Showers tonight usher in cooler weather for the weekend
A cold front crosses Long Island this evening with scattered showers and an isolated thunderstorm, followed by a dry and noticeably cooler Saturday. Another round of showers is possible Sunday afternoon and night before the coolest air of the season arrives early next week.
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What to expect:
Scattered showers move across Long Island this evening, with a locally heavy downpour and isolated thunderstorm possible.
Rain ends overnight as much cooler and drier air moves in.
Saturday is the better weekend day: mostly sunny, breezy and considerably cooler.
Clouds increase Sunday with another chance of showers developing during the afternoon and continuing Sunday night.
An even stronger push of cool Canadian air arrives early next week, with highs struggling to reach 60 Tuesday and Wednesday and nighttime temperatures falling into the 40s in many locations.
Tonight (Lows: Upper 50s to Lower 60s)
Scattered showers move from west to east across Long Island this evening as a cold front crosses the area. An isolated thunderstorm is possible, and a few showers could briefly produce a heavier downpour. Rain gradually tapers off from west to east overnight, followed by falling temperatures and a shift to a cooler northwest breeze.
Saturday (Highs: Mid- to Upper 60s)
A noticeable change. Mostly sunny, breezy and much cooler with lower humidity. Temperatures will be roughly 10 to 15 degrees cooler than Friday in some locations, making it feel much more like October. North winds around 10 mph will add to the cooler feel.
Saturday Night (Lows: Lower to mid-50s)
Mostly clear to partly cloudy and chilly with light winds. Temperatures fall well into the 50s across Long Island.
Sunday (Highs: Lower to mid-60s)
Some sunshine is possible early, but clouds will steadily increase as an area of low pressure approaches from the south. Showers may begin developing during the afternoon, especially after about 2 p.m. and particularly across coastal portions of the Island.
Sunday Night (Lows: Mid- to upper 50s)
Cloudy with periods of showers possible. Current indications suggest rainfall will generally be light, and significant impacts are not expected. There is still some uncertainty concerning how closely the developing wave of low pressure passes to Long Island.
Monday (Highs: Mid- to upper 60s)
Any lingering clouds or early showers give way to increasing sunshine. A reinforcing cold front moves through later in the day, opening the door for a much colder air mass Monday night.
Monday Night (Lows: Mid- 40s to around 50)
Mostly clear, breezy and considerably colder. Temperatures fall into the 40s across much of Long Island as Canadian high pressure begins building into the region.
Tuesday (Highs: Upper 50s to around 60)
Sunny, breezy and quite cool. This will likely be the coolest daytime air of the season so far, with afternoon temperatures struggling to reach 60 degrees in many locations—around 10 degrees below normal.
Wednesday (Highs: Upper 50s to lower 60s)
Another sunny, crisp fall day with very low humidity and temperatures remaining well below normal.
