Monthly weather forecast and climate
Des Moines, IA

A close view of city buildings in Des Moines, Iowa
A close view of city buildings in Des Moines, Iowa
January, the same as December, in Des Moines, Iowa, is a freezing cold winter month, with average temperature fluctuating between 15.1°F (-9.4°C) and 28.2°F (-2.1°C). The coldest month is January, with an average high-temperature of 28.2°F (-2.1°C) and an average low-temperature of 15.1°F (-9.4°C). Weather in January »

The last month of the winter, February, is a wintry month in Des Moines, Iowa, with average temperature fluctuating between 32.4°F (0.2°C) and 18°F (-7.8°C). In Des Moines, the average high-temperature is practically the same as in January - a cold 32.4°F (0.2°C). Weather in February »

The first month of the spring, March, is a chilly month in Des Moines, Iowa, with average temperature ranging between min 32.2°F (0.1°C) and max 47.5°F (8.6°C). In Des Moines, Iowa, the average high-temperature significantly increases, from a cold 32.4°F (0.2°C) in February, to a chilly 47.5°F (8.6°C). Weather in March »

April is a mild spring month in Des Moines, Iowa, with average temperature varying between 59.7°F (15.4°C) and 42.4°F (5.8°C). In Des Moines, the average high-temperature in April increases, from a frosty 47.5°F (8.6°C) in March, to a moderate 59.7°F (15.4°C). Weather in April »

May, the last month of the spring, in Des Moines, is an agreeable month, with average temperature varying between 53.1°F (11.7°C) and 69.6°F (20.9°C). In May, the average high-temperature increases, from a moderate 59.7°F (15.4°C) in April, to an agreeable 69.6°F (20.9°C). Weather in May »

The first month of the summer, June, is a warm month in Des Moines, Iowa, with average temperature varying between 62.8°F (17.1°C) and 79.5°F (26.4°C). In Des Moines, the average high-temperature increases, from a pleasant 69.6°F (20.9°C) in May, to a warm 79.5°F (26.4°C). Weather in June »

July, like June, in Des Moines, Iowa, is another warm summer month, with average temperature fluctuating between 65.5°F (18.6°C) and 83.1°F (28.4°C). July is the warmest month, with an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 65.5°F (18.6°C). The average heat index in July is estimated at a hot 91.9°F (33.3°C). Weather in July »

The last month of the summer, August, is another warm month in Des Moines, Iowa, with temperature in the range of an average high of 81.7°F (27.6°C) and an average low of 62.6°F (17°C). In Des Moines, the average high-temperature is essentially the same as in July - a still moderately hot 81.7°F (27.6°C). Weather in August »

The first month of the autumn, September, is also a moderately hot month in Des Moines, Iowa, with average temperature fluctuating between 75.6°F (24.2°C) and 55.9°F (13.3°C). In Des Moines, the average high-temperature slightly decreases, from 81.7°F (27.6°C) in August, to a still moderately hot 75.6°F (24.2°C). Weather in September »

October, like September, is another mild autumn month in Des Moines, Iowa, with average temperature varying between 45°F (7.2°C) and 60.6°F (15.9°C). In October, the average high-temperature significantly decreases, from a moderately hot 75.6°F (24.2°C) in September, to a mild 60.6°F (15.9°C). Weather in October »

The last month of the autumn, November, is also a frosty month in Des Moines, Iowa, with average temperature fluctuating between 47.1°F (8.4°C) and 32.7°F (0.4°C). In Des Moines, Iowa, the average high-temperature in November decreases, from a mild 60.6°F (15.9°C) in October, to a chilly 47.1°F (8.4°C). Weather in November »

The first month of the winter, December, is also a wintry month in Des Moines, Iowa, with average temperature fluctuating between 34.2°F (1.2°C) and 22.5°F (-5.3°C). In December, the average high-temperature decreases, from a chilly 47.1°F (8.4°C) in November, to a cold 34.2°F (1.2°C). Weather in December »

What is the coldest month in Des Moines?

January is the coldest month, with an average high-temperature of 28.2°F (-2.1°C) and an average low-temperature of 15.1°F (-9.4°C).

What are the most humid months in Des Moines?

Months with the highest humidity in Des Moines are January and June, with an average relative humidity of 82%.

How many days does it rain in Des Moines?

In Des Moines, Iowa, during the entire year, the rain falls for 114.4 days and collects up to 16.38" (416mm) of precipitation.

What is the driest month in Des Moines?

The month with the least rainfall in Des Moines, Iowa, is January when the rain falls for 4 days and typically collects 0.47" (12mm) of precipitation.

When does it snow in Des Moines?

Months with snowfall are January through May, October through December.

How many days does it snow in Des Moines?

Throughout the year, in Des Moines, Iowa, there are 30.9 snowfall days, and 7.36" (187mm) of snow is accumulated.

What is the snowiest month in Des Moines?

January is the month with the most snowfall in Des Moines, Iowa. Snow falls for 8.7 days and accumulates 2.24" (57mm) of snow.

What is the month with the least sunshine in Des Moines?

The month with the least sunshine in Des Moines is January, with an average of 4.3h of sunshine.

When is the lowest UV index in Des Moines?

With an average maximum UV index of 1, January is the month with the lowest UV index.

What is the rainiest month in Des Moines?

May is the month with the most rainfall. Rain falls for 15.3 days and accumulates 2.76" (70mm) of precipitation.

When it does not snow in Des Moines?

In Des Moines snow does not fall in June through September.

When are the longest days in Des Moines?

With an average of 15.2h of daylight, June has the longest days of the year.

When is the highest UV index in Des Moines?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the warmest month in Des Moines?

With an average high-temperature of 83.1°F (28.4°C) and an average low-temperature of 65.5°F (18.6°C), July is the warmest month in Des Moines, Iowa.

What month has the most sunshine in Des Moines?

With an average of 10.3h of sunshine, July has the most sunshine of the year in Des Moines, Iowa.

What is the least humid month in Des Moines?

The least humid month in Des Moines, Iowa, is October, with an average relative humidity of 70%.

What is the month with the shortest days in Des Moines?

December has the shortest days of the year, with an average of 9.2h of daylight.
Average temperature - Des Moines, IA
Average pressure - Des Moines, IA

The month with the highest atmospheric pressure is January (1021.3mbar).
The month with the lowest atmospheric pressure is June (1012mbar).

Average wind speed - Des Moines, IA

The windiest month (with the highest average wind speed) is April (16.6km/h).
The calmest months (with the lowest average wind speed) are July and August (11.2km/h).

Average humidity - Des Moines, IA
Average rainfall - Des Moines, IA
Average rainfall days - Des Moines, IA
Average snowfall - Des Moines, IA
Average snowfall days - Des Moines, IA

The month with the highest number of snowfall days is January (8.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Des Moines, IA

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

The month with the most sunshine is July (Average sunshine: 10.3h).
The month with the least sunshine is January (Average sunshine: 4.3h).

Average sunshine days - Des Moines, IA

The month with the most sunshine days is December (22.3 days).
The month with the least sunshine days is June (12.2 days).

Average visibility - Des Moines, IA

The month with the highest visibility is November (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).