January weather forecast
Irene, SD

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Weather in January

January, the same as December, in Irene, South Dakota, is a freezing cold winter month, with an average temperature fluctuating between 26.8°F (-2.9°C) and 12.9°F (-10.6°C).

Temperature

January stands out as Irene's coldest month, with temperatures ranging between an average high of 26.8°F (-2.9°C) and a low of 12.9°F (-10.6°C).

Humidity

January is the most humid month in Irene, South Dakota, with an average relative humidity of 85%.

Rainfall

In January, in Irene, the rain falls for 3.4 days. Throughout January, 0.67" (17mm) of precipitation is accumulated. Throughout the year, there are 117.9 rainfall days, and 21.93" (557mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Irene, during January, snow falls for 9.7 days and regularly aggregates up to 2.6" (66mm) of snow. Throughout the year, in Irene, there are 37.4 snowfall days, and 14.45" (367mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 26min.
On the first day of January, sunrise is at 8:00 am and sunset at 5:04 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:39 pm CST.

Sunshine

The month with the least sunshine in Irene is January, with an average of 4.4h of sunshine.

UV index

With an average maximum UV index of 1, January is the month with the lowest UV index in Irene. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average maximum UV index of 1 in January leads to these recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month in Irene?

January is Irene's coldest month, registering average high temperatures of 26.8°F (-2.9°C) and lows of 12.9°F (-10.6°C).

How cold is January in Irene?

The average high-temperature, in January, in Irene, is 26.8°F (-2.9°C), while the average low-temperature is 12.9°F (-10.6°C).

What is the most humid month in Irene?

The most humid month in Irene, South Dakota, is January, with an average relative humidity of 85%.

What is the average humidity in January in Irene?

In Irene, the average relative humidity in January is 85%.

How many days does it rain in January in Irene?

In Irene, in January, it is raining for 3.4 days, with typically 0.67" (17mm) of accumulated precipitation.

How many days does it snow in January in Irene?

In January, in Irene, it is snowing for 9.7 days. Throughout January, 2.6" (66mm) of snow is accumulated.

How many hours of daylight does Irene have in January?

The average day length in January in Irene is 9h and 26min.

When is the sunrise / sunset in January in Irene?

In January, on the first day of the month, sunrise is at 8:00 am and sunset at 5:04 pm. On the last day of the month, in Irene, South Dakota, sunrise is at 7:44 am and sunset at 5:39 pm CST.

What is the month with the least sunshine in Irene?

The month with the least sunshine is January, with an average of 4.4h of sunshine.

How long on average sun shines in January in Irene?

The average sunshine duration in January in Irene, South Dakota, is 4.4h.

When is the lowest UV index in Irene?

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

How high is the UV index in January in Irene?

In January, the average daily maximum UV index in Irene, South Dakota, is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Irene, SD

Average temperature in January - Irene, SD
  • Average high temperature in January: 26.8°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in January: 12.9°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).

Average pressure in January
Irene, SD

Average pressure in January - Irene, SD
  • Average pressure in January: 30.16"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in January
Irene, SD

Average wind speed in January - Irene, SD
  • Average wind speed in January: 10.6mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).

Average humidity in January
Irene, SD

Average humidity in January - Irene, SD
  • Average humidity in January: 85%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (64%).

Average rainfall in January
Irene, SD

Average rainfall in January - Irene, SD
  • Average rainfall in January: 0.67"

The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (0.59").

Average rainfall days in January
Irene, SD

Average rainfall days in January - Irene, SD
  • Average rainfall days in January: 3.4 days

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.3 days).

Average snowfall in January
Irene, SD

Average snowfall in January - Irene, SD
  • Average snowfall in January: 2.6"

The month with the highest snowfall is December (2.95").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Irene, SD

Average snowfall days in January - Irene, SD
  • Average snowfall days in January: 9.7 days

The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Irene, SD

Average daylight in January / Average sunshine in January - Irene, SD
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in January: 4h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in January
Irene, SD

Average sunshine days in January - Irene, SD
  • Average sunshine days in January: 19.3 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (9.3 days).

Average UV index in January
Irene, SD

Average UV index in January - Irene, SD
  • Average UV index in January: 1

The 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
Irene, SD

Average cloud cover in January - Irene, SD
  • Average cloud cover in January: 52

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 25).

Average visibility in January
Irene, SD

Average visibility in January - Irene, SD
  • Average visibility in January: 6mi

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

Irene, South Dakota, USA

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