A severe thunderstorm watch is in effect for Long Island until 7 p.m. Thursday, the National Weather Service said.

Thunderstorms are expected to form to the west and head east/southeast. These storms may move through the city and Long Island, potentially bringing with them damaging winds and hail, weather service meteorologist Faye Barthold said.

Meanwhile, the forecast is for warm and humid conditions, with daily highs slightly above normal, forecasters said.

See alsoCurrent conditions

Daily highs in the mid to upper 70s and southwest winds from 9 to 13 mph also are expected.

News 12 Long Island meteorologist Rich Hoffman said spotty showers and storms are possible as the trend of above normal daily high temperatures continues.

Mostly, warmer temperatures Thursday will be inland and toward the North Shore, with some parts of northern Nassau expected to push to 80 degrees, Hoffman said.

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Winds shifting slightly more south during the afternoon will help keep things a bit cooler on the South Shore, he said.

Clouds develop at night with gradual clearing toward Friday morning. Overnight low temperatures in the low to mid 60s are expected.

Friday calls for another day in the mid to upper 70s, but Hoffman said it will be less humid with slightly cooler temperatures on the South Shore.