It felt more like late March than mid-May across the Midwest and the interior mid-Atlantic on Sunday and Monday as cold Canadian air penetrated the United States once again this spring.
This cold snap began early on Saturday afternoon when a cold front pushed through the Great Lakes. Cold air filtered in behind this front and was accompanied by rain and snow showers that lasted into Sunday morning across Michigan and Wisconsin.
While temperatures fell to below 40 as far south as Arkansas and as far east as New York, snow through Sunday morning accumulated up to 5.5 inches in Sault Ste Marie, Mich.
These cold temperatures pushed eastward on Mother's Day with highs in the Ohio Valley running 15 degrees below normal. High temperatures ran as cold as 10 degrees below normal around this area from Minnesota through Mississippi and up into Pennsylvania.
With a mainly clear sky and low winds on Sunday night, record lows were set from Illinois to Tennessee and into Virginia with another night of sub-40 temperatures.
Kenton, Mich., dropped as low as 17 degrees F on Monday morning, while Silver Bay, Minn., plummeted to 18 degrees F on Monday morning.
This record-challenging cold continued through Tuesday with the coldest air being centered over central Pennsylvania and southwestern New York.
With temperatures forecast to dip to or below freezing both on Monday and Monday night, farmers and homeowners were forced to take extra precautions to ensure that their plants do not get harmed from the freezing temperatures.
The good news is that relief from these unseasonably cold temperatures is on the way.
A warm front lifted across the central Plains on Tuesday, allowing warmer air to surge in. Places that saw temperatures below freezing over the weekend saw temperatures go above 90 and even 100 in some places.
With this front taking aim at the Northeast on Wednesday, the cold temperatures will be forced to retreat into New England.
A storm system responsible for severe weather across the Plains over the past week, as well as the snow across the Rockies will advance eastward.
The Highway Fire started around 6:10 p.m. PDT Saturday near Corona, California, in the Prado Dam area in Riverside County, and grew from 30 to 175 acres in a matter of three hours.
For the second half of the weekend and into the week, rain and wind will replace the pleasant, sunny conditions of the first part of the weekend.
After a steady rain closes out the weekend, more showers and cooler air will persist through much of the week.
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.
Watertown, OH (1901)
April 19-21, 45 inches of snow - state record.
El Paso, TX (1971)
4" of snow -- late season record.
Providence, RI (1976)
Second day of early season heat wave, 98 degrees in northeastern part of the city.