Portsmouth Climate & Monthly Temperature Overview – United States

Summer Months (June – September)

Portsmouth’s summers are characterized by warm, humid, and often sunny weather. The average high temperatures range from the mid-80s to low 90s Fahrenheit (29-34 Celsius), while the average low temperatures range from the mid-60s to mid-70s Fahrenheit (18-24 Celsius). The humidity levels are typically high, making the air feel sticky and uncomfortable at times. Portsmouth receives an average of 2.5-3.5 inches (6-9 cm) of rain per month during the summer season, with thunderstorms and showers being common occurrences.

Winter Months (December – March)

Winters in Portsmouth are cold and often snowy. The average high temperatures range from the mid-30s to mid-40s Fahrenheit (1-7 Celsius), while the average low temperatures range from the mid-20s to low 30s Fahrenheit (-3 to 0 Celsius). The humidity levels are typically low, resulting in relatively dry and crisp air. Portsmouth receives an average of 4-6 inches (10-15 cm) of snow per month during the winter season, with snowfall being heaviest in January and February.

Average Temperature in Portsmouth, United States

Portsmouth, located in the state of New Hampshire, experiences a humid continental climate. This climate is characterized by warm, humid summers and cold, snowy winters. The average annual temperature in Portsmouth is 49.6°F (9.8°C). The warmest month is July, with an average temperature of 70.8°F (21.6°C). The coldest month is January, with an average temperature of 27.7°F (-2.4°C).

The temperature in Portsmouth can vary significantly throughout the year. In the summer, temperatures can reach into the 90s°F (30s°C), while in the winter, temperatures can drop below 0°F (-18°C). The city also experiences a fair amount of precipitation, with an average of 44.4 inches (112.8 cm) of rain and snow per year.

Cloud Formations in Portsmouth, United States

Portsmouth, United States, experiences a variety of cloud formations due to its location near the Atlantic coast and its humid subtropical climate. The most common cloud type in Portsmouth is the cumulus cloud, which appears as puffy, white masses. Cumulus clouds often form during fair weather and can indicate the development of larger storm systems. Another common cloud type is the cirrus cloud, which appears as thin, wispy streaks in the sky. Cirrus clouds are composed of ice crystals and are often found at high altitudes.

Other cloud formations that may be observed in Portsmouth include stratus clouds, which appear as a flat, gray layer covering the sky, and nimbus clouds, which are associated with precipitation. Cumulonimbus clouds, which appear as towering, anvil-shaped clouds, can produce thunderstorms. The frequency and type of cloud formations in Portsmouth vary throughout the year, with more cloud cover during the winter and spring months than during the summer and fall months.

Average Precipitation

Portsmouth, located in southeastern New Hampshire, experiences an average annual precipitation of approximately 45 inches. Distribution throughout the year is relatively uniform, with no distinct wet or dry seasons. The city’s proximity to the Atlantic Ocean contributes to the year-round precipitation, as moisture from the ocean evaporates and forms clouds that release rain or snow.

Seasonal Variations

Precipitation patterns vary somewhat across seasons. Spring (March-May) tends to be the wettest period, with an average of 12-13 inches of precipitation. Summer (June-August) is slightly less rainy, with around 10-11 inches. Fall (September-November) and winter (December-February) experience similar precipitation levels, averaging around 10-11 inches each. Snowfall occurs primarily during the winter months and contributes significantly to the overall precipitation. Portsmouth typically receives an average of 50-60 inches of snow per year.

Annual Rainfall Patterns

Portsmouth, located in the United States, experiences a humid subtropical climate characterized by warm, rainy summers and mild, relatively dry winters. Annual rainfall averages approximately 44 inches (112 cm), distributed fairly evenly throughout the year. During the summer months (June to September), thunderstorms contribute to frequent rainfall events, often accompanied by high humidity and temperatures. In contrast, the winter months (November to March) typically bring less rain, with occasional showers or light snowfall.

Seasonal Variations and Impacts

The spring and fall seasons (April to May and October) serve as transitional periods in Portsmouth’s rainfall patterns. Springtime brings a gradual increase in precipitation, often associated with the remnants of coastal storms. Conversely, autumn rainfall tends to decrease, signaling the approach of drier winter conditions. These seasonal variations can influence various aspects of local life, including agricultural practices, outdoor activities, and urban planning. The availability of water resources during the wetter months supports agriculture and recreational activities, while the drier winter months present challenges for maintaining water levels and preventing drought conditions.

Climate and Snowfall Patterns

Portsmouth, located in the northeastern United States, experiences a humid continental climate characterized by warm summers and cold winters. The city is influenced by its proximity to the Atlantic Ocean, which moderates temperature extremes. Snowfall is a common occurrence during the winter months, but the amount and timing can vary significantly.

Seasonal Snowfall Variability

Average snowfall in Portsmouth is around 40 inches (102 centimeters) per year. Snowfall typically begins in late November or early December and continues through March. The heaviest snowfall usually occurs in January and February, with occasional snowstorms bringing significant accumulations. However, snowfall patterns can be highly variable, with some winters being much snowier than others. In recent years, Portsmouth has experienced several major snowstorms, including the historic “Blizzard of 2013” which dumped over 2 feet of snow on the city.

