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

Hazardous Weather Conditions

Current conditions at

Lebanon Municipal Airport (KLEB)

Lat: 43.63°NLon: 72.31°WElev: 558ft.

Fair

85°F

29°C

Humidity 72%
Wind Speed S 5 mph
Barometer 29.89 in (1011.0 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 1 Jul 6:53 pm EDT
Extended Forecast for

Grantham NH

Extreme Heat Warning July 1, 07:34pm until July 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 1, 07:34pm until July 3, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • Tonight

    Low: 73 °F

    Chance
    T-storms

  • Thursday

    Thursday: Sunny and hot, with a high near 96. Heat index values as high as 104. West wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 96 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 73. West wind around 5 mph.

    Low: 73 °F

    Partly Cloudy

  • Friday

    Friday: Sunny and hot, with a high near 93. Heat index values as high as 97. West wind 5 to 10 mph.

    High: 93 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 68. Northwest wind around 5 mph becoming calm.

    Low: 68 °F

    Mostly Clear

  • Independence Day

    Independence Day: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 73. Southwest wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Sunny and hot, with a high near 96. Heat index values as high as 104. West wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 73. West wind around 5 mph.
Friday
Sunny and hot, with a high near 93. Heat index values as high as 97. West wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 68. Northwest wind around 5 mph becoming calm.
Independence Day
Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 62.
Monday
A 50 percent chance of showers. Partly sunny, with a high near 81.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 61.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 84.
Tuesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 61.
Wednesday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grantham NH
 43.49°N 72.12°W (Elev. 1070 ft)
Last Update:
6:56 pm EDT Jul 1, 2026
Forecast Valid:
7pm EDT Jul 1, 2026-6pm EDT Jul 8, 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