Beautiful weather continues this evening, but it will become chilly! Have a heavier coat with you. The wind will be light, and it will stay dry with just patchy clouds moving in.

Temperatures can drop quickly in eastern Suffolk County tonight. There is a frost advisory in effect from 11 p.m. tonight until 9 a.m. Saturday for eastern Suffolk County. Protect plants from the colder weather! Temperatures in this area can be as cold as the mid-20s to low 30s into early Saturday morning. You will likely wake up to frost in these areas and may need a few extra minutes to warm up the car.

Most of Long Island will reach low temperatures of around the upper 30s to lower 40s into early Saturday morning, which will still be worthy of having a heavier coat with you overnight and into the morning.

A coastal flood statement, the lowest of all coastal flooding alerts, will be in effect from 5 a.m. to 9 a.m. Saturday for the back bays of southern Nassau County during the morning high tide. At worst, one-half foot of inundation is possible right along the waterfront and shoreline. This will not be a major issue, but is worth the mention if you live in these areas.

No matter what you have planned outdoors this weekend, the weather will be nice other than cold-feeling starts to the mornings. Both Saturday and Sunday will be dry with highs in the lower to middle 60s - enjoy!

Saturday morning will bring a chilly start for athletes participating in the Northwell Ironman 70.3 at Jones Beach. Temperatures will begin in the 40s, with a mix of sun and clouds. It will remain dry, with a light wind under 15 mph. Temperatures will get into the upper 50s to low 60s during the event. Just remember to dress warmly if you're heading out early to watch or cheer on the athletes, as it will feel quite chilly before temperatures begin to warm up.

Fall colors are starting to pop a bit more across Nassau and Suffolk Counties. If you get any nice foliage photos, send them our way on social media if you can!

TONIGHT: Becoming partly cloudy. Otherwise, calm with a light wind and a cold feel into early Saturday morning. Low temperatures will mostly be in the mid-30s to lower 40s, but temperatures may drop into the 20s in and around the Pine Barrens and Hamptons late tonight. Have a heavier coat. Patchy frost is likely, especially in eastern Suffolk County. Wind: northeast 5 to 10 mph.

SATURDAY: After a cold start to the morning, it will be nice with a mix of sun and clouds. High temperatures will be around the upper 50s to lower 60s. Wind: northeast-northwest 5 to 10 mph. Lows near 38 degrees with more patchy frost into Sunday morning.

SUNDAY: Cold again to start the morning. Otherwise, sunny with highs around 64 degrees. Lows near 42 degrees.

MONDAY: Sunny and nice with highs around 66 degrees. Lows near 48 degrees.

TUESDAY: Mostly sunny. Highs around 58 degrees. Lows near 40 degrees.

WEDNESDAY: Sun and clouds. Highs around 57 degrees. Lows near 43 degrees.

THURSDAY: Sun and clouds. Highs around 62 degrees. Lows near 52 degrees.

FRIDAY: Sun and clouds. Highs near 66 degrees. Lows near 49 degrees.