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December Weather in Oshkosh, United States

Last updated: June 24, 2025

In Oshkosh, United States, the average temperature in December hovers around 0°C (33°F). During this time, temperatures can swing dramatically, with a minimum of -23°C (-9°F) and a maximum reaching 24°C (75°F). Visitors can expect 17 mm (0.7 in) of precipitation over about 3 days, all while experiencing an average humidity of 78%. Perfect for those who love a varied climate!

December Temperature in Oshkosh

In December in Oshkosh, the average temperature is 0°C (33°F). Maximum temperatures can reach 24°C (75°F), while minimum temperatures can drop as low as -23°C (-9°F). Be prepared for a wide range of temperatures when traveling to Oshkosh this December, ensuring both warm and cold weather gear are packed.

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

The chart illustrates December temperature patterns in Oshkosh, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oshkosh, December typically has an average temperature of 0°C (33°F), with highs reaching up to 24°C (75°F) and lows dropping to around -23°C (-9°F).
JanFebMarAprMayJunJulAugSepOctNovDec292740475771767367484032
Data source: Temperature data for Oshkosh 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 Oshkosh

In Oshkosh in December, the precipitation amount is 17 mm (0.7 in) over the course of 3 days.

December Precipitation Trends in Oshkosh

The chart displays monthly precipitation patterns in Oshkosh, 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 Oshkosh, December typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec1218605213549534732332017
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Oshkosh

In Oshkosh in December humidity is 78%. With an average temperature of 0°C (33°F), this humidity feels like walking through a chilly, damp fog that clings to your skin, making every step a bit heavier and more challenging for traveling.

December Average Humidity in Oshkosh

This chart illustrates the average monthly humidity levels in Oshkosh, 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 Oshkosh is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%80%64%64%76%79%77%79%70%64%75%78%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Oshkosh

In Oshkosh 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 Oshkosh, you can check the information here.

Maximum UV Index Levels in Oshkosh for December

The chart shows the monthly maximum UV Index (UVI) for Oshkosh 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 Oshkosh typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
Data source: Oshkosh 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 Oshkosh Compares to Other Months

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

This table compares monthly weather conditions in Oshkosh, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (30°F)12 mm (0.5 inches)73%moderate
February Weather-3°C (28°F)18 mm (0.7 inches)80%moderate
March Weather4°C (40°F)59 mm (2.3 inches)64%high
April Weather8°C (47°F)52 mm (2.1 inches)64%very high
May Weather14°C (57°F)135 mm (5.3 inches)76%very high
June Weather22°C (71°F)49 mm (1.9 inches)79%extreme
July Weather25°C (76°F)53 mm (2.1 inches)77%extreme
August Weather23°C (73°F)47 mm (1.8 inches)79%very high
September Weather19°C (67°F)32 mm (1.3 inches)70%very high
October Weather9°C (48°F)33 mm (1.3 inches)64%high
November Weather5°C (41°F)20 mm (0.8 inches)75%moderate
December Weather0°C (33°F)17 mm (0.7 inches)78%moderate

Compare Oshkosh's Climate with Cities Worldwide