January weather forecast
Newcastle, UT

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Weather in January

January, like December, in Newcastle, Utah, is another cold winter month, with an average temperature fluctuating between 21.4°F (-5.9°C) and 36.9°F (2.7°C).

Temperature

The transition into January shows a subtle variation to a still cold 36.9°F (2.7°C) from December's 36.5°F (2.5°C) in the average high-temperature. In Newcastle, the nighttime temperature averages to a freezing cold 21.4°F (-5.9°C) during January.

Humidity

The most humid month is January, with an average relative humidity of 75%.

Rainfall

In Newcastle, in January, during 3.8 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. In Newcastle, during the entire year, the rain falls for 84.2 days and collects up to 9.21" (234mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Newcastle, in January, snow falls for 6.9 days, with typically accumulated 3.07" (78mm) of snow. Throughout the year, there are 33.4 snowfall days, and 18.11" (460mm) of snow is accumulated.

Daylight

In Newcastle, the average length of the day in January is 9h and 55min.
On the first day of January in Newcastle, Utah, sunrise is at 7:49 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:56 pm MST.

Sunshine

The month with the least sunshine is January, with an average of 6.4h of sunshine.

UV index

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 2 during January leads to these instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Updated: Jun 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is January?

The high-temperature, in January, in Newcastle, is 36.9°F (2.7°C), while the low-temperature averages to 21.4°F (-5.9°C).

What is the most humid month?

January is the most humid month in Newcastle, with an average relative humidity of 75%.

What is the average humidity in January?

In Newcastle, the average relative humidity in January is 75%.

How many days does it rain in January?

In January, the rain falls for 3.8 days. Throughout January, 0.51" (13mm) of precipitation is accumulated.

How many days does it snow in January?

In Newcastle, in January, during 6.9 snowfall days, 3.07" (78mm) of snow is typically accumulated.

What is the average length of the day in January?

In January, the average day length is 9h and 55min.

What time are sunrise and sunset in January?

On the first day of January in Newcastle, sunrise is at 7:49 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:56 pm MST.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 6.4h of sunshine.

How long on average sun shines in January?

The average sunshine duration in January is 6.4h.

What is the UV index intensity in January?

In Newcastle, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from unprotected exposure to 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
Newcastle, UT

Average temperature in January - Newcastle, UT
  • Average high temperature in January: 36.9°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is December (36.5°F).

  • Average low temperature in January: 21.4°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is December (20.8°F).

Average pressure in January
Newcastle, UT

Average pressure in January - Newcastle, UT
  • Average pressure in January: 30.21"Hg

The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in January
Newcastle, UT

Average wind speed in January - Newcastle, UT
  • Average wind speed in January: 6.2mph

The windiest month (with the highest average wind speed) is June (8.5mph).
The calmest month (with the lowest average wind speed) is January (6.2mph).

Average humidity in January
Newcastle, UT

Average humidity in January - Newcastle, UT
  • Average humidity in January: 75%

The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is June (26%).

Average rainfall in January
Newcastle, UT

Average rainfall in January - Newcastle, UT
  • Average rainfall in January: 0.51"

The wettest month (with the highest rainfall) is July (1.81").
The driest month (with the least rainfall) is June (0.24").

Average rainfall days in January
Newcastle, UT

Average rainfall days in January - Newcastle, UT
  • Average rainfall days in January: 3.8 days

The month with the highest number of rainy days is July (14.2 days).
The month with the least rainy days is November (3.2 days).

Average snowfall in January
Newcastle, UT

Average snowfall in January - Newcastle, UT
  • Average snowfall in January: 3.07"

The month with the highest snowfall is December (4.25").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Newcastle, UT

Average snowfall days in January - Newcastle, UT
  • Average snowfall days in January: 6.9 days

The month with the highest number of snowfall days is December (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in January / Average sunshine in January - Newcastle, UT
  • Average daylight in January: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in January: 6h and 2min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 6h and 24min).

Average sunshine days in January
Newcastle, UT

Average sunshine days in January - Newcastle, UT
  • Average sunshine days in January: 22.5 days

The month with the most sunshine days is June (24 days).
The month with the least sunshine days is July (13.4 days).

Average UV index in January
Newcastle, UT

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

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

Average cloud cover in January
Newcastle, UT

Average cloud cover in January - Newcastle, UT
  • Average cloud cover in January: 30

The month with the most cloud cover is December (Cloud cover 31).
The month with the least cloud cover is June (Cloud cover 8).

Average visibility in January
Newcastle, UT

Average visibility in January - Newcastle, UT
  • Average visibility in January: 6mi

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

Newcastle, Utah, USA

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