December Weather in Monona, United States

Last updated: June 24, 2025

In Monona, United States, the average temperature in December hovers around -2°C (29°F). During this time, temperatures can fluctuate significantly, with a minimum low of -23°C (-9°F) and soaring up to a maximum of 20°C (69°F). Expect about 39 mm (1.5 in) of precipitation spread across 6 days, contributing to an average humidity of 82%.

December Temperature in Monona

In December in Monona, the average temperature is -2°C (29°F). Maximums can reach 20°C (69°F), while minimums can drop as low as -23°C (-9°F). Travelers should be prepared for a wide range of temperatures, making it essential to pack for both warmth and mild weather.

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

The chart illustrates December temperature patterns in Monona, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Monona, December typically has an average temperature of -2°C (29°F), with highs reaching up to 20°C (69°F) and lows dropping to around -23°C (-9°F).
JanFebMarAprMayJunJulAugSepOctNovDec202136466071747165503528
Data source: Temperature data for Monona generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Monona

In Monona in December, the precipitation amount is 39 mm (1.5 in), occurring over the course of 6 days.

December Precipitation Trends in Monona

The chart displays monthly precipitation patterns in Monona, 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 Monona, December typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec41536378154134113971211365039
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Monona

In Monona 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 Monona

This chart illustrates the average monthly humidity levels in Monona, 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 Monona is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%84%83%75%79%75%69%74%79%88%82%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Monona

In Monona in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Monona, you can visit Hourly UV Index in Monona.

Maximum UV Index Levels in Monona for December

The chart shows the monthly maximum UV Index (UVI) for Monona 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 Monona typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589101098532
Data source: Monona 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 Monona Compares to Other Months

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

This table compares monthly weather conditions in Monona, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (20°F)41 mm (1.6 inches)84%moderate
February Weather-6°C (21°F)53 mm (2.1 inches)85%moderate
March Weather2°C (36°F)63 mm (2.5 inches)84%moderate
April Weather8°C (46°F)78 mm (3.1 inches)83%very high
May Weather15°C (60°F)154 mm (6.1 inches)75%very high
June Weather22°C (71°F)134 mm (5.3 inches)79%very high
July Weather23°C (75°F)113 mm (4.5 inches)75%very high
August Weather21°C (71°F)97 mm (3.8 inches)69%very high
September Weather18°C (65°F)121 mm (4.7 inches)74%very high
October Weather10°C (50°F)136 mm (5.4 inches)79%moderate
November Weather2°C (36°F)50 mm (2.0 inches)88%moderate
December Weather-2°C (29°F)39 mm (1.5 inches)82%low

Compare Monona's Climate with Cities Worldwide