Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Massena, Massena International-Richards Field (KMSS)

Lat: 44.94° N Lon: 74.85° W Elev: 217 ft.

Fair

67°F

19°C

Humidity 66%
Wind Speed Calm
Barometer 29.74 in (1007.0 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 17 Jun 9:53 am EDT
Detailed forecast for

Northern St. Lawrence

Today
Partly sunny. A slight chance of showers this morning, then showers likely with a slight chance of thunderstorms this afternoon. Highs in the mid 70s. South winds around 10 mph. Chance of rain 70 percent.
Tonight
Partly cloudy with a chance of showers with a slight chance of thunderstorms until midnight, then mostly cloudy with showers after midnight. Lows in the upper 50s. Light and variable winds, becoming southeast 10 to 15 mph with gusts up to 25 mph after midnight. Chance of rain 90 percent.
Thursday
Showers with a chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Some thunderstorms may produce gusty winds and heavy rainfall in the afternoon. Breezy with highs in the mid 70s. Southeast winds 15 to 20 mph, becoming southwest 20 to 25 mph in the afternoon. Gusts up to 40 mph. Chance of rain near 100 percent.
Thursday Night
Partly cloudy with a 50 percent chance of showers. Lows in the mid 50s. Southwest winds 15 to 20 mph with gusts up to 40 mph.
Juneteenth
Showers with a chance of thunderstorms. Highs in the lower 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 90 percent.
Friday Night
Mostly cloudy with a chance of showers. Lows in the lower 50s. Chance of rain 50 percent.
Saturday
Showers. Highs in the upper 60s. Chance of rain 90 percent.
Saturday Night
Mostly cloudy with a 50 percent chance of showers. Lows in the lower 50s.
Sunday
Partly sunny with a chance of showers. Highs in the lower 70s. Chance of rain 50 percent.
Sunday Night
Partly cloudy. Lows in the mid 50s.
Monday
Partly sunny with a chance of showers. Highs in the lower 70s. Chance of rain 50 percent.
Monday Night
Partly cloudy with a 50 percent chance of showers. Lows in the mid 50s.
Tuesday
Partly sunny. Highs in the mid 70s.



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625 AM EDT Wed Jun 17 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database