NWS Forecast for Londonderry NH

National Weather Service Forecast for: Londonderry NH
Issued by: National Weather Service Gray/Portland, ME

Updated: 2:45 pm EDT Jul 16, 2026

This Afternoon Chance Showers	Tonight Areas Smoke then Clear	Friday Sunny	Friday Night Partly Cloudy	Saturday Mostly Sunny then Chance Showers	Saturday Night Showers	Sunday Chance Showers then Sunny	Sunday Night Clear	Monday Sunny
Hi 87 °F	Lo 58 °F	Hi 82 °F	Lo 58 °F	Hi 86 °F	Lo 64 °F	Hi 84 °F	Lo 58 °F	Hi 83 °F

Severe Thunderstorm Warning
Air Quality Alert

This Afternoon	A 30 percent chance of showers and thunderstorms. Areas of smoke. Partly sunny, with a high near 87. West wind around 15 mph, with gusts as high as 25 mph.
Tonight	Areas of smoke before 8pm. Mostly clear, with a low around 58. Northwest wind around 5 mph.
Friday	Sunny, with a high near 82. Northwest wind 5 to 10 mph.
Friday Night	Partly cloudy, with a low around 58. Calm wind.
Saturday	A 40 percent chance of showers after 2pm. Mostly sunny, with a high near 86. Light south wind becoming southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Saturday Night	Showers, mainly before 2am. Low around 64. Chance of precipitation is 90%.
Sunday	A 30 percent chance of showers before 7am. Sunny, with a high near 84.
Sunday Night	Clear, with a low around 58.
Monday	Sunny, with a high near 83.
Monday Night	Partly cloudy, with a low around 61.
Tuesday	A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.
Tuesday Night	Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Wednesday	Showers likely. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Wednesday Night	Showers likely. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Thursday	Mostly sunny, with a high near 80.

Forecast from NOAA-NWS for Londonderry NH.