HEAT ALERT: Mostly sunny with dangerous temperatures on Long Island

Long Island will have a bright day with highs near 91.

Rich Hoffman

Jun 23, 2025, 10:41 AM

Updated 2 hr ago

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What's new: Heat breaks late Wednesday into Thursday with showers and Thunderstorms
What's next: Dangerous heat levels Today to Wednesday. Heat wave with highs near 90 and feels like temperatures 95 to 106.
Today: Heat Advisory. Mostly sunny, with a high near 91. Heat index values as high as 106. Calm wind becoming south 5 to 10 mph in the afternoon. UV Index is very High. Record High is 91 set 1999.
Tonight: Mostly clear, with a low around 72. South wind 5 to 10 mph.
Tuesday: HEAT ADVSIORY: Record high possible. Mostly sunny, with a high near 96. Heat index values as high as 106. Calm wind becoming southwest 5 to 15 mph in the afternoon. All time June record high is 96. Record high is 96 set in 1996, which is record high for day and the month.
Tuesday Night: Mostly clear, with a low around 75. West wind around 5 mph becoming calm in the evening.
Wednesday: Mostly sunny, with a high near 92. Some scattered late day thunderstorms. Record High is 92 set in 2003.
Wednesday Night: A few scattered showers and thunderstorms. Mostly cloudy, with a low around 68.
Thursday: The extreme heat is over. A few scattered showers. Partly sunny, with a high near 82.
Thursday Night: A 40% chance of showers. Mostly cloudy, with a low around 64.
Friday: A few showers. Mostly cloudy, with a high near 76.
Friday Night: A 40% chance of showers. Mostly cloudy, with a low around 65.
Saturday: A 40% chance of showers. Mostly cloudy, with a high near 80.
Saturday Night: A 30% chance of showers. Mostly cloudy, with a low around 66.
Sunday: Mostly cloudy, with a high near 82.