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December Weather in Smithville, United States

Last updated: June 24, 2025

In December, the average temperature in Smithville, United States hovers around 2°C (37°F), with a notable range where the minimum dips to -20°C (-3°F) and the maximum can reach up to 23°C (73°F). Expect about 36 mm (1.4 in) of precipitation spread over 4 days, alongside a high average humidity of 86%.

December Temperature in Smithville

In December in Smithville, the average temperature is 2°C (37°F), with maximums reaching 23°C (73°F) and minimums plummeting to as low as -20°C (-3°F). Be prepared for a wide range of weather conditions if you plan to travel during this month.

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

The chart illustrates December temperature patterns in Smithville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Smithville, December typically has an average temperature of 2°C (37°F), with highs reaching up to 23°C (73°F) and lows dropping to around -20°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec293145536577797671564336
Data source: Temperature data for Smithville 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 Smithville

In Smithville in December, the precipitation amount is 36 mm (1.4 in) over the course of 4 days.

December Precipitation Trends in Smithville

The chart displays monthly precipitation patterns in Smithville, 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 Smithville, December typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec5237938220511697107761235036
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Smithville

In Smithville in December, humidity is 86%. With an average temperature of 2°C (37°F), this humidity feels like a chilly dampness that clings to your clothes and makes outdoor activities quite uncomfortable for traveling.

December Average Humidity in Smithville

This chart illustrates the average monthly humidity levels in Smithville, 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 Smithville is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%75%77%82%83%81%78%72%72%84%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Smithville

In Smithville 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 Smithville, you can check the information here.

Maximum UV Index Levels in Smithville for December

The chart shows the monthly maximum UV Index (UVI) for Smithville 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 Smithville typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Smithville 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 Smithville Compares to Other Months

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

This table compares monthly weather conditions in Smithville, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)52 mm (2.0 inches)80%moderate
February Weather0°C (32°F)37 mm (1.4 inches)78%moderate
March Weather7°C (45°F)93 mm (3.7 inches)75%high
April Weather12°C (53°F)82 mm (3.2 inches)77%very high
May Weather19°C (66°F)205 mm (8.1 inches)82%very high
June Weather25°C (77°F)116 mm (4.6 inches)83%extreme
July Weather26°C (80°F)97 mm (3.8 inches)81%extreme
August Weather25°C (76°F)106 mm (4.2 inches)78%very high
September Weather22°C (71°F)76 mm (3.0 inches)72%very high
October Weather13°C (56°F)123 mm (4.8 inches)72%high
November Weather6°C (43°F)50 mm (2.0 inches)84%moderate
December Weather2°C (37°F)36 mm (1.4 inches)86%moderate

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