Colder than normal temperatures are expected throughout the day across...

Colder than normal temperatures are expected throughout the day across Long Island on Oct. 20, 2014. Credit: / wunderground

A chilly Monday with a near-record low temperature gives way to cool conditions on Long Island, with rain in the forecast for the middle of the week, the National Weather Service said.

The service's Upton office recorded 35 degrees at Long Island MacArthur airport at 6 a.m. Monday, just shy of the record daily low of 34 in 2009, said meteorologist David Stark.

The coldest spot on Long Island was Westhampton, which unofficially posted a temperature of 28 degrees at 4:44 a.m., Stark said.

Stark said the morning marked the coldest day so far for the fall season.

Monday calls for daily highs in the mid to upper 50s, with a 30 percent to 40 percent chance of rain early Tuesday.

Starting Tuesday, a southerly wind will help drive temperatures a bit milder, before clouds and cooler conditions dominate.

Rain is likely Tuesday night into Thursday with a lesser chance for Friday before clearing up for the weekend, the service said.

Temperatures are expected to remain in the 50s and low 60s through the week.

The service's Upton office issued a frost advisory for most of Suffolk County until 9 a.m. Monday.

The advisory covered portions of Suffolk east of the William Floyd Parkway, as well as south of the Long Island Expressway from the Nassau County border to the east.

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