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

Hazardous Weather Conditions

Current conditions at

Laconia, Laconia Municipal Airport (KLCI)

Lat: 43.57°NLon: 71.42°WElev: 545ft.

Mostly Cloudy

76°F

24°C

Humidity 77%
Wind Speed SW 7 mph
Barometer 29.98 in (1014.9 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 30 Jun 7:56 pm EDT
Extended Forecast for

Alton Bay NH

Extreme Heat Warning July 1, 11:00am until July 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Calm wind becoming southwest around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny and hot, with a high near 95. Heat index values as high as 109. West wind 5 to 10 mph.

    High: 95 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. West wind around 5 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99. Heat index values as high as 109. West wind 5 to 10 mph.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 76. West wind around 5 mph.

    Low: 76 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Independence Day

    Independence Day: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Calm wind becoming southwest around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Mostly sunny and hot, with a high near 95. Heat index values as high as 109. West wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 75. West wind around 5 mph.
Thursday
Sunny and hot, with a high near 99. Heat index values as high as 109. West wind 5 to 10 mph.
Thursday Night
Mostly clear, with a low around 76. West wind around 5 mph.
Friday
Sunny and hot, with a high near 96.
Friday Night
Mostly clear, with a low around 72.
Independence Day
Sunny, with a high near 88.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
A 30 percent chance of showers after 5pm. Mostly sunny, with a high near 84.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 65.
Monday
A 30 percent chance of showers. Partly sunny, with a high near 80.
Monday Night
A 30 percent chance of showers. Partly cloudy, with a low around 63.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 80.
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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:
3:27 pm EDT Jun 30, 2026
Forecast Valid:
8pm EDT Jun 30, 2026-6pm EDT Jul 7, 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