January weather forecast
Green River, WY

Weather in January

January, like December, is another subzero cold winter month in Green River, Wyoming, with an average temperature ranging between max 26.6°F (-3°C) and min 10.8°F (-11.8°C).

Temperature

In January, the average high-temperature is almost the same as in December - a still freezing cold 26.6°F (-3°C). In Green River, the average low-temperature is 10.8°F (-11.8°C).

Humidity

With an average relative humidity of 84%, January is the most humid month in Green River.

Rainfall

In Green River, in January, during 5.6 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. Throughout the year, there are 93.5 rainfall days, and 10.31" (262mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Green River, Wyoming, are January through June, September through December. In Green River, in January, during 13.3 snowfall days, 4.37" (111mm) of snow is typically accumulated. Throughout the year, in Green River, there are 75.5 snowfall days, and 30.16" (766mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 35min.
On the first day of the month, sunrise is at 7:44 am and sunset at 4:58 pm. On the last day of January, in Green River, sunrise is at 7:30 am and sunset at 5:32 pm MST.

Sunshine

The months with the least sunshine are January and December, with an average of 5.9h of sunshine.

UV index

The months with the lowest UV index in Green River are January through April, October through December, with an average maximum UV index of 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: In January, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the most humid month in Green River?

The most humid month in Green River, Wyoming, is January, with an average relative humidity of 84%.

What is the average humidity in January in Green River?

In Green River, the average relative humidity in January is 84%.

How much does it rain in Green River in January?

In January, in Green River, the rain falls for 5.6 days. Throughout January, 0.67" (17mm) of precipitation is accumulated.

How much does it snow in Green River in January?

In Green River, Wyoming, during January, snow falls for 13.3 days and regularly aggregates up to 4.37" (111mm) of snow.

How many hours of daylight does Green River have in January?

In Green River, the average day length in January is 9h and 35min.

What time are sunrise and sunset in January in Green River?

In January, on the first day of the month, sunrise is at 7:44 am and sunset at 4:58 pm. On the last day of the month, in Green River, Wyoming, sunrise is at 7:30 am and sunset at 5:32 pm MST.

What is the month with the least sunshine in Green River?

The months with the least sunshine are January and December, with an average of 5.9h of sunshine.

How long on average sun shines in January in Green River?

In January, the average sunshine duration in Green River, Wyoming, is 5.9h.

What is the month with the lowest UV index in Green River?

The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2.

How high is the UV index in January in Green River?

In Green River, Wyoming, 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 unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Green River, WY

Average temperature in January - Green River, WY
  • Average high temperature in January: 26.6°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (25.7°F).

  • Average low temperature in January: 10.8°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 (10.8°F).

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Average pressure in January
Green River, WY

Average pressure in January - Green River, WY
  • Average pressure in January: 30.28"Hg

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in January
Green River, WY

Average wind speed in January - Green River, WY
  • Average wind speed in January: 9.4mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).

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Average humidity in January
Green River, WY

Average humidity in January - Green River, WY
  • Average humidity in January: 84%

The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are July and August (31%).

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Average rainfall in January
Green River, WY

Average rainfall in January - Green River, WY
  • Average rainfall in January: 0.67"

The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is July (0.47").

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Average rainfall days in January
Green River, WY

Average rainfall days in January - Green River, WY
  • Average rainfall days in January: 5.6 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is December (4.7 days).

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Average snowfall in January
Green River, WY

Average snowfall in January - Green River, WY
  • Average snowfall in January: 4.37"

The month with the highest snowfall is March (6.14").
The months with the least snowfall are July and August (0").

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Average snowfall days in January
Green River, WY

Average snowfall days in January - Green River, WY
  • Average snowfall days in January: 13.3 days

The month with the highest number of snowfall days is December (13.5 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in January /
Average sunshine in January
Green River, WY

Average daylight in January / Average sunshine in January - Green River, WY
  • Average daylight in January: 9h and 35min

The month with the longest days is June (Average daylight: 15h and 8min).
The month with the shortest days is December (Average daylight: 9h and 14min).

  • Average sunshine in January: 5h and 54min

The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).

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Average sunshine days in January
Green River, WY

Average sunshine days in January - Green River, WY
  • Average sunshine days in January: 16.8 days

The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (11.5 days).

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Average UV index in January
Green River, WY

Average UV index in January - Green River, WY
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in January
Green River, WY

Average cloud cover in January - Green River, WY
  • Average cloud cover in January: 41

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in January
Green River, WY

Average visibility in January - Green River, WY
  • Average visibility in January: 5mi

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

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