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.

Fair

64°F

18°C

Humidity 68%
Wind Speed S 8 mph
Barometer 29.97 in (1015.0 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 17 Apr 7:56 pm EDT
Extended Forecast for

Alton Bay NH

  • Tonight

    Tonight: Partly cloudy, with a low around 44. Southeast wind around 5 mph becoming calm.

    Low: 44 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 54. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 54 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly after 3am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 39. Southeast wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Patchy Fog
    then Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Showers likely, mainly between 7am and 9am, then rain after 9am. Areas of fog before 9am. High near 45. South wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%.

    High: 45 °F

    Rain and
    Areas Fog

  • Sunday Night

    Sunday Night: Snow likely between 7pm and 8pm. Partly cloudy, with a low around 29. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Snow Likely
    then Mostly
    Clear

  • Monday

    Monday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 44. Southeast wind around 5 mph becoming calm.
Saturday
Partly sunny, with a high near 54. Southeast wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A 30 percent chance of showers, mainly after 3am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 39. Southeast wind around 5 mph becoming calm in the evening. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers likely, mainly between 7am and 9am, then rain after 9am. Areas of fog before 9am. High near 45. South wind 5 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%.
Sunday Night
Snow likely between 7pm and 8pm. Partly cloudy, with a low around 29. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Mostly sunny, with a high near 45.
Monday Night
Partly cloudy, with a low around 25.
Tuesday
Sunny, with a high near 47.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Partly sunny, with a high near 53.
Wednesday Night
Partly cloudy, with a low around 33.
Thursday
Mostly sunny, with a high near 56.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Mostly sunny, with a high near 58.
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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:
6:30 pm EDT Apr 17, 2026
Forecast Valid:
8pm EDT Apr 17, 2026-6pm EDT Apr 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