December weather forecast
San Jerónimo de Juárez, Mexico

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Weather in December

The first month of the winter, December, is also a moderately hot month in San Jerónimo de Juárez, Mexico, with an average temperature fluctuating between 22.9°C (73.2°F) and 29.3°C (84.7°F).

Temperature

The coldest period is December, when temperatures fluctuate between an average high of 29.3°C (84.7°F) and a low of 22.9°C (73.2°F).

Heat index

December's mean heat index is estimated at a tropical 33°C (91.4°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.

Humidity

In December, the average relative humidity is 68%.

Rainfall

In December, in San Jerónimo de Juárez, the rain falls for 3.2 days. Throughout December, 4mm (0.16") of precipitation is accumulated. Throughout the year, there are 144.3 rainfall days, and 800mm (31.5") of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 11h and 6min of daylight.
On the first day of December in San Jerónimo de Juárez, sunrise is at 6:55 am and sunset at 6:06 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:19 pm CST.

Sunshine

In December, the average sunshine is 9.9h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: In December, a regular UV index of 7 translates into these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Updated: Feb 8, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the coldest time of year in San Jerónimo de Juárez?

December is the coldest month in San Jerónimo de Juárez, Mexico, with the temperature often reaching an average high of 29.3°C (84.7°F) and an average low of 22.9°C (73.2°F).

How hot does it get in San Jerónimo de Juárez in December?

The average high-temperature and low-temperature in San Jerónimo de Juárez, Mexico, during December are 29.3°C (84.7°F) and 22.9°C (73.2°F) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in December is estimated at 33°C (91.4°F).

What is the average humidity in December in San Jerónimo de Juárez?

The average relative humidity in December in San Jerónimo de Juárez is 68%.

How many days does it rain in December in San Jerónimo de Juárez?

In December, in San Jerónimo de Juárez, the rain falls for 3.2 days. Throughout December, 4mm (0.16") of precipitation is accumulated.

What is the month with the shortest days in San Jerónimo de Juárez?

With an average of 11h and 6min of daylight, December has the shortest days of the year in San Jerónimo de Juárez, Mexico.

What is the average length of the day in December in San Jerónimo de Juárez?

In San Jerónimo de Juárez, the average day length in December is 11h and 8min.

What time are sunrise and sunset in December in San Jerónimo de Juárez?

In December, on the first day of the month, sunrise is at 6:55 am and sunset at 6:06 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:19 pm CST.

How many hours of sunshine does San Jerónimo de Juárez have in December?

In San Jerónimo de Juárez, the average sunshine duration in December is 9.9h.

When is the highest UV index in San Jerónimo de Juárez?

January through December, with an average maximum UV index of 7, are months with the highest UV index in San Jerónimo de Juárez, Mexico.

When is the lowest UV index in San Jerónimo de Juárez?

January through December, with an average maximum UV index of 7, are months with the lowest UV index in San Jerónimo de Juárez, Mexico.

What is the UV index reading in December in San Jerónimo de Juárez?

The average daily maximum UV index in December in San Jerónimo de Juárez is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.

Average temperature in December
San Jerónimo de Juárez, Mexico

Average temperature in December - San Jerónimo de Juárez, Mexico
  • Average high temperature in December: 29.3°C

The warmest month (with the highest average high temperature) is May (31.3°C).
The month with the lowest average high temperature is December (29.3°C).

  • Average low temperature in December: 22.9°C

The month with the highest average low temperature is June (25.3°C).
The coldest months (with the lowest average low temperature) are January and February (22.5°C).

Average pressure in December
San Jerónimo de Juárez, Mexico

Average pressure in December - San Jerónimo de Juárez, Mexico
  • Average pressure in December: 1012.7mbar

The month with the highest atmospheric pressure is January (1013.2mbar).
The month with the lowest atmospheric pressure is May (1010.7mbar).

Average wind speed in December
San Jerónimo de Juárez, Mexico

Average wind speed in December - San Jerónimo de Juárez, Mexico
  • Average wind speed in December: 7.6km/h

The windiest month (with the highest average wind speed) is June (9.4km/h).
The calmest month (with the lowest average wind speed) is December (7.6km/h).

Average humidity in December
San Jerónimo de Juárez, Mexico

Average humidity in December - San Jerónimo de Juárez, Mexico
  • Average humidity in December: 68%

The months with the highest relative humidity are September and October (77%).
The months with the lowest relative humidity are March and April (62%).

Average rainfall in December
San Jerónimo de Juárez, Mexico

Average rainfall in December - San Jerónimo de Juárez, Mexico
  • Average rainfall in December: 4mm

The wettest month (with the highest rainfall) is September (225mm).
The driest month (with the least rainfall) is April (0mm).

Average rainfall days in December
San Jerónimo de Juárez, Mexico

Average rainfall days in December - San Jerónimo de Juárez, Mexico
  • Average rainfall days in December: 3.2 days

The month with the highest number of rainy days is September (25.8 days).
The month with the least rainy days is February (0.9 days).

Average daylight in December /
Average sunshine in December
San Jerónimo de Juárez, Mexico

Average daylight in December / Average sunshine in December - San Jerónimo de Juárez, Mexico
  • Average daylight in December: 11h and 1min

The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 6min).

  • Average sunshine in December: 9h and 5min

The months with the most sunshine are March and April (Average sunshine: 10h and 0min).
The month with the least sunshine is September (Average sunshine: 8h and 48min).

Average sunshine days in December
San Jerónimo de Juárez, Mexico

Average sunshine days in December - San Jerónimo de Juárez, Mexico
  • Average sunshine days in December: 26.5 days

The month with the most sunshine days is March (29.9 days).
The month with the least sunshine days is September (3.2 days).

Average UV index in December
San Jerónimo de Juárez, Mexico

Average UV index in December - San Jerónimo de Juárez, Mexico
  • Average UV index in December: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in December
San Jerónimo de Juárez, Mexico

Average cloud cover in December - San Jerónimo de Juárez, Mexico
  • Average cloud cover in December: 9

The month with the most cloud cover is September (Cloud cover 36).
The months with the least cloud cover are March and April (Cloud cover 7).

Average visibility in December
San Jerónimo de Juárez, Mexico

Average visibility in December - San Jerónimo de Juárez, Mexico
  • Average visibility in December: 10km

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

San Jerónimo de Juárez, Mexico

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