Historical Significance:

Portsmouth, New Hampshire, played a vital role during the American Revolutionary War. The city served as a major port and shipbuilding center, supporting the Continental Navy’s efforts against the British. The sloop-of-war Raleigh, built in Portsmouth in 1776, was among the first commissioned ships of the new American navy. The city also experienced significant fighting, with British forces bombarding Portsmouth in 1774 and again in 1775. Despite these attacks, Portsmouth remained a vital hub for the American cause. After the war, the city became a prominent commercial center, with its port facilitating trade with Europe and the Caribbean.

Modern Portsmouth:

Today, Portsmouth is a vibrant and historic city that attracts visitors from all over the world. The city boasts a thriving arts and culture scene, with numerous galleries, museums, and performance venues. Strawbery Banke Museum, a living history village, offers a glimpse into Portsmouth’s past. The city is also home to a variety of architectural styles, from Colonial and Victorian to modern and contemporary. Portsmouth’s picturesque waterfront area, lined with restaurants and shops, provides a beautiful setting for прогулки and relaxation. The city is also a popular destination for sailing and boating enthusiasts, with its proximity to the Atlantic Ocean and numerous marinas.

Moon’s Appearance and Cycle in Portsmouth

The moon’s appearance in Portsmouth, United States, undergoes a predictable cycle. During the new moon phase, the moon is not visible to the naked eye as it is positioned between the Earth and the sun. As the moon orbits the Earth, it gradually becomes illuminated by sunlight, appearing as a crescent moon. Over the next week, the moon continues to grow, reaching its first quarter phase when half of its surface is lit. As the moon continues its orbit, it becomes a gibbous moon, with more than half of its surface illuminated. Finally, the moon reaches its full phase, during which its entire surface is visible from Earth. After the full moon, the cycle reverses, and the moon gradually wanes back to the new moon phase.

Influence on Tides and Natural Phenomena

The moon also exerts a gravitational influence on Portsmouth’s waters, causing periodic tides. High tide occurs when the moon is closest to Portsmouth in the sky, and low tide occurs when the moon is farthest away. The moon’s influence on the tides is particularly noticeable in Portsmouth’s coastal areas, where the water level can fluctuate significantly between high and low tide. In addition to tides, the moon can also affect other natural phenomena in Portsmouth, such as animal behavior and plant growth. For example, some animals have been observed to adjust their feeding and breeding patterns based on the moon’s cycle, and certain plants may exhibit growth patterns influenced by moonlight.

Portsmouth’s Humidity Profile

Portsmouth, located in the state of New Hampshire, United States, experiences a humid climate characterized by high levels of moisture in the air. The city’s proximity to the Atlantic Ocean contributes significantly to its humidity, with warm, moist air from the ocean influencing the local weather patterns. Portsmouth’s average annual humidity ranges between 60% and 70%. The humidity levels tend to be higher during the summer months, reaching their peak in July and August when they can exceed 80%. During these warm and humid summer days, the air can feel heavy and oppressive, making outdoor activities uncomfortable.

Seasonal Variations in Humidity

In Portsmouth, humidity levels vary throughout the year. During the winter months, when temperatures are colder, the air holds less moisture, resulting in lower humidity levels. The average humidity in January, the coldest month, typically falls below 60%. As spring approaches, the air begins to warm, and the humidity levels start to rise. By May, the average humidity reaches around 65%. Summer is the most humid season in Portsmouth, with average humidity levels exceeding 70%. During this time, the warm, moist air from the ocean creates a humid and often uncomfortable atmosphere. In the fall, the humidity levels gradually decrease as temperatures cool down. By November, the average humidity drops below 65%.

Wind Patterns and Speeds

Portsmouth, located on the southern coast of Rhode Island, experiences a humid subtropical climate characterized by moderate winds. The prevailing wind direction is from the southwest, bringing moist air from the Atlantic Ocean. During the spring and summer months, the wind speeds average between 10-15 mph, providing a gentle breeze throughout the city. The wind tends to be slightly stronger in the afternoons and evenings.

Seasonal Variations and Impacts

The wind patterns in Portsmouth vary seasonally. In the winter months, the wind direction shifts to the northwest, bringing colder and drier air from the interior of the country. The wind speeds during this period can be higher, averaging between 15-20 mph. These strong winds can cause gusts and turbulence, particularly near the waterfront areas. During the fall and spring, the wind speeds tend to be more variable, with occasional gusts and calmer periods. The wind helps to circulate the air, dispersing pollutants and creating a comfortable environment for residents.

Best Time to Visit for Optimal Weather

Portsmouth, located in southeastern New Hampshire, is known for its beautiful coastline, rich history, and charming downtown. The best time to visit Portsmouth for ideal weather conditions is between April and October. During these months, temperatures range from the mid-40s to high 70s, making it comfortable for outdoor activities such as walking, biking, and kayaking. The skies are typically clear, with plenty of sunshine and occasional showers. From June to August, temperatures are at their peak, averaging in the high 70s and low 80s. While it can be warm and humid at times during this period, the cooling ocean breeze often provides relief.

