January weather forecast
Roy, UT

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Weather in January

January sees Roy, Utah enveloped in chilling temperatures, reinforcing its place as one of the coldest months of the year. Icy winds bring the average low temperature to 21.6°F (-5.8°C), and snowfall reaches its peak at 6.89" (175mm). The weather also draws a white blanket across the city for a significant number of days; snowfall graces the ground for approximately 8.8 days. Residents are accustomed to bundling up during this time to withstand the cold. As daylight hours are limited, outdoor activities are hindered, making January a quite dormant period.

Temperature

January is the coldest month in Roy, with the temperature often reaching an average high of 33.4°F (0.8°C) and an average low of 21.6°F (-5.8°C).

Humidity

January is the most humid month, with an average relative humidity of 83%.

Rainfall

In Roy, in January, during 4.6 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, in Roy, there are 91.6 rainfall days, and 11.06" (281mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. The month with the most snowfall is January, when snow falls for 8.8 days and typically aggregates up to 6.89" (175mm) of snow.

Daylight

In January, the average length of the day in Roy is 9h and 37min.
On the first day of January, sunrise is at 7:53 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 5:43 pm MST.

Sunshine

With an average of 5.6h of sunshine, January has the least sunshine of the year in Roy, Utah.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Roy. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index, 2 in January, converts into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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Frequently asked questions

What month is the coldest in Roy?

The coldest period in Roy is January, when temperatures fluctuate between an average high of 33.4°F (0.8°C) and a low of 21.6°F (-5.8°C).

How cold is January in Roy?

The average high-temperature and low-temperature in Roy during January are 33.4°F (0.8°C) and 21.6°F (-5.8°C) respectively.

What is the most humid month in Roy?

January is the most humid month in Roy, Utah, with an average relative humidity of 83%.

What is the average humidity in January in Roy?

The average relative humidity in January is 83%.

How much does it rain in Roy in January?

In Roy, Utah, during January, the rain falls for 4.6 days and regularly aggregates up to 1.14" (29mm) of precipitation.

When does it snow the most in Roy?

The month with the most snowfall in Roy is January, when snow falls for 8.8 days and typically aggregates up to 6.89" (175mm) of snow.

How much does it snow in Roy in January?

In Roy, Utah, in January, during 8.8 snowfall days, 6.89" (175mm) of snow is typically accumulated.

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

In January, the average day length is 9h and 37min.

What time are sunrise and sunset in January in Roy?

On the first day of January, sunrise is at 7:53 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 5:43 pm MST.

What is the month with the least sunshine in Roy?

The month with the least sunshine in Roy, Utah, is January, with an average of 5.6h of sunshine.

How many hours of sunshine does Roy have in January?

In Roy, Utah, the average sunshine duration in January is 5.6h.

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

The months with the lowest UV index in Roy are January, February, November and December, with an average maximum UV index of 2.

What is the UV index intensity in January in Roy?

In January, the average daily maximum UV index in Roy is 2. A UV Index estimate of 2, and below, represents a low health risk 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
Roy, UT

Average temperature in January - Roy, UT
  • Average high temperature in January: 33.4°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in January: 21.6°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in January
Roy, UT

Average pressure in January - Roy, UT
  • Average pressure in January: 30.29"Hg

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in January
Roy, UT

Average wind speed in January - Roy, UT
  • Average wind speed in January: 4.8mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).

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Average humidity in January
Roy, UT

Average humidity in January - Roy, UT
  • Average humidity in January: 83%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (37%).

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Average rainfall in January
Roy, UT

Average rainfall in January - Roy, UT
  • Average rainfall in January: 1.14"

The wettest month (with the highest rainfall) is April (1.26").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days in January
Roy, UT

Average rainfall days in January - Roy, UT
  • Average rainfall days in January: 4.6 days

The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is January (4.6 days).

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Average snowfall in January
Roy, UT

Average snowfall in January - Roy, UT
  • Average snowfall in January: 6.89"

The month with the highest snowfall is January (6.89").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in January
Roy, UT

Average snowfall days in January - Roy, UT
  • Average snowfall days in January: 8.8 days

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in January /
Average sunshine in January
Roy, UT

Average daylight in January / Average sunshine in January - Roy, UT
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in January: 5h and 4min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

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Average sunshine days in January
Roy, UT

Average sunshine days in January - Roy, UT
  • Average sunshine days in January: 19.5 days

The months with the most sunshine days are October and November (21.6 days).
The month with the least sunshine days is April (14.7 days).

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Average UV index in January
Roy, UT

Average UV index in January - Roy, UT
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Roy, UT

Average cloud cover in January - Roy, UT
  • Average cloud cover in January: 40

The months with the most cloud cover are January and February (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 10).

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Average visibility in January
Roy, UT

Average visibility in January - Roy, UT
  • 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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Roy, Utah, USA

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