December weather forecastValle de Chalco, Mexico
December
Weather in December
December culminates the weather phenomenon of Valle de Chalco, Mexico, into a notably calm period. The primary attribute characterizing December's weather includes the low average rainfall, which is a mere 5mm (0.2"). This substantial reduction results in the driest month of the year, creating a stark contrast from the heavy rains of the monsoon months. Clear skies dominate most of the month, ensuring hardly any hindrance to visibility. This month also brings with it the shortest daylight hours, aligning effectively with the traditional year-end climate in the region.Temperature
December reports an average high-temperature of an enjoyable 19.8°C (67.6°F), slightly varied from November's 20°C (68°F). In Valle de Chalco, a significant divergence from daytime highs is recorded, with average lows of 7.3°C (45.1°F) during December nights.Humidity
The average relative humidity in December in Valle de Chalco is 59%.Rainfall
The month with the least rainfall in Valle de Chalco is December, when the rain falls for 4.3 days and typically collects 5mm (0.2") of precipitation.Daylight
The month with the shortest days in Valle de Chalco is December, with an average of 11h and 0min of daylight.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 in Valle de Chalco is 8.8h.UV index
The months with the lowest UV index in Valle de Chalco are January, August through December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 4 in December transforms into the following instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Valle de Chalco, Mexico
- Average high temperature in December: 19.8°C
The warmest month (with the highest average high temperature) is April (25.3°C).
The month with the lowest average high temperature is January (19.3°C).
- Average low temperature in December: 7.3°C
The month with the highest average low temperature is May (13°C).
The coldest month (with the lowest average low temperature) is January (6.8°C).
Average pressure in December
Valle de Chalco, Mexico
- Average pressure in December: 1017.8mbar
The month with the highest atmospheric pressure is January (1018.4mbar).
The month with the lowest atmospheric pressure is May (1014.2mbar).
Average wind speed in December
Valle de Chalco, Mexico
- Average wind speed in December: 6.1km/h
The windiest months (with the highest average wind speed) are March and April (6.8km/h).
The calmest month (with the lowest average wind speed) is July (4.8km/h).
Average humidity in December
Valle de Chalco, Mexico
- Average humidity in December: 59%
The month with the highest relative humidity is September (80%).
The month with the lowest relative humidity is April (43%).
Average rainfall in December
Valle de Chalco, Mexico
- Average rainfall in December: 5mm
The wettest month (with the highest rainfall) is July (230mm).
The driest month (with the least rainfall) is December (5mm).
Average rainfall days in December
Valle de Chalco, Mexico
- Average rainfall days in December: 4.3 days
The months with the highest number of rainy days are July and August (29.7 days).
The month with the least rainy days is December (4.3 days).
Average daylight in December /
Average sunshine in December
Valle de Chalco, 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 48min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 7h and 42min).
Average sunshine days in December
Valle de Chalco, Mexico
- Average sunshine days in December: 24.9 days
The month with the most sunshine days is December (24.9 days).
The months with the least sunshine days are July and August (0.5 days).
Average UV index in December
Valle de Chalco, Mexico
- Average UV index in December: 4
The months with the highest UV index are February, March, April, May, June and July (UV index 5).
The months with the lowest UV index are January, August, September, October, November and December (UV index 4).
Average cloud cover in December
Valle de Chalco, Mexico
- Average cloud cover in December: 10
The months with the most cloud cover are July and September (Cloud cover 37).
The months with the least cloud cover are February and December (Cloud cover 10).
Average visibility in December
Valle de Chalco, Mexico
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, November and December (10km).
The months with the lowest visibility are July, August and September (8km).
