornings with frost followed by daytime temperatures edging above the seasonal average—a sign of the gradual transition into winter.