Cold, windy conditions continue Tuesday across Long Island, the National Weather Service said.

The bitter cold is largely because of wind chill values, the service’s Upton office said.

Daily highs across Nassau and Suffolk counties will be in the mid-20s. But winds from the northwest at 18 to 25 mph, with gusts to more than 40 mph, will make it feel much colder.

WeatherLatest forecastTravelLive: Traffic map

Wind chill values Tuesday morning made it feel as cold as zero at Long Island MacArthur Airport, the service said.

Skies will be sunny and remain clear through the nighttime hours; overnight lows will range from the midteens to low 20s, with wind chill values making it feel as cold as zero.

News 12 Long Island meteorologist Rich Hoffman said it will be cold at the bus stops and on the train platforms for most of the week and that temperatures will remain below normal into the weekend, when a major storm system could bring heavy snow to the region.

advertisement | advertise on newsday

He said Wednesday works out to be a mix of sun and clouds, with winds from the west northwest subsiding some, at 5 to 15 mph. Highs will be in the mid-30s, with a slight chance of light flurries during the nighttime hours.

The Town of Hempstead said it would open 16 warming centers starting Tuesday and through Friday.