Light snow is in the overnight forecast for southwestern Connecticut, which is expected to change to freezing rain sometime early tomorrow, creating treacherous travel conditions, the National Weather Service warns in a "Hazardous Weather Outlook."

Until then, sunny skies should prevail across the region today, the NWS predicts, with a daytime high of about 23 degrees.

Snow is expected to begin falling late tonight or early tomorrow, but the temperature should rise to about 30 degrees. The accumulation of snow will be an inch or less, according to the forecast.

The snow will change to freezing rain tomorrow morning and continue to about 3 p.m., gradually becoming rain as the temperature rises to 36 degrees. The wind will pick up to between 11 and 14 mph.

Rain will keep falling until about 9 p.m. tomorrow. It will be cloudy with a nighttime low of about 32 and a north wind between 8 and 14 mph.

On Wednesday, there is a chance of rain and snow before noon, then a slight chance of rain between noon and 3 p.m., the NWS says. The day will be mostly cloudy, with a high near 42. A west wind will be clocked between 10 and 15 mph.

Thursday should be partly sunny, with a high near 29.