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December Weather in Kellyville, United States

Last updated: June 24, 2025

In December, the average temperature in Kellyville, United States hovers around 7°C (44°F), with a range that can dip to a chilly -8°C (17°F) and occasionally rise to a warm 26°C (78°F). Expect 40 mm (1.6 in) of precipitation over approximately 5 days, contributing to a high average humidity of 87%. Prepare accordingly for a blend of cool and wet days!

December Temperature in Kellyville

In December, in Kellyville, the average temperature is 7°C (44°F). The maximum can reach 26°C (78°F), while the minimum can drop as low as -8°C (17°F). This range makes Kellyville a destination suitable for those who enjoy a mix of mild and chilly weather, so pack accordingly!

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

The chart illustrates December temperature patterns in Kellyville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kellyville, December typically has an average temperature of 7°C (44°F), with highs reaching up to 26°C (78°F) and lows dropping to around -8°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec394154597079828076625044
Data source: Temperature data for Kellyville generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Kellyville

In Kellyville in December, the precipitation amount is 40 mm (1.6 in) over the course of 5 days.

December Precipitation Trends in Kellyville

The chart displays monthly precipitation patterns in Kellyville, 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 Kellyville, December typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec72641041501699895116901314540
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Kellyville

In Kellyville in December, humidity is 87%. With an average temperature of 7°C (44°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and requiring travelers to layer up to stay warm and dry.

December Average Humidity in Kellyville

This chart illustrates the average monthly humidity levels in Kellyville, 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 Kellyville is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%78%75%75%83%82%78%68%64%71%82%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Kellyville

In Kellyville in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Kellyville, you can check the information here.

Maximum UV Index Levels in Kellyville for December

The chart shows the monthly maximum UV Index (UVI) for Kellyville 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 Kellyville typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46710101111109753
Data source: Kellyville 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 Kellyville Compares to Other Months

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

This table compares monthly weather conditions in Kellyville, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)72 mm (2.8 inches)79%moderate
February Weather5°C (41°F)64 mm (2.5 inches)78%high
March Weather12°C (54°F)104 mm (4.1 inches)75%high
April Weather15°C (59°F)150 mm (5.9 inches)75%very high
May Weather21°C (70°F)169 mm (6.6 inches)83%very high
June Weather26°C (79°F)98 mm (3.9 inches)81%extreme
July Weather28°C (83°F)95 mm (3.8 inches)78%extreme
August Weather27°C (81°F)116 mm (4.6 inches)68%very high
September Weather24°C (76°F)90 mm (3.6 inches)64%very high
October Weather17°C (62°F)131 mm (5.2 inches)71%high
November Weather10°C (50°F)45 mm (1.8 inches)82%moderate
December Weather7°C (44°F)40 mm (1.6 inches)87%moderate

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