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December Weather in Hermann, United States

Last updated: June 24, 2025

In December, the average temperature in Hermann, United States hovers around 4°C (39°F). Temperatures can vary significantly, with a minimum of -16°C (3°F) and a maximum reaching 23°C (74°F). Expect 47 mm (1.9 in) of precipitation over approximately 6 days, contributing to an average humidity level of 86%.

December Temperature in Hermann

In December in Hermann, the average temperature is 4°C (39°F). Maximums can reach 23°C (74°F) and minimums can be as low as -16°C (3°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm and cold conditions.

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

The chart illustrates December temperature patterns in Hermann, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hermann, December typically has an average temperature of 4°C (39°F), with highs reaching up to 23°C (74°F) and lows dropping to around -16°C (3°F).
JanFebMarAprMayJunJulAugSepOctNovDec323546546676797672584439
Data source: Temperature data for Hermann 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 Hermann

In Hermann in December, the precipitation amount is 47 mm (1.9 in) over the course of 6 days.

December Precipitation Trends in Hermann

The chart displays monthly precipitation patterns in Hermann, 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 Hermann, December typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec7069123121158899812857946447
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Hermann

In Hermann in December humidity is 86%. With an average temperature of 4°C (39°F), this humidity feels like a chilly mist enveloping you, making it essential to bundle up while exploring, as each breath comes with a damp chill that can be quite refreshing yet starkly invigorating for travelers.

December Average Humidity in Hermann

This chart illustrates the average monthly humidity levels in Hermann, 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 Hermann is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Hermann

In Hermann 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 Hermann, you can check the information here.

Maximum UV Index Levels in Hermann for December

The chart shows the monthly maximum UV Index (UVI) for Hermann 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 Hermann typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109753
Data source: Hermann 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 Hermann Compares to Other Months

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

This table compares monthly weather conditions in Hermann, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)70 mm (2.8 inches)82%moderate
February Weather2°C (35°F)69 mm (2.7 inches)80%moderate
March Weather8°C (47°F)123 mm (4.9 inches)80%high
April Weather12°C (55°F)121 mm (4.8 inches)80%very high
May Weather19°C (66°F)158 mm (6.2 inches)82%very high
June Weather24°C (76°F)89 mm (3.5 inches)83%extreme
July Weather26°C (80°F)98 mm (3.8 inches)81%extreme
August Weather24°C (76°F)128 mm (5.1 inches)80%very high
September Weather22°C (72°F)57 mm (2.3 inches)76%very high
October Weather15°C (58°F)94 mm (3.7 inches)76%high
November Weather7°C (45°F)64 mm (2.5 inches)85%moderate
December Weather4°C (39°F)47 mm (1.9 inches)86%moderate

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