Armour, South Dakota Weather by Month

By | May 3, 2024

Located in the heart of South Dakota, Armour is a small but vibrant community known for its rich agricultural heritage and friendly small-town atmosphere. Situated in Douglas County, Armour is surrounded by rolling prairies and fertile farmland, making it an ideal destination for those seeking a tranquil rural lifestyle. With a population of approximately 700 residents, Armour offers a close-knit community where neighbors know each other by name and everyone pitches in to support local events and initiatives. The town covers an area of about 1.2 square miles, providing plenty of space for residents to enjoy the great outdoors and all that the South Dakota landscape has to offer.

Geography and Location

Armour is located in southeastern South Dakota, located amidst the expansive prairies that characterize much of the region. The town sits along U.S. Highway 281, providing convenient access to nearby cities such as Mitchell and Yankton. The surrounding area is predominantly agricultural, with vast fields of corn, soybeans, and wheat stretching as far as the eye can see. Despite its rural setting, Armour is within driving distance of several major urban centers, making it an ideal location for those seeking a peaceful retreat without sacrificing access to modern amenities and conveniences.

Affiliation and Population

Armour is affiliated with the state of South Dakota and is governed by its laws and regulations. The town’s population consists primarily of families and individuals involved in agriculture, as well as retirees attracted to the area’s peaceful pace of life. With a population of around 700 residents, Armour maintains a strong sense of community pride and camaraderie, with residents coming together to celebrate local events such as the annual Fourth of July parade and the county fair. The town’s small size fosters a close-knit environment where neighbors look out for one another and newcomers are welcomed with open arms.

Major Landmarks

While Armour may be a small town, it boasts several notable landmarks and attractions that highlight its unique character and history. One such landmark is the Douglas County Courthouse, a historic building located in the heart of downtown Armour. Built in 1884, the courthouse is a symbol of the town’s rich heritage and serves as a hub for local government offices and community events.

Another prominent feature of Armour is the Armour Meat Packing Plant, a major employer in the area and an integral part of the town’s economy. The plant processes beef and pork products for distribution across the region, providing jobs and economic stability to many local residents. Additionally, the surrounding countryside offers opportunities for outdoor recreation such as hunting, fishing, and birdwatching, making Armour an ideal destination for nature enthusiasts and outdoor adventurers.

Climate and Weather Overview

Armour experiences a humid continental climate, characterized by four distinct seasons and relatively moderate temperatures throughout the year. The town enjoys warm summers, cold winters, and pleasant transitional periods in the spring and fall. With its location in the Great Plains region, Armour is subject to occasional fluctuations in weather, including thunderstorms, blizzards, and extreme temperature swings.

Average Climate Data

The table below provides average temperature, precipitation, and sunny days for each month in Armour:

Month Average Temperature (Fahrenheit) Precipitation (inches) Sunny Days
January 21.1 0.60 16
February 25.9 0.66 17
March 35.8 1.40 18
April 49.1 2.59 19
May 60.9 3.38 19
June 70.2 3.83 20
July 76.7 3.57 21
August 75.5 2.59 20
September 65.6 2.12 18
October 52.6 1.60 17
November 36.3 1.10 15
December 25.1 0.74 15

Weather by Month


January in Armour is characterized by cold temperatures and occasional snowfall. Average highs hover around 21.1°F, while average lows can drop below zero. Precipitation is relatively low, with an average of 0.60 inches of snowfall. Residents can enjoy outdoor activities such as ice skating, sledding, and snowmobiling, taking advantage of the winter wonderland that blankets the countryside.


February brings slightly warmer temperatures to Armour, with average highs reaching 25.9°F and average lows remaining chilly. Snowfall continues to be a possibility, with an average of 0.66 inches of precipitation. Outdoor enthusiasts may choose to explore local trails for cross-country skiing or snowshoeing, while indoor activities such as cozying up by the fireplace or attending community events offer respite from the cold.


