New Hampshire Weather by Month
New Hampshire, located in the New England region of the northeastern United States, experiences a humid continental climate, characterized by four distinct seasons. Winters are cold and snowy, particularly in the northern parts of the state and the White Mountains, where snowfall is heavy and temperatures frequently drop below freezing. January is typically the coldest month. Spring arrives gradually, with milder temperatures and melting snow giving way to blooming flowers. Summers in New Hampshire are warm, especially in the southern parts of the state, with temperatures often reaching the 80s°F (27-32°C). The coastal areas can be more temperate due to the influence of the Atlantic Ocean. Fall is perhaps the most celebrated season in New Hampshire, with cooler temperatures and vibrant foliage attracting visitors from across the country. Rainfall is fairly consistent throughout the year, with occasional storms, particularly in the spring and fall. The state’s diverse climate makes it a year-round destination, offering everything from skiing in the winter to hiking and leaf-peeping in the fall.
| Month | Avg. Temp (°F) | Avg. Temp (°C) | Avg. Precipitation (in) |
|---|---|---|---|
| January | 10-30 | -12 to -1 | 3.1 |
| February | 13-34 | -11 to 1 | 2.7 |
| March | 22-44 | -6 to 7 | 3.5 |
| April | 33-57 | 1 to 14 | 3.5 |
| May | 43-69 | 6 to 21 | 3.6 |
| June | 52-77 | 11 to 25 | 3.5 |
| July | 58-82 | 14 to 28 | 3.6 |
| August | 56-80 | 13 to 27 | 3.8 |
| September | 48-71 | 9 to 22 | 3.7 |
| October | 37-60 | 3 to 16 | 3.8 |
| November | 28-47 | -2 to 8 | 4.2 |
| December | 17-35 | -8 to 2 | 3.6 |
January
Weather Description
January is the coldest month in New Hampshire, with average temperatures ranging from 10°F to 30°F (-12°C to -1°C). The state experiences frosty mornings and cold afternoons, with significant snowfall, particularly in the northern regions and the White Mountains. The weather is typically overcast, with occasional snowstorms that can lead to heavy snow accumulations.
Clothes to Wear
Dressing warmly is essential in January. Layering with thermal undergarments, sweaters, and a heavy winter coat is recommended. A hat, gloves, and scarf are also necessary to protect against the cold. Waterproof boots are advisable, especially if you’re venturing into areas that receive significant snowfall.
Major Landmarks Recommended
January is an excellent time to visit Mount Washington for winter sports such as skiing and snowboarding. Portsmouth offers indoor attractions like the Strawbery Banke Museum and the Portsmouth Harbor Lighthouse, providing a warm escape from the winter chill. Franconia Notch State Park offers a serene winter landscape, perfect for snowshoeing and photography.
February
Weather Description
February in New Hampshire remains cold, with temperatures averaging between 13°F and 34°F (-11°C to 1°C). Snow is common, particularly in the northern parts of the state and the mountains, while the southern regions may experience milder conditions with occasional rain. The days start to lengthen slightly, but winter conditions still dominate.
Clothes to Wear
Layering remains important in February. A medium to heavy-weight jacket, along with thermal clothing, is ideal. Waterproof boots, gloves, a hat, and a scarf are necessary, especially if you are visiting the higher elevations or during early mornings and evenings.
Major Landmarks Recommended
February is a great time to explore Mount Washington, where the winter landscape offers a unique opportunity for skiing, snowboarding, and snowshoeing. Portsmouth offers indoor activities like the Strawbery Banke Museum and the Portsmouth Harbor Lighthouse, providing a warm escape from the winter chill. Franconia Notch State Park is ideal for a quiet winter getaway, with cozy inns and scenic snow-covered trails.
March
Weather Description
March in New Hampshire signals the beginning of spring, with temperatures ranging from 22°F to 44°F (-6°C to 7°C). The weather begins to warm up slightly, but snowstorms are still possible, particularly in early March. Rain showers become more frequent as the state transitions from winter to spring.
Clothes to Wear
Layering remains important in March. A medium-weight jacket, along with thermal clothing, is recommended. Waterproof boots are essential for dealing with melting snow and mud, while a light hat and gloves may still be necessary for colder days.
Major Landmarks Recommended
March is a great time to visit Franconia Notch State Park, where the first signs of spring begin to appear in the form of blooming flowers and greening trees. Portsmouth offers cultural attractions like the Strawbery Banke Museum, perfect for exploring on a rainy day. Mount Washington provides an early spring escape, with scenic drives and outdoor activities.
