As the season's first winter chill sets in Thursday, some snowflakes are in the forecast.
Snow showers, perhaps mixed with rain, are possible Sunday, especially in the northern Baltimore suburbs. A disturbance in the atmosphere is expected to pass north of the region, bringing some light moisture with it.
Then Sunday night and into Monday morning, a warm front is expected to move up from the south. The air cold be cold enough that precipitation along the front might fall as snow.
Some precipitation could also fall as freezing rain, or as what meteorologists call plain rain.
"We're not looking at any significant accumulations," said Andrew Snyder, a meteorologist with the National Weather Service's Baltimore/Washington forecast office.
The first trace of frozen precipitation this season was recorded at Baltimore/Washington International Thurgood Marshall Airport on Tuesday.
Baltimore has typically already seen its first traces of snow by this time of the season. From 2012-2014, the first trace of snow was observed at , the region's point of record, Nov. 12 or 13.
Last year, the first trace of snow didn't fall at BWI until Dec. 19.
On average, Baltimore gets its first measurable snow -- defined as at least 0.1 inches -- by Dec. 14, according to a Weather Channel analysis of National Weather Service data.
The chance for wintry precipitation comes as temperatures plummet to their lowest levels since last February.
Low temperatures are forecast in the 20s this weekend, several degrees below average for this time of year.
Daytime highs might only reach the upper 30s and lower 40s over that stretch, as much as 10 degrees below normal.
The region hasn’t experienced that sort of cold since mid-February, with a high of 39 degrees and low of 18 degrees Feb. 19.