January weather forecast
Chester, SD

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Weather in January

January, like December, is another subzero cold winter month in Chester, South Dakota, with temperature in the range of an average low of 8.2°F (-13.2°C) and an average high of 22.3°F (-5.4°C).

Temperature

Temperature readings reach their annual highs in January, averaging 22.3°F (-5.4°C) and a minimum average of 8.2°F (-13.2°C).

Humidity

With an average relative humidity of 89%, January is the most humid month in Chester, South Dakota.

Rainfall

January is the month with the least rainfall. Rain falls for 3.3 days and accumulates 0.63" (16mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Chester, during January, snow falls for 10.1 days and regularly aggregates up to 3.58" (91mm) of snow. Throughout the year, there are 45.6 snowfall days, and 19.49" (495mm) of snow is accumulated.

Daylight

In Chester, the average length of the day in January is 9h and 21min.
On the first day of January in Chester, sunrise is at 8:01 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 5:36 pm CST.

Sunshine

With an average of 4h of sunshine, January has the least sunshine of the year in Chester.

UV index

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Chester. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 1 in January translates into these instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

What month is the coldest in Chester?

January, with its average high-temperature of 22.3°F (-5.4°C) and an average low-temperature of 8.2°F (-13.2°C), holds the record as the coldest month in Chester.

How cold is it in Chester in January?

The average high-temperature, in January, in Chester, is 22.3°F (-5.4°C), while the average low-temperature is 8.2°F (-13.2°C).

What is the most humid month in Chester?

The most humid month in Chester is January, with an average relative humidity of 89%.

What is the average humidity in January in Chester?

In Chester, South Dakota, the average relative humidity in January is 89%.

What is the driest month in Chester?

The month with the least rainfall in Chester is January, when the rain falls for 3.3 days and typically collects 0.63" (16mm) of precipitation.

How many days does it rain in January in Chester?

In January, the rain falls for 3.3 days. Throughout January, 0.63" (16mm) of precipitation is accumulated.

How many days does it snow in January in Chester?

In January, it is snowing for 10.1 days. Throughout January, 3.58" (91mm) of snow is accumulated.

How many hours of daylight does Chester have in January?

In Chester, the average day length in January is 9h and 21min.

What time are sunrise and sunset in January in Chester?

In January, on the first day of the month, sunrise is at 8:01 am and sunset at 5:00 pm. On the last day of the month, in Chester, sunrise is at 7:45 am and sunset at 5:36 pm CST.

What is the month with the least sunshine in Chester?

January has the least sunshine of the year in Chester, with an average of 4h of sunshine.

How many hours of sunshine does Chester have in January?

The average sunshine duration in January is 4h.

When is the lowest UV index in Chester?

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

How high is the UV index in January in Chester?

In January, the average daily maximum UV index in Chester, South Dakota, is 1. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
26.4°F -3.1°C
22.3°F -5.4°C
25.9°F -3.4°C
Average low temperature
14.9°F -9.5°C
8.2°F -13.2°C
11.8°F -11.2°C
Average pressure
30.13" 765mmHg
30.16" 766mmHg
30.16" 766mmHg
Average wind speed
10.3mph 16.6km/h
10.6mph 17.1km/h
10.6mph 17.1km/h
Average max. wind speed
11mph 17.7km/h
11.2mph 18km/h
11.2mph 18km/h
Average wind speed gusts
16.9mph 27.2km/h
17.6mph 28.3km/h
16.9mph 27.2km/h
Average humidity
85%
89%
85%
Average rainfall
1.02" 26mm
0.63" 16mm
0.71" 18mm
Average rainfall days
3.5
3.3
2.8
Average snowfall
4.17" 106mm
3.58" 91mm
4.29" 109mm
Average snowfall days
10.3
10.1
8.2
Average daylight
9h 0min
9h 2min
10h 3min
Average sunshine
4h 2min
4h 0min
5h 0min
Average sunshine days
18.7
19.6
17.8
Average UV index
1
1
2
Average cloud cover
54%
57%
54%
Average visibility
6mi 9.7km
5mi 8km
6mi 9.7km

Average temperature in January
Chester, SD

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

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (22.3°F).

  • Average low temperature in January: 8.2°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).

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Average pressure in January
Chester, SD

Average pressure in January - Chester, 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 (29.86"Hg).

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Average wind speed in January
Chester, SD

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

The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is July (8.2mph).

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Average humidity in January
Chester, SD

Average humidity in January - Chester, SD
  • Average humidity in January: 89%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).

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Average rainfall in January
Chester, SD

Average rainfall in January - Chester, SD
  • Average rainfall in January: 0.63"

The wettest month (with the highest rainfall) is June (3.27").
The driest month (with the least rainfall) is January (0.63").

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Average rainfall days in January
Chester, SD

Average rainfall days in January - Chester, SD
  • Average rainfall days in January: 3.3 days

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.8 days).

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Average snowfall in January
Chester, SD

Average snowfall in January - Chester, SD
  • Average snowfall in January: 3.58"

The month with the highest snowfall is February (4.29").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Chester, SD

Average snowfall days in January - Chester, SD
  • Average snowfall days in January: 10.1 days

The month with the highest number of snowfall days is December (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Chester, 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: 4h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in January
Chester, SD

Average sunshine days in January - Chester, SD
  • Average sunshine days in January: 19.6 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is June (10.6 days).

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Average UV index in January
Chester, SD

Average UV index in January - Chester, 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).

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Average cloud cover in January
Chester, SD

Average cloud cover in January - Chester, SD
  • Average cloud cover in January: 57

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in January
Chester, SD

Average visibility in January - Chester, 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).

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Chester, South Dakota, USA

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