Yearly & Monthly weather - Iowa, USA (2024)

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Contents

  • The climate of Iowa
  • The best time to visit Iowa
  • The worst time to visit Iowa
  • Spring weather in Iowa
  • Summer weather in Iowa
  • Autumn weather in Iowa
  • Winter weather in Iowa
  • Weather in January
  • Weather in February
  • Weather in March
  • Weather in April
  • Weather in May
  • Weather in June
  • Weather in July
  • Weather in August
  • Weather in September
  • Weather in October
  • Weather in November
  • Weather in December
  • Weather forecast for your location

The climate of Iowa

Iowa experiences a humid continental climate (Köppen climate classification Dfa) with hot summers and cold winters.
Missouri in the south, Nebraska in the west, South Dakota in the northwest, Minnesota in the north, Wisconsin in the northeast and Illinois in the east, bordering the state. Iowa lies in the far interior of the continent, and the majority of the state rests in a similar climatic zone. The near absence of high mountain ranges, decline in tree cover, and remoteness from major seas and oceans contribute to extreme seasonal variations in the weather.

Iowa, the Hawkeye state, mainly consists of prairie and savanna type grasslands, forests, and wetlands, although agriculture lands, pastures, and urban dwellings have replaced most of the original natural habitat. The state is short of towering mountain ranges. However, the landscape is uneven with many rolling hills, lakes such as Spirit Lake, West Okoboji Lake, East Okoboji Lake, and Clear Lake, and rivers such as the Mississippi, Missouri, Big Sioux, and Des Moines. Northeast Iowa consists of steep hills and valleys in contrast to the rest of the state.


The best time to visit Iowa

Autumn is the best time to visit Iowa, during September and October, while late fall is cold and windy.
The conditions are pleasant compared to the heat of summer and the cold of winter. Late spring is subject to thunderstorms, while summer experiences severe flooding many times. The middle part of spring around April is also an excellent time to visit Iowa. Summers tend to be hot and humid and the peak tourist season in Iowa, so traveling during the spring and fall is more economical than during the summer.


The worst time to visit Iowa

November to February is the worst time to visit Iowa as the state lies in the grip of severe cold weather and extreme temperatures.
Cold waves from the Canadian north are common during the winter, with the lack of natural barriers to the polar winds in the form of high mountain ranges. Many towns accumulate snow in moderate amounts during the winter and days are rarely above freezing in the majority of Iowa. Winter is an off-season due to the lack of mountain slopes and the soft nature of the snow, which is not useful for exciting adventure activities.


Spring weather in Iowa

Spring in Iowa is marked by temperate weather conditions. As the state transitions from cold winters, the warmer temperatures in spring are generally welcomed. This season, however, is also characterized by its fair share of rainfall. Thunderstorms are not uncommon during this time, with occasional tornadoes posing threats. Nevertheless, the mid-part of spring, especially around April, offers a suitable climate for visitors.


Summer weather in Iowa

Iowa's summer is characterized by heat and high humidity levels. Day temperatures can easily reach up to 100°F (37.8°C) in the peak of July. Nighttime offers some relief with temperatures settling between 60°F (15.6°C) to 65°F (18.3°C). The season is also marked by significant rainfall, with summer accounting for more than two-thirds of Iowa's annual precipitation. Prolonged summer rains sometimes result in flooding, especially when coupled with rapid snowmelt.


Autumn weather in Iowa

Autumn in Iowa is a spectacle, with the landscape transitioning to warm, earthy tones. Early autumn is particularly pleasant, with temperatures providing comfort compared to the preceding summer. However, as the season progresses, the weather becomes increasingly windy, leading to cooler temperatures. Despite this, the visual appeal of the landscape makes it an attractive season for many visitors.


Winter weather in Iowa

Winter in Iowa is defined by its cold temperatures and frequent snowfall. Daytime temperatures often remain below freezing, and on particularly cold days, the mercury can drop to as low as -20°F (-28.9°C). While snowfall is common, it tends to be distributed throughout the season, with the state averaging an accumulation of 30" (762mm) of snow. January stands out as the driest month, in contrast to the summer months which see the highest levels of precipitation.


