Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
December is the coldest month, 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).Heat index
For most parts of December, the heat index is estimated at a hot 33°C (91.4°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.Understanding the heat index involves considering values for shaded locales with light wind. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Humidity
The average relative humidity in December is 68%.Rainfall
In San Jerónimo de Juárez, in December, during 3.2 rainfall days, 4mm (0.16") of precipitation is typically accumulated. In San Jerónimo de Juárez, during the entire year, the rain falls for 144.3 days and collects up to 800mm (31.5") of precipitation.Daylight
With an average of 11h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:55 am and sunset at 6:06 pm. On the last day of December, sunrise is at 7:11 am and sunset at 6:19 pm CST.
Sunshine
In December, the average sunshine is 9.9h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.Note: The UV index of 7 during December leads to these advisories:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How hot is December?
What is the average humidity in December?
How much does it rain in December?
What is the month with the shortest days?
How many hours of daylight does San Jerónimo de Juárez have in December?
When is the sunrise / sunset in December in San Jerónimo de Juárez?
How long on average sun shines in December?
When is the highest UV index?
What are the months with the lowest UV index?
How high is the UV index in December?
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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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).
