This weekend in St. Lawrence County is forecast to bring temperatures in the 80s with chances of rain Saturday night and Sunday.

Friday night is forecast to be in the high 50s with clouds.

Saturday, according to the National Weather Service, will be mostly sunny with highs in the low 80s. Saturday night brings up to 40 percent chances of showers with temperatures dropping to the mod 60s.

Sunday brings up to 40 percent chances of showers with 30 to 40 percent chances of thunderstorms in Massena, Potsdam and Star Lake. Temperatures are predicted in the low 80s. Sunday night is forecast to be partly cloudy with temperatures in the high 60s.

Monday is predicted to have temperatures in the mid 80s and up to 50 percent chances of thunderstorms.

The detailed forecast for St. Lawrence County:

Friday night: Increasing clouds, with a low around 59. Southwest wind 5 to 9 mph becoming light and variable in the evening.

Saturday: Mostly sunny, with a high near 82. Southwest wind 5 to 11 mph.

Saturday night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 65. South wind 8 to 11 mph. New precipitation amounts of less than a tenth of an inch possible.

Sunday: A chance of showers before 2pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 80. Southwest wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday night: Mostly cloudy, with a low around 67. Southwest wind 6 to 8 mph.

Monday: A 40 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Southwest wind 6 to 8 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Southwest wind around 8 mph. Chance of precipitation is 50%.

Tuesday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 86. Southwest wind 10 to 15 mph. Chance of precipitation is 30%.

Tuesday night: A chance of showers before 2am, then a chance of showers and thunderstorms between 2am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 71. Southwest wind around 10 mph. Chance of precipitation is 30%.

Wednesday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 82. Southwest wind 11 to 14 mph. Chance of precipitation is 50%.

Wednesday night: A 40 percent chance of showers. Mostly cloudy, with a low around 58. West wind 6 to 9 mph.

Thursday: Partly sunny, with a high near 73. Northwest wind around 7 mph.

Thursday night: Partly cloudy, with a low around 55. Light and variable wind.

Friday: Mostly sunny, with a high near 75. East wind around 5 mph becoming light and variable in the afternoon.