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STORM WATCH: Severe thunderstorm watch issued for Long Island until 9 p.m.

Scattered downpours and thunderstorms with gusty wind and small hail will continue to impact Long Island until around 9 p.m.

Matt Hammer

May 20, 2026, 4:22 PM

Updated

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Long Island Weather Alerts

Weather Alerts for Nassau & Suffolk Counties

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SCATTERED STRONG STORMS THIS EVENING

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR LONG ISLAND UNTIL 9 P.M. FOR THE RISK OF STRONG TO SEVERE THUNDERSTORMS WITH DAMAGING WIND GUSTS, SMALL HAIL, HEAVY RAIN AND FREQUENT LIGHTNING.

A severe thunderstorm warning was issued for parts of northern Suffolk County until 5:15 p.m.

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Another hot summer-like day, be prepared to slow travel abruptly as scattered thunderstorms move across Nassau and Suffolk Counties. Scattered power outages are likely with any storm in addition to ponding of water. News 12 will continue to have updates on these storms on-air, on social media and on the News 12 app.

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COOLER WITH SHOWERS LINGERING THURSDAY

You will notice a big drop in temperatures for the end of the week and into Memorial Day Weekend following the summer-like heat we had to start the week. You should keep a rain jacket and umbrella with you Thursday, too as clouds and showers will linger through at least mid-afternoon with high temperatures in the middle to upper 60s. It will dry out more for Thursday evening.

MEMORIAL DAY WEEKEND

Unfortunately, the weather for the upcoming holiday weekend continues to not look good with periods of rain. The wettest day still looks to be Saturday, but scattered rain showers can still be around Sunday and Monday with temperatures warming back up into the 70s by Monday.

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EXTENDED FORECAST

TONIGHT: STORM WATCH -- Scattered strong to severe thunderstorms this evening. Use caution traveling. The storm risk diminishes after 9 p.m. Cloudy with scattered rain showers overnight. Lows near the upper 50s to low 60s.

THURSDAY: Mostly cloudy with periods of rain showers through mid-afternoon. Then, mostly cloudy and drier into the evening. Much cooler, too with high temperatures around 68 degrees. Lows near 51 degrees.

FRIDAY: Partly sunny to mostly cloudy. Highs around 66 degrees. Lows near 50 degrees.

SATURDAY: Cloudy with periods of light to moderate rain showers. Highs around 62 degrees. Lows near 50 degrees.

SUNDAY: Mostly cloudy with scattered rain showers possible. Highs around 65 degrees. Lows near 54 degrees.

MONDAY: MEMORIAL DAY -- Mostly cloudy with a few showers likely. Not a washout at this time. Highs around 72 degrees. Lows near 57 degrees.

TUESDAY: Partly sunny to mostly cloudy. Highs around 74 degrees. Lows near 56 degrees.

WEDNESDAY: Mostly sunny and warmer with highs around 78 degrees. Lows near 59 degrees.

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