Located in the beautiful Sussex County, Andover is a charming township located in the northwestern part of New Jersey, United States. Situated amid the rolling hills and lush forests of the region, Andover offers residents and visitors alike a serene retreat from the hustle and bustle of urban life. With a population of approximately 6,000 residents, Andover retains a small-town atmosphere while providing easy access to nearby cities such as Newark and New York City. The township’s rich history, scenic beauty, and outdoor recreational opportunities make it a popular destination for nature enthusiasts, history buffs, and anyone seeking a tranquil escape in the heart of northern New Jersey.
Climate and Weather Overview
Andover, New Jersey, experiences a humid continental climate, characterized by four distinct seasons with varying temperatures and precipitation levels throughout the year. The township enjoys warm summers, crisp autumns, cold winters, and mild springs, offering residents and visitors a diverse range of outdoor activities to enjoy in every season.
Average Climate Data
The table below provides average temperature, precipitation, and sunny days for each month in Andover, New Jersey:
| Month | Average Temperature (Fahrenheit) | Precipitation (inches) | Sunny Days |
| January | 31.5 | 3.7 | 18 |
| February | 33.9 | 3.0 | 17 |
| March | 41.9 | 4.0 | 19 |
| April | 52.7 | 4.2 | 20 |
| May | 63.7 | 4.1 | 22 |
| June | 72.8 | 4.1 | 23 |
| July | 77.9 | 4.7 | 23 |
| August | 76.6 | 4.2 | 23 |
| September | 69.4 | 3.9 | 23 |
| October | 58.5 | 4.1 | 21 |
| November | 47.2 | 3.7 | 19 |
| December | 36.6 | 3.8 | 18 |
Weather by Month
January
January in Andover brings cold temperatures and occasional snowfall. Average temperatures hover around 31.5°F, with nighttime lows often dropping below freezing. Snowstorms are common during this month, covering the landscape in a blanket of white and providing opportunities for outdoor winter activities such as skiing, snowboarding, and sledding. Indoor activities like visiting local museums, art galleries, and cozy cafes are also popular choices for residents and visitors looking to escape the cold.
February
February continues the cold and snowy weather in Andover, with average temperatures averaging around 33.9°F. Snowfall remains common throughout the month, although the intensity may vary. Outdoor enthusiasts can enjoy activities such as snowshoeing, ice fishing, and winter hiking in nearby parks and forests. For those seeking indoor entertainment, the township offers a variety of cultural attractions, including theaters, historical sites, and art centers.
March
March marks the transition to spring in Andover, with gradually warming temperatures and longer daylight hours. Average highs reach 41.9°F, and the township experiences milder weather with occasional rain showers. As the snow begins to melt, residents and visitors can enjoy outdoor activities such as hiking, biking, and birdwatching in local parks and nature reserves. March also brings the first signs of spring blooms, with daffodils and crocuses starting to emerge from the thawing ground.
April
April brings warmer temperatures and blooming flowers to Andover, New Jersey. Average highs climb to 52.7°F, and the township experiences longer days and milder nights. Spring blossoms adorn the landscape, and outdoor enthusiasts can enjoy activities such as picnicking, gardening, and nature walks in local parks and gardens. April also marks the beginning of the trout fishing season, with anglers flocking to nearby streams and rivers to catch the prized fish.
May
May is characterized by mild temperatures and abundant sunshine in Andover. Average highs peak at 63.7°F, and the township experiences longer days and warmer evenings, perfect for outdoor adventures. Residents and visitors can explore the township’s parks and trails, go boating or fishing on nearby lakes and rivers, or take scenic drives to admire the blooming wildflowers. May also brings the opportunity to participate in outdoor festivals, farmers’ markets, and community events celebrating the arrival of spring.
June
June marks the beginning of summer in Andover, with warm temperatures and plenty of sunshine. Average highs reach 72.8°F, and the township experiences long, sunny days perfect for outdoor recreation. Residents and visitors can enjoy a variety of activities such as hiking, camping, and picnicking in local parks and wilderness areas, or take scenic drives to explore the surrounding countryside. June also brings the opportunity for water-based activities such as rafting, kayaking, and paddleboarding on nearby lakes and rivers.
July
July is the peak of summer in Andover, with hot temperatures and clear skies. Average highs peak at 77.9°F, and the township experiences long, sunny days perfect for outdoor adventures. Residents and visitors can enjoy a variety of activities such as swimming, fishing, and boating in local lakes and rivers, or explore the township’s scenic trails and viewpoints. July also brings the opportunity to attend outdoor events and festivals, including concerts, farmers’ markets, and Fourth of July celebrations.
August
August continues the warm and sunny weather in Andover, with average highs averaging around 76.6°F. While temperatures remain warm, the township experiences occasional afternoon thunderstorms, providing relief from the summer heat. Residents and visitors can enjoy a variety of outdoor activities such as hiking, camping, and wildlife watching in local parks and wilderness areas, or cool off with a refreshing swim in a nearby lake or stream. August also brings the opportunity to attend seasonal events and festivals celebrating the township’s culture and heritage.
September
September brings cooler temperatures and changing foliage to Andover, marking the transition to fall. Average highs drop to 69.4°F, and the township experiences crisp mornings and mild afternoons. Residents and visitors can enjoy a variety of outdoor activities such as hiking, biking, and wildlife watching in local parks and forests, or take a scenic drive to admire the fall colors. September also brings the opportunity to attend harvest festivals and events celebrating the bounty of the season.
October
October is characterized by cooler temperatures and stunning fall foliage in Andover, New Jersey. Average highs dip to 58.5°F, and the township experiences clear skies and cool evenings, making it the perfect time for outdoor adventures. Residents and visitors can explore the scenic countryside by hiking, biking, or driving along scenic routes to view the fall colors. October also brings seasonal events and festivals celebrating the autumn harvest, with many local farms and wineries hosting tastings, hayrides, and pumpkin patches for visitors to enjoy.
November
November brings the onset of winter chill to Andover, with colder temperatures and occasional snowfall. Average highs average around 47.2°F, and the township experiences shorter days and cooler nights as winter approaches. Despite the cooler weather, residents and visitors can still enjoy outdoor activities such as hiking, fishing, and wildlife watching in local parks and wilderness areas. November also marks the start of the holiday season, with many residents and businesses decorating for Thanksgiving and Christmas.
December
December marks the peak of winter in Andover, New Jersey, with cold temperatures and occasional snowfall. Average highs drop to 36.6°F, and the township experiences shorter days and longer nights as the winter solstice approaches. While outdoor activities may be limited due to the inclement weather, residents and visitors can still enjoy indoor pursuits such as visiting holiday markets, attending seasonal events and performances, and exploring the township’s festive decorations and displays.
Natural Disasters
While Andover, New Jersey, is not immune to natural disasters, it is relatively sheltered compared to other regions. The area is prone to occasional severe weather events such as thunderstorms, high winds, and heavy rainfall, which can result in localized flooding and property damage. Additionally, winter storms and blizzards can bring significant snowfall and icy conditions, affecting travel and outdoor activities. Residents and visitors are encouraged to stay informed about weather forecasts and advisories, as well as to have emergency supplies and evacuation plans in place to ensure their safety during times of crisis.
Recommended Activities
Throughout the year, Andover offers residents and visitors a variety of indoor and outdoor activities to enjoy amidst its scenic beauty and charming atmosphere. From hiking and fishing in the summer to skiing and snowboarding in the winter, there is something for everyone to experience and enjoy in this idyllic township. Whether you’re seeking outdoor adventure, cultural enrichment, or simply a peaceful retreat, Andover promises an unforgettable experience for all who visit.