April
Weather Description
April brings more noticeable spring weather to New Hampshire, with average temperatures ranging from 33°F to 57°F (1°C to 14°C). The snow begins to melt, and the landscape starts to green up. Rain showers are more frequent, and the state sees the first significant signs of spring.
Clothes to Wear
Spring layers are ideal for April. A medium-weight jacket, long-sleeve shirts, and comfortable pants are recommended. Waterproof shoes and a rain jacket are essential for staying dry during the frequent rain showers. As temperatures can rise during the day, it’s a good idea to have lighter layers underneath.
Major Landmarks Recommended
April is a fantastic time to visit Franconia Notch State Park, where the warming temperatures make hiking more comfortable. Portsmouth offers cultural attractions like the Strawbery Banke Museum and the Portsmouth Harbor Lighthouse, providing a warm escape from the winter chill. Mount Washington provides an early spring escape, with scenic drives and outdoor activities.
May
Weather Description
May in New Hampshire brings warmer temperatures, with averages ranging from 43°F to 69°F (6°C to 21°C). The state becomes lush and green, with flowers blooming and trees fully leafing out. Rain showers are still common, but the warmer temperatures make this a pleasant month for outdoor activities.
Clothes to Wear
May requires a versatile wardrobe to handle the variable weather. Light layers such as t-shirts and long-sleeve shirts, paired with a light jacket or sweater, are ideal. Waterproof clothing, including a rain jacket and sturdy boots, is recommended for those venturing into nature. As temperatures rise, you can start to swap heavier winter gear for lighter, more breathable options.
Major Landmarks Recommended
May is an excellent time to visit Franconia Notch State Park, where the warming temperatures make hiking more comfortable. Portsmouth offers cultural attractions like the Strawbery Banke Museum and the Portsmouth Harbor Lighthouse, providing a warm escape from the winter chill. Mount Washington provides an early spring escape, with scenic drives and outdoor activities.
June
Weather Description
June ushers in the warmth of early summer in New Hampshire, with temperatures ranging from 52°F to 77°F (11°C to 25°C). The state’s landscapes are lush and green, with wildflowers in full bloom. The weather is generally mild and pleasant, making it an ideal time for outdoor activities.
Clothes to Wear
With the arrival of warmer weather, lighter clothing becomes more appropriate. T-shirts, light long-sleeve shirts, and hiking pants are ideal for daytime activities. However, evenings can still be cool, so a light jacket or fleece is recommended. Sunscreen, hats, and sunglasses are also important to protect against the strong summer sun.
Major Landmarks Recommended
June is one of the best times to explore Franconia Notch State Park, where the warm weather makes for excellent hiking and wildlife viewing. The Portsmouth Harbor Lighthouse provides beautiful trails for hiking and wildlife viewing. For those interested in New Hampshire’s cultural history, the Strawbery Banke Museum in Portsmouth offers fascinating exhibits and beautiful views of the surrounding landscape.
July
Weather Description
July is the warmest month in New Hampshire, with temperatures averaging between 58°F and 82°F (14°C to 28°C). The weather is generally warm and dry, making it the peak season for outdoor activities. This is the best time to explore New Hampshire’s natural beauty, from its mountains to its forests.
Clothes to Wear
Summer attire is suitable for July, including t-shirts, shorts, and breathable fabrics. However, temperatures can drop in the evenings, so a light jacket or sweater is still advisable. Comfortable hiking shoes or sandals are recommended for outdoor activities, and don’t forget sun protection, including sunscreen, hats, and sunglasses.
Major Landmarks Recommended
July is perfect for visiting Franconia Notch State Park, where the warm weather makes for excellent hiking and wildlife viewing. The Portsmouth Harbor Lighthouse provides beautiful trails for hiking and wildlife viewing. For those interested in New Hampshire’s cultural history, the Strawbery Banke Museum in Portsmouth offers fascinating exhibits and beautiful views of the surrounding landscape.
August
Weather Description
August continues the warm summer weather in New Hampshire, with temperatures ranging from 56°F to 80°F (13°C to 27°C). The days are long and sunny, making it an ideal month for outdoor adventures. This is the driest month of the year, particularly in Western New Hampshire, offering perfect conditions for exploring the outdoors.
Clothes to Wear
Light, breathable clothing is best for August, with t-shirts, shorts, and comfortable hiking gear being essential. A lightweight rain jacket or poncho can be useful in case of unexpected showers. Sun protection remains important, so hats, sunglasses, and sunscreen are necessary for any outdoor activities.
