Rapid Warm-Up Forecast Across Much of the Lower 48 Today and Tuesday

Most of the U.S. starts the week calm and unseasonably warm. The Heartland will be warmest, with highs 25–30° above average. Only the Gulf Coast stays chilly. Rain today is limited to western Washington while lake effect snow continues east of Lake Ontario. Cooler air returns after Tuesday, bringing a wintry mix to the Midwest and Northeast by Wednesday. Read More >

Last Update: 430 PM EST Mon Jan 12 2026

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Key West, FL Local Forecast Office

23NM N Smith Shoal Light FL

Marine Zone Forecast

Tonight

Northeast winds 10 to 15 knots. Seas 3 to 5 feet, subsiding to 2 to 4 feet, occasionally to 5 feet. Wave detail: northwest to north 4 feet at 8 seconds and northeast 2 feet at 4 seconds. Isolated showers.

Tuesday

Northeast winds near 10 knots, decreasing to 5 to 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. Wave detail: north 2 feet at 5 seconds. Isolated showers.

Tuesday Night

North to northeast winds 5 to 10 knots. Seas 1 to 2 feet. Wave detail: north to northeast 2 feet at 5 seconds. Isolated showers.

Wednesday

North winds near 5 knots. Seas around 1 foot. Scattered showers.

Wednesday Night

Northwest winds 5 to 10 knots, becoming west 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. scattered showers.

Thursday

West to northwest winds 15 to 20 knots, increasing to 20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet, building to 4 to 6 feet, occasionally to 8 feet. Scattered showers and isolated thunderstorms.

Thursday Night

Northwest to north winds 15 to 20 knots, decreasing to near 15 knots. Seas 5 to 8 feet, occasionally to 10 feet. Isolated showers.

Friday

North to northeast winds 10 to 15 knots, decreasing to near 10 knots. Seas 5 to 7 feet, occasionally to 9 feet.

Friday Night

Northeast winds 5 to 10 knots. Seas 3 to 5 feet, occasionally to 6 feet.

Saturday

North to northeast winds near 10 knots. Seas 2 to 3 feet.

Saturday Night

North winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet.