December weather forecast
Montecillo, Mexico

December

Weather in December

The first month of the winter, December, is still a refreshing month in Montecillo, Mexico, with an average temperature fluctuating between 19.5°C (67.1°F) and 7.4°C (45.3°F).

Temperature

December's climate shows a minor adjustment in average high-temperatures to a still comfortable 19.5°C (67.1°F) from November's 19.6°C (67.3°F). Montecillo sees a consistent average low-temperature of 7.4°C (45.3°F) in December, indicating a substantial decrease from the day's temperature.

Humidity

The average relative humidity in December is 57%.

Rainfall

The month with the least rainfall is December, when the rain falls for 3.7 days and typically collects 4mm (0.16") of precipitation.

Daylight

With an average of 11h and 0min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 6:53 am and sunset at 5:56 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:08 pm CST.

Sunshine

The average sunshine in December is 8.7h.

UV index

The months with the lowest UV index are January, June through December, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high UV index of 4 in December translates into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.

Frequently asked questions

What are December temperatures?
In December, the average high-temperature and low-temperature are 19.5°C (67.1°F) and 7.4°C (45.3°F) respectively.
What is the average humidity in December?
The average relative humidity in December is 57%.
What is the driest month?
The month with the least rainfall is December, when the rain falls for 3.7 days and typically collects 4mm (0.16") of precipitation.
How many days does it rain in December?
In Montecillo, during December, the rain falls for 3.7 days and regularly aggregates up to 4mm (0.16") of precipitation.
What is the month with the shortest days?
With an average of 11h and 0min of daylight, December has the shortest days of the year.
What is the average length of the day in December?
In Montecillo, the average day length in December is 10h and 59min.
When is the sunrise / sunset in December in Montecillo?
On the first day of December, sunrise is at 6:53 am and sunset at 5:56 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:08 pm CST.
How long on average sun shines in December?
The average sunshine duration in December is 8.7h.
When is the lowest UV index?
The months with the lowest UV index are January, June through December, with an average maximum UV index of 4.
What is the UV index intensity in December in Montecillo?
The average daily maximum UV index in December is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Montecillo, Mexico
  • Average high temperature in December: 19.5°C

The warmest month (with the highest average high temperature) is May (25.3°C).
The month with the lowest average high temperature is January (18.9°C).

  • Average low temperature in December: 7.4°C

The month with the highest average low temperature is May (12.8°C).
The coldest month (with the lowest average low temperature) is January (6.5°C).

Average pressure in December
Montecillo, Mexico
  • Average pressure in December: 1017.9mbar

The month with the highest atmospheric pressure is January (1018.6mbar).
The month with the lowest atmospheric pressure is May (1014.2mbar).

Average wind speed in December
Montecillo, Mexico
  • Average wind speed in December: 6.9km/h

The windiest months (with the highest average wind speed) are February, March and April (8km/h).
The calmest month (with the lowest average wind speed) is July (6.1km/h).

Average humidity in December
Montecillo, Mexico
  • Average humidity in December: 57%

The month with the highest relative humidity is September (77%).
The month with the lowest relative humidity is April (42%).

Average rainfall in December
Montecillo, Mexico
  • Average rainfall in December: 4mm

The wettest month (with the highest rainfall) is August (125mm).
The driest month (with the least rainfall) is December (4mm).

Average rainfall days in December
Montecillo, Mexico
  • Average rainfall days in December: 3.7 days

The month with the highest number of rainy days is August (24.4 days).
The month with the least rainy days is December (3.7 days).

Average daylight in December /
Average sunshine in December
Montecillo, Mexico
  • Average daylight in December: 11h and 0min

The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).

  • Average sunshine in December: 8h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 54min).
The month with the least sunshine is November (Average sunshine: 7h and 42min).

Average sunshine days in December
Montecillo, Mexico
  • Average sunshine days in December: 26.1 days

The month with the most sunshine days is December (26.1 days).
The month with the least sunshine days is September (3.2 days).

Average UV index in December
Montecillo, Mexico
  • Average UV index in December: 4

The months with the highest UV index are February, March, April and May (UV index 5).
The months with the lowest UV index are January, June, July, August, September, October, November and December (UV index 4).

Average cloud cover in December
Montecillo, Mexico
  • Average cloud cover in December: 11

The month with the most cloud cover is July (Cloud cover 38).
The months with the least cloud cover are February and December (Cloud cover 11).

Average visibility in December
Montecillo, Mexico
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May and December (10km).
The months with the lowest visibility are July, August and September (8km).

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