December Weather in Herald, United States

Last updated: June 24, 2025

In December, the average temperature in Herald, United States hovers around 9°C (49°F). Temperatures can range from a chilly -2°C (29°F) to a warm 23°C (74°F). Expect 108 mm (4.3 in) of precipitation spread over 9 days, contributing to an average humidity of 83%.

December Temperature in Herald

In December in Herald, the average temperature is 9°C (49°F). Maximums can reach 23°C (74°F), and minimums can drop as low as -2°C (29°F). Travelers should be prepared for varying weather conditions, ranging from mild to chilly.

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

The chart illustrates December temperature patterns in Herald, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Herald, December typically has an average temperature of 9°C (49°F), with highs reaching up to 23°C (74°F) and lows dropping to around -2°C (29°F).

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

December Precipitation in Herald

In Herald in December, the precipitation amount is 108 mm (4.3 in) spread over 9 days.

December Precipitation Trends in Herald

The chart displays monthly precipitation patterns in Herald, 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 Herald, December typically receives around 108 mm (4.3 inches) of precipitation spread over approximately 9 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 Herald

In Herald in December, humidity is 83%. With an average temperature of 9°C (49°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities uncomfortable for traveling and requiring extra layers to stay warm and dry.

December Average Humidity in Herald

This chart illustrates the average monthly humidity levels in Herald, 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 Herald is approximately 83%, 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 Herald

In Herald 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 Herald, you can check the information here.

Maximum UV Index Levels in Herald for December

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

Data source: Herald 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 Herald Compares to Other Months

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

This table compares monthly weather conditions in Herald, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	121 mm (4.8 inches)	84%	moderate
February Weather	11°C (52°F)	109 mm (4.3 inches)	84%	moderate
March Weather	13°C (56°F)	104 mm (4.1 inches)	83%	high
April Weather	16°C (62°F)	48 mm (1.9 inches)	81%	very high
May Weather	20°C (68°F)	22 mm (0.9 inches)	74%	very high
June Weather	23°C (74°F)	4 mm (0.1 inches)	64%	extreme
July Weather	24°C (76°F)	0 mm (0.0 inches)	44%	extreme
August Weather	24°C (75°F)	0 mm (0.0 inches)	36%	very high
September Weather	22°C (72°F)	2 mm (0.1 inches)	44%	very high
October Weather	18°C (65°F)	37 mm (1.5 inches)	65%	high
November Weather	13°C (55°F)	57 mm (2.3 inches)	84%	moderate
December Weather	9°C (49°F)	108 mm (4.3 inches)	83%	moderate