A freeze warning is in effect for Nassau County. Protect any sensitive plants outdoors. Temperatures across Long Island overnight will be in the 20s to near 30 degrees. Wind chills will be near 20 degrees.

Wednesday will be picture perfect, with lots of sunshine. It will be chilly, with highs near 48 degrees and northwest winds 10 to 15 mph.

Temperatures begin to warm up on Thursday, with highs in the 50s and increasing clouds through the day. Rain showers arrive at night and continue into Friday.

An even better chance for rain comes Friday night, with some heavy showers expected overnight.

The heavy and steady rain will end by Saturday morning, with some clouds and showers lingering to kick off the weekend.

Sunday will be partly sunny, dry and warmer with highs in the upper 50s.

OVERNIGHT: Mostly clear and breezy at times. Cold, with lows near 28 degrees. Feels-like temperatures near 20 degrees. Northwest wind 10 to 20 mph. Sunrise: 6:23 a.m.

WEDNESDAY: Sunny and beautiful. Still chilly and breezy at times. Highs near 47 degrees. Northwest winds 10 to 20 mph. Sunset: 7:26 p.m. Mostly clear and chilly at night, with lows near 37.

THURSDAY: Partly sunny and a touch warmer, with less wind. Becoming mostly cloudy with the chance for rain showers by the evening. Highs near 52 degrees. Cloudy with a good chance of rain showers at night. Lows near 42 degrees.

FRIDAY: Cloudy, with scattered showers likely. Chance for heavy rain at night. Highs near 55 degrees. Lows near 45 degrees.

SATURDAY: Mostly cloudy, with a chance for rain showers mostly early in the day. Mild, with highs near 57 degrees. Lows near 43 degrees.

SUNDAY: Partly sunny and milder, with highs near 58 degrees. Lows near 44 degrees.

MONDAY: Mostly sunny and nice, with highs near 61 degrees. Lows near 47 degrees.