January weather forecast
Egan, SD

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Weather in January

January, the same as December, in Egan, South Dakota, is another subzero cold winter month, with temperature in the range of an average high of 21.6°F (-5.8°C) and an average low of 7.7°F (-13.5°C).

Temperature

Egan's coldest month, January, registers temperatures that range from a high of 21.6°F (-5.8°C) to a low of 7.7°F (-13.5°C).

Humidity

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

Rainfall

January and November are months with the least rain in Egan when the rain falls for 2.7 days and typically aggregates up to 0.63" (16mm) of rain.

Snowfall

Months with snowfall are January through May, October through December. In Egan, in January, during 11.8 snowfall days, 3.54" (90mm) of snow is typically accumulated. In Egan, during the entire year, snow falls for 53.1 days and aggregates up to 20.04" (509mm) of snow.

Daylight

In January, the average length of the day in Egan is 9h and 20min.
On the first day of January, sunrise is at 8:01 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 5:34 pm CST.

Sunshine

With an average of 3.8h of sunshine, January has the least sunshine of the year in Egan.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Egan. 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: In January, the maximum UV index of 1 suggests these recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Always opt for UVA and UVB-resistant sunglasses on radiant days. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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Frequently asked questions

What is the coldest month in Egan?

January, with average temperatures reaching a high of 21.6°F (-5.8°C) and a low of 7.7°F (-13.5°C), is the coldest month in Egan.

How cold is January in Egan?

The average high-temperature and low-temperature in Egan, South Dakota, during January are 21.6°F (-5.8°C) and 7.7°F (-13.5°C) respectively.

What is the most humid month in Egan?

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

What is the average humidity in January in Egan?

In January, the average relative humidity in Egan is 89%.

What is the driest month in Egan?

January and November are months with the least rain when the rain falls for 2.7 days and typically aggregates up to 0.63" (16mm) of rain.

How much does it rain in Egan in January?

In January, in Egan, South Dakota, the rain falls for 2.7 days. Throughout January, 0.63" (16mm) of precipitation is accumulated.

How much does it snow in Egan in January?

In January, in Egan, it is snowing for 11.8 days. Throughout January, 3.54" (90mm) of snow is accumulated.

What is the average length of the day in January in Egan?

In Egan, the average day length in January is 9h and 20min.

When is the sunrise / sunset in January in Egan?

In January, on the first day of the month, sunrise is at 8:01 am and sunset at 4:58 pm. On the last day of the month, in Egan, South Dakota, sunrise is at 7:45 am and sunset at 5:34 pm CST.

What is the month with the least sunshine in Egan?

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

How many hours of sunshine does Egan have in January?

In Egan, South Dakota, the average sunshine duration in January is 3.8h.

What are the months with the lowest UV index in Egan?

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

What is the UV index intensity in January in Egan?

In Egan, South Dakota, the average daily maximum UV index in January is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
25.7°F -3.5°C
21.6°F -5.8°C
25°F -3.9°C
Average low temperature
14.4°F -9.8°C
7.7°F -13.5°C
10.9°F -11.7°C
Average pressure
30.13" 765mmHg
30.16" 766mmHg
30.16" 766mmHg
Average wind speed
10.6mph 17.1km/h
10.7mph 17.2km/h
10.7mph 17.2km/h
Average max. wind speed
11.3mph 18.2km/h
11.4mph 18.3km/h
11.4mph 18.3km/h
Average wind speed gusts
17.3mph 27.8km/h
17.8mph 28.6km/h
17.1mph 27.5km/h
Average humidity
86%
89%
85%
Average rainfall
0.98" 25mm
0.63" 16mm
0.67" 17mm
Average rainfall days
3.8
2.7
2.4
Average snowfall
4.8" 122mm
3.54" 90mm
4.13" 105mm
Average snowfall days
11.6
11.8
9.9
Average daylight
9h 0min
9h 2min
10h 3min
Average sunshine
4h 1min
3h 5min
4h 5min
Average sunshine days
18.4
18.1
17
Average UV index
1
1
2
Average cloud cover
56%
60%
56%
Average visibility
6mi 9.7km
5mi 8km
6mi 9.7km

Average temperature in January
Egan, SD

Average temperature in January - Egan, SD
  • Average high temperature in January: 21.6°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 (21.6°F).

  • Average low temperature in January: 7.7°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 (7.7°F).

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Average pressure in January
Egan, SD

Average pressure in January - Egan, 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
Egan, SD

Average wind speed in January - Egan, SD
  • Average wind speed in January: 10.7mph

The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).

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Average humidity in January
Egan, SD

Average humidity in January - Egan, 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 (68%).

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Average rainfall in January
Egan, SD

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

The wettest month (with the highest rainfall) is June (3.15").
The driest months (with the least rainfall) are January and November (0.63").

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Average rainfall days in January
Egan, SD

Average rainfall days in January - Egan, SD
  • Average rainfall days in January: 2.7 days

The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (2.4 days).

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Average snowfall in January
Egan, SD

Average snowfall in January - Egan, SD
  • Average snowfall in January: 3.54"

The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Egan, SD

Average snowfall days in January - Egan, SD
  • Average snowfall days in January: 11.8 days

The month with the highest number of snowfall days is January (11.8 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
Egan, SD

Average daylight in January / Average sunshine in January - Egan, 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 30min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in January
Egan, SD

Average sunshine days in January - Egan, SD
  • Average sunshine days in January: 18.1 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in January
Egan, SD

Average UV index in January - Egan, 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, November and December (UV index 1).

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Average cloud cover in January
Egan, SD

Average cloud cover in January - Egan, 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 29).

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Average visibility in January
Egan, SD

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

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