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

70°F

21°C

Humidity 71%
Wind Speed Vrbl 3 mph
Barometer 30.18 in (1021.1 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 13 Jul 8:53 am EDT
Extended Forecast for

Grantham NH

Heat Advisory July 14, 11:00am until July 14, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Mostly sunny, with a high near 87. West wind around 5 mph.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 64. Southwest wind around 5 mph.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny and hot, with a high near 94. Heat index values as high as 99. West wind 5 to 10 mph.

    High: 94 °F

    Hot

  • Tuesday Night

    Tuesday Night: Scattered showers and thunderstorms between 11pm and 2am, then scattered showers after 2am. Increasing clouds, with a low around 71. West wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 71 °F

    Scattered
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 89. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 89 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 87. West wind around 5 mph.
Tonight
Partly cloudy, with a low around 64. Southwest wind around 5 mph.
Tuesday
Partly sunny and hot, with a high near 94. Heat index values as high as 99. West wind 5 to 10 mph.
Tuesday Night
Scattered showers and thunderstorms between 11pm and 2am, then scattered showers after 2am. Increasing clouds, with a low around 71. West wind 5 to 10 mph. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 89. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 56.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 80.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 59.
Sunday
A 50 percent chance of showers. Partly sunny, with a high near 81.
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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:
9:24 am EDT Jul 13, 2026
Forecast Valid:
9am EDT Jul 13, 2026-6pm EDT Jul 19, 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