Long Island gets increasing clouds and daily highs in the low 40s for the end of the workweek.

The National Weather Service said dry conditions linger through most of Friday before two different systems — high pressure drifting east toward Canada and low pressure over the Midwest — draw in a warm front this weekend for Nassau and Suffolk counties.

Accompanying the warm temperatures, including Sunday when it could be close to 60 degrees, is a storm system that could produce as much as a half-inch of rain on Saturday and three-quarters of an inch more on Sunday.

News 12 Long Island meteorologist Rich Hoffman said the stormy conditions Sunday will have gusty winds and at times heavy rain.

Some wet weather is possible Friday night into Saturday morning, Hoffman said. Overnight lows in the mid 30s are expected, with spotty showers and drizzle continuing into the daytime hours Saturday.

Patchy morning fog will give way to highs in the upper 40s, he said.

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Sunday offers periods of rain and winds from the south southeast at 10 to 20 mph with gusts up to 30.

There’s also a slight chance for a record high temperature, surpassing 56 degrees in 2000, Hoffman said.

During Friday’s morning rush hour, black ice caused some problems for drivers, particularly on the East End, where accidents closed portions of Route 48 in Mattituck and Route 105 in Riverhead.

Accident reports also included Route 24 at Birch Creek Road in Flanders, where at about 7:30 a.m. traffic southbound was closed because of a downed tree and icy conditions, according to the state Department of Transportation.

A Riverhead Town police spokesman said a car hit black ice on Route 105 and went into a guardrail. There were no injuries, he said.

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The service’s Upton office issued a special weather statement during the commute, warning that “motorists may encounter patchy black ice.”