SXUS41 KBTV 181823 RECBTV Recreational Forecast National Weather Service Burlington VT 223 PM EDT Mon May 18 2026 .The Forecast for the Northern Waters of Lake Champlain, including Malletts Bay, the Inland Sea, and Isle La Motte... .TONIGHT...North winds 5 to 15 knots, becoming south 15 to 20 knots. Partly cloudy. A slight chance of showers and thunderstorms overnight. Waves 1 to 2 feet. .TUESDAY...South winds 15 to 20 knots, becoming southwest 10 to 15 knots. Partly sunny. A chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Waves 1 to 2 feet. .TUESDAY NIGHT...Southwest winds 10 to 15 knots, becoming south 15 to 20 knots. Partly cloudy. A chance of showers in the evening, then a chance of showers and thunderstorms overnight. Waves 1 to 2 feet. .WEDNESDAY...Southwest winds 15 to 20 knots, becoming northwest. Partly sunny. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Northwest winds 15 to 20 knots, diminishing to 10 to 15 knots. Mostly clear. Waves 1 to 2 feet. .THURSDAY...Northwest winds 5 to 10 knots. Mostly sunny. Waves 1 foot or less. .THURSDAY NIGHT...Northwest winds 5 to 10 knots, becoming light and variable. Mostly clear. Waves 1 foot or less. .FRIDAY...Light and variable winds. Partly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Light and variable winds. Partly cloudy. Waves 1 foot or less. .SATURDAY...Light and variable winds. Partly sunny. A chance of showers. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. && .The Forecast for the Broad Waters of Lake Champlain, including Colchester Reef, Valcour Island, and Cumberland Bay... ...A LAKE WIND ADVISORY IS IN EFFECT... .TONIGHT...South winds 5 to 10 knots, increasing to 15 to 25 knots. Partly cloudy. Waves 1 to 2 feet. .TUESDAY...South winds 15 to 25 knots, becoming southwest and diminishing to 5 to 15 knots. Partly sunny. A slight chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Waves 1 to 2 feet. .TUESDAY NIGHT...Southwest winds 10 to 15 knots, becoming south and increasing to 15 to 25 knots. Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms overnight. Waves 1 to 2 feet. .WEDNESDAY...South winds 15 to 20 knots, becoming northwest. Partly sunny. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Northwest winds 15 to 20 knots. Mostly clear. Waves 1 to 2 feet. .THURSDAY...Northwest winds 10 to 15 knots, becoming north. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...Northwest winds 5 to 10 knots, becoming light and variable. Mostly clear. Waves 1 foot or less. .FRIDAY...Light and variable winds. Partly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Northeast winds less than 10 knots. Partly cloudy. Waves 1 foot or less. .SATURDAY...Light and variable winds, becoming southeast 5 to 10 knots. Partly sunny. A chance of showers. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. && .The Forecast for the Southern Waters of Lake Champlain, including Willsboro and Shelburne Bays, and Diamond Island... .TONIGHT...South winds 5 to 10 knots, increasing to 15 to 20 knots. Mostly clear. Waves 1 foot or less. .TUESDAY...South winds 15 to 20 knots, becoming west 5 to 15 knots. Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Waves 1 foot or less. .TUESDAY NIGHT...Southwest winds around 10 knots, becoming south and increasing to 15 to 25 knots overnight. Partly cloudy in the evening, then becoming mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY...South winds 10 to 15 knots, becoming northwest 15 to 20 knots. Partly sunny. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Northwest winds 15 to 20 knots, becoming north 10 to 15 knots. Mostly clear. Waves 1 to 2 feet. .THURSDAY...North winds 15 to 20 knots, diminishing to 10 to 15 knots. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...North winds 5 to 10 knots, becoming light and variable. Mostly clear. Waves 1 foot or less. .FRIDAY...Light and variable winds. Partly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Northeast winds less than 10 knots. Partly cloudy. Waves 1 foot or less. .SATURDAY...Light and variable winds. Mostly cloudy. A chance of showers. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. The ultraviolet index for Tuesday will be a 7. This is in the high category. Latest Level and Temperature Data from Around Lake Champlain Level Temperature USGS gage at Rouses Point NY 97.11 feet 54 degrees USGS gage at Burlington VT 97.09 feet 48 degrees USGS gage at Port Henry NY 97.14 feet 51 degrees Early in the boating season, water temperatures on rivers, ponds and lakes remain rather cold. Immersion in cold water can be life threatening very quickly due to hypothermia and the bodies inability to work efficiently in the cold water. Therefore, it is recommended to consider postponing small craft boating activities until water temperatures become warmer. However, if you choose to venture out, wear all recommended cold water protective gear, including a life jacket, in the event of an accident. && .The Higher Summits Forecast for the Northern Adirondacks of New York... .TONIGHT...Clear until midnight, then becoming partly cloudy. Lows in the lower 60s. Southwest winds 30 to 45 mph with gusts up to 60 mph, becoming west and increasing to 40 to 55 mph with gusts up to 75 mph after midnight. .TUESDAY...Cloudy. A slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 70s. West winds 40 to 55 mph with gusts up to 75 mph, diminishing to 25 to 40 mph with gusts up to 55 mph in the afternoon. .TUESDAY NIGHT...Mostly cloudy until midnight, then becoming obscured in clouds. A chance of showers and thunderstorms. Lows in the upper 50s. Southwest winds 30 to 45 mph with gusts up to 65 mph, becoming west and increasing to 40 to 55 mph with gusts up to 75 mph after midnight. .WEDNESDAY...Summits obscured in clouds in the morning, then becoming mostly cloudy. A chance of showers. Highs in the lower 60s. West winds 35 to 50 mph with gusts up to 70 mph. .The Higher Summits Forecast for the Green Mountains of Vermont... .TONIGHT...Mostly clear until midnight, then becoming partly cloudy. Lows in the lower 60s. Southwest winds 20 to 35 mph with gusts up to 45 mph, increasing to 30 to 45 mph with gusts up to 60 mph after midnight. .TUESDAY...Mostly cloudy. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. West winds 30 to 45 mph with gusts up to 65 mph, diminishing to 20 to 30 mph with gusts up to 45 mph in the afternoon. .TUESDAY NIGHT...Partly cloudy until midnight, then becoming obscured in clouds. A chance of showers until midnight. A slight chance of thunderstorms. A slight chance of showers after midnight. Lows in the lower 60s. West winds 30 to 45 mph with gusts up to 60 mph. .WEDNESDAY...Summits obscured in clouds in the morning, then becoming mostly cloudy. Showers likely. Highs in the upper 60s. West winds 25 to 40 mph. Gusts up to 60 mph, decreasing to 50 mph in the afternoon. $$