Big changes are happening as a developing nor'easter passes south of the city today. Yesterday's high in Central Park hit 61 degrees, while tomorrow morning's low is expected to be in the mid teens. In between those two temperature extremes we have to put up with a bit of snow this morning and gusty northwesterly winds tonight.
The snow should mostly end by early afternoon, with a couple of inches piling up in the city. The lower Hudson Valley, where the air and ground are cooler, and eastern Long Island, which is closer to the storm, will see higher amounts.
As the storm races toward the Canadian Maritimes it will start pulling frigid Arctic air our way. The temperature will hold to the mid 30s until late afternoon before it plunges toward the teens tonight. That's cold for January, let along mid-March. Highs on Saturday and Sunday will only reach the upper 20s. Wind chill values will be in the single digits for much of the weekend, which is almost appropriate on the anniversary of the Blizzard of 1888.
The late season surge of winter weather continues into early next week. Although there is still a lot of uncertainty in the forecast models, early signs are pointing to a significant, potentially major, snowstorm starting Monday night and lasting well into Tuesday. Stay tuned!