Major Landmarks Recommended
August is an excellent time to explore Franconia Notch State Park, where the warm weather makes for excellent hiking and wildlife viewing. The Portsmouth Harbor Lighthouse provides beautiful trails for hiking and wildlife viewing. For those interested in New Hampshire’s cultural history, the Strawbery Banke Museum in Portsmouth offers fascinating exhibits and beautiful views of the surrounding landscape.
September
Weather Description
September in New Hampshire marks the beginning of fall, with temperatures cooling to an average range of 48°F to 71°F (9°C to 22°C). The days are still warm and pleasant, but the nights become cooler, and the first signs of autumn appear in the changing colors of the leaves. This is one of the best months for outdoor activities, with fewer crowds and stunning landscapes.
Clothes to Wear
Layering is key in September, as temperatures can vary widely throughout the day. A combination of t-shirts, long-sleeve shirts, and a medium-weight jacket or fleece is recommended. Comfortable hiking boots and a hat are essential for exploring the outdoors, and a light rain jacket can be useful for unexpected showers.
Major Landmarks Recommended
September is a prime time to visit Franconia Notch State Park, where the fall colors begin to emerge, creating a stunning backdrop for hiking and photography. The Portsmouth Harbor Lighthouse provides beautiful trails for hiking and wildlife viewing. For those interested in New Hampshire’s cultural history, the Strawbery Banke Museum in Portsmouth offers fascinating exhibits and beautiful views of the surrounding landscape.
October
Weather Description
October in New Hampshire brings more noticeable autumn weather, with temperatures averaging between 37°F and 60°F (3°C to 16°C). The state begins to prepare for winter, with cooler days and chilly nights. Snowfall is possible, particularly at higher elevations, and the fall colors reach their peak, creating a beautiful contrast against the rugged terrain.
Clothes to Wear
As temperatures drop, warmer clothing becomes necessary. Layered clothing, including long-sleeve shirts, sweaters, and a warm jacket, is ideal for October. A beanie, gloves, and waterproof boots are recommended for those venturing into higher elevations or preparing for the possibility of early snowfall.
Major Landmarks Recommended
October is a great time to visit Franconia Notch State Park, where the fall colors provide a stunning backdrop for outdoor activities like hiking, biking, and apple picking. The Portsmouth Harbor Lighthouse provides beautiful trails for hiking and wildlife viewing. For those interested in New Hampshire’s cultural history, the Strawbery Banke Museum in Portsmouth offers fascinating exhibits and beautiful views of the surrounding landscape.
November
Weather Description
November in New Hampshire signals the transition from fall to winter, with average temperatures ranging from 28°F to 47°F (-2°C to 8°C). Snow becomes more common, especially in the mountains, and the state begins to experience winter conditions. The days are shorter, and the weather is often cold and crisp.
Clothes to Wear
Warm, insulated clothing is necessary for November, including thermal layers, a heavy winter coat, and insulated boots. Hats, gloves, and scarves are also important to protect against the cold. If you plan to spend time outdoors, consider wearing waterproof clothing to handle snow and slush.
Major Landmarks Recommended
November is a quieter time to visit Franconia Notch State Park, where the snow-capped mountains create a breathtaking winter landscape. The Portsmouth Harbor Lighthouse provides beautiful trails for hiking and wildlife viewing. For those interested in New Hampshire’s cultural history, the Strawbery Banke Museum in Portsmouth offers fascinating exhibits and beautiful views of the surrounding landscape.
December
Weather Description
December in New Hampshire is marked by cold temperatures and frequent snowfall, with average temperatures ranging from 17°F to 35°F (-8°C to 2°C). The state is transformed into a winter wonderland, with snow covering the mountains and plains. The days are short, but the festive atmosphere of the holiday season brings warmth and cheer to the cold winter days.
Clothes to Wear
Winter gear is essential in December, including thermal underwear, a thick sweater, a heavy winter coat, and insulated boots. Accessories like hats, gloves, and scarves are necessary to protect against the cold and wind. Layering is key to staying warm, especially if you plan to spend time outdoors.
Major Landmarks Recommended
December is the perfect time to visit Franconia Notch State Park, where the ski season is in full swing, and the town is decked out in holiday lights and decorations. The Portsmouth Harbor Lighthouse provides beautiful trails for hiking and wildlife viewing. For those interested in New Hampshire’s cultural history, the Strawbery Banke Museum in Portsmouth offers fascinating exhibits and beautiful views of the surrounding landscape.
