December Weather in Platteville, United States

Last updated: June 24, 2025

In December, the average temperature in Platteville, United States hovers around 1°C (33°F), with a minimum drop to -18°C (0°F) and an occasional peak of 22°C (72°F). Expect 8 mm (0.3 in) of precipitation spread over 2 days, contributing to an average humidity level of 77%. Embrace the chill and prepare for a blend of crisp air and refreshing moisture!

December Temperature in Platteville

In December in Platteville, the average temperature is 1°C (33°F). Maximum temperatures can reach up to 22°C (72°F), while minimums can drop as low as -18°C (0°F). This stark contrast in temperatures means travelers should pack layers to stay comfortable during their visit.

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

The chart illustrates December temperature patterns in Platteville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Platteville, December typically has an average temperature of 1°C (33°F), with highs reaching up to 22°C (72°F) and lows dropping to around -18°C (0°F).

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

December Precipitation in Platteville

In Platteville in December, the precipitation amount is 8 mm (0.3 in) over the course of 2 days.

December Precipitation Trends in Platteville

The chart displays monthly precipitation patterns in Platteville, 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 Platteville, December typically receives around 8 mm (0.3 inches) of precipitation spread over approximately 2 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 Platteville

In Platteville in December, humidity is 77%. With an average temperature of 1°C (33°F), this humidity feels like an uncomfortable chill that penetrates through layers of clothing, making travel outside feel damp and bone-cold.

December Average Humidity in Platteville

This chart illustrates the average monthly humidity levels in Platteville, 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 Platteville is approximately 77%, 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 Platteville

In Platteville 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 Platteville, you can check the information here.

Maximum UV Index Levels in Platteville for December

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

Data source: Platteville 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 Platteville Compares to Other Months

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

This table compares monthly weather conditions in Platteville, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (31°F)	12 mm (0.5 inches)	72%	moderate
February Weather	0°C (31°F)	13 mm (0.5 inches)	76%	moderate
March Weather	6°C (43°F)	44 mm (1.8 inches)	61%	high
April Weather	10°C (50°F)	34 mm (1.3 inches)	60%	very high
May Weather	15°C (59°F)	91 mm (3.6 inches)	74%	very high
June Weather	22°C (72°F)	30 mm (1.2 inches)	82%	extreme
July Weather	25°C (77°F)	28 mm (1.1 inches)	82%	extreme
August Weather	24°C (75°F)	32 mm (1.3 inches)	84%	very high
September Weather	20°C (68°F)	17 mm (0.6 inches)	75%	very high
October Weather	10°C (50°F)	23 mm (0.9 inches)	73%	high
November Weather	5°C (41°F)	13 mm (0.5 inches)	74%	moderate
December Weather	1°C (33°F)	8 mm (0.3 inches)	77%	moderate