Weather in January

January in Iowa is characterized by its frigid temperatures and frequent snowfall. As the heart of winter grips the state, daytime temperatures consistently remain below freezing. The mercury isn't uncommonly seen descending to extremes like -20°F (-28.9°C), especially in more inland areas away from rivers or lakes that might provide some temperate moderation. Weather in January »


Weather in February

February sees Iowa gradually transitioning from the deep chill of mid-winter, though the temperatures remain decidedly cold. Daytime temperatures in February, while still often below freezing, tend to be milder than the extreme lows of January. Weather in February »


Weather in March

March in Iowa is a month of transition, signaling the slow emergence from winter's grip and the onset of spring. Temperatures during this period start to climb, making daytime readings more temperate, often hovering between 40°F (4.4°C) and 50°F (10°C). Weather in March »


Weather in April

April in Iowa is when spring truly starts to manifest, with clear indications of warmer weather and revitalized nature. Temperatures during this month make a noticeable leap, frequently ranging from 55°F (12.8°C) to 65°F (18.3°C) during the day. Weather in April »


Weather in May

May is emblematic of the full bloom of spring in Iowa, with the state bathed in mild temperatures and an abundance of natural beauty. Daytime temperatures become increasingly pleasant, often ranging from 65°F (18.3°C) to 75°F (23.9°C). Weather in May »


Weather in June

June in Iowa is the herald of summer, characterized by a noticeable warmth and the commencement of a more humid climate. As the month progresses, temperatures comfortably settle between 75°F (23.9°C) and 85°F (29.4°C) during the daytime. Weather in June »


Weather in July

July is the zenith of summer in Iowa, where temperatures, humidity, and sunshine reach their peak. Daytime temperatures frequently find themselves in the 85°F (29.4°C) to 95°F (35°C) range, with occasional surges pushing them closer to the 100°F (37.8°C) mark. Weather in July »


Weather in August

August in Iowa serves as a gentle reminder that summer's reign is nearing its end, though the heat persists. Daytime temperatures typically hover between 80°F (26.7°C) and 90°F (32.2°C). The nights, while warm, bring a subtle hint of the approaching autumn, with temperatures ranging from 60°F (15.6°C) to 70°F (21.1°C). Rainfall in August, though less frequent than the earlier summer months, can still manifest in the form of sporadic thunderstorms. Weather in August »


Weather in September

September in Iowa marks the onset of autumn, a period synonymous with moderate temperatures, picturesque landscapes, and a decline in humidity levels. Daytime temperatures in September typically rest between 70°F (21.1°C) and 80°F (26.7°C), showcasing a marked decline from the summer peaks. Weather in September »


Weather in October

October in Iowa is emblematic of full-blown autumn, with its cooler temperatures, vibrant foliage, and crisp air. As the month unfolds, daytime temperatures usually oscillate between 60°F (15.6°C) and 70°F (21.1°C), while nights introduce a chillier ambiance, as temperatures dip to between 40°F (4.4°C) and 50°F (10°C). With the decline in temperatures comes a reduction in the frequency and intensity of rain showers. Weather in October »


Weather in November

November in Iowa acts as a harbinger of winter, with temperatures consistently dropping and the last remnants of autumn's hues fading. Daytime temperatures typically range between 40°F (4.4°C) and 50°F (10°C), signaling the need for warmer clothing. Weather in November »


Weather in December

December ushers in the heart of winter for Iowa, characterized by a distinct coldness and the landscape often blanketed in snow. Daytime temperatures during this month predominantly linger between 30°F (-1.1°C) and 40°F (4.4°C). Weather in December »

Updated: May 24, 2024
Published by: Weather Atlas | About Us
Data Sources |

Yearly & Monthly weather - Iowa, USA (2024)

FAQs

What is the weather like in Iowa all year round? ›

Climate in Iowa

Like most of the American Midwest, Iowa has a typical humid continental climate. This means hot summers and cold, snowy winters. Spring is a mixed bag of precipitation and temperatures, while fall is generally the nicest season of the year.

What is the least rainy month in Iowa? ›

The driest month in Des Moines is January with 1.03 inches of precipitation, and with 4.57 inches June is the wettest month.

