December Weather in Greenfield, United States

Last updated: June 24, 2025

In December, the average temperature in Greenfield, United States hovers around -5°C (23°F). Expect chilly conditions, with minimums plunging to -26°C (-14°F) and maximums reaching up to 13°C (55°F). During this time, precipitation typically amounts to 44 mm (1.7 in) spread over 6 days, contributing to an average humidity level of 84%.

December Temperature in Greenfield

In December in Greenfield, the average temperature is -5°C (23°F). Maximum temperatures can reach 13°C (55°F), while minimums can drop as low as -26°C (-14°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates December temperature patterns in Greenfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greenfield, December typically has an average temperature of -5°C (23°F), with highs reaching up to 13°C (55°F) and lows dropping to around -26°C (-14°F).

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

December Precipitation in Greenfield

In Greenfield in December, the total precipitation amount is 44 mm (1.7 in) spread over 6 days.

December Precipitation Trends in Greenfield

The chart displays monthly precipitation patterns in Greenfield, 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 Greenfield, December typically receives around 44 mm (1.7 inches) of precipitation spread over approximately 6 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 Greenfield

In Greenfield in December, humidity is 84%. With an average temperature of -5°C (23°F), this humidity feels like an icy blanket wrapping around you, making the cold air bite even deeper and turning travel into a brisk, challenging adventure where each breath comes with a frosty reminder of the chill.

December Average Humidity in Greenfield

This chart illustrates the average monthly humidity levels in Greenfield, 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 Greenfield is approximately 84%, 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 Greenfield

In Greenfield 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 Greenfield, you can visit Hourly UV Index in Greenfield.

Maximum UV Index Levels in Greenfield for December

The chart shows the monthly maximum UV Index (UVI) for Greenfield 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 Greenfield typically reaches 2, which falls under the low exposure category.

Data source: Greenfield 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 Greenfield Compares to Other Months

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

This table compares monthly weather conditions in Greenfield, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (16°F)	25 mm (1.0 inches)	87%	low
February Weather	-9°C (17°F)	29 mm (1.2 inches)	90%	moderate
March Weather	0°C (33°F)	54 mm (2.1 inches)	85%	moderate
April Weather	6°C (43°F)	83 mm (3.3 inches)	84%	high
May Weather	15°C (59°F)	112 mm (4.4 inches)	78%	very high
June Weather	22°C (72°F)	83 mm (3.3 inches)	80%	very high
July Weather	24°C (75°F)	96 mm (3.8 inches)	81%	very high
August Weather	21°C (71°F)	152 mm (6.0 inches)	81%	very high
September Weather	18°C (64°F)	113 mm (4.4 inches)	81%	high
October Weather	9°C (48°F)	98 mm (3.8 inches)	84%	moderate
November Weather	1°C (33°F)	32 mm (1.3 inches)	88%	moderate
December Weather	-5°C (23°F)	44 mm (1.7 inches)	84%	low