January weather forecast
Goodwin, SD

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Weather in January

January, like December, is a freezing cold winter month in Goodwin, South Dakota, with an average temperature varying between 5.5°F (-14.7°C) and 19.4°F (-7°C).

Temperature

January, having an average high-temperature of 19.4°F (-7°C) and an average low-temperature of 5.5°F (-14.7°C), is the coldest month.

Humidity

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

Rainfall

The months with the least rainfall are January and February Rain falls for 2.9 days and accumulates 0.59" (15mm) of rain.

Snowfall

January through May, October through December are months with snowfall. The months with the most snowfall in Goodwin are January and December, with an average 3.74" (95mm) of accumulated snow.

Daylight

The average length of the day in January is 9h and 15min.
On the first day of the month, sunrise is at 8:05 am and sunset at 4:56 pm. On the last day of January, sunrise is at 7:48 am and sunset at 5:33 pm CST.

Sunshine

With an average of 3.6h of sunshine, January has the least sunshine of the year.

UV index

The months with the lowest UV index in Goodwin are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 1 in January interprets into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.

Frequently asked questions

What is the coldest month?

Goodwin's coldest month, January, generally records average temperatures ranging from a high of 19.4°F (-7°C) to a low of 5.5°F (-14.7°C).

How cold is January?

January temperatures in Goodwin vary between a high-temperature of 19.4°F (-7°C) and a low-temperature of 5.5°F (-14.7°C).

What is the most humid month?

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

What is the average humidity in January?

In January, the average relative humidity is 90%.

What is the driest month?

The months with the least rainfall are January and February Rain falls for 2.9 days and accumulates 0.59" (15mm) of rain.

How many days does it rain in January?

In Goodwin, during January, the rain falls for 2.9 days and regularly aggregates up to 0.59" (15mm) of precipitation.

What is the snowiest month?

The months with the most snowfall are January and December, with an average 3.74" (95mm) of accumulated snow.

How many days does it snow in January?

In Goodwin, in January, snow falls for 14.4 days, with typically accumulated 3.74" (95mm) of snow.

What is the average length of the day in January?

In Goodwin, the average day length in January is 9h and 15min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 8:05 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:33 pm CST.

What is the month with the least sunshine?

With an average of 3.6h of sunshine, January has the least sunshine of the year.

How long on average sun shines in January?

In January, the average sunshine duration is 3.6h.

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.

How high is the UV index in January in Goodwin?

The average daily maximum UV index in January in Goodwin is 1. A UV Index reading of 2, and below, represents a low health risk from exposure to Sun's UV rays.
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
Goodwin, SD

Average temperature in January - Goodwin, SD
  • Average high temperature in January: 19.4°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (19.4°F).

  • Average low temperature in January: 5.5°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (5.5°F).

Average pressure in January
Goodwin, SD

Average pressure in January - Goodwin, 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
Goodwin, SD

Average wind speed in January - Goodwin, SD
  • Average wind speed in January: 11mph

The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.5mph).

Average humidity in January
Goodwin, SD

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

The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are September and October (68%).

Average rainfall in January
Goodwin, SD

Average rainfall in January - Goodwin, SD
  • Average rainfall in January: 0.59"

The wettest month (with the highest rainfall) is June (3.19").
The driest months (with the least rainfall) are January and February (0.59").

Average rainfall days in January
Goodwin, SD

Average rainfall days in January - Goodwin, SD
  • Average rainfall days in January: 2.9 days

The month with the highest number of rainy days is June (17.2 days).
The month with the least rainy days is February (2.7 days).

Average snowfall in January
Goodwin, SD

Average snowfall in January - Goodwin, SD
  • Average snowfall in January: 3.74"

The months with the highest snowfall are January and December (3.74").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Goodwin, SD

Average snowfall days in January - Goodwin, SD
  • Average snowfall days in January: 14.4 days

The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in January: 3h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in January
Goodwin, SD

Average sunshine days in January - Goodwin, SD
  • Average sunshine days in January: 15.1 days

The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in January
Goodwin, SD

Average UV index in January - Goodwin, 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
Goodwin, SD

Average cloud cover in January - Goodwin, SD
  • Average cloud cover in January: 63

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in January
Goodwin, SD

Average visibility in January - Goodwin, 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).

Goodwin, South Dakota, USA

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