The potential for flooding is a danger people should be watching for tonight as heavy rain makes its way into St. Lawrence County this afternoon and tonight and continues Sunday.

A flood watch has been posted for the North Country by the National Weather Service for tonight through Monday morning.

The NWS is predicting heavy rain tonight and tomorrow. Total rainfall amounts by Monday morning will range from 1 to 2 inches with localized higher amounts.

Current river flows across the North Country are running very high and well above normal due to near record rainfall received this month, the NWS says. Additional rain falling on already saturated ground will cause some rivers and streams to rise above their banks, along with minor flooding of low lying and poor drainage areas. High flows on rivers and streams will also pose hazards to recreational water activities.

This afternoon, clouds will gather and there is a 30 percent chance of rain later in the day. Highs will be about 75 degrees.

Heavy rain is expected to arrive in the evening. Lows will be in the mid-50s with southeast winds turning to the northwest.

The chance of rain is 100 percent tonight and tomorrow.

Heavy rain continues Sunday with a chance of thunderstorms and highs near 60. Northeast winds will blow at about 10 mph and higher around thunderstorms.

Showers will persist tomorrow night, with new rainfall amounts up to half an inch.

The NWS forecast for the St. Lawrence Valley and the northwestern Adirondacks:

• Today: A 30 percent chance of rain, mainly after 5pm. Mostly cloudy, with a high near 75. East wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.

• Tonight: Rain, mainly after 9pm. The rain could be heavy at times. Low around 57. Southeast wind 6 to 8 mph becoming northeast after midnight. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

• Sunday: Rain, with thunderstorms also possible after 11am. Some of the storms could produce heavy rainfall. High near 60. Northeast wind 9 to 13 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

• Sunday Night: Showers likely. Cloudy, with a low around 55. North wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

• Monday: A 30 percent chance of showers before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 69. West wind 6 to 8 mph. New precipitation amounts of less than a tenth of an inch possible.

• Monday Night: Partly cloudy, with a low around 60. South wind around 7 mph.

• Tuesday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 74. South wind 7 to 9 mph. Chance of precipitation is 70%.

• Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. South wind 6 to 9 mph. Chance of precipitation is 60%.

• Wednesday: A 50 percent chance of showers. Mostly cloudy, with a high near 70. West wind around 8 mph.

• Wednesday Night: Mostly cloudy, with a low around 54. West wind 3 to 7 mph.

• Thursday: Mostly sunny, with a high near 72. West wind 5 to 8 mph.

• Thursday Night: Mostly clear, with a low around 55. South wind 3 to 5 mph.

• Friday: A 30 percent chance of showers. Mostly sunny, with a high near 76. South wind around 5 mph.