January weather forecast
Grantsville, UT

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Weather in January

January, like December, in Grantsville, Utah, is a wintry winter month, with an average temperature ranging between min 21.2°F (-6°C) and max 33.4°F (0.8°C).

Temperature

Grantsville's January weather, with an average high temperature of 33.4°F (0.8°C) and an average low temperature of 21.2°F (-6°C), tends to be the coldest of the year.

Humidity

With an average relative humidity of 83%, January is the most humid month in Grantsville.

Rainfall

In Grantsville, during January, the rain falls for 10.1 days and regularly aggregates up to 1.69" (43mm) of precipitation. In Grantsville, during the entire year, the rain falls for 137.7 days and collects up to 20.98" (533mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Grantsville. In Grantsville, in January, snow falls for 11.9 days, with typically accumulated 9.21" (234mm) of snow. Throughout the year, in Grantsville, there are 53.4 snowfall days, and 40.28" (1023mm) of snow is accumulated.

Daylight

In Grantsville, the average length of the day in January is 9h and 40min.
On the first day of January in Grantsville, sunrise is at 7:53 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:45 pm MST.

Sunshine

With an average of 5.1h of sunshine, January has the least sunshine of the year.

UV index

In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Around midday, solar radiation is most harmful; hence, exposure should be limited. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What time of the year is the coldest in Grantsville?

Grantsville experiences its lowest temperatures in January, with an average peak of 33.4°F (0.8°C) and a low of 21.2°F (-6°C).

How cold is it in Grantsville in January?

During January, Grantsville experiences an average high-temperature of 33.4°F (0.8°C) and a low-temperature of 21.2°F (-6°C).

What is the most humid month in Grantsville?

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

What is the average humidity in January in Grantsville?

The average relative humidity in January is 83%.

How many days does it rain in January in Grantsville?

In Grantsville, Utah, during January, the rain falls for 10.1 days and regularly aggregates up to 1.69" (43mm) of precipitation.

How much does it snow in Grantsville in January?

In Grantsville, Utah, in January, snow falls for 11.9 days, with typically accumulated 9.21" (234mm) of snow.

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

In Grantsville, the average day length in January is 9h and 40min.

What time are sunrise and sunset in January in Grantsville?

In January, on the first day of the month, sunrise is at 7:53 am and sunset at 5:13 pm. On the last day of the month, in Grantsville, sunrise is at 7:40 am and sunset at 5:45 pm MST.

What is the month with the least sunshine in Grantsville?

The month with the least sunshine in Grantsville, Utah, is January, with an average of 5.1h of sunshine.

How many hours of sunshine does Grantsville have in January?

In January, the average sunshine duration in Grantsville, Utah, is 5.1h.

How high is the UV index in January in Grantsville?

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

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

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in January: 21.2°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

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Average pressure in January
Grantsville, UT

Average pressure in January - Grantsville, UT
  • Average pressure in January: 30.27"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in January
Grantsville, UT

Average wind speed in January - Grantsville, UT
  • Average wind speed in January: 6mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is January (6mph).

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Average humidity in January
Grantsville, UT

Average humidity in January - Grantsville, 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 (36%).

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Average rainfall in January
Grantsville, UT

Average rainfall in January - Grantsville, UT
  • Average rainfall in January: 1.69"

The wettest month (with the highest rainfall) is April (2.52").
The driest month (with the least rainfall) is June (1.1").

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Average rainfall days in January
Grantsville, UT

Average rainfall days in January - Grantsville, UT
  • Average rainfall days in January: 10.1 days

The month with the highest number of rainy days is April (16.3 days).
The month with the least rainy days is November (7.5 days).

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Average snowfall in January
Grantsville, UT

Average snowfall in January - Grantsville, UT
  • Average snowfall in January: 9.21"

The month with the highest snowfall is December (9.69").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Grantsville, UT

Average snowfall days in January - Grantsville, UT
  • Average snowfall days in January: 11.9 days

The month with the highest number of snowfall days is December (12.5 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
Grantsville, UT

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in January: 5h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

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Average sunshine days in January
Grantsville, UT

Average sunshine days in January - Grantsville, UT
  • Average sunshine days in January: 14.9 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is February (10.2 days).

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Average UV index in January
Grantsville, UT

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in January
Grantsville, UT

Average cloud cover in January - Grantsville, UT
  • Average cloud cover in January: 45

The month with the most cloud cover is January (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in January
Grantsville, UT

Average visibility in January - Grantsville, UT
  • Average visibility in January: 5mi

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

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Grantsville, Utah, USA

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