January weather forecast
Saint Charles, SD

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Weather in January

January, the same as December, in Saint Charles, South Dakota, is a freezing cold winter month, with an average temperature varying between 17.2°F (-8.2°C) and 29.7°F (-1.3°C).

Temperature

In Saint Charles, South Dakota, the month of January registers the lowest temperatures, averaging 29.7°F (-1.3°C) at the peak and 17.2°F (-8.2°C) at the lowest.

Humidity

With an average relative humidity of 81%, January is the most humid month.

Rainfall

The month with the least rainfall in Saint Charles, South Dakota, is January, when the rain falls for 1.6 days and typically collects 0.43" (11mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Saint Charles, South Dakota, in January, during 6.1 snowfall days, 2.05" (52mm) of snow is typically accumulated. In Saint Charles, during the entire year, snow falls for 33.1 days and aggregates up to 14.29" (363mm) of snow.

Daylight

In January, the average length of the day is 9h and 26min.
On the first day of the month, sunrise is at 8:07 am and sunset at 5:11 pm. On the last day of January, sunrise is at 7:52 am and sunset at 5:46 pm CST.

Sunshine

With an average of 4.9h of sunshine, January has the least sunshine of the year in Saint Charles.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 in January interprets into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What is the coldest month in Saint Charles?

Saint Charles's January weather reaches an average high of 29.7°F (-1.3°C) and an average low of 17.2°F (-8.2°C), making it the coldest month.

How cold is January in Saint Charles?

In January, in Saint Charles, the average high-temperature is 29.7°F (-1.3°C), and the average low-temperature is 17.2°F (-8.2°C).

What is the most humid month in Saint Charles?

The most humid month is January, with an average relative humidity of 81%.

What is the average humidity in January in Saint Charles?

The average relative humidity in January in Saint Charles is 81%.

What is the driest month in Saint Charles?

January is the month with the least rainfall in Saint Charles. Rain falls for 1.6 days and accumulates 0.43" (11mm) of precipitation.

How much does it rain in Saint Charles in January?

In January, the rain falls for 1.6 days. Throughout January, 0.43" (11mm) of precipitation is accumulated.

How much does it snow in Saint Charles in January?

In Saint Charles, in January, snow falls for 6.1 days, with typically accumulated 2.05" (52mm) of snow.

What is the average length of the day in January in Saint Charles?

The average day length in January in Saint Charles, South Dakota, is 9h and 26min.

When is the sunrise / sunset in January in Saint Charles?

In January, on the first day of the month, sunrise is at 8:07 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 5:46 pm CST.

What is the month with the least sunshine in Saint Charles?

The month with the least sunshine in Saint Charles, South Dakota, is January, with an average of 4.9h of sunshine.

How long on average sun shines in January in Saint Charles?

The average sunshine duration in January in Saint Charles, South Dakota, is 4.9h.

What is the month with the lowest UV index in Saint Charles?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

What is the UV index intensity in January in Saint Charles?

In Saint Charles, South Dakota, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
31.5°F -0.3°C
29.7°F -1.3°C
33.1°F 0.6°C
Average low temperature
20.7°F -6.3°C
17.2°F -8.2°C
19.4°F -7°C
Average pressure
30.14" 766mmHg
30.16" 766mmHg
30.14" 766mmHg
Average wind speed
11.6mph 18.7km/h
11.7mph 18.8km/h
11.4mph 18.3km/h
Average max. wind speed
12.4mph 20km/h
12.5mph 20.1km/h
12.2mph 19.6km/h
Average wind speed gusts
19.1mph 30.7km/h
19.5mph 31.4km/h
18mph 29km/h
Average humidity
78%
81%
75%
Average rainfall
0.98" 25mm
0.43" 11mm
0.51" 13mm
Average rainfall days
2
1.6
2.1
Average snowfall
3.66" 93mm
2.05" 52mm
2.6" 66mm
Average snowfall days
5.8
6.1
7.8
Average daylight
9h 1min
9h 2min
10h 4min
Average sunshine
5h 1min
4h 5min
5h 5min
Average sunshine days
22.1
22.4
17.8
Average UV index
2
2
2
Average cloud cover
44%
49%
48%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in January
Saint Charles, SD

Average temperature in January - Saint Charles, SD
  • Average high temperature in January: 29.7°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (29.7°F).

  • Average low temperature in January: 17.2°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).

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Average pressure in January
Saint Charles, SD

Average pressure in January - Saint Charles, 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).

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Average wind speed in January
Saint Charles, SD

Average wind speed in January - Saint Charles, SD
  • Average wind speed in January: 11.7mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is July (9.3mph).

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Average humidity in January
Saint Charles, SD

Average humidity in January - Saint Charles, SD
  • Average humidity in January: 81%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is October (61%).

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Average rainfall in January
Saint Charles, SD

Average rainfall in January - Saint Charles, SD
  • Average rainfall in January: 0.43"

The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in January
Saint Charles, SD

Average rainfall days in January - Saint Charles, SD
  • Average rainfall days in January: 1.6 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (1.6 days).

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Average snowfall in January
Saint Charles, SD

Average snowfall in January - Saint Charles, SD
  • Average snowfall in January: 2.05"

The month with the highest snowfall is December (3.66").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Saint Charles, SD

Average snowfall days in January - Saint Charles, SD
  • Average snowfall days in January: 6.1 days

The month with the highest number of snowfall days is February (7.8 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
Saint Charles, SD

Average daylight in January / Average sunshine in January - Saint Charles, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

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Average sunshine days in January
Saint Charles, SD

Average sunshine days in January - Saint Charles, SD
  • Average sunshine days in January: 22.4 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is June (9.6 days).

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Average UV index in January
Saint Charles, SD

Average UV index in January - Saint Charles, SD
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Saint Charles, SD

Average cloud cover in January - Saint Charles, SD
  • Average cloud cover in January: 49

The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are July, August and September (Cloud cover 25).

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Average visibility in January
Saint Charles, SD

Average visibility in January - Saint Charles, 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).

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Saint Charles, South Dakota, USA

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