National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Hazardous Weather Conditions

Current conditions at

Syracuse, Syracuse Hancock International Airport (KSYR)

Lat: 43.11°NLon: 76.1°WElev: 420ft.

Light Rain

68°F

20°C

Humidity 59%
Wind Speed S 12 mph
Barometer 29.58 in (1001.1 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 18 Jun 2:54 am EDT
Extended Forecast for

Williamstown NY

Wind Advisory June 18, 04:00am until June 18, 08:00pm
Lakeshore Flood Warning June 18, 02:00pm until June 19, 08:00pm
Click here for hazard details and duration
Wind Advisory
Lakeshore Flood Warning

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 62. Southeast wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. High near 76. South wind 15 to 18 mph becoming west in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers between 9pm and 1am. Mostly cloudy, with a low around 54. West wind 9 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Chance
    Showers

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 71. West wind 11 to 17 mph, with gusts as high as 29 mph.

    High: 71 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers after 2am. Partly cloudy, with a low around 52. West wind 9 to 14 mph. Chance of precipitation is 20%.

    Low: 52 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 70. West wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 70 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51. West wind around 6 mph becoming calm in the evening.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 72. West wind 3 to 8 mph.

    High: 72 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.

    Low: 53 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 62. Southeast wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. High near 76. South wind 15 to 18 mph becoming west in the afternoon. Winds could gust as high as 39 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A chance of showers between 9pm and 1am. Mostly cloudy, with a low around 54. West wind 9 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Juneteenth
Mostly sunny, with a high near 71. West wind 11 to 17 mph, with gusts as high as 29 mph.
Friday Night
A slight chance of showers after 2am. Partly cloudy, with a low around 52. West wind 9 to 14 mph. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 70. West wind 9 to 11 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 51. West wind around 6 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 72. West wind 3 to 8 mph.
Sunday Night
A chance of showers after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 71. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Williamstown NY
 43.43°N 75.9°W (Elev. 600 ft)
Last Update:
2:22 am EDT Jun 18, 2026
Forecast Valid:
3am EDT Jun 18, 2026-6pm EDT Jun 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation