January weather forecast
Grass Creek, WY

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Weather in January

January, the same as December, in Grass Creek, Wyoming, is another subzero cold winter month, with an average temperature ranging between max 29.8°F (-1.2°C) and min 14.4°F (-9.8°C).

Temperature

The unfolding of January shows an average high-temperature of a still subzero cold 29.8°F (-1.2°C), indicating a slight variance from December's 27.3°F (-2.6°C). An average temperature of 14.4°F (-9.8°C) is recorded during the nights in January.

Humidity

In January, the average relative humidity is 76%.

Rainfall

January is the month with the least rainfall. Rain falls for 1.6 days and accumulates 0.2" (5mm) of precipitation.

Snowfall

Months with snowfall in Grass Creek are January through June, September through December. In Grass Creek, Wyoming, during January, snow falls for 5.3 days and regularly aggregates up to 1.57" (40mm) of snow. In Grass Creek, during the entire year, snow falls for 55.8 days and aggregates up to 30.31" (770mm) of snow.

Daylight

In January, the average length of the day is 9h and 21min.
On the first day of the month, sunrise is at 7:48 am and sunset at 4:47 pm. On the last day of January, in Grass Creek, sunrise is at 7:32 am and sunset at 5:23 pm MST.

Sunshine

The average sunshine in January in Grass Creek, Wyoming, is 6.6h.

UV index

January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Grass Creek. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 2 during January translates into the following directions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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Frequently asked questions

How cold is it in Grass Creek in January?

The average high-temperature, in January, in Grass Creek, is 29.8°F (-1.2°C), while the average low-temperature is 14.4°F (-9.8°C).

What is the average humidity in January in Grass Creek?

In January, the average relative humidity in Grass Creek, Wyoming, is 76%.

What is the driest month in Grass Creek?

January is the month with the least rainfall. Rain falls for 1.6 days and accumulates 0.2" (5mm) of precipitation.

How much does it rain in Grass Creek in January?

In Grass Creek, Wyoming, during January, the rain falls for 1.6 days and regularly aggregates up to 0.2" (5mm) of precipitation.

How many days does it snow in January in Grass Creek?

In Grass Creek, Wyoming, in January, during 5.3 snowfall days, 1.57" (40mm) of snow is typically accumulated.

What is the average length of the day in January in Grass Creek?

In January, the average day length is 9h and 21min.

When are sunrise and sunset in January in Grass Creek?

In January, on the first day of the month, sunrise is at 7:48 am and sunset at 4:47 pm. On the last day of the month, in Grass Creek, sunrise is at 7:32 am and sunset at 5:23 pm MST.

How many hours of sunshine does Grass Creek have in January?

In January, the average sunshine duration in Grass Creek is 6.6h.

What is the month with the lowest UV index in Grass Creek?

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

What is the UV index intensity in January in Grass Creek?

In January, the average daily maximum UV index in Grass Creek, Wyoming, is 2. A UV Index value of 2, and less, symbolizes 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
Grass Creek, WY

Average temperature in January - Grass Creek, WY
  • Average high temperature in January: 29.8°F

The warmest month (with the highest average high temperature) is July (76.1°F).
The month with the lowest average high temperature is December (27.3°F).

  • Average low temperature in January: 14.4°F

The month with the highest average low temperature is July (53.8°F).
The coldest month (with the lowest average low temperature) is December (11.8°F).

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Average pressure in January
Grass Creek, WY

Average pressure in January - Grass Creek, WY
  • Average pressure in January: 30.19"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in January
Grass Creek, WY

Average wind speed in January - Grass Creek, WY
  • Average wind speed in January: 7.9mph

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in January
Grass Creek, WY

Average humidity in January - Grass Creek, WY
  • Average humidity in January: 76%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is July (43%).

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Average rainfall in January
Grass Creek, WY

Average rainfall in January - Grass Creek, WY
  • Average rainfall in January: 0.2"

The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is January (0.2").

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Average rainfall days in January
Grass Creek, WY

Average rainfall days in January - Grass Creek, WY
  • Average rainfall days in January: 1.6 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (1.6 days).

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Average snowfall in January
Grass Creek, WY

Average snowfall in January - Grass Creek, WY
  • Average snowfall in January: 1.57"

The month with the highest snowfall is April (6.3").
The months with the least snowfall are July and August (0").

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Average snowfall days in January
Grass Creek, WY

Average snowfall days in January - Grass Creek, WY
  • Average snowfall days in January: 5.3 days

The month with the highest number of snowfall days is April (9.4 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
Grass Creek, WY

Average daylight in January / Average sunshine in January - Grass Creek, WY
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in January: 6h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 24min).

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Average sunshine days in January
Grass Creek, WY

Average sunshine days in January - Grass Creek, WY
  • Average sunshine days in January: 25 days

The month with the most sunshine days is January (25 days).
The month with the least sunshine days is May (10.2 days).

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Average UV index in January
Grass Creek, WY

Average UV index in January - Grass Creek, WY
  • Average UV index in January: 2

The months with the highest UV index are June and July (UV index 5).
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
Grass Creek, WY

Average cloud cover in January - Grass Creek, WY
  • Average cloud cover in January: 28

The month with the most cloud cover is April (Cloud cover 35).
The months with the least cloud cover are July and September (Cloud cover 17).

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Average visibility in January
Grass Creek, WY

Average visibility in January - Grass Creek, 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).

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Grass Creek, Wyoming, USA

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