Ice-slick road surfaces and sidewalks are a hazard across southwestern Connecticut this morning in the aftermath of light overnight precipitation that has frozen on the ground.

Otherwise, the National Weather Service says, skies today will be mostly sunny as the temperature rises to a high in the upper-30s. There will be a light northwest wind about 10 to 15 mph in the morning, with gusts as high as 25 mph.

Tonight will be mostly clear, with a low temperature in the upper-teens and a northwest wind 5 to 11 mph.

Tomorrow will be partly sunny, with a high temperature in the upper-20s.

Overnight tomorrow, however, snow is likely in the early morning hours of Friday. The temperature will dip to a low in the mid-20s, with an east wind 7 to 9 mph. Chance of precipitation is 60 percent; new snow accumulation of less than one inch is possible, the NWS says.

On Friday, snow is likely before noon, then changing to rain, as the temperature rises to a high of about 40 degrees. Chance of precipitation is 80 percent. A mix of rain and snow is likely early Friday night, then changing to all snow after 9 p.m. Chance of precipitation is 70 percent; new precipitation amounts between three-quarters and one inch possible.

There is a chance of snow before noon Saturday, under mostly sunny skies and temperatures rising to the low-30s. Nighttime should be mostly clear, with the temperature dipping to a low in the mid-teens.

The outlook for Sunday, according to the weather service, is sunny and temperatures in the 30s.