Dense fog greeted morning commuters Friday and was expected to linger over some parts of Long Island until early afternoon, the National Weather Service said.
The Upton-based serviced issued a special weather statement, warning of areas of dense fog that limited visibility to between one-half mile and one mile.
The service urged morning drivers to keep their headlights on low beam and to "slow down."
The forecast Friday is cloudy and breezy with highs in the low 60s, and for occasional drizzle before noon, then a chance of sprinkles after noon.
Areas of fog can last until 3 p.m., the service said. Winds from south should be between 15 and 18 mph, with gusts as high as 30 mph.
Tonight calls for a chance showers, with possibly heavier rain after midnight.
The overnight low is expected to be around 50, with a south wind 14 mph to 23 mph and gusts as high as 37 mph.
Chance of precipitation is 90 percent, with new rainfall amounts between one-quarter and one-half inch possible.