nomadseason

December Weather in Walnut Grove, United States

Last updated: June 24, 2025

In December, the average temperature in Walnut Grove, United States hovers around 5°C (42°F). Visitors can expect a temperature range from a chilly -13°C (9°F) to a surprisingly warm 24°C (76°F). During this period, precipitation averages 45 mm (1.8 in) over the course of approximately 6 days, contributing to a high average humidity of 87%.

December Temperature in Walnut Grove

In December in Walnut Grove, the average temperature is 5°C (42°F). Maximums can reach 24°C (76°F) and minimums can be as low as -13°C (9°F). Be prepared for a wide range of temperatures, and pack accordingly to enjoy your travels!

December Weather in Walnut Grove: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Walnut Grove, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Walnut Grove, December typically has an average temperature of 5°C (42°F), with highs reaching up to 24°C (76°F) and lows dropping to around -13°C (9°F).
JanFebMarAprMayJunJulAugSepOctNovDec353749566676807773594641
Data source: Temperature data for Walnut Grove 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 Walnut Grove

In Walnut Grove in December, the precipitation amount is 45 mm (1.8 in) over the course of 6 days.

December Precipitation Trends in Walnut Grove

The chart displays monthly precipitation patterns in Walnut Grove, 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 Walnut Grove, December typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec75701331371758095121581266245
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Walnut Grove

In Walnut Grove in December humidity is 87%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and travel less inviting as the air becomes heavy and oppressive.

December Average Humidity in Walnut Grove

This chart illustrates the average monthly humidity levels in Walnut Grove, 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 Walnut Grove is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%76%78%83%83%78%68%64%70%83%87%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Walnut Grove

In Walnut Grove 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 Walnut Grove, you can check the information here.

Maximum UV Index Levels in Walnut Grove for December

The chart shows the monthly maximum UV Index (UVI) for Walnut Grove 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 Walnut Grove typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Walnut Grove 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 Walnut Grove Compares to Other Months

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

This table compares monthly weather conditions in Walnut Grove, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)75 mm (3.0 inches)81%moderate
February Weather3°C (38°F)70 mm (2.8 inches)78%high
March Weather9°C (49°F)133 mm (5.3 inches)76%high
April Weather13°C (56°F)137 mm (5.4 inches)78%very high
May Weather19°C (67°F)175 mm (6.9 inches)83%very high
June Weather25°C (77°F)79 mm (3.1 inches)83%extreme
July Weather27°C (80°F)95 mm (3.7 inches)78%extreme
August Weather25°C (77°F)121 mm (4.8 inches)68%very high
September Weather23°C (73°F)58 mm (2.3 inches)64%very high
October Weather15°C (59°F)126 mm (5.0 inches)70%high
November Weather8°C (47°F)62 mm (2.5 inches)83%moderate
December Weather5°C (42°F)45 mm (1.8 inches)87%moderate

Compare Walnut Grove's Climate with Cities Worldwide