Light rain forecast for later today may morph into more violent weather tomorrow across southwestern Connecticut, the National Weather Service warns.

Today's rain is expected to start falling after 3 p.m. as the high temperature crests in the low-40s. Rain is likely overnight, according to the NWS, with patchy fog in the early-morning hours. That rainfall may total between one-half and three-quarters of an inch.

But things get a lot dicier after 9 a.m. tomorrow, according to the forecast.

A front moving into the region not only will trigger heavy rain, but could spark thunderstorms and high winds as well.

Even though the daytime high temperature may reach into the low-50s, the rain could be driven by winds that register between 23 and 26 mph, with gusts as high as 50 mph.

The possibility of rain remains in the forecast until 9 p.m. tomorrow, as clouds gradually clear out and the temperature falls into the mid-20s. It will be breezy, with a west wind between 13 and 23 mph, gusting as high as 47 mph.

Saturday will be partly sunny, the NWS says, with a high near 35. The winds will calm, measured at only 5 to 9 mph. But overnight, there is a slight chance of snow after midnight.

Light snow is still possible Sunday before noon. The day is expected to be mostly cloudy, with a high near 40 degrees.