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Friday's cold and dry, but rain-snow mix in weekend forecast

Another day of cold, clear conditions is ahead for Long Island before a frontal system brings a stretch of unsettled weather, including a rain-snow mix for the weekend, the National Weather Service said Friday.

The frontal system and high pressure building over the Midwest help deliver moisture starting as early as Saturday afternoon, the service's Upton branch said.

Accumulation across Nassau and Suffolk counties is expected to be less than an inch, with the tip of the South Fork getting slightly more.

Friday's forecast is a near repeat of the past several days, with highs in the mid-40s, a windchill factor making it feel about 10 degrees colder, and a west wind up to 15 mph.

Friday night lows in the mid-20s are expected, with the wind shifting to the northwest and easing up slightly, blowing 5 to 9 mph.

The mix is expected to start Saturday afternoon and last through Sunday. The rain-snow mix is likely to become all rain at times during the day Saturday and again Sunday.

On Saturday, daytime highs are in the mid- to high 40s; on Sunday, daytime highs are in the mid-50s.

With such a warming trend Sunday, the service said patches of dense fog are possible.

Chance of precipitation ranges from 70 percent Saturday to 100 percent Saturday night and Sunday, then dipping to 60 percent Sunday night.

Conditions clear by Monday, with mostly sunny skies and daytime highs in the upper 30s.

By Tuesday, however, quick-moving low pressure could introduce some snow. Chance of precipitation Tuesday night is 50 percent, the service said.

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