December weather forecast and climate
Des Moines, IA

A close view of city buildings in Des Moines, Iowa, USA
A close view of city buildings in Des Moines, Iowa, USA

What is the temperature in December in Des Moines?

In December, the average high-temperature is 34°F (1.1°C), and the average low-temperature is 18°F (-7.8°C).

How much does it rain in Des Moines in December?

In December, in Des Moines, Iowa, the rain falls for 8.4 days. Throughout December, 1.4" (36.1mm) of precipitation is accumulated.

How many days does it snow in December in Des Moines?

In Des Moines, Iowa, in December, during 6.2 snowfall days, typically, 9" (228.6mm) of snow is accumulated.

What is the snowiest month in Des Moines?

December is the month with the most snowfall. Snow falls for 6.2 days and accumulates 9" (228.6mm) of snow.
Average temperature in December - Des Moines, IA
  • Average high temperature in December: 1.1°C

The warmest month (with the highest average high temperature) is July (29.8°C).
The month with the lowest average high temperature is January (-0.6°C).

  • Average low temperature in December: -7.8°C

The month with the highest average low temperature is July (19.3°C).
The coldest month (with the lowest average low temperature) is January (-9.8°C).

Average humidity in December - Des Moines, IA
  • Average humidity in December: 74.6%

The month with the highest relative humidity is December (74.6%).
The month with the lowest relative humidity is May (63%).

Average rainfall in December - Des Moines, IA
  • Average rainfall in December: 36.1mm

The wettest month (with the highest rainfall) is June (125.5mm).
The driest month (with the lowest rainfall) is January (25.4mm).

Average rainfall days in December - Des Moines, IA
  • Average rainfall days in December: 8.4 days

The month with the highest number of rainy days is May (12.5 days).
The month with the lowest number of rainy days is January (7.5 days).

Average snowfall in December - Des Moines, IA
  • Average snowfall in December: 228.6mm

The month with the highest snowfall is December (228.6mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

Average snowfall days in December - Des Moines, IA
  • Average snowfall days in December: 6.2 days

The month with the highest number of snowfall days is January (6.5 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Des Moines, IA
  • Average daylight in December: 9.2h

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

  • Average sunshine in December: 4.2h

The month with most sunshine is July (Average sunshine: 10.9h).
The month with least sunshine is December (Average sunshine: 4.2h).

Average UV index in December - Des Moines, IA
  • Average UV index in December: 1

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January and December (UV index 1).

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