What season is the best in Iowa? ›

What is the best time to visit Iowa? The fall season, i.e. the time from early September to late October, is the best time to visit Iowa. Everything, from the pleasant windy weather throughout the day to the economical accommodation prices, makes it the perfect season to explore this state.

Does Iowa get a lot of snow in the winter? ›

Climate of Iowa

Snowfall is light compared with the amount received in other states to the north and east. Snow cover seldom remains throughout the winter months; however, heavy snowfalls have occurred in Iowa in late autumn and early spring. Summers are warm and more humid.

Is Iowa a good place to live? ›

Iowa is an extremely safe place to live in the United States. It has low crime rates compared to the national average. Only 31% of people from Iowa report anxiety about their safety, which is fifteen percentage points lower than the average person.

What month is the coldest in Iowa? ›

During January, the coldest month, temperatures range from morning lows of 4°F and afternoon highs of 22°F in the northwest corner of Iowa up to lows of 15°F and highs of 32°F in the southeast.

Does Iowa get a lot of storms? ›

Severe thunderstorms visit Iowa frequently each year. On average, Iowa sees close to 50 tornadoes, tens of flash flood events, hundreds of severe thunderstorms and thousands of non-severe thunderstorms.

What is the warmest town in Iowa? ›

Iowa
  • Hottest city: Burlington.
  • Number of days per year w/ temperature above 90℉: 25.
  • Number of days per year w/ temperature above 100℉: 1.
  • Average summer maximum temperature: 85.2℉
  • Average summer minimum temperature: 65.0℉

Is Iowa dry or humid? ›

Most Humid States 2024
StateAverage Relative HumidityAverage Dew Point F
Iowa72.4%39.8
Michigan72.1%38
Indiana72%43
Maine71.7%34.4
46 more rows

What is the cost of living in Iowa? ›

The cost of living in Iowa is 5% lower than the national average. Housing is 17% lower than the national average, while utilities are 4% lower. When it comes to basic necessities such as food and clothing, groceries are around 3% lower than in the rest of the country, while clothing costs 3% lower.

Does Iowa get tornadoes? ›

With multiple severe weather outbreaks this spring, Iowa continues to run well above normal on tornadoes. A total of 72 twisters hit the state in all of 2023. This year, we're already at 85. On average, the state experiences around 50 tornadoes annually.

What is the state of Iowa known for? ›

Iowa ranks first in beef, pork, corn, soybean and grain production. One Iowa family farm grows enough food and fiber to feed 279 people. The world's first electronic digital computer was built and operated by researchers at Iowa State University in the 1930's.

How to survive Iowa winter? ›

If you are indoors
  1. Stay indoors and dress warmly.
  2. Conserve heat. Lower the thermostat to 65°F during the day and 55°F at night. ...
  3. If the pipes freeze, remove any insulation and wrap them in rags. ...
  4. Listen to the radio or TV for current information.

What is the snowiest town in Iowa? ›

As much snow as that sounds like, none of those cities even rank in the top ten snowiest cities in Iowa. In fact, Iowa's snowiest city, Clear Lake, gets 39.8 inches annually per winter. That is tops in the state.

What are three interesting facts about Iowa? ›

Our state is so much more dynamic than people give it credit for!
  • Iowa (possibly) means "beautiful." ...
  • Hogs outnumber people 4 to 1. ...
  • The Red Delicious apple originated in Peru, Iowa. ...
  • Iowa has one of the highest literacy rates in the country. ...
  • Elk Horn is the largest Danish rural settlement in the United States.
Jul 3, 2023

Does Iowa have all four seasons? ›

The climate in Iowa has four seasons — winter, spring, summer and fall. Within each season, however, temperatures and precipitation (rain, snowfall, hail or sleet) can vary significantly from day to day.

How is the cost of living in Iowa? ›

Note that the cost of living index below 100 means the area is more affordable than the U.S. average. The annual expenses for a single person living in Iowa are $43,542 or $3,629 monthly, while families with children can expect around $88,966 yearly costs or $7,412 monthly.

How long does winter last in Iowa? ›

Winter in Iowa typically lasts from December to February, with temperatures averaging between 20-30°F. But as the days get longer and the sun shines brighter, Iowans can look forward to the end of winter and the start of spring.

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