January weather forecast
Merrillan, WI

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Weather in January

Low temperatures are a characteristic trait in January in Merrillan, Wisconsin, with mercury columns sometimes dipping as low as 7.3°F (-13.7°C). The winter chill results in a high relative humidity, reaching 91%, the highest in the year. Cold days with clear skies and little sunshine are the norm. January also witnesses significant snowfall, making this period ideal for winter sports enthusiasts. This period has shorter daylight hours with a mean of 9.3 hours daily.

Temperature

January, recording an average high temperature of 20.7°F (-6.3°C) and a low temperature of 7.3°F (-13.7°C), is Merrillan's coldest month.

Humidity

With an average relative humidity of 91%, January is the most humid month.

Rainfall

January is the month with the least rainfall. Rain falls for 3.7 days and accumulates 0.51" (13mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Merrillan, during January, snow falls for 15.4 days and regularly aggregates up to 2.8" (71mm) of snow. Throughout the year, there are 62.1 snowfall days, and 13.11" (333mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 18min.
On the first day of January, sunrise is at 7:39 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:10 pm CST.

Sunshine

With an average of 3h of sunshine, January has the least sunshine of the year.

UV index

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Merrillan, Wisconsin. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A maximum high daily UV index of 1 during January translates into the following directions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Frequently asked questions

What time of the year is the coldest in Merrillan?

January, known for its average high temperature of 20.7°F (-6.3°C) and an average low temperature of 7.3°F (-13.7°C), is the coldest month in Merrillan, Wisconsin.

How cold is January in Merrillan?

The high-temperature, in January, in Merrillan, records 20.7°F (-6.3°C), while the low-temperature is 7.3°F (-13.7°C).

What is the most humid month in Merrillan?

January is the most humid month in Merrillan, with an average relative humidity of 91%.

What is the average humidity in January in Merrillan?

The average relative humidity in January is 91%.

What is the driest month in Merrillan?

The month with the least rainfall is January, when the rain falls for 3.7 days and typically collects 0.51" (13mm) of precipitation.

How many days does it rain in January in Merrillan?

In January, in Merrillan, Wisconsin, the rain falls for 3.7 days. Throughout January, 0.51" (13mm) of precipitation is accumulated.

How much does it snow in Merrillan in January?

In January, in Merrillan, Wisconsin, it is snowing for 15.4 days. Throughout January, 2.8" (71mm) of snow is accumulated.

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

In Merrillan, the average day length in January is 9h and 18min.

When is the sunrise / sunset in January in Merrillan?

On the first day of January in Merrillan, Wisconsin, sunrise is at 7:39 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:10 pm CST.

What is the month with the least sunshine in Merrillan?

January has the least sunshine of the year in Merrillan, with an average of 3h of sunshine.

How long on average sun shines in January in Merrillan?

The average sunshine duration in January is 3h.

What is the month with the lowest UV index in Merrillan?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Merrillan, Wisconsin.

How high is the UV index in January in Merrillan?

In Merrillan, Wisconsin, the average daily maximum UV index in January is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
26.4°F -3.1°C
20.7°F -6.3°C
24.3°F -4.3°C
Average low temperature
15.4°F -9.2°C
7.3°F -13.7°C
10.4°F -12°C
Average pressure
30.1" 765mmHg
30.12" 765mmHg
30.12" 765mmHg
Average wind speed
8.6mph 13.8km/h
8.8mph 14.2km/h
8.8mph 14.2km/h
Average max. wind speed
9.3mph 15km/h
9.4mph 15.1km/h
9.4mph 15.1km/h
Average wind speed gusts
13.9mph 22.4km/h
14.4mph 23.2km/h
14.5mph 23.3km/h
Average humidity
88%
91%
90%
Average rainfall
0.79" 20mm
0.51" 13mm
0.55" 14mm
Average rainfall days
4
3.7
2.8
Average snowfall
2.83" 72mm
2.8" 71mm
2.99" 76mm
Average snowfall days
13.4
15.4
12.7
Average daylight
8h 5min
9h 2min
10h 3min
Average sunshine
3h 1min
3h 0min
3h 1min
Average sunshine days
16.9
15.7
16.3
Average UV index
1
1
1
Average cloud cover
67%
69%
66%
Average visibility
5mi 8km
5mi 8km
5mi 8km

Average temperature in January
Merrillan, WI

Average temperature in January - Merrillan, WI
  • Average high temperature in January: 20.7°F

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in January: 7.3°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (7.3°F).

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Average pressure in January
Merrillan, WI

Average pressure in January - Merrillan, WI
  • Average pressure in January: 30.12"Hg

The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in January
Merrillan, WI

Average wind speed in January - Merrillan, WI
  • Average wind speed in January: 8.8mph

The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).

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Average humidity in January
Merrillan, WI

Average humidity in January - Merrillan, WI
  • Average humidity in January: 91%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (77%).

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Average rainfall in January
Merrillan, WI

Average rainfall in January - Merrillan, WI
  • Average rainfall in January: 0.51"

The wettest month (with the highest rainfall) is June (2.91").
The driest month (with the least rainfall) is January (0.51").

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Average rainfall days in January
Merrillan, WI

Average rainfall days in January - Merrillan, WI
  • Average rainfall days in January: 3.7 days

The month with the highest number of rainy days is June (17.1 days).
The month with the least rainy days is February (2.8 days).

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Average snowfall in January
Merrillan, WI

Average snowfall in January - Merrillan, WI
  • Average snowfall in January: 2.8"

The month with the highest snowfall is February (2.99").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Merrillan, WI

Average snowfall days in January - Merrillan, WI
  • Average snowfall days in January: 15.4 days

The month with the highest number of snowfall days is January (15.4 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
Merrillan, WI

Average daylight in January / Average sunshine in January - Merrillan, WI
  • 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 0min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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Average sunshine days in January
Merrillan, WI

Average sunshine days in January - Merrillan, WI
  • Average sunshine days in January: 15.7 days

The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is June (9.8 days).

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Average UV index in January
Merrillan, WI

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

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Average cloud cover in January
Merrillan, WI

Average cloud cover in January - Merrillan, WI
  • Average cloud cover in January: 69

The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in January
Merrillan, WI

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

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

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Merrillan, Wisconsin, USA

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