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

Lebanon Municipal Airport (KLEB)

Lat: 43.63°NLon: 72.31°WElev: 558ft.

Overcast

62°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 30.15 in (1020.3 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 2 Sep 2:53 am EDT
Extended Forecast for

Grantham NH

  • Overnight

    Overnight: A 20 percent chance of showers. Patchy fog. Otherwise, cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 70. Southeast wind around 5 mph.

    High: 70 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: Showers likely, then showers and possibly a thunderstorm after 2am. Patchy fog after 1am. Low around 55. Southeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Chance
    Showers then
    Showers and
    Patchy Fog

  • Thursday

    Thursday: Showers before 3pm, then showers likely after 4pm. Areas of fog before 10am. High near 73. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 80%.

    High: 73 °F

    Showers and
    Areas Fog

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers after 2pm. Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before 9pm. Partly cloudy, with a low around 49.

    Low: 49 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Patchy fog. Otherwise, cloudy, with a low around 58. Calm wind.
Wednesday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 70. Southeast wind around 5 mph.
Wednesday Night
Showers likely, then showers and possibly a thunderstorm after 2am. Patchy fog after 1am. Low around 55. Southeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers before 3pm, then showers likely after 4pm. Areas of fog before 10am. High near 73. South wind around 5 mph becoming west in the afternoon. Chance of precipitation is 80%.
Thursday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 58. Calm wind.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 54.
Saturday
A 40 percent chance of showers after 2pm. Partly sunny, with a high near 71.
Saturday Night
A 30 percent chance of showers before 9pm. Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 70.
Sunday Night
Mostly clear, with a low around 49.
Labor Day
Sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grantham NH
 43.49°N 72.12°W (Elev. 1070 ft)
Last Update:
2:20 am EDT Sep 2, 2026
Forecast Valid:
3am EDT Sep 2, 2026-6pm EDT Sep 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