Best Time to Visit for Events and Festivals

If you’re looking to experience Portsmouth’s vibrant cultural scene, consider visiting during the spring or summer months. From May to September, the city hosts a variety of festivals and events that showcase its rich history, maritime heritage, and local arts community. In May, the annual Strawberry Banke Festival celebrates the city’s colonial heritage with traditional music, crafts, and food demonstrations. In June, the Prescott Park Arts Festival features a month-long series of concerts, performances, and art exhibitions in the picturesque Prescott Park. And in August, the Great Bay 500 Festival offers a unique opportunity to witness a grand fireworks display over the Piscataqua River.

Status and Potential

Portsmouth, United States, has experienced a surge in solar energy adoption in recent years. With an abundance of sunshine, the city offers favorable conditions for solar installations. Portsmouth’s commitment to sustainability has driven the adoption of solar technology, which contributes to its clean energy goals. The city’s efforts have been recognized with accolades such as the SolSmart Designation, a national program that acknowledges communities for their support of solar energy.

Incentives and Support

Portsmouth offers a range of incentives to encourage solar development. These include net metering, which allows solar panel owners to sell excess energy back to the grid, and property tax exemptions for solar equipment. Additionally, the city has partnered with local utilities to provide rebates and other financial assistance programs. Portsmouth’s supportive policy environment has fostered a thriving solar industry, with numerous installers operating in the area. Residents and businesses can access technical support and financing options to facilitate their solar installations.

Coastal Plains

Portsmouth, located in southeastern Virginia, lies within the Atlantic Coastal Plain, a vast, low-lying region characterized by gently rolling hills and coastal marshes. The city is situated on the western shore of Chesapeake Bay, the largest estuary in the United States. The elevation in the coastal plain ranges from sea level at the shoreline to approximately 100 feet above sea level inland. The topography is shaped by meandering rivers and streams that have eroded the landscape over time, creating fertile floodplains and terraces. The land is primarily used for agriculture, with a mix of row crops, soybeans, and livestock farming.

Portsmouth Heights and Norfolk Naval Shipyard

Portsmouth Heights, a prominent ridge rising to an elevation of approximately 150 feet above sea level, dominates the city’s western landscape. This natural defense feature was once home to Fort Nelson, a Civil War-era fortification. Today, the area offers scenic views of the city and Chesapeake Bay. At the base of Portsmouth Heights lies the sprawling Norfolk Naval Shipyard, one of the largest and most important naval shipyards in the world. The shipyard covers an area of over 7,000 acres on the waterfront, employing thousands of workers and supporting the maintenance and repair of the U.S. Navy’s Atlantic Fleet. The presence of the shipyard has played a significant role in shaping the economy and infrastructure of Portsmouth.

Portsmouth International Airport at Pease (PSM)

Located just 4 miles northwest of downtown Portsmouth, New Hampshire, Portsmouth International Airport at Pease (PSM) is the nearest and most convenient airport serving the city and its surrounding region. PSM offers nonstop flights to major destinations such as Boston, Philadelphia, and Washington, D.C., making it an ideal gateway for travelers seeking efficient connections to domestic and international hubs. With its proximity to Portsmouth’s vibrant waterfront, historical landmarks, and charming shops, PSM provides a seamless transportation option for visitors and residents alike.

Alternative Airports

While PSM is the closest airport to Portsmouth, there are several alternative airports within driving distance that may offer additional flight options or competitive pricing. Manchester-Boston Regional Airport (MHT), located approximately 52 miles northwest of Portsmouth, is the largest airport in New Hampshire and serves a broader range of destinations. Logan International Airport (BOS) in Boston, Massachusetts, is situated about 90 miles south of Portsmouth and offers extensive domestic and international connections. However, the longer travel times and potential traffic congestion should be considered when weighing these options against the convenience of PSM.

History of Portsmouth

Portsmouth, located in New Hampshire, has a rich and multifaceted history. Established in 1623, it was one of the first European settlements in North America. During the Colonial period, it served as a major seaport and shipbuilding center. Portsmouth played a pivotal role in the American Revolutionary War, being the site of the Continental Navy’s first warship, the Ranger. In the 19th century, the city flourished as a bustling commercial hub, home to prosperous merchants and shipbuilders. Portsmouth’s maritime heritage is still evident today through its historic waterfront and preserved 18th-century buildings.

Tourism and Attractions

Portsmouth is renowned for its stunning coastal scenery, charming architecture, and vibrant arts and culture scene. Visitors can explore the Prescott Park Arts Festival, the Strawbery Banke Museum, and the USS Albacore Museum. The city also boasts beautiful beaches, such as Wallis Sands State Beach and Jenness State Beach. Portsmouth’s historic downtown is a delightful destination for shopping, dining, and taking in the city’s rich history. With its picturesque streets, quaint cafes, and boutique shops, Portsmouth offers a captivating blend of old-world charm and modern amenities, making it a popular tourist destination for those seeking a unique and unforgettable experience.