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STORM WATCH: Scattered showers this evening ahead of a thunderstorm threat Tuesday

Unsettled weather will impact Long Island through Thursday, but there will be some dry time mixed in ahead of Labor Day Weekend.

Matt Hammer

Aug 31, 2026, 5:36 PM

Updated

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STORM WATCH HEADLINES

Tonight through Thursday on Long Island will feature scattered showers and thunderstorms. The best thunderstorm chances will be Tuesday evening and Thursday. No day will be a complete washout, but expect more clouds than sun each day, with scattered off and on showers in between those storm chances.
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Here is a look at the thunderstorm risks for Tuesday. Long Island is in a risk level 1 of 5. This means a couple of isolated storms, mostly Tuesday mid-evening, can be strong to severe, with damaging wind gusts, heavy rain, frequent lightning and small hail. Stay with the News 12 Storm Watch Team for updates to this chance tonight through Tuesday.

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THIS EVENING AND OVERNIGHT

There isn't too much rain this evening, but keep an umbrella with you. It is mainly cloudy, with a few light rain showers. You will see a few breaks in the clouds at times. Warm and a bit humid, with temperatures in the low to mid-70s.

Overnight, it will be cloudy, with scattered showers and areas of fog. A downpour or isolated thunderstorm cannot be ruled out into Tuesday morning, with low temperatures in the mid- to upper 60s.

FUTURECAST

Here is a look at the hour-by-hour weather conditions projected for Long Island, showing the scattered midweek rain and thunderstorm chances.

BEACH AND BOATING FORECAST

Long Island Rip Currents

Take a look at the new beach and surf forecast - plus a look at the tides here

EXTENDED FORECAST

TONIGHT: Mostly cloudy, with scattered rain showers. An isolated downpour or brief thunderstorm is possible into Tuesday morning. Lows in the mid- to upper 60s and noticeably humid. Wind: southeast to southwest around 5 to 15 mph.

TUESDAY: STORM WATCH - Scattered showers, with a couple of downpours and thunderstorms possible in the morning. Then, more dry than wet midday, with breaks of sun and a spotty shower chance. Highs around the upper 70s to near 80 and humid. A round of heavier thunderstorms is possible after 6 p.m. These scattered storms can have heavy rain, gusty wind, hail and frequent lightning. The timing as of Monday evening's forecast for evening storms is around 7 p.m. to 11 p.m., but this exact timing may change slightly. Lows near 65, with drier weather overnight, although there will be a chance for a passing shower under a mainly cloudy sky.

WEDNESDAY: Mostly cloudy, with a couple of passing rain showers. As of Monday evening's forecast, thunderstorms are expected to remain north and west of Long Island, but this will be monitored ahead of Wednesday. Highs around 75. Lows near 67.

THURSDAY: POSSIBLE STORM WATCH -- Partly sunny to mostly cloudy, with a few scattered showers and thunderstorms. Highs around 83. Lows near 67.

FRIDAY: Sun and clouds. Highs around 79. Lows near 62.

SATURDAY: Sun and clouds. Highs around 76. Lows near 59.

SUNDAY: Sun and clouds. Highs around 74. Lows near 60.

MONDAY: LABOR DAY -- Sun and clouds. Highs around 75. Lows near 60.

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TROPICAL WEATHER UPDATES
Check out our new tropical weather page

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