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, the same as December, in Des Moines, Iowa, is another subzero cold winter month, 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

In Des Moines, Iowa, the average relative humidity in January 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 are January through April, October through December.

Daylight

The average length of the day in Des Moines is 9.6h.

Sunshine

In January, the average sunshine is 5.1h.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Des Moines. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Des Moines?

The coldest month in Des Moines, Iowa, is January, with an average high-temperature of 30.9°F (-0.6°C) and an average low-temperature of 14.4°F (-9.8°C).

What is the temperature in January in Des Moines?

The average high-temperature, in January, in Des Moines, is 30.9°F (-0.6°C), while 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, during January, the rain falls for 7.5 days and regularly aggregates up to 1" (25.4mm) of precipitation.

What is the driest month in Des Moines?

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

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

In Des Moines, in January, during 6.5 snowfall days, 8.5" (215.9mm) of snow is typically accumulated.

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

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

How long on average sun shines in January in Des Moines?

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

What is the month 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.

What is the UV index reading in January in Des Moines?

In Des Moines, Iowa, the average daily maximum UV index in January is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to the UV radiation.
Average temperature in January - Des Moines, IA
  • Average high temperature in January: 31°F

The warmest month (with the highest average high temperature) is July (85.7°F).
The month with the lowest average high temperature is January (31°F).

  • Average low temperature in January: 14.3°F

The month with the highest average low temperature is July (66.8°F).
The coldest month (with the lowest average low temperature) is January (14.3°F).

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: 1"

The wettest month (with the highest rainfall) is June (4.9").
The driest month (with the lowest rainfall) is January (1").

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: 8.5"

The month with the highest snowfall is December (9").
Months with the lowest snowfall are May, June, July, August and September (0").

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).