January weather forecast and climate
Des Moines, IA

City buildings in Des Moines, Iowa
City buildings in Des Moines, Iowa
January, the same as December, in Des Moines, Iowa, is a freezing cold winter month, with average temperature ranging between max 28.2°F (-2.1°C) and min 15.1°F (-9.4°C).

Temperature

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

Humidity

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

Rainfall

January is the month with the least rainfall. Rain falls for 4 days and accumulates 0.47" (12mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. The month with the most snowfall in Des Moines is January when snow falls for 8.7 days and typically aggregates up to 2.24" (57mm) of snow.

Daylight

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

Sunshine

January has the least sunshine of the year, with an average of 4.3h of sunshine.

UV index

The month with the lowest UV index is January, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 1 interpret into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 28.2°F (-2.1°C) and an average low-temperature of 15.1°F (-9.4°C), January is the coldest month in Des Moines, Iowa.

What is the temperature in January in Des Moines?

In January, in Des Moines, the average high-temperature is 28.2°F (-2.1°C), and the average low-temperature is 15.1°F (-9.4°C).

What are the most humid months in Des Moines?

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

What is the average humidity in January in Des Moines?

The average relative humidity in January in Des Moines is 82%.

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

In Des Moines, Iowa, in January, during 4 rainfall days, 0.47" (12mm) of precipitation is typically accumulated.

What is the driest month in Des Moines?

January is the month with the least rainfall in Des Moines, Iowa. Rain falls for 4 days and accumulates 0.47" (12mm) of precipitation.

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

In January, in Des Moines, it is snowing for 8.7 days. Throughout January, 2.24" (57mm) of snow is accumulated.

When does it snow the most in Des Moines?

January is the month with the most snowfall. Snow falls for 8.7 days and accumulates 2.24" (57mm) 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.

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

January has the least sunshine of the year in Des Moines, Iowa, with an average of 4.3h of sunshine.

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

In Des Moines, the average sunshine in January is 4.3h.

When is the lowest UV index in Des Moines?

The month with the lowest UV index in Des Moines is January, with an average maximum UV index of 1.

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

In January, the average daily maximum UV index in Des Moines, Iowa, is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in January - Des Moines, IA
  • Average high temperature in January: 28.2°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (28.2°F).

  • Average low temperature in January: 15.1°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

Average pressure in January - Des Moines, IA
  • Average pressure in January: 30.16"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.88").

Average wind speed in January - Des Moines, IA
  • Average wind speed in January: 10.3mph

The windiest months (with the highest average wind speed) are January, February, March and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

Average humidity in January - Des Moines, IA
  • Average humidity in January: 82%

Months with the highest relative humidity are January and June (82%).
The month with the lowest relative humidity is October (70%).

Average rainfall in January - Des Moines, IA
  • Average rainfall in January: 0.47"

The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in January - Des Moines, IA
  • Average rainfall days in January: 4 days

The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (3 days).

Average snowfall in January - Des Moines, IA
  • Average snowfall in January: 2.24"

The month with the highest snowfall is January (2.24").
Months with the least snowfall are June, July, August and September (0").

Average snowfall days in January - Des Moines, IA
  • Average snowfall days in January: 8.7 days

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 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 the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in January: 4.3h

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 in January - Des Moines, IA
  • Average sunshine days in January: 20.3 days

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

Months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in January - Des Moines, IA
  • Average cloud cover in January: 54

The month with the most cloud cover is January (Cloud cover 54).
Months with the least cloud cover are July and September (Cloud cover 29).

Average visibility in January - Des Moines, IA
  • Average visibility in January: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).