Iowa Weather by Month
Iowa, located in the heart of the American Midwest, experiences a humid continental climate characterized by four distinct seasons, each bringing its own unique weather patterns. Winters in Iowa are cold and snowy, with temperatures often dropping below freezing, particularly in January and February. Snowfall is common, especially in the northern parts of the state, creating a picturesque winter landscape. Spring brings a gradual warming, along with frequent rain showers that help nourish the state’s rich agricultural lands. Summers in Iowa are warm and humid, with temperatures frequently reaching the 80s°F to 90s°F (27°C to 32°C). Thunderstorms are common in the summer months, sometimes bringing heavy rain and the occasional tornado. Fall is a beautiful season in Iowa, with cooler temperatures and vibrant foliage that attract visitors to the state’s many parks and scenic byways. The changing weather across the seasons makes Iowa a dynamic place to experience a variety of outdoor activities, from winter sports and spring festivals to summer fairs and autumn hikes.
Average Temperature and Precipitation by Month
| Month | Avg Temp (°F) | Avg Temp (°C) | Avg Precipitation (inches) |
|---|---|---|---|
| January | 21°F | -6°C | 1.0 |
| February | 25°F | -4°C | 1.1 |
| March | 37°F | 3°C | 2.1 |
| April | 50°F | 10°C | 3.2 |
| May | 61°F | 16°C | 4.3 |
| June | 71°F | 22°C | 4.6 |
| July | 75°F | 24°C | 4.2 |
| August | 73°F | 23°C | 4.4 |
| September | 64°F | 18°C | 3.5 |
| October | 52°F | 11°C | 2.4 |
| November | 38°F | 3°C | 2.1 |
| December | 25°F | -4°C | 1.3 |
Monthly Weather, Clothing, and Landmarks
January
Weather: January is the coldest month in Iowa, with average temperatures ranging from 10°F to 30°F (-12°C to -1°C). Snowfall is common, particularly in the northern regions, creating a winter wonderland across the state. Cold winds and icy conditions are typical, especially in more exposed areas.
Clothing: To stay warm in January, dress in heavy winter clothing, including thermal layers, a down coat, gloves, scarves, and a hat. Waterproof boots with good insulation are necessary for navigating snow and ice, especially in northern regions. Snow pants or insulated leggings are recommended for outdoor activities.
Landmarks: January is a great time to visit the Amana Colonies, a group of seven historic villages known for their well-preserved 19th-century buildings, where you can experience traditional German crafts, food, and culture. For winter sports enthusiasts, head to Sundown Mountain Resort in Dubuque, offering skiing, snowboarding, and tubing. If you prefer a more tranquil winter experience, explore the frozen beauty of the Loess Hills State Forest, where you can hike or snowshoe through scenic trails with views of unique landforms covered in snow.
February
Weather: February in Iowa remains cold, with temperatures ranging from 15°F to 35°F (-9°C to 2°C). Snow continues to blanket much of the state, particularly in the northern regions, while southern Iowa may experience occasional snow mixed with rain. The days start to lengthen slightly, but winter conditions persist.
Clothing: Warm layers are essential in February, including a heavy winter coat, thermal clothing, and insulated boots. Gloves, a hat, and a scarf are necessary to protect against the cold winds. Waterproof outerwear is recommended, particularly in regions prone to snow and ice.
Landmarks: February is a great time to visit the Des Moines Art Center, where you can explore contemporary and modern art in a warm indoor setting. For a romantic winter getaway, head to the quaint town of Pella, known for its Dutch heritage, charming architecture, and cozy bed-and-breakfasts. The Maquoketa Caves State Park is also worth a visit, where the snow-covered caves and trails offer a unique winter landscape for adventurous hikers and photographers.
March
Weather: March marks the beginning of spring in Iowa, with average temperatures ranging from 25°F to 45°F (-4°C to 7°C). The weather is variable, with the possibility of both snow and rain as the state transitions from winter to spring. Southern Iowa begins to see the first signs of blooming flowers and budding trees.
Clothing: Layered clothing is ideal for March, as temperatures can fluctuate throughout the day. A medium-weight jacket, along with a hat and gloves, is recommended for colder mornings and evenings. Waterproof boots are useful for navigating slushy or wet conditions.
Landmarks: March is an excellent time to visit the Herbert Hoover National Historic Site in West Branch, where you can learn about the life of the 31st President of the United States and explore the surrounding grounds as they begin to show the first signs of spring. The Neal Smith National Wildlife Refuge, just outside Des Moines, offers a chance to see native prairie landscapes coming back to life after winter, with trails and a visitor center that provide insight into Iowa’s natural history.
