nomadseason

December Weather in Llano, United States

Last updated: June 24, 2025

In December, the average temperature in Llano, United States is a mild 12°C (54°F). However, temperatures can range from a chilly -4°C (25°F) to a warm 30°C (87°F). Expect approximately 39 mm (1.5 in) of precipitation spread over 5 days, with the average humidity hovering around a significant 87%.

December Temperature in Llano

In December in Llano, the average temperature is 12°C (54°F). Maximums can reach 30°C (87°F), while minimums can dip as low as -4°C (25°F). Travelers should be prepared for a wide range of temperatures during this time.

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

The chart illustrates December temperature patterns in Llano, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Llano, December typically has an average temperature of 12°C (54°F), with highs reaching up to 30°C (87°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec505262687682868679695954
Data source: Temperature data for Llano 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 Llano

In Llano in December, the precipitation amount is 39 mm (1.5 in) spread over a duration of 5 days.

December Precipitation Trends in Llano

The chart displays monthly precipitation patterns in Llano, 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 Llano, December typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec4253688113047405073923139
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Llano

In Llano in December humidity is 87%. With an average temperature of 12°C (54°F), this humidity feels like a damp embrace, making it quite uncomfortable for traveling, as the air feels heavy and can quickly sap your energy as you explore the sights.

December Average Humidity in Llano

This chart illustrates the average monthly humidity levels in Llano, 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 Llano is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%78%77%78%82%78%69%63%66%73%84%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Llano

In Llano 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 Llano for better planning.

Maximum UV Index Levels in Llano for December

The chart shows the monthly maximum UV Index (UVI) for Llano 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 Llano typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111112121110864
Data source: Llano 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 Llano Compares to Other Months

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

This table compares monthly weather conditions in Llano, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)42 mm (1.7 inches)78%moderate
February Weather11°C (52°F)53 mm (2.1 inches)78%high
March Weather17°C (63°F)68 mm (2.7 inches)77%very high
April Weather20°C (68°F)81 mm (3.2 inches)78%extreme
May Weather24°C (76°F)130 mm (5.1 inches)82%extreme
June Weather28°C (82°F)47 mm (1.8 inches)78%extreme
July Weather30°C (86°F)40 mm (1.6 inches)69%extreme
August Weather30°C (86°F)50 mm (2.0 inches)63%extreme
September Weather26°C (80°F)73 mm (2.9 inches)66%very high
October Weather21°C (70°F)92 mm (3.6 inches)73%very high
November Weather15°C (59°F)31 mm (1.2 inches)84%high
December Weather12°C (54°F)39 mm (1.5 inches)87%moderate

Compare Llano's Climate with Cities Worldwide