January Weather in Jerome, United States

Last updated: June 24, 2025

In Jerome, United States, the average temperature in January hovers around -2°C (29°F). However, temperatures can swing dramatically, with a minimum plunge to -26°C (-15°F) and a maximum reaching up to 17°C (63°F). During this month, expect about 68 mm (2.7 in) of precipitation spread over 7 days, accompanied by an average humidity level of 84%.

January Temperature in Jerome

In January in Jerome, the average temperature is -2°C (29°F), with a maximum reaching 17°C (63°F) and a minimum dropping as low as -26°C (-15°F). Be prepared for a wide range of temperatures and pack accordingly when traveling to Jerome.

January Weather in Jerome: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Jerome, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jerome, January typically has an average temperature of -2°C (29°F), with highs reaching up to 17°C (63°F) and lows dropping to around -26°C (-15°F).

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

January Precipitation in Jerome

In Jerome in January, the precipitation amount is 68 mm (2.7 in) over the course of 7 days.

January Precipitation Trends in Jerome

The chart displays monthly precipitation patterns in Jerome, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Jerome, January typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 7 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Jerome

In Jerome in January, humidity is 84%. With an average temperature of -2°C (29°F), this humidity feels like an icy blanket that clings to your skin, making it difficult to stay warm and comfortable while traveling.

January Average Humidity in Jerome

This chart illustrates the average monthly humidity levels in Jerome, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Jerome is approximately 84%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Jerome

In Jerome in January, 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 Jerome, you can check the information here.

Maximum UV Index Levels in Jerome for January

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

Data source: Jerome January 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 January Weather in Jerome Compares to Other Months

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

This table compares monthly weather conditions in Jerome, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	68 mm (2.7 inches)	84%	moderate
February Weather	0°C (32°F)	69 mm (2.7 inches)	82%	moderate
March Weather	6°C (44°F)	136 mm (5.4 inches)	84%	high
April Weather	11°C (53°F