January is ending with waves of frigid air taking aim at Washington, D.C.
The first impending blast of cold air moved in Saturday night with brisk winds dropping AccuWeather.com RealFeel® temperatures to plummet into the single digits.
Sunday's high will be held to the upper 20s underneath times of clouds and sunshine.
Temperatures will briefly spike into the upper 30s and a couple of flurries will fly on Monday as another clipper system passes through the Northeast.
In the wake of this clipper, even colder air will arrive and challenge the frigid days from earlier this January for the coldest daytime highs and nighttime lows so far this winter.
AccuWeather.com meteorologists are monitoring the possibility of snow grazing the Northeast coast at midweek with the cold air in place.
The Bay area will see pleasant conditions hold into the new week with plenty of sunshine and comfortable temperatures.
A repeat of Saturday's warmth is not expected anytime soon in Pittsburgh with the weather taking a wet and cooler turn.
A repeat of Saturday's warmth is not expected anytime soon in New York City, with the weather taking a cooler, then wet turn.
A pattern favoring waves of progressively cooler air will set up across much of the Midwest and Northeast during next week and could continue into early May.
Round after round of drenching rain will continue to cause flooding in the South, while another dose of rain may renew flooding in the Ohio Valley this weekend.
Ahead of the monsoon season in India, temperatures will swell well above normal in parts of India and Pakistan.
Wyoming, South Dakota (1966)
24" of snow and blizzard conditions in South Dakota. 20" of snow at Lander, Wyoming.
Rapid City, SD (1970)
22" of snow (17th-18th) -- 24-hour record.
Heat wave in Northeast -- 95 degrees in Washington, DC, tied April record. 94 degrees in Philadelphia, PA.