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

44°F

7°C

Humidity 89%
Wind Speed Calm
Barometer 30.20 in (1022.7 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 19 Sep 5:56 am EDT
Extended Forecast for

Alton Bay NH

  • Today

    Today: Sunny, with a high near 64. Calm wind becoming southeast around 5 mph.

    High: 64 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 45. Calm wind.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers between 1pm and 2pm, then rain after 2pm. High near 57. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F

    Mostly Cloudy
    then Rain

  • Sunday Night

    Sunday Night: Rain before 10pm, then showers likely between 10pm and 3am. Low around 46. Calm wind becoming north around 5 mph. Chance of precipitation is 80%.

    Low: 46 °F

    Rain then
    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 65. North wind around 5 mph.

    High: 65 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 64. Calm wind becoming southeast around 5 mph.
Tonight
Partly cloudy, with a low around 45. Calm wind.
Sunday
A slight chance of showers between 1pm and 2pm, then rain after 2pm. High near 57. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain before 10pm, then showers likely between 10pm and 3am. Low around 46. Calm wind becoming north around 5 mph. Chance of precipitation is 80%.
Monday
Mostly sunny, with a high near 65. North wind around 5 mph.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
Partly sunny, with a high near 61.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Mostly sunny, with a high near 61.
Wednesday Night
Mostly cloudy, with a low around 42.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 59.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 44.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alton Bay NH
 43.46°N 71.22°W (Elev. 732 ft)
Last Update:
5:35 am EDT Sep 19, 2026
Forecast Valid:
6am EDT Sep 19, 2026-6pm EDT Sep 25, 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