Geography of Londonderry, New Hampshire

By | March 13, 2024

According to citiesplustowns, Londonderry, New Hampshire, is a town located in the southern part of the state, near the border with Massachusetts. With its rolling hills, scenic landscapes, and rich history, Londonderry offers a unique blend of rural charm and suburban convenience. In this comprehensive description, we will explore the physical features, climate, and environmental characteristics of Londonderry, providing insight into the factors that define the region’s geography.

Physical Features:

Londonderry is situated in Rockingham County, New Hampshire, and covers an area of approximately 42.1 square miles (109 square kilometers). The town is located in the Merrimack Valley region, nestled between the Merrimack River to the west and the Beaver Brook watershed to the east.

The terrain around Londonderry is characterized by rolling hills, wooded areas, and open fields. The town is part of the larger Southern New Hampshire Uplands, a region known for its scenic beauty and outdoor recreational opportunities.

To the west of Londonderry lies the Merrimack River, one of the longest rivers in New England. The river serves as a vital waterway for transportation, recreation, and wildlife habitat, supporting a diverse array of plant and animal species.

To the east of Londonderry is the Beaver Brook watershed, a network of streams, wetlands, and forests that provide habitat for various wildlife species. Beaver Brook Conservation Area, located within the watershed, offers opportunities for hiking, birdwatching, and nature exploration.

The town of Londonderry is primarily residential, with suburban neighborhoods and rural areas interspersed throughout the landscape. The town center features buildings, parks, and community amenities, while the outskirts of town are dotted with farms, orchards, and conservation areas.


Londonderry experiences a humid continental climate, characterized by four distinct seasons with varying temperatures and precipitation patterns.

Spring: Springtime in Londonderry brings gradually warming temperatures and increasing rainfall. Average highs range from the upper 40s to the mid-60s Fahrenheit (9-18°C), while lows generally range from the upper 20s to the mid-40s Fahrenheit (-2 to 7°C). This season is marked by blooming flowers, budding trees, and the return of migratory birds, making it a pleasant time to explore the town’s outdoor attractions.

Summer: Summers in Londonderry are warm and humid, with average highs in the upper 70s to low 80s Fahrenheit (25-28°C) and lows in the upper 50s to low 60s Fahrenheit (14-17°C). Heatwaves are common during this time, with temperatures occasionally reaching into the 90s Fahrenheit (above 32°C). Thunderstorms are frequent, providing relief from the heat but also bringing the risk of heavy rain and lightning.

Fall: Autumn in Londonderry brings cooler temperatures and fall foliage as the leaves change color. Average highs range from the upper 50s to the low 70s Fahrenheit (15-22°C), while lows range from the upper 30s to the mid-50s Fahrenheit (3-13°C). This season is popular for outdoor activities such as apple picking, pumpkin carving, and leaf-peeping, as the landscape transforms into a tapestry of reds, oranges, and yellows.

Winter: Winters in Londonderry are cold and snowy, with average highs in the upper 20s to low 30s Fahrenheit (-2 to 0°C) and lows in the teens to low 20s Fahrenheit (-7 to -4°C). Snowfall is common throughout the winter months, with the region receiving several feet of snow accumulation annually. Cold snaps are common, and temperatures can drop below freezing for extended periods, requiring residents to bundle up against the chill.

Environmental Characteristics:

Londonderry is home to a diverse array of plant and animal species, thanks to its varied geography and climate. The region’s wooded areas, wetlands, and open fields provide habitat for a wide range of wildlife, including deer, foxes, birds of prey, and various species of songbirds.

The Beaver Brook watershed and other natural areas in Londonderry offer opportunities for outdoor recreation and environmental education. These areas provide hiking trails, fishing spots, and nature observation sites, allowing residents and visitors to connect with nature and explore the town’s natural beauty.

Londonderry is committed to environmental conservation and sustainability. The town has implemented initiatives to protect natural resources, reduce energy consumption, and promote recycling and waste reduction. These efforts include green building practices, land conservation programs, and community-wide environmental education initiatives.

In recent years, Londonderry has faced environmental challenges related to urban development and population growth. Efforts to balance economic growth with environmental conservation are ongoing, with initiatives focused on smart growth, habitat restoration, and environmental monitoring.