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

Laconia, Laconia Municipal Airport (KLCI)

Lat: 43.57°NLon: 71.42°WElev: 545ft.

26°F

-3°C

Humidity 60%
Wind Speed SW 8 mph
Barometer 30.49 in (1033.3 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 29 Mar 7:56 am EDT
Extended Forecast for

Alton Bay NH

  • Today

    Today: Mostly sunny, with a high near 45. Northwest wind 5 to 10 mph becoming southwest in the morning. Winds could gust as high as 20 mph.

    High: 45 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 31. Southwest wind around 5 mph.

    Low: 31 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, with a high near 58. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 58 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42. West wind 5 to 10 mph.

    Low: 42 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Rain likely, mainly after noon. Mostly cloudy, with a high near 55. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.

    High: 55 °F

    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain likely. Mostly cloudy, with a low around 41. Chance of precipitation is 70%.

    Low: 41 °F

    Rain Likely

  • Wednesday

    Wednesday: A 50 percent chance of rain. Mostly cloudy, with a high near 65.

    High: 65 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 11pm, then a chance of rain and snow between 11pm and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.

    Low: 30 °F

    Chance
    Rain/Snow

  • Thursday

    Thursday: A 30 percent chance of snow before 9am. Mostly cloudy, with a high near 43.

    High: 43 °F

    Chance Snow
    then Mostly
    Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 45. Northwest wind 5 to 10 mph becoming southwest in the morning. Winds could gust as high as 20 mph.
Tonight
Increasing clouds, with a low around 31. Southwest wind around 5 mph.
Monday
Partly sunny, with a high near 58. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly cloudy, with a low around 42. West wind 5 to 10 mph.
Tuesday
Rain likely, mainly after noon. Mostly cloudy, with a high near 55. Southeast wind 5 to 10 mph. Chance of precipitation is 60%.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 41. Chance of precipitation is 70%.
Wednesday
A 50 percent chance of rain. Mostly cloudy, with a high near 65.
Wednesday Night
A chance of rain before 11pm, then a chance of rain and snow between 11pm and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Thursday
A 30 percent chance of snow before 9am. Mostly cloudy, with a high near 43.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 28.
Friday
A chance of rain and snow. Cloudy, with a high near 36. Chance of precipitation is 50%.
Friday Night
Snow and freezing rain likely. Cloudy, with a low around 28. Chance of precipitation is 60%.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Alton Bay NH
 43.48°N 71.22°W (Elev. 889 ft)
Last Update:
6:22 am EDT Mar 29, 2026
Forecast Valid:
8am EDT Mar 29, 2026-6pm EDT Apr 4, 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