December weather forecast
Calvin, OK

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Weather in December

The first month of the winter, December, is also a frosty month in Calvin, Oklahoma, with an average temperature fluctuating between 49.6°F (9.8°C) and 35.6°F (2°C).

Temperature

Calvin's December weather shows a moderate shift in high-temperatures, falling from November's moderate 60.1°F (15.6°C) to a frosty 49.6°F (9.8°C). December witnesses an average low-temperature hovering around a cold 35.6°F (2°C).

Humidity

In Calvin, the average relative humidity in December is 70%.

Rainfall

In December, in Calvin, the rain falls for 7.7 days. Throughout December, 1.57" (40mm) of precipitation is accumulated. In Calvin, during the entire year, the rain falls for 131 days and collects up to 28.39" (721mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall in Calvin, Oklahoma. In Calvin, in December, during 1 snowfall days, 0.31" (8mm) of snow is typically accumulated. Throughout the year, there are 5.7 snowfall days, and 3.15" (80mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 54min of daylight.
On the first day of December, sunrise is at 7:15 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:23 pm CST.

Sunshine

The month with the least sunshine is December, with an average of 5.7h of sunshine.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.
Note: In December, a regular UV index of 2 translates into these guidelines:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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Frequently asked questions

What is the temperature in December in Calvin?

The high-temperature in Calvin, Oklahoma, during December is 49.6°F (9.8°C) and the low-temperature is 35.6°F (2°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 91.4°F (33°C).

What is the average humidity in December in Calvin?

In December, the average relative humidity in Calvin is 70%.

How much does it rain in Calvin in December?

In Calvin, Oklahoma, in December, during 7.7 rainfall days, 1.57" (40mm) of precipitation is typically accumulated.

How much does it snow in Calvin in December?

In December, in Calvin, it is snowing for 1 days. Throughout December, 0.31" (8mm) of snow is accumulated.

What is the month with the shortest days in Calvin?

The month with the shortest days is December, with an average of 9h and 54min of daylight.

How many hours of daylight does Calvin have in December?

In December, the average day length is 9h and 51min.

When is the sunrise / sunset in December in Calvin?

In December, on the first day of the month, sunrise is at 7:15 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:23 pm CST.

What is the month with the least sunshine in Calvin?

With an average of 5.7h of sunshine, December has the least sunshine of the year.

How long on average sun shines in December in Calvin?

In December, the average sunshine duration in Calvin is 5.7h.

When is the lowest UV index in Calvin?

The month with the lowest UV index is December, with an average maximum UV index of 2.

What is the UV index intensity in December in Calvin?

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes 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 December
Calvin, OK

Average temperature in December - Calvin, OK
  • Average high temperature in December: 49.6°F

The warmest month (with the highest average high temperature) is August (92.1°F).
The month with the lowest average high temperature is January (48.7°F).

  • Average low temperature in December: 35.6°F

The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).

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Average pressure in December
Calvin, OK

Average pressure in December - Calvin, OK
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in December
Calvin, OK

Average wind speed in December - Calvin, OK
  • Average wind speed in December: 9.6mph

The windiest month (with the highest average wind speed) is March (11mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).

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Average humidity in December
Calvin, OK

Average humidity in December - Calvin, OK
  • Average humidity in December: 70%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is August (64%).

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Average rainfall in December
Calvin, OK

Average rainfall in December - Calvin, OK
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is February (1.42").

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Average rainfall days in December
Calvin, OK

Average rainfall days in December - Calvin, OK
  • Average rainfall days in December: 7.7 days

The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (6.7 days).

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Average snowfall in December
Calvin, OK

Average snowfall in December - Calvin, OK
  • Average snowfall in December: 0.31"

The month with the highest snowfall is February (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Calvin, OK

Average snowfall days in December - Calvin, OK
  • Average snowfall days in December: 1 days

The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Calvin, OK

Average daylight in December / Average sunshine in December - Calvin, OK
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 5h and 4min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in December
Calvin, OK

Average sunshine days in December - Calvin, OK
  • Average sunshine days in December: 20.9 days

The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is May (14.5 days).

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Average UV index in December
Calvin, OK

Average UV index in December - Calvin, OK
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in December
Calvin, OK

Average cloud cover in December - Calvin, OK
  • Average cloud cover in December: 35

The months with the most cloud cover are February and March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in December
Calvin, OK

Average visibility in December - Calvin, OK
  • 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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Calvin, Oklahoma, USA

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