January weather forecast
Potosi, WI

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Weather in January

January, the same as December, in Potosi, Wisconsin, is another subzero cold winter month, with an average temperature varying between 12°F (-11.1°C) and 24.3°F (-4.3°C).

Temperature

Potosi's January weather reaches an average high of 24.3°F (-4.3°C) and an average low of 12°F (-11.1°C), making it the coldest month.

Humidity

The most humid month is January, with an average relative humidity of 88%.

Rainfall

January and February are months with the least rain when the rain falls for 4.5 days and typically aggregates up to 1.02" (26mm) of rain.

Snowfall

Months with snowfall are January through April, October through December. The month with the most snowfall is January, when snow falls for 13.7 days and typically aggregates up to 4.29" (109mm) of snow.

Daylight

The average length of the day in January is 9h and 28min.
On the first day of the month, sunrise is at 7:33 am and sunset at 4:39 pm. On the last day of January, sunrise is at 7:18 am and sunset at 5:14 pm CST.

Sunshine

The month with the least sunshine is January, with an average of 3.5h of sunshine.

UV index

The months with the lowest UV index in Potosi are January, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 1 in January transforms into this advice:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Updated: Jul 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

Potosi's coldest weather arrives in January, when temperatures average a high of 24.3°F (-4.3°C) and a low of 12°F (-11.1°C).

How cold is January?

January temperatures vary between a high-temperature of 24.3°F (-4.3°C) and a low-temperature of 12°F (-11.1°C).

What is the most humid month?

January is the most humid month, with an average relative humidity of 88%.

What is the average humidity in January?

The average relative humidity in January is 88%.

What is the driest month?

January and February are months with the least rain when the rain falls for 4.5 days and typically aggregates up to 1.02" (26mm) of rain.

How many days does it rain in January?

In Potosi, during January, the rain falls for 4.5 days and regularly aggregates up to 1.02" (26mm) of precipitation.

What is the snowiest month?

January is the month with the most snowfall. Snow falls for 13.7 days and accumulates 4.29" (109mm) of snow.

How much does it snow in January?

In Potosi, in January, during 13.7 snowfall days, 4.29" (109mm) of snow is typically accumulated.

How many hours of daylight does Potosi have in January?

The average day length in January is 9h and 28min.

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:33 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 5:14 pm CST.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 3.5h of sunshine.

How many hours of sunshine does Potosi have in January?

In Potosi, the average sunshine duration in January is 3.5h.

When is the lowest UV index?

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

How high is the UV index in January?

In Potosi, the average daily maximum UV index in January is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
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
Potosi, WI

Average temperature in January - Potosi, WI
  • Average high temperature in January: 24.3°F

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (24.3°F).

  • Average low temperature in January: 12°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (12°F).

Average pressure in January
Potosi, WI

Average pressure in January - Potosi, WI
  • Average pressure in January: 30.13"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in January
Potosi, WI

Average wind speed in January - Potosi, WI
  • Average wind speed in January: 10.1mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in January
Potosi, WI

Average humidity in January - Potosi, WI
  • Average humidity in January: 88%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (76%).

Average rainfall in January
Potosi, WI

Average rainfall in January - Potosi, WI
  • Average rainfall in January: 1.02"

The wettest month (with the highest rainfall) is June (3.5").
The driest months (with the least rainfall) are January and February (1.02").

Average rainfall days in January
Potosi, WI

Average rainfall days in January - Potosi, WI
  • Average rainfall days in January: 4.5 days

The months with the highest number of rainy days are May and June (18.3 days).
The month with the least rainy days is February (4.1 days).

Average snowfall in January
Potosi, WI

Average snowfall in January - Potosi, WI
  • Average snowfall in January: 4.29"

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

Average snowfall days in January
Potosi, WI

Average snowfall days in January - Potosi, WI
  • Average snowfall days in January: 13.7 days

The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Potosi, WI

Average daylight in January / Average sunshine in January - Potosi, WI
  • Average daylight in January: 9h and 3min

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: 3h and 3min

The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in January
Potosi, WI

Average sunshine days in January - Potosi, WI
  • Average sunshine days in January: 14.7 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (9.3 days).

Average UV index in January
Potosi, WI

Average UV index in January - Potosi, WI
  • Average UV index in January: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).

Average cloud cover in January
Potosi, WI

Average cloud cover in January - Potosi, WI
  • 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 31).

Average visibility in January
Potosi, WI

Average visibility in January - Potosi, WI
  • Average visibility in January: 5mi

The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).

Potosi, Wisconsin, USA

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