South Dakota Weather by Month
South Dakota, situated in the north-central United States, is bordered by North Dakota to the north, Minnesota and Iowa to the east, Nebraska to the south, and Wyoming and Montana to the west. It became the 40th state on November 2, 1889. South Dakota’s history is deeply rooted in Native American cultures, particularly the Lakota Sioux, and later influenced by European explorers and American settlers drawn by gold mining and agriculture. Major cities include Sioux Falls (the largest city), Rapid City, Aberdeen, Brookings, and Watertown. Iconic landmarks encompass the Mount Rushmore National Memorial, honoring four U.S. presidents, the Badlands National Park, showcasing stunning geological formations, Wind Cave National Park, and the historic town of Deadwood. South Dakota’s economy relies on industries such as agriculture, tourism, healthcare, and manufacturing, with attractions like the Sturgis Motorcycle Rally and the annual Buffalo Roundup drawing visitors from around the world.
Weather Overview:
South Dakota experiences a continental climate, with hot summers, cold winters, and low humidity. Weather conditions can vary significantly between the eastern and western regions due to differences in elevation and proximity to the Missouri River.
| Month | Average Temperature (°F) | Average Precipitation (inches) |
|---|---|---|
| January | 19.8 | 0.48 |
| February | 24.2 | 0.66 |
| March | 33.8 | 1.27 |
| April | 45.5 | 1.91 |
| May | 56.9 | 2.90 |
| June | 66.9 | 3.55 |
| July | 73.3 | 2.91 |
| August | 71.1 | 2.34 |
| September | 61.4 | 1.92 |
| October | 49.4 | 1.56 |
| November | 34.1 | 0.80 |
| December | 23.1 | 0.57 |
January
January in South Dakota is the heart of winter, with cold temperatures and frequent snowfall blanketing the landscape. Average temperatures range from below freezing in the single digits Fahrenheit (-10 to -6°C) in the eastern part of the state to the low 20s°F (-6 to -3°C) in the western region. Arctic air masses from Canada bring frigid conditions, with occasional outbreaks of extreme cold and wind chill. Snowstorms are common, especially in the eastern half of the state, where lake-effect snow from the Great Lakes can enhance snowfall totals. Travelers visiting South Dakota in January should be prepared for winter weather conditions, including icy roads and limited outdoor activities. However, this month offers opportunities for winter sports enthusiasts, such as skiing, snowboarding, and snowmobiling in the Black Hills region.
February
February continues the winter chill in South Dakota, with cold temperatures and occasional snowfall. Average temperatures remain similar to January, ranging from below freezing in the single digits Fahrenheit (-10 to -6°C) in the east to the low 20s°F (-6 to -3°C) in the west. Snowfall totals may vary depending on the location and intensity of winter storms. February is typically one of the snowiest months of the year in South Dakota, especially in the eastern regions. However, the Black Hills region may experience milder temperatures and less snow accumulation compared to the rest of the state. Travelers visiting South Dakota in February can enjoy winter activities such as cross-country skiing, ice fishing, and sledding, as well as indoor attractions like museums, art galleries, and historic sites.
March
March marks the transition from winter to spring in South Dakota, with gradually warming temperatures and melting snow. Average temperatures begin to rise, ranging from the 20s°F (-6 to -3°C) in the east to the 30s°F (-1 to 2°C) in the west. While snow is still possible, especially early in the month, it tends to melt quickly as temperatures climb above freezing during the day. March can be a dynamic time for weather, with a mix of sunny days, rainy periods, and occasional snow showers. Travelers visiting South Dakota in March can experience the changing seasons, from the last traces of winter to the first signs of spring. Outdoor activities such as hiking, wildlife viewing, and scenic drives become more feasible as the weather improves, offering opportunities to explore South Dakota’s natural beauty.
April
April brings the true arrival of spring to South Dakota, with milder temperatures and blooming flora. Average temperatures range from the 30s°F (1 to 4°C) in the east to the 40s°F (4 to 9°C) in the west. While frost may still occur in some areas, especially during the early mornings, overall conditions become more favorable for outdoor activities and exploration. April showers are common, contributing to the greening of the landscape and the emergence of wildflowers. Travelers visiting South Dakota in April can enjoy outdoor activities such as hiking, biking, and birdwatching in the state’s parks and nature reserves. The Black Hills region offers opportunities for exploring scenic drives, visiting waterfalls, and experiencing the beauty of springtime in the mountains.
May
May is one of the best times to visit South Dakota, with mild temperatures and longer days perfect for outdoor adventures. Average temperatures range from the 40s°F (4 to 9°C) in the east to the 50s°F (10 to 15°C) in the west. Spring blooms reach their peak during this month, with wildflowers carpeting the prairies and hillsides. May offers ideal conditions for hiking, camping, and exploring South Dakota’s national and state parks. The Black Hills region beckons visitors with its iconic landmarks such as Mount Rushmore, Crazy Horse Memorial, and Custer State Park. May is also a popular time for wildlife viewing, as animals emerge from hibernation and migrate to their summer habitats. Travelers visiting South Dakota in May can experience the beauty of spring in full bloom and enjoy a wide range of outdoor activities in the state’s diverse landscapes.
