Des Moines
Iowa, USA
Long-term weather forecast
Long-term weather forecast

January 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, like December, is another subzero cold winter month in Des Moines, Iowa, with average temperature ranging between min 14.4°F (-9.8°C) and max 30.9°F (-0.6°C).

Temperature

With an average high-temperature of 30.9°F (-0.6°C) and an average low-temperature of 14.4°F (-9.8°C), January is the coldest month.

Humidity

The average relative humidity in Des Moines is 71%.

Rainfall

January is the month with the least rainfall in Des Moines. Rain falls for 7.5 days and accumulates 1" (25.4mm) of precipitation.

Snowfall

Months with snowfall in Des Moines are January through April, October through December. In Des Moines, snow falls for 6.5 days, with typically accumulated 8.5" (215.9mm) of snow. In Des Moines, Iowa, during the entire year, snow falls for 24.8 days, and aggregates up to 35.3" (896.7mm) of snow.

Daylight

In January, the average length of the day is 9.6h.

Sunshine

The average sunshine in Des Moines is 5.1h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from the exposure to the Sun's UV rays for average individuals.
Note: In January, the average maximum UV index of 1 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Des Moines?

With an average high-temperature of 30.9°F (-0.6°C) and an average low-temperature of 14.4°F (-9.8°C), January is the coldest month.

What is the temperature in January in Des Moines?

In January, in Des Moines, the average high-temperature is 30.9°F (-0.6°C), and the average low-temperature is 14.4°F (-9.8°C).

What is the average humidity in January in Des Moines?

The average relative humidity in January is 71%.

How much does it rain in Des Moines in January?

In Des Moines, in January, during 7.5 rainfall days, 1" (25.4mm) of precipitation is typically accumulated.

What is the driest month in Des Moines?

The month with the least rainfall in Des Moines is January when the rain falls for 7.5 days and typically collects 1" (25.4mm) of precipitation.

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

In Des Moines, Iowa, during January, snow falls for 6.5 days and regularly aggregates up to 8.5" (215.9mm) of snow.

What is the average length of the day in January in Des Moines?

In Des Moines, Iowa, the average length of the day in January is 9.6h.

How many hours of sunshine does Des Moines have in January?

In January, the average sunshine in Des Moines, Iowa, is 5.1h.

What are the months with the lowest UV index in Des Moines?

Months with the lowest UV index are January and December, with an average maximum UV index of 1.

How high is the UV index in January in Des Moines?

The average daily maximum UV index in January is 1. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to the Sun's UV rays.
Average temperature in January - Des Moines, IA
  • Average high temperature in January: -0.6°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 January: -9.8°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 January - Des Moines, IA
  • Average humidity in January: 71%

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

Average rainfall in January - Des Moines, IA
  • Average rainfall in January: 25.4mm

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 January - Des Moines, IA
  • Average rainfall days in January: 7.5 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 January - Des Moines, IA
  • Average snowfall in January: 215.9mm

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 January - Des Moines, IA
  • Average snowfall days in January: 6.5 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 January / Average sunshine in January - Des Moines, IA
  • Average daylight in January: 9.6h

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 January: 5.1h

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 January - Des Moines, IA
  • Average UV index in January: 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).