April
Weather: April in Iowa brings more consistent spring weather, with temperatures ranging from 38°F to 60°F (3°C to 16°C). Rain showers become more frequent, helping to green the landscape and encourage the growth of flowers and trees. The state’s northern regions may still experience the occasional cool day, while southern areas warm up more quickly.
Clothing: Light layers, including long-sleeved shirts, a medium-weight jacket, and waterproof footwear, are ideal for April. An umbrella or raincoat is recommended for dealing with spring showers, and comfortable walking shoes are useful for exploring outdoor attractions.
Landmarks: April is a wonderful time to visit the Pella Tulip Time Festival, where the town’s Dutch heritage is celebrated with vibrant tulip displays, parades, traditional music, and dance. For outdoor enthusiasts, Ledges State Park near Boone offers stunning views of sandstone cliffs, wooded ravines, and the Des Moines River, making it a great spot for hiking as the landscape comes to life in spring. The Grotto of the Redemption in West Bend, a unique religious shrine built from minerals and stones, is another must-visit, especially as the gardens begin to bloom.
May
Weather: May sees the full arrival of spring in Iowa, with temperatures ranging from 50°F to 70°F (10°C to 21°C). The weather is mild and pleasant, with frequent sunshine and occasional rain showers. Flowers and trees are in full bloom, making the state’s landscapes particularly beautiful during this time.
Clothing: Light, breathable clothing such as t-shirts, light jackets, and comfortable walking shoes are ideal for May. A rain jacket or umbrella may be needed for occasional showers, and sun protection, including sunscreen and a hat, is recommended.
Landmarks: May is an ideal time to visit the Bridges of Madison County, where you can explore the iconic covered bridges that inspired the famous novel and film. The rolling hills and blooming landscapes make for picturesque drives and walks. The Iowa State Capitol in Des Moines, with its stunning architecture and rich history, is another must-visit, offering guided tours that showcase the state’s legislative history. The Amana Colonies host Maifest in May, a traditional German festival featuring maypole dancing, music, and local crafts, providing a cultural experience in a beautiful spring setting.
June
Weather: June ushers in summer across Iowa, with temperatures ranging from 60°F to 80°F (16°C to 27°C). The weather is warm, with longer daylight hours and moderate humidity. The state’s landscapes are lush and green, making it an ideal time for outdoor activities and events.
Clothing: Light, breathable clothing such as shorts, t-shirts, and sandals is recommended for June. A hat, sunglasses, and sunscreen are essential for sun protection, and a light jacket may be useful for cooler evenings, especially in northern regions.
Landmarks: June is an excellent time to visit the Field of Dreams Movie Site in Dyersville, where you can play a game of catch on the iconic baseball field featured in the beloved film. The Des Moines Arts Festival, held in late June, is a major cultural event that attracts artists and visitors from across the country with its art exhibits, live music, and food vendors. For nature lovers, the Effigy Mounds National Monument along the Mississippi River offers scenic trails and ancient Native American burial mounds, providing a peaceful setting for hiking and reflection.
July
Weather: July is the hottest month in Iowa, with temperatures ranging from 65°F to 85°F (18°C to 29°C). The weather is hot and humid, with frequent afternoon thunderstorms providing brief relief from the heat. The long days and warm temperatures make it the peak season for outdoor activities and events across the state.
Clothing: Wear light, breathable clothing such as shorts, tank tops, and sandals. Sun protection is crucial, so be sure to use sunscreen, wear sunglasses, and a hat. A light rain jacket or umbrella may be needed for afternoon thunderstorms.
Landmarks: July is ideal for enjoying Iowa’s many outdoor attractions, such as the Iowa State Fair in Des Moines, one of the largest and most famous state fairs in the country, featuring agricultural exhibits, carnival rides, live music, and a variety of food vendors. For a more rural experience, visit the Loess Hills Scenic Byway in western Iowa, where you can drive through unique landscapes formed by windblown soil, with opportunities for hiking, birdwatching, and photography. The Mississippi River is another great destination in July, with options for boating, fishing, and exploring charming river towns like Dubuque and Bellevue.
August
Weather: August continues the hot and humid trend in Iowa, with temperatures ranging from 63°F to 83°F (17°C to 28°C). The heat and humidity remain high, with frequent afternoon thunderstorms. The weather is similar to July, making it a great time for late-summer outdoor activities.