As spring approaches, March sees a significant increase in temperatures in Armour, with average highs rising to 35.8°F. However, snowfall is still common during this transitional period, with an average of 1.40 inches of precipitation. Residents may begin to venture outdoors to enjoy the longer days and milder weather, participating in activities such as maple syrup tapping, birdwatching, and early spring hiking.


April marks the arrival of spring in Armour, with average highs climbing to 49.1°F and the landscape coming alive with blooming flowers and budding trees. Precipitation levels increase, with an average of 2.59 inches of rainfall. Residents can take advantage of the improving weather to engage in outdoor activities such as gardening, fishing, and exploring local parks and nature reserves.


May brings warmer temperatures and longer days to Armour, with average highs reaching 60.9°F and average lows staying mild. Precipitation levels continue to rise, with an average of 3.38 inches of rainfall. The town bursts into bloom as flowers carpet the countryside, providing a beautiful backdrop for outdoor activities such as picnicking, biking, and wildlife watching.


June is characterized by mild temperatures and abundant sunshine in Armour, with average highs averaging around 70.2°F. Precipitation levels remain moderate, with an average of 3.83 inches of rainfall. Residents can enjoy outdoor pursuits such as hiking, camping, and fishing, taking advantage of the long days and warm evenings to explore the natural beauty of the region.


July is the warmest month of the year in Armour, with average highs peaking at 76.7°F and average lows staying mild. Precipitation levels remain steady, with an average of 3.57 inches of rainfall. The month offers residents endless opportunities for outdoor recreation, from swimming and boating to picnicking and attending community events and festivals.


August brings continued warmth and sunshine to Armour, with average highs remaining around 75.5°F. Precipitation levels decrease slightly, with an average of 2.59 inches of rainfall. Residents can take advantage of the pleasant weather to explore local trails, go on nature walks, or enjoy outdoor dining at one of the town’s many restaurants and cafes.


As summer transitions into fall, September brings cooler temperatures and lower humidity to Armour. Average highs drop to 65.6°F, while average lows begin to dip into the 40s°F. Precipitation levels decrease, with an average of 2.12 inches of rainfall. Residents can embrace the changing seasons by participating in fall harvest activities, visiting pumpkin patches, and enjoying scenic drives to admire the autumn foliage.


October ushers in the colors of autumn in Armour, with cooler temperatures and vibrant foliage. Average highs dip to 52.6°F, while average lows fall into the 30s°F. The month sees a decrease in precipitation, with an average of 1.60 inches of rainfall. Residents can embrace the fall season by participating in apple picking, attending fall festivals, and enjoying outdoor activities such as hiking and biking.


November brings cooler temperatures and the possibility of early snowfall to Armour. Average highs average around 36.3°F, while average lows drop below freezing. Precipitation levels decrease, with an average of 1.10 inches of rainfall. Residents may find indoor activities more appealing during this time, such as visiting local museums, attending holiday markets, or cozying up by the fireplace with a good book.


December marks the onset of winter in Armour, with cold temperatures and occasional snowfall. Average highs drop to 25.1°F, while average lows can plunge well below zero. Precipitation levels remain relatively low, with an average of 0.74 inches of snowfall. Residents can embrace the holiday spirit by participating in seasonal activities such as ice skating, tree lighting ceremonies, and holiday shopping in the town’s charming downtown district.

Natural Disasters

While Armour is relatively sheltered from major natural disasters, the region is susceptible to occasional severe weather events such as blizzards, tornadoes, and flooding. These events can disrupt transportation, damage property, and pose risks to public safety. Residents are encouraged to stay informed about weather alerts and to have emergency preparedness plans in place to ensure their safety and well-being.

Recommended Activities

Throughout the year, Armour offers residents and visitors a variety of indoor and outdoor activities to enjoy amidst the beauty of the South Dakota countryside. From exploring local parks and trails to attending community events and festivals, there is something for everyone to experience and enjoy in this friendly small town. Whether you’re seeking outdoor adventures, cultural attractions, or simply a peaceful retreat from the hustle and bustle of everyday life, Armour promises an unforgettable experience in the heart of rural South Dakota.

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