January weather forecast
Sisseton, SD

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Weather in January

In Sisseton, South Dakota, January sees temperatures dropping to their most frigid. The weather conditions often present challenges with a pronounced dip in high temperatures to 19°F (-7.2°C), low temperatures making a freeze through at 5.4°F (-14.8°C). The landscape is frequented by snowfall, providing a white blanket over the city. Relative humidity also teeters at higher levels, often leading to frost or foggy conditions in the morning. The days are shorter, with sunshine appearing sparingly due to considerable cloud cover.

Temperature

In Sisseton, the month of January is known for its lowest average temperatures, reaching a high of 19°F (-7.2°C) and a low of 5.4°F (-14.8°C).

Humidity

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

Rainfall

January is the month with the least rainfall in Sisseton. Rain falls for 2.2 days and accumulates 0.55" (14mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Sisseton. In Sisseton, during January, snow falls for 11 days and regularly aggregates up to 3.5" (89mm) of snow. In Sisseton, South Dakota, during the entire year, snow falls for 53.2 days and aggregates up to 20.12" (511mm) of snow.

Daylight

In Sisseton, the average length of the day in January is 9h and 10min.
On the first day of the month, sunrise is at 8:08 am and sunset at 4:54 pm. On the last day of January, sunrise is at 7:50 am and sunset at 5:32 pm CST.

Sunshine

January has the least sunshine of the year in Sisseton, South Dakota, with an average of 3.7h of sunshine.

UV index

In January, the average daily maximum UV index in Sisseton is 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: An average maximum UV index of 2 in January leads to these recommendations:
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. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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Frequently asked questions

What are the coldest months in Sisseton?

January, on average, is the coldest month in Sisseton, South Dakota, registering a high temperature of 19°F (-7.2°C) and a low of 5.4°F (-14.8°C).

How cold is January in Sisseton?

The high-temperature, in January, in Sisseton, records 19°F (-7.2°C), while the low-temperature is 5.4°F (-14.8°C).

What is the most humid month in Sisseton?

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

What is the average humidity in January in Sisseton?

The average relative humidity in January is 89%.

What is the driest month in Sisseton?

January is the month with the least rainfall in Sisseton. Rain falls for 2.2 days and accumulates 0.55" (14mm) of precipitation.

How many days does it rain in January in Sisseton?

In January, the rain falls for 2.2 days. Throughout January, 0.55" (14mm) of precipitation is accumulated.

How many days does it snow in January in Sisseton?

In Sisseton, South Dakota, in January, during 11 snowfall days, 3.5" (89mm) of snow is typically accumulated.

How many hours of daylight does Sisseton have in January?

In January, the average day length in Sisseton, South Dakota, is 9h and 10min.

When are sunrise and sunset in January in Sisseton?

In January, on the first day of the month, sunrise is at 8:08 am and sunset at 4:54 pm. On the last day of the month, in Sisseton, sunrise is at 7:50 am and sunset at 5:32 pm CST.

What is the month with the least sunshine in Sisseton?

January has the least sunshine of the year in Sisseton, South Dakota, with an average of 3.7h of sunshine.

How many hours of sunshine does Sisseton have in January?

The average sunshine duration in January is 3.7h.

What is the UV index reading in January in Sisseton?

In January, the average daily maximum UV index in Sisseton, South Dakota, is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
23.5°F -4.7°C
19°F -7.2°C
21.6°F -5.8°C
Average low temperature
12.6°F -10.8°C
5.4°F -14.8°C
8.1°F -13.3°C
Average pressure
30.12" 765mmHg
30.16" 766mmHg
30.17" 766mmHg
Average wind speed
10.7mph 17.2km/h
10.8mph 17.4km/h
10.5mph 16.9km/h
Average max. wind speed
11.5mph 18.5km/h
11.5mph 18.5km/h
11.2mph 18km/h
Average wind speed gusts
17.5mph 28.2km/h
18mph 29km/h
17mph 27.4km/h
Average humidity
86%
89%
87%
Average rainfall
0.94" 24mm
0.55" 14mm
0.59" 15mm
Average rainfall days
3.4
2.2
1.6
Average snowfall
4.29" 109mm
3.5" 89mm
3.78" 96mm
Average snowfall days
11.5
11
10.3
Average daylight
8h 5min
9h 1min
10h 2min
Average sunshine
4h 0min
3h 4min
4h 1min
Average sunshine days
17.6
17.4
17
Average UV index
1
2
2
Average cloud cover
57%
60%
58%
Average visibility
6mi 9.7km
5mi 8km
6mi 9.7km

Average temperature in January
Sisseton, SD

Average temperature in January - Sisseton, SD
  • Average high temperature in January: 19°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (19°F).

  • Average low temperature in January: 5.4°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).

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Average pressure in January
Sisseton, SD

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

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in January
Sisseton, SD

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

The windiest months (with the highest average wind speed) are April and October (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).

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Average humidity in January
Sisseton, SD

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

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is September (65%).

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Average rainfall in January
Sisseton, SD

Average rainfall in January - Sisseton, SD
  • Average rainfall in January: 0.55"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in January
Sisseton, SD

Average rainfall days in January - Sisseton, SD
  • Average rainfall days in January: 2.2 days

The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (1.6 days).

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Average snowfall in January
Sisseton, SD

Average snowfall in January - Sisseton, SD
  • Average snowfall in January: 3.5"

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

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Average snowfall days in January
Sisseton, SD

Average snowfall days in January - Sisseton, SD
  • Average snowfall days in January: 11 days

The month with the highest number of snowfall days is December (11.5 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
Sisseton, SD

Average daylight in January / Average sunshine in January - Sisseton, SD
  • Average daylight in January: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in January: 3h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in January
Sisseton, SD

Average sunshine days in January - Sisseton, SD
  • Average sunshine days in January: 17.4 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index in January
Sisseton, SD

Average UV index in January - Sisseton, SD
  • Average UV index in January: 2

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

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Average cloud cover in January
Sisseton, SD

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

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 25).

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Average visibility in January
Sisseton, SD

Average visibility in January - Sisseton, 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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Sisseton, South Dakota, USA

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