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December Weather in Oskaloosa, United States

Last updated: June 24, 2025

In December, the average temperature in Oskaloosa, United States is a brisk 0°C (32°F). You might experience a chilling minimum of -22°C (-8°F), while the mercury can rise to a comfortable maximum of 23°C (74°F). Expect around 39 mm (1.5 in) of precipitation spread across 5 days, and don't forget your umbrella, as the average humidity is a muggy 83%.

December Temperature in Oskaloosa

In December in Oskaloosa, the average temperature is 0°C (32°F), with maximums reaching 23°C (74°F) and minimums dropping as low as -22°C (-8°F). It's a season of contrasts, perfect for travelers who enjoy a mix of winter activities and milder days.

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

The chart illustrates December temperature patterns in Oskaloosa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oskaloosa, December typically has an average temperature of 0°C (32°F), with highs reaching up to 23°C (74°F) and lows dropping to around -22°C (-8°F).
JanFebMarAprMayJunJulAugSepOctNovDec232541506375777469543932
Data source: Temperature data for Oskaloosa 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 Oskaloosa

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

December Precipitation Trends in Oskaloosa

The chart displays monthly precipitation patterns in Oskaloosa, 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 Oskaloosa, December typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec4649877215513076691221285139
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Oskaloosa

In Oskaloosa in December, humidity is 83%. With an average temperature of 0°C (32°F), this humidity feels like traveling through a thick mist, making every step heavy and the cold pierce even deeper, causing you to constantly seek shelter or warm beverages to counteract the damp chill.

December Average Humidity in Oskaloosa

This chart illustrates the average monthly humidity levels in Oskaloosa, 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 Oskaloosa is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%77%78%77%81%81%77%73%75%85%83%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Oskaloosa

In Oskaloosa 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 Oskaloosa, you can check the information here.

Maximum UV Index Levels in Oskaloosa for December

The chart shows the monthly maximum UV Index (UVI) for Oskaloosa 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 Oskaloosa typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689111198643
Data source: Oskaloosa 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 Oskaloosa Compares to Other Months

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

This table compares monthly weather conditions in Oskaloosa, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)46 mm (1.8 inches)78%moderate
February Weather-4°C (25°F)49 mm (1.9 inches)80%moderate
March Weather5°C (41°F)87 mm (3.4 inches)77%high
April Weather10°C (50°F)72 mm (2.8 inches)77%very high
May Weather17°C (63°F)154 mm (6.1 inches)77%very high
June Weather24°C (75°F)130 mm (5.1 inches)81%extreme
July Weather25°C (78°F)76 mm (3.0 inches)81%extreme
August Weather23°C (75°F)69 mm (2.7 inches)77%very high
September Weather20°C (69°F)122 mm (4.8 inches)73%very high
October Weather12°C (54°F)128 mm (5.0 inches)75%high
November Weather4°C (40°F)51 mm (2.0 inches)85%moderate
December Weather0°C (32°F)39 mm (1.5 inches)83%moderate

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