December Weather in Oelwein, United States

Last updated: June 24, 2025

In Oelwein, United States, the average temperature for December hovers around -2°C (29°F). However, temperatures can vary significantly, with minimums dipping to -22°C (-7°F) and maximums reaching a surprising 21°C (71°F). Expect 36 mm (1.4 in) of precipitation spread over 5 days, contributing to an average humidity of a notable 82%.

December Temperature in Oelwein

In December in Oelwein, the average temperature is -2°C (29°F). Maximum temperatures can reach 21°C (71°F), while minimums can plummet to as low as -22°C (-7°F). Be prepared for a wide range of temperatures and pack accordingly for your trip!

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

The chart illustrates December temperature patterns in Oelwein, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oelwein, December typically has an average temperature of -2°C (29°F), with highs reaching up to 21°C (71°F) and lows dropping to around -22°C (-7°F).

Data source: Temperature data for Oelwein generated using information from the Copernicus Climate Change Service.

December Precipitation in Oelwein

In Oelwein in December, the precipitation amount is 36 mm (1.4 in) over the course of 5 days.

December Precipitation Trends in Oelwein

The chart displays monthly precipitation patterns in Oelwein, 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 Oelwein, December typically receives around 36 mm (1.4 inches) of precipitation spread over approximately 5 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Oelwein

In Oelwein in December, humidity is 82%. With an average temperature of -2°C (29°F), this humidity feels like a frigid chill that seeps into your bones, making travel quite uncomfortable and forcing you to bundle up tightly to ward off the damp cold that lingers in the air.

December Average Humidity in Oelwein

This chart illustrates the average monthly humidity levels in Oelwein, 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 Oelwein is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Oelwein

In Oelwein 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 Oelwein, you can check the information here.

Maximum UV Index Levels in Oelwein for December

The chart shows the monthly maximum UV Index (UVI) for Oelwein 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 Oelwein typically reaches 3, which falls under the moderate exposure category.

Data source: Oelwein 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 Oelwein Compares to Other Months

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

This table compares monthly weather conditions in Oelwein, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	40 mm (1.6 inches)	84%	moderate
February Weather	-6°C (21°F)	52 mm (2.0 inches)	85%	moderate
March Weather	2°C (36°F)	68 mm (2.7 inches)	84%	moderate
April Weather	8°C (46°F)	75 mm (3.0 inches)	83%	very high
May Weather	16°C (60°F)	176 mm (6.9 inches)	75%	very high
June Weather	22°C (72°F)	138 mm (5.4 inches)	79%	extreme
July Weather	23°C (75°F)	106 mm (4.2 inches)	75%	very high
August Weather	21°C (71°F)	102 mm (4.0 inches)	69%	very high
September Weather	18°C (66°F)	129 mm (5.1 inches)	74%	very high
October Weather	10°C (51°F)	137 mm (5.4 inches)	79%	moderate
November Weather	2°C (36°F)	49 mm (1.9 inches)	88%	moderate
December Weather	-2°C (29°F)	36 mm (1.4 inches)	82%	moderate