January weather forecast
Jay Em, WY

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Weather in January

January, like December, in Jay Em, Wyoming, is another cold winter month, with an average temperature ranging between min 19.9°F (-6.7°C) and max 33.1°F (0.6°C).

Temperature

During January, the average high-temperature is a still cold 33.1°F (0.6°C), maintaining a close resemblance to that of the preceding month. During January, the average low-temperature in Jay Em is a subzero cold 19.9°F (-6.7°C).

Humidity

The most humid month is January, with an average relative humidity of 74%.

Rainfall

The month with the least rainfall is January, when the rain falls for 3.3 days and typically collects 0.28" (7mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. In Jay Em, in January, snow falls for 7.3 days, with typically accumulated 1.57" (40mm) of snow. In Jay Em, during the entire year, snow falls for 43.6 days and aggregates up to 15.63" (397mm) of snow.

Daylight

In Jay Em, the average length of the day in January is 9h and 29min.
On the first day of January, sunrise is at 7:26 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:09 pm MST.

Sunshine

In Jay Em, the average sunshine in January is 6.4h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum daily UV index of 2 during January morphs into the following directions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Updated: Jul 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in January?

An average high-temperature, in January, in Jay Em, is 33.1°F (0.6°C) and the average low-temperature is 19.9°F (-6.7°C).

What is the most humid month in Jay Em?

The most humid month is January, with an average relative humidity of 74%.

What is the average humidity in January?

In January, the average relative humidity in Jay Em is 74%.

What is the driest month?

January is the month with the least rainfall. Rain falls for 3.3 days and accumulates 0.28" (7mm) of precipitation.

How many days does it rain in January in Jay Em?

In January, the rain falls for 3.3 days. Throughout January, 0.28" (7mm) of precipitation is accumulated.

How much does it snow in January?

In January, it is snowing for 7.3 days. Throughout January, 1.57" (40mm) of snow is accumulated.

What is the average length of the day in January?

In Jay Em, the average day length in January is 9h and 29min.

When is the sunrise / sunset in January?

On the first day of January, sunrise is at 7:26 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:09 pm MST.

How long on average sun shines in January?

The average sunshine duration in January is 6.4h.

What are the months with the lowest UV index?

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

What is the UV index reading in January in Jay Em?

In Jay Em, Wyoming, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health risk 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
Jay Em, WY

Average temperature in January - Jay Em, WY
  • Average high temperature in January: 33.1°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (32°F).

  • Average low temperature in January: 19.9°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is December (18.9°F).

Average pressure in January
Jay Em, WY

Average pressure in January - Jay Em, WY
  • 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 (29.84"Hg).

Average wind speed in January
Jay Em, WY

Average wind speed in January - Jay Em, WY
  • Average wind speed in January: 11.6mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).

Average humidity in January
Jay Em, WY

Average humidity in January - Jay Em, WY
  • Average humidity in January: 74%

The month with the highest relative humidity is January (74%).
The months with the lowest relative humidity are August and September (44%).

Average rainfall in January
Jay Em, WY

Average rainfall in January - Jay Em, WY
  • Average rainfall in January: 0.28"

The wettest months (with the highest rainfall) are May and June (1.57").
The driest month (with the least rainfall) is January (0.28").

Average rainfall days in January
Jay Em, WY

Average rainfall days in January - Jay Em, WY
  • Average rainfall days in January: 3.3 days

The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is December (2.7 days).

Average snowfall in January
Jay Em, WY

Average snowfall in January - Jay Em, WY
  • Average snowfall in January: 1.57"

The month with the highest snowfall is March (2.56").
The months with the least snowfall are June, July and August (0").

Average snowfall days in January
Jay Em, WY

Average snowfall days in January - Jay Em, WY
  • Average snowfall days in January: 7.3 days

The month with the highest number of snowfall days is February (8 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in January /
Average sunshine in January
Jay Em, WY

Average daylight in January / Average sunshine in January - Jay Em, WY
  • Average daylight in January: 9h and 3min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in January: 6h and 2min

The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 6h and 12min).

Average sunshine days in January
Jay Em, WY

Average sunshine days in January - Jay Em, WY
  • Average sunshine days in January: 21.5 days

The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is June (12.3 days).

Average UV index in January
Jay Em, WY

Average UV index in January - Jay Em, WY
  • 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).

Average cloud cover in January
Jay Em, WY

Average cloud cover in January - Jay Em, WY
  • Average cloud cover in January: 32

The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 16).

Average visibility in January
Jay Em, WY

Average visibility in January - Jay Em, WY
  • 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).

Jay Em, Wyoming, USA

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