December Weather in Ione, United States

Last updated: June 24, 2025

In December, the average temperature in Ione, United States hovers around 9°C (48°F), with a minimum of -1°C (30°F) and a maximum reaching 22°C (72°F). During this period, expect 120 mm (4.7 in) of precipitation spread over 9 days, contributing to an average humidity level of 83%.

December Temperature in Ione

In December in Ione, the average temperature is 9°C (48°F). Maximums can reach 22°C (72°F), and minimums can drop as low as -1°C (30°F). Be prepared for a range of temperatures when traveling during this month.

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

The chart illustrates December temperature patterns in Ione, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ione, December typically has an average temperature of 9°C (48°F), with highs reaching up to 22°C (72°F) and lows dropping to around -1°C (30°F).

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

December Precipitation in Ione

In Ione in December, the precipitation amount is 120 mm (4.7 in) over the course of 9 days.

December Precipitation Trends in Ione

The chart displays monthly precipitation patterns in Ione, 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 Ione, December typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Ione

In Ione in December humidity is 83%. With an average temperature of 9°C (48°F), this humidity feels like an enveloping blanket, making outdoor activities quite uncomfortable and encouraging travelers to seek shelter or shade frequently.

December Average Humidity in Ione

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

In Ione 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 Ione, you can check the information here.

Maximum UV Index Levels in Ione for December

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

Data source: Ione 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 Ione Compares to Other Months

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

This table compares monthly weather conditions in Ione, 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 (49°F)	140 mm (5.5 inches)	84%	moderate
February Weather	10°C (51°F)	127 mm (5.0 inches)	84%	moderate
March Weather	12°C (55°F)	138 mm (5.4 inches)	83%	high
April Weather	16°C (61°F)	65 mm (2.6 inches)	81%	very high
May Weather	19°C (66°F)	33 mm (1.3 inches)	74%	very high
June Weather	23°C (74°F)	3 mm (0.1 inches)	64%	extreme
July Weather	25°C (77°F)	0 mm (0.0 inches)	44%	extreme
August Weather	24°C (76°F)	0 mm (0.0 inches)	36%	very high
September Weather	22°C (72°F)	5 mm (0.2 inches)	44%	very high
October Weather	18°C (64°F)	37 mm (1.5 inches)	65%	high
November Weather	12°C (54°F)	69 mm (2.7 inches)	84%	moderate
December Weather	9°C (48°F)	120 mm (4.7 inches)	83%	moderate