After a beautiful, cool Monday afternoon, it will be partly cloudy through the evening and overnight. Temperatures will be in the 50s this evening - have a jacket - and cool into the upper 40s with breezy conditions overnight. It will be noticeably chilly into Tuesday morning.

It will stay dry this week, but an offshore Nor'easter (coastal storm) will bring some windier weather and rough surf to Long Island from Tuesday through early Thursday. Even though the center of the storm is staying well offshore, its wind field will still bring northeast gusts of around 20 to 35 mph to Long Island. The highest gusts in the 30-mph range will mostly be along the shoreline and East End of Long Island. That's not necessarily damaging wind, but it will be annoying at times. Just expect decent, but windy and cool weather midweek.

This offshore storm will also bring rough surf along Long Island’s South Shore. Waves could build to around 5 to 10 feet, creating pounding surf and the potential for some beach erosion. Coastal communities, especially along the South Shore and East End, should keep an eye on conditions as we head through the middle of the week. Beach erosion and minor coastal flooding are possible Wednesday into Thursday. Right now, the tide that would be impacted with the best chance for some minor coastal flooding would be Wednesday p.m.

TONIGHT: Partly cloudy, breezy and chilly. Wind: northeast 10 to 20 mph. Lows will be in the mid-to-upper 40s into early Tuesday morning.

TUESDAY: Partly sunny, breezy and comfortable. Highs will be in the mid-60s in the afternoon. Wind: northeast 15 to 30 mph. Overnight lows will be near 46 degrees.

WEDNESDAY: Sun and clouds. Windy with some northeast gusts around 20 to 35 mph. Some minor coastal flooding is possible during the p.m. high tide cycle, as well as rough surf along the South Shore. Highs near 59 degrees. Lows near 43 degrees.

THURSDAY: Mostly sunny. Becoming less windy, but still breezy. Highs around 63 degrees. Lows near 45 degrees.

FRIDAY: Mostly sunny and cool, but nice. Highs around 58 degrees. Lows near 40 degrees.

SATURDAY: Mostly sunny with highs again around 58 degrees. Lows near 42 degrees.

SUNDAY: Mostly sunny with highs around 63 degrees. Lows near 41 degrees.

MONDAY: Sun and clouds. Highs around 67 degrees. Lows near 49 degrees.