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.

Overcast

36°F

2°C

Humidity 70%
Wind Speed NW 10 mph
Barometer 29.89 in (1012.7 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 21 Mar 11:56 am EDT
Extended Forecast for

Alton Bay NH

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 44. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 44 °F

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of snow, mainly after 4am. Increasing clouds, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow before noon, then snow, possibly mixed with rain between noon and 2pm, then rain after 2pm. High near 40. Southeast wind around 5 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 40 °F

    Snow then
    Rain/Snow

  • Sunday Night

    Sunday Night: Rain likely before 10pm, then rain and snow likely between 10pm and 11pm, then a chance of snow after 11pm. Cloudy, with a low around 26. North wind around 5 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 26 °F

    Rain/Snow
    Likely then
    Chance Snow

  • Monday

    Monday: A 40 percent chance of snow. Mostly cloudy, with a high near 35. North wind around 10 mph, with gusts as high as 20 mph.

    High: 35 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 40.

    High: 40 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 44. Northwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
A 30 percent chance of snow, mainly after 4am. Increasing clouds, with a low around 29. Calm wind.
Sunday
Snow before noon, then snow, possibly mixed with rain between noon and 2pm, then rain after 2pm. High near 40. Southeast wind around 5 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Sunday Night
Rain likely before 10pm, then rain and snow likely between 10pm and 11pm, then a chance of snow after 11pm. Cloudy, with a low around 26. North wind around 5 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Monday
A 40 percent chance of snow. Mostly cloudy, with a high near 35. North wind around 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 20.
Tuesday
Sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 24.
Wednesday
Partly sunny, with a high near 43.
Wednesday Night
Partly cloudy, with a low around 21.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
Thursday Night
Rain and snow likely. Mostly cloudy, with a low around 26. Chance of precipitation is 60%.
Friday
A chance of rain and snow. Partly sunny, with a high near 39. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alton Bay NH
 43.48°N 71.22°W (Elev. 889 ft)
Last Update:
6:50 am EDT Mar 21, 2026
Forecast Valid:
12pm EDT Mar 21, 2026-6pm EDT Mar 27, 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