June
June heralds the arrival of summer in South Dakota, with warm temperatures and abundant sunshine. Average temperatures range from the 50s°F (10 to 15°C) in the east to the 60s°F (15 to 20°C) in the west. The weather becomes increasingly conducive to outdoor activities such as hiking, fishing, and boating. South Dakota’s lakes, rivers, and reservoirs provide opportunities for swimming, kayaking, and paddleboarding, while its parks and forests offer scenic settings for picnics, nature walks, and photography. June is also a popular time for visiting South Dakota’s cultural attractions, including Native American heritage sites, pioneer museums, and historic forts. Travelers visiting South Dakota in June can enjoy the warm temperatures, long daylight hours, and wide range of recreational opportunities available throughout the state.
July
July is typically the warmest month of the year in South Dakota, with hot temperatures and plenty of sunshine. Average temperatures range from the 60s°F (15 to 20°C) in the east to the 70s°F (20 to 25°C) in the west. Heatwaves are common, especially in the central and eastern regions, where temperatures can soar into the 90s°F (32 to 35°C) or higher. July is a popular time for outdoor recreation, with visitors flocking to South Dakota’s parks, lakes, and rivers to enjoy swimming, boating, and fishing. The Black Hills region provides relief from the heat with its cooler temperatures and shaded hiking trails. July also brings festivities such as Independence Day celebrations, rodeos, and county fairs. Travelers visiting South Dakota in July can embrace the summertime vibes and take advantage of the state’s abundant recreational opportunities.
August
August continues the hot and sunny conditions of summer in South Dakota, with temperatures remaining high throughout the month. Average temperatures range from the 60s°F (15 to 20°C) in the east to the 70s°F (20 to 25°C) in the west. While the weather can be sweltering, August also brings opportunities for outdoor recreation and relaxation. South Dakota’s parks, forests, and lakes offer refreshing escapes from the summer heat, with activities such as hiking, camping, and wildlife viewing. August is also a popular time for visiting South Dakota’s cultural attractions, including museums, art galleries, and historic sites. Despite the heat, August offers plenty of opportunities for travelers to enjoy the natural beauty and cultural richness of South Dakota.
September
September marks the transition from summer to fall in South Dakota, with gradually cooling temperatures and changing foliage. Average temperatures range from the 50s°F (10 to 15°C) in the east to the 60s°F (15 to 20°C) in the west. While early September may still feel like summer, especially in the central and eastern regions, cooler weather begins to prevail towards the end of the month. September is an ideal time for outdoor activities such as hiking, biking, and wildlife viewing, as the landscape transforms into a tapestry of autumn colors. Fall festivals and events also abound in South Dakota during September, offering opportunities to celebrate the harvest season and local culture. Travelers visiting South Dakota in September can experience the beauty of late summer and early fall, enjoying mild weather and picturesque landscapes before the onset of winter.
October
October is synonymous with fall foliage in South Dakota, as the leaves change colors and the landscape transforms into a breathtaking tapestry of reds, oranges, and yellows. Average temperatures range from the 40s°F (4 to 9°C) in the east to the 50s°F (10 to 15°C) in the west. Cool, crisp days and clear skies make October perfect for outdoor activities such as hiking, scenic drives, and photography. Fall festivals and events continue throughout the month, offering opportunities to celebrate the season with hayrides, pumpkin patches, and harvest markets. Travelers visiting South Dakota in October can immerse themselves in the beauty of fall, exploring scenic drives and hiking trails adorned with vibrant foliage.
November
November marks the transition to winter in South Dakota, with cooling temperatures and occasional frost towards the end of the month. Average temperatures range from the 20s°F (-6 to -3°C) in the east to the 30s°F (-1 to 2°C) in the west. While early November may still feel like fall, with lingering foliage and mild weather, colder conditions become more prevalent as the month progresses. November is a time of transition, with outdoor activities giving way to indoor pursuits such as holiday shopping and cultural events. Travelers visiting South Dakota in November can experience the changing seasons, from the last traces of fall to the first hints of winter, making it an ideal time for cozy getaways and exploring indoor attractions.
December
December brings winter weather to South Dakota, with cold temperatures and the potential for snowfall across the state. Average temperatures range from the teens°F (-9 to -6°C) in the east to the low 20s°F (-6 to -3°C) in the west. While snow is relatively rare in some parts of the state, it can occur, especially in the eastern and northern regions. December also brings festive holiday celebrations and events, offering opportunities to experience the magic of the season. Outdoor activities such as ice skating, sledding, and holiday light displays are popular, providing entertainment for visitors of all ages. December can be a cozy and enchanting time to visit South Dakota, with the promise of winter festivities and seasonal cheer.
