Long Island can expect a stretch of rain, including some thunderstorms, for the next day or so, the National Weather Service said Monday.

After a weekend of mostly blue skies and 80-degree temperatures, Nassau and Suffolk counties face periods of on-again, off-again rain, heavy at times, through Tuesday afternoon, the service's Upton office said.

In a special weather statement, the service said the potential for locally heavy rainfall could "cause widespread minor flooding of urban and poor drainage areas as well as possibly isolated flash flooding."

See alsoCurrent conditions

The weather was causing delays on arrivals and LaGuardia and Kennedy airports, according to the Federal Aviation Administration.

News 12 Long Island meteorologist Rich Hoffman said rain Monday will be more scattered starting in the afternoon hours and into the evening.

Since the air is warm and humid, any showers and storms that develop could mean pockets of heavy downpours, Hoffman said.

advertisement | advertise on newsday

The heaviest rain fell during the morning commute, before 8 a.m. Overall, rainfall amounts Monday are likely to be between one-half and three-quarters of an inch, the weather service said.

Daily high temperatures in the mid- to upper 70s are expected, with south winds from 8 to 14 mph.

Hoffman said there's a chance of another round of heavier rain overnight until about 2 a.m. Tuesday, including some patchy fog. Overnight lows in the low to mid-60s are possible.

@Newsday

Chance of precipitation Tuesday morning is 50 percent, with gradual clearing. Rain lingers until the later afternoon, with a slight chance of showers and mostly cloudy skies.

Highs Tuesday reach into the low 80s, with high humidity. Partly cloudy skies persist but give way to a mostly dry and sunny Wednesday, Hoffman said.