December weather forecast
Grover, CO

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Weather in December

The first month of the winter, December, is still a cold month in Grover, Colorado, with an average temperature ranging between min 20.3°F (-6.5°C) and max 38.3°F (3.5°C).

Temperature

The coldest month is December, with an average high-temperature of 38.3°F (3.5°C) and an average low-temperature of 20.3°F (-6.5°C).

Humidity

With an average relative humidity of 64%, December is the most humid month.

Rainfall

The months with the least rainfall in Grover are January and December Rain falls for 3.8 days and accumulates 0.31" (8mm) of rain.

Snowfall

January through May, October through December are months with snowfall in Grover. In December, it is snowing for 6.6 days. Throughout December, 1.93" (49mm) of snow is accumulated. In Grover, Colorado, during the entire year, snow falls for 39.6 days and aggregates up to 21.26" (540mm) of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:02 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:39 pm MST.

Sunshine

In Grover, the average sunshine in December is 6.7h.

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 of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 2 during December translates into the following directions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

What part of the year is the coldest in Grover?

Grover, Colorado, witnesses the coldest weather in December, with temperatures averaging a high of 38.3°F (3.5°C) and a low of 20.3°F (-6.5°C).

Is it cold in Grover during December?

An average high-temperature, in December, in Grover, is 38.3°F (3.5°C) and the average low-temperature is 20.3°F (-6.5°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 87.8°F (31°C).

What is the most humid month in Grover?

The most humid month in Grover, Colorado, is December, with an average relative humidity of 64%.

What is the average humidity in December in Grover?

In December, the average relative humidity is 64%.

What is the driest month in Grover?

January and December are months with the least rain in Grover, Colorado, when the rain falls for 3.8 days and typically aggregates up to 0.31" (8mm) of rain.

How many days does it rain in December in Grover?

In Grover, in December, during 3.8 rainfall days, 0.31" (8mm) of precipitation is typically accumulated.

How much does it snow in Grover in December?

In Grover, in December, snow falls for 6.6 days, with typically accumulated 1.93" (49mm) of snow.

What is the month with the shortest days in Grover?

The month with the shortest days in Grover, Colorado, is December, with an average of 9h and 18min of daylight.

How many hours of daylight does Grover have in December?

In December, the average day length in Grover, Colorado, is 9h and 18min.

When is the sunrise / sunset in December in Grover?

On the first day of December in Grover, sunrise is at 7:02 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:39 pm MST.

How many hours of sunshine does Grover have in December?

In Grover, the average sunshine duration in December is 6.7h.

When is the lowest UV index in Grover?

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

How high is the UV index in December in Grover?

The average daily maximum UV index in December in Grover is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability 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 December
Grover, CO

Average temperature in December - Grover, CO
  • Average high temperature in December: 38.3°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (38.3°F).

  • Average low temperature in December: 20.3°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (20.3°F).

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Average pressure in December
Grover, CO

Average pressure in December - Grover, CO
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in December
Grover, CO

Average wind speed in December - Grover, CO
  • Average wind speed in December: 6.4mph

The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in December
Grover, CO

Average humidity in December - Grover, CO
  • Average humidity in December: 64%

The month with the highest relative humidity is December (64%).
The months with the lowest relative humidity are August and September (44%).

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Average rainfall in December
Grover, CO

Average rainfall in December - Grover, CO
  • Average rainfall in December: 0.31"

The wettest month (with the highest rainfall) is May (2.68").
The driest months (with the least rainfall) are January and December (0.31").

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Average rainfall days in December
Grover, CO

Average rainfall days in December - Grover, CO
  • Average rainfall days in December: 3.8 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (2.9 days).

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Average snowfall in December
Grover, CO

Average snowfall in December - Grover, CO
  • Average snowfall in December: 1.93"

The month with the highest snowfall is April (3.23").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Grover, CO

Average snowfall days in December - Grover, CO
  • Average snowfall days in December: 6.6 days

The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in December /
Average sunshine in December
Grover, CO

Average daylight in December / Average sunshine in December - Grover, CO
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 6h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).

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Average sunshine days in December
Grover, CO

Average sunshine days in December - Grover, CO
  • Average sunshine days in December: 23.3 days

The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is May (10.9 days).

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Average UV index in December
Grover, CO

Average UV index in December - Grover, CO
  • Average UV index in December: 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).

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Average cloud cover in December
Grover, CO

Average cloud cover in December - Grover, CO
  • Average cloud cover in December: 27

The months with the most cloud cover are February and April (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 17).

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Average visibility in December
Grover, CO

Average visibility in December - Grover, CO
  • Average visibility in December: 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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Grover, Colorado, USA

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