A highly amplified ridge over Western North America is causing a trough to deep over Eastern North America. This pattern will transport a cold airmass over the Hudson Bay region to into the Northeast Untied States this weekend. This will not be mid-winter cold. But we will be seeing some cold temperatures that we don’t see often here in October. Some precautions will also be needed to protect growing vegetation this weekend, as a first freeze for parts of the tri-state area is also likely.

During the day Saturday 850mb temperatures will between -3 and -5 degrees Celsius. This will support high temperatures in the lower to middle 50s with mostly sunny skies. A colder airmass will arrive Saturday night with 850mb temperatures between -6 and -9 degrees Celsius with breezy northwest winds. Some interior locations may see their first freeze, as temperatures there drop into lower to middle 30s on Saturday night. Near the coast, temperatures will likely only fall into upper 30s or lower 40s.

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