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

57°F

14°C

Humidity 83%
Wind Speed Vrbl 3 mph
Barometer 29.92 in (1013.0 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 15 Apr 7:56 pm EDT
Extended Forecast for

Alton Bay NH

  • Tonight

    Tonight: A slight chance of showers before 10pm, then a chance of showers after midnight. Patchy fog between 10pm and 5am. Otherwise, cloudy, with a low around 49. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 70. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Chance
    Showers and
    Patchy Fog
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 52. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers. Mostly cloudy, with a high near 67. Calm wind becoming north around 5 mph in the afternoon.

    High: 67 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 9pm. Mostly cloudy, with a low around 46. Northeast wind around 5 mph becoming calm.

    Low: 46 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 1am. Cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 10am. Cloudy, with a high near 55. Chance of precipitation is 60%.

    High: 55 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of rain and snow showers before 2am, then a chance of snow showers between 2am and 3am. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.

    Low: 31 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
A slight chance of showers before 10pm, then a chance of showers after midnight. Patchy fog between 10pm and 5am. Otherwise, cloudy, with a low around 49. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 70. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 52. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 50 percent chance of showers. Mostly cloudy, with a high near 67. Calm wind becoming north around 5 mph in the afternoon.
Friday Night
A 30 percent chance of showers before 9pm. Mostly cloudy, with a low around 46. Northeast wind around 5 mph becoming calm.
Saturday
Mostly cloudy, with a high near 58.
Saturday Night
A 30 percent chance of showers after 1am. Cloudy, with a low around 44.
Sunday
Showers likely, mainly after 10am. Cloudy, with a high near 55. Chance of precipitation is 60%.
Sunday Night
A chance of rain and snow showers before 2am, then a chance of snow showers between 2am and 3am. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.
Monday
Mostly sunny, with a high near 43.
Monday Night
Mostly clear, with a low around 26.
Tuesday
Sunny, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Alton Bay NH
 43.46°N 71.22°W (Elev. 732 ft)
Last Update:
6:34 pm EDT Apr 15, 2026
Forecast Valid:
8pm EDT Apr 15, 2026-6pm EDT Apr 22, 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