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

Snow Squalls May Impact the Northeast on Thursday; Dangerously Cold Arctic Air Impact the North-Central US

Snow showers and snow squalls are likely to develop across the Northeast on Thursday. Lake effect snow will persist downwind of the Great Lakes. An arctic blast will bring frigid temperatures, gusty winds and dangerous wind chills to the Northern Plains before expanding to the South and East. A major winter storm will begin impacting the Southern Plains and Lower Mississippi Valley Friday. Read More >

Hazardous Weather Conditions

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Partly Cloudy

42°F

6°C

Humidity 43%
Wind Speed SW 8 mph
Barometer 30.11 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 22 Jan 2:15 am EST
Extended Forecast for

Port Republic MD

Winter Storm Watch January 24, 07:00pm until January 26, 07:00am
Click here for hazard details and duration
Winter Storm Watch

  • Overnight

    Overnight: Partly cloudy, with a low around 35. Southwest wind 11 to 13 mph, with gusts as high as 23 mph.

    Low: 35 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 51. Southwest wind 8 to 10 mph, with gusts as high as 21 mph.

    High: 51 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30. Light north wind.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 44. Calm wind becoming west 5 to 8 mph in the morning.

    High: 44 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 12. North wind around 13 mph, with gusts as high as 24 mph.

    Low: 12 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of snow after 1pm. Partly sunny, with a high near 22. Chance of precipitation is 20%.

    High: 22 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Saturday Night

    Saturday Night: Snow. The snow could be heavy at times. Low around 16. Chance of precipitation is 100%.

    Low: 16 °F

    Heavy Snow

  • Sunday

    Sunday: Snow, freezing rain, and sleet. High near 30. Chance of precipitation is 100%.

    High: 30 °F

    Wintry Mix

  • Sunday Night

    Sunday Night: Snow, freezing rain, and sleet likely before 1am, then a chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 70%.

    Low: 19 °F

    Wintry Mix
    Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 35. Southwest wind 11 to 13 mph, with gusts as high as 23 mph.
Thursday
Sunny, with a high near 51. Southwest wind 8 to 10 mph, with gusts as high as 21 mph.
Thursday Night
Mostly clear, with a low around 30. Light north wind.
Friday
Partly sunny, with a high near 44. Calm wind becoming west 5 to 8 mph in the morning.
Friday Night
Mostly cloudy, with a low around 12. North wind around 13 mph, with gusts as high as 24 mph.
Saturday
A slight chance of snow after 1pm. Partly sunny, with a high near 22. Chance of precipitation is 20%.
Saturday Night
Snow. The snow could be heavy at times. Low around 16. Chance of precipitation is 100%.
Sunday
Snow, freezing rain, and sleet. High near 30. Chance of precipitation is 100%.
Sunday Night
Snow, freezing rain, and sleet likely before 1am, then a chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 70%.
Monday
Mostly sunny, with a high near 28.
Monday Night
Mostly clear, with a low around 8.
Tuesday
Sunny, with a high near 29.
Tuesday Night
Partly cloudy, with a low around 14.
Wednesday
Partly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Port Republic MD
 38.48°N 76.55°W (Elev. 98 ft)
Last Update:
12:53 am EST Jan 22, 2026
Forecast Valid:
2am EST Jan 22, 2026-6pm EST Jan 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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