Tuesday, October 20, 2026 | St. Lawrence County, NY
Remnants of Tropical Storm Fred will produce widespread rainfall today in St. Lawrence County, according to the National Weather Service (NWS). A flash flood watch is in effect for portions of the …
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Remnants of Tropical Storm Fred will produce widespread rainfall today in St. Lawrence County, according to the National Weather Service (NWS).
A flash flood watch is in effect for portions of the southern Adirondacks where 1 to 3 inches of rain with locally higher amounts is expected.
Expect a high today around 76, NWS says. The overnight low will be around 66.
Warm and humid conditions with chances of showers will continue into the weekend, the service says.
The forecast through next Wednesday is as follows:
Tonight
A slight chance of rain and thunderstorms before midnight, then a slight chance of showers between midnight and 2am. Mostly cloudy, with a low around 66. North wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 86. Heat index values as high as 91. Southwest wind around 5 mph becoming northwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 67. Calm wind.
Saturday
A 40 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 86. Calm wind becoming east around 6 mph in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 40 percent chance of showers and thunderstorms before 9pm. Mostly cloudy, with a low around 69. Light southeast wind. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A 40 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 84. South wind around 5 mph becoming calm in the morning.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Light southeast wind. Chance of precipitation is 40%.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 83. Light south wind.
Monday Night
A 50 percent chance of showers before 3am. Partly cloudy, with a low around 65. South wind around 5 mph.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 81. South wind 3 to 6 mph.
Tuesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 63. South wind around 5 mph.
Wednesday
Mostly sunny, with a high near 81. Light southwest wind.
