December Weather in Ilchester, United States

Last updated: June 24, 2025

In December, the average temperature in Ilchester, United States hovers around 4°C (40°F), with a minimum chilling down to -11°C (13°F) and a maximum reaching a mild 19°C (67°F). Expect 99 mm (3.9 in) of precipitation over 9 days, contributing to an average humidity of 84%. Prepare for a mix of cold days and damp weather!

December Temperature in Ilchester

In December in Ilchester, the average temperature is 4°C (40°F). Maximums can reach 19°C (67°F), while minimums can dip as low as -11°C (13°F). Be sure to pack layers to comfortably navigate the chilly days and warmer afternoons during your travels.

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

The chart illustrates December temperature patterns in Ilchester, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ilchester, December typically has an average temperature of 4°C (40°F), with highs reaching up to 19°C (67°F) and lows dropping to around -11°C (13°F).

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

December Precipitation in Ilchester

In Ilchester in December, the precipitation amount is 99 mm (3.9 in) during a span of 9 days.

December Precipitation Trends in Ilchester

The chart displays monthly precipitation patterns in Ilchester, 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 Ilchester, December typically receives around 99 mm (3.9 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 Ilchester

In Ilchester in December, humidity is 84%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and requiring extra layers to stay warm and dry while traveling.

December Average Humidity in Ilchester

This chart illustrates the average monthly humidity levels in Ilchester, 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 Ilchester 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 Ilchester

In Ilchester 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 Ilchester, you can check the information here.

Maximum UV Index Levels in Ilchester for December

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

Data source: Ilchester 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 Ilchester Compares to Other Months

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

This table compares monthly weather conditions in Ilchester, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (36°F)	62 mm (2.4 inches)	84%	moderate
February Weather	4°C (40°F)	101 mm (4.0 inches)	83%	moderate
March Weather	7°C (46°F)	90 mm (3.5 inches)	83%	high
April Weather	13°C (56°F)	103 mm (4.1 inches)	81%	very high
May Weather	18°C (65°F)	142 mm (5.6 inches)	78%	very high
June Weather	23°C (75°F)	122 mm (4.8 inches)	79%	very high
July Weather	26°C (80°F)	168 mm (6.6 inches)	74%	very high
August Weather	25°C (77°F)	150 mm (5.9 inches)	72%	very high
September Weather	22°C (71°F)	106 mm (4.2 inches)	75%	very high
October Weather	16°C (62°F)	111 mm (4.4 inches)	81%	high
November Weather	8°C (47°F)	83 mm (3.3 inches)	85%	moderate
December Weather	4°C (40°F)	99 mm (3.9 inches)	84%	moderate