nomadseason

December Weather in Calera, United States

Last updated: June 24, 2025

In December, the average temperature in Calera, United States hovers around 9°C (49°F). The weather can be quite variable, with minimums dipping to -5°C (23°F) and maximums reaching up to 25°C (77°F). Be prepared for some moisture, as precipitation totals about 69 mm (2.7 in) over the course of 7 days. With an average humidity of 87%, a light jacket might be a wise choice!

December Temperature in Calera

In December in Calera, the average temperature is 9°C (49°F). The maximum can reach 25°C (77°F) and the minimum can be as low as -5°C (23°F). Pack for a range of temperatures to ensure a comfortable and enjoyable travel experience.

December Weather in Calera: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Calera, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Calera, December typically has an average temperature of 9°C (49°F), with highs reaching up to 25°C (77°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec444658637280848377655449
Data source: Temperature data for Calera generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Calera

In Calera in December, the precipitation amount is 69 mm (2.7 in) over the course of 7 days.

December Precipitation Trends in Calera

The chart displays monthly precipitation patterns in Calera, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Calera, December typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec65961181201481035797911605969
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Calera

In Calera in December humidity is 87%. With an average temperature of 9°C (49°F), this humidity feels like a damp blanket wrapping around you, making travel uncomfortable and leaving you yearning for a dry breeze to refresh your spirit.

December Average Humidity in Calera

This chart illustrates the average monthly humidity levels in Calera, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Calera is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%78%78%81%78%73%66%65%72%82%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Calera

In Calera in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Calera for better planning.

Maximum UV Index Levels in Calera for December

The chart shows the monthly maximum UV Index (UVI) for Calera in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Calera typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101011111010864
Data source: Calera December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Calera Compares to Other Months

Weather in Calera varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Calera, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Calera, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (44°F)65 mm (2.5 inches)80%moderate
February Weather8°C (46°F)96 mm (3.8 inches)79%high
March Weather14°C (58°F)118 mm (4.6 inches)78%very high
April Weather17°C (63°F)120 mm (4.7 inches)78%very high
May Weather22°C (73°F)148 mm (5.8 inches)81%very high
June Weather27°C (80°F)103 mm (4.1 inches)78%extreme
July Weather29°C (84°F)57 mm (2.2 inches)73%extreme
August Weather28°C (83°F)97 mm (3.8 inches)66%very high
September Weather25°C (78°F)91 mm (3.6 inches)65%very high
October Weather19°C (66°F)160 mm (6.3 inches)72%very high
November Weather12°C (54°F)59 mm (2.3 inches)82%high
December Weather9°C (49°F)69 mm (2.7 inches)87%moderate

Compare Calera's Climate with Cities Worldwide