Clothing: Light, airy clothing is recommended in August, including shorts, t-shirts, and sandals. Sunscreen, sunglasses, and a hat are necessary for sun protection. A rain jacket or umbrella is useful for the inevitable afternoon showers.
Landmarks: August is a great time to visit the Iowa State Fair in Des Moines, where you can enjoy a wide range of activities, including agricultural exhibits, live music, carnival rides, and delicious fair food. For nature lovers, head to the Okoboji Lakes in northwest Iowa, a popular summer destination offering boating, fishing, and swimming in clear blue waters. The Amana Colonies host several events throughout the summer, including the Festival of the Arts in August, where you can enjoy local crafts, food, and music in a historic setting.
September
Weather: September brings the first hints of fall to Iowa, with temperatures ranging from 55°F to 75°F (13°C to 24°C). The weather remains warm, but the humidity begins to decrease, making the outdoors more comfortable. The state’s landscapes start to show early signs of fall foliage, particularly in the northern regions.
Clothing: Light layers are ideal for September, with t-shirts and shorts for the warmer parts of the day and a light jacket or sweater for cooler mornings and evenings. Comfortable walking shoes are recommended for exploring outdoor areas.
Landmarks: September is the perfect time to visit the Mississippi River towns along the Great River Road, where you can enjoy scenic drives and explore historic sites with early fall colors. The Amana Colonies’ Oktoberfest, held in late September, is a popular event celebrating German culture with traditional food, music, and dance. For a more adventurous experience, head to the Backbone State Park near Dundee, where you can hike, fish, and camp among the park’s rugged limestone bluffs and dense forests.
October
Weather: October sees a significant drop in temperatures, ranging from 44°F to 65°F (7°C to 18°C). The fall foliage reaches its peak, particularly in the northern and central parts of the state. The weather is typically dry and sunny, making it perfect for outdoor activities and enjoying the vibrant autumn colors.
Clothing: Warmer layers, including sweaters, jackets, and long pants, are necessary for October. A heavier coat may be needed for cold days, especially in the northern regions. Comfortable walking shoes are essential for exploring trails and parks.
Landmarks: October is the perfect time to visit Effigy Mounds National Monument, where the fall foliage creates a stunning landscape of vibrant reds, oranges, and yellows. The park’s trails offer beautiful views of the Mississippi River and the surrounding bluffs. For a unique fall experience, visit the Maquoketa Caves State Park, where you can explore underground caves and enjoy the autumn colors above ground. The Amana Colonies’ Oktoberfest continues into October, offering a chance to explore Iowa’s German heritage with festive events and activities.
November
Weather: November in Iowa sees the onset of winter, with temperatures dropping to between 35°F and 50°F (2°C to 10°C). The fall foliage begins to fade, and the state starts to experience more frequent frosts and the possibility of the first snowfall of the season.
Clothing: Warm layers, including sweaters and jackets, are necessary in November. A winter coat, gloves, and a hat may be needed for colder days, particularly in the northern parts of the state. Waterproof footwear is recommended for dealing with wet or frosty conditions.
Landmarks: November is a great time to visit the National Mississippi River Museum & Aquarium in Dubuque, where you can learn about the natural and cultural history of the Mississippi River while staying warm indoors. The Living History Farms in Urbandale offers a unique experience, where you can explore historical farmsteads and see how Iowans lived and worked in the 19th and early 20th centuries. The town of Pella is also worth a visit in November, where you can explore the historic Dutch architecture and enjoy the early holiday decorations.
December
Weather: December in Iowa is characterized by cold temperatures and the approach of winter, with averages ranging from 22°F to 40°F (-6°C to 4°C). Snow is possible, particularly in the northern regions, and the state’s landscapes take on a wintry appearance with bare trees and occasional snow cover.
Clothing: Heavy winter clothing, including coats, scarves, gloves, and hats, is necessary for staying warm in December. Waterproof boots are essential for navigating snow and slush. Layering is key to staying comfortable in the fluctuating indoor and outdoor temperatures.
Landmarks: December is the perfect time to experience the holiday season in Iowa. Visit the Brucemore Historic Estate in Cedar Rapids, where the mansion is beautifully decorated for the holidays, offering tours and special events. The town of Amana hosts several holiday-themed events, including Christmas in the Colonies, where you can enjoy traditional German holiday treats, crafts, and festive decorations. For a more adventurous winter experience, head to the Loess Hills State Forest, where you can hike or snowshoe through snow-covered trails and enjoy the peaceful winter landscape.
