Scattered thunderstorms are expected across St. Lawrence County today with a high near 69, according to the national weather service.

Although there is a 40 percent chance of rain, less than a tenth of an inch is expected. On Sunday the weather service is calling for a 30 percent chance of showers after 10 a.m. with a high near 76. On Memorial Day the weather service is calling for a 40 percent chance of rain with a high near 79.

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A five-day forecast follows:

Scattered showers and thunderstorms. Partly sunny, with a high near 69. Calm wind becoming northwest around 5 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight A slight chance of showers and thunderstorms before 9pm, then isolated showers between 9pm and 10pm. Mostly cloudy, with a low around 49. Southwest wind 3 to 7 mph. Chance of precipitation is 20%.

Sunday A 30 percent chance of showers, mainly after 10am. Mostly sunny, with a high near 76. Southwest wind 7 to 14 mph. New precipitation amounts of less than a tenth of an inch possible.

Sunday Night A 30 percent chance of showers after 3am. Mostly cloudy, with a low around 53. Southwest wind 9 to 11 mph. New precipitation amounts of less than a tenth of an inch possible.

Memorial Day A 40 percent chance of showers. Partly sunny, with a high near 76. Southwest wind 13 to 16 mph, with gusts as high as 26 mph. New precipitation amounts of less than a tenth of an inch possible.

Monday Night A 50 percent chance of showers. Mostly cloudy, with a low around 57. West wind 7 to 11 mph. New precipitation amounts between a tenth and quarter of an inch possible.

Tuesday A 40 percent chance of showers. Mostly cloudy, with a high near 72. West wind around 7 mph becoming north in the afternoon.

Tuesday Night Partly cloudy, with a low around 52. Northeast wind 5 to 7 mph.

Wednesday Mostly sunny, with a high near 70. Northeast wind around 7 mph.

Wednesday Night Partly cloudy, with a low around 52. Light and variable wind.

Thursday Mostly sunny, with a high near 72. Calm wind becoming northwest around 6 mph in the afternoon.

Thursday Night Partly cloudy, with a low around 54. West wind 3 to 5 mph.

Friday Mostly sunny, with a high near 73. Northwest wind 5 to 8 mph.