January weather forecast
Madison, SD

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Weather in January

With the commencement of the year in Madison, South Dakota, a sharp coolness defines the month. The average high temperature hovers around a chilly 22.3°F (-5.4°C). The aftermath of the holiday season sees a high frequency of snow with snowfall occurring on 11.3 days. Though the number of daylight hours is low, frosty mornings provide a stunning vista against January's regular backdrop of snow. January's days and nights, defined by cold temperatures signify Madison's typical winter.

Temperature

January, recording an average high temperature of 22.3°F (-5.4°C) and a low temperature of 8.1°F (-13.3°C), is Madison's coldest month.

Humidity

The most humid month is January, with an average relative humidity of 90%.

Rainfall

In January, the rain falls for 1.6 days. Throughout January, 0.67" (17mm) of precipitation is accumulated. Throughout the year, there are 111.2 rainfall days, and 21.14" (537mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In January, it is snowing for 11.3 days. Throughout January, 3.46" (88mm) of snow is accumulated. In Madison, during the entire year, snow falls for 49.4 days and aggregates up to 20.04" (509mm) of snow.

Daylight

In Madison, the average length of the day in January is 9h and 20min.
On the first day of the month, sunrise is at 8:03 am and sunset at 5:00 pm. On the last day of January, sunrise is at 7:46 am and sunset at 5:36 pm CST.

Sunshine

January has the least sunshine of the year, with an average of 3.8h of sunshine.

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 vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 1 during January leads to these instructions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. It's recommended to limit sun exposure when its radiation is at its peak during midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

January is the month that records the lowest temperatures, with averages ranging from a high of 22.3°F (-5.4°C) to a low of 8.1°F (-13.3°C).

How cold is January in Madison?

In Madison, 22.3°F (-5.4°C) is the average high-temperature and 8.1°F (-13.3°C) is the average low-temperature during January.

What is the most humid month?

With an average relative humidity of 90%, January is the most humid month.

What is the average humidity in January?

In January, the average relative humidity is 90%.

How many days does it rain in January?

In January, the rain falls for 1.6 days. Throughout January, 0.67" (17mm) of precipitation is accumulated.

How much does it snow in January?

In Madison, in January, snow falls for 11.3 days, with typically accumulated 3.46" (88mm) of snow.

How many hours of daylight does Madison have in January?

In Madison, South Dakota, the average day length in January is 9h and 20min.

When are sunrise and sunset in January?

On the first day of January, sunrise is at 8:03 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:36 pm CST.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3.8h of sunshine.

How many hours of sunshine does Madison have in January?

In Madison, the average sunshine duration in January is 3.8h.

What are the months with the lowest UV index?

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

What is the UV index intensity in January?

In Madison, the average daily maximum UV index in January is 1. A UV Index of 2, and less, symbolizes a low health risk 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
Madison, SD

Average temperature in January - Madison, SD
  • Average high temperature in January: 22.3°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (22.3°F).

  • Average low temperature in January: 8.1°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).

Average pressure in January
Madison, SD

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

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

Average wind speed in January
Madison, SD

Average wind speed in January - Madison, SD
  • Average wind speed in January: 10.8mph

The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest months (with the lowest average wind speed) are July and August (8.6mph).

Average humidity in January
Madison, SD

Average humidity in January - Madison, SD
  • Average humidity in January: 90%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (67%).

Average rainfall in January
Madison, SD

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

The wettest month (with the highest rainfall) is June (3.23").
The driest month (with the least rainfall) is November (0.59").

Average rainfall days in January
Madison, SD

Average rainfall days in January - Madison, SD
  • Average rainfall days in January: 1.6 days

The month with the highest number of rainy days is June (18.7 days).
The month with the least rainy days is January (1.6 days).

Average snowfall in January
Madison, SD

Average snowfall in January - Madison, SD
  • Average snowfall in January: 3.46"

The month with the highest snowfall is February (4.76").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Madison, SD

Average snowfall days in January - Madison, SD
  • Average snowfall days in January: 11.3 days

The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in January: 3h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in January
Madison, SD

Average sunshine days in January - Madison, SD
  • Average sunshine days in January: 19.4 days

The month with the most sunshine days is November (22.4 days).
The month with the least sunshine days is June (9.5 days).

Average UV index in January
Madison, SD

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

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in January
Madison, SD

Average cloud cover in January - Madison, SD
  • Average cloud cover in January: 60

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in January
Madison, SD

Average visibility in January - Madison, SD
  • Average visibility in January: 5mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Madison, South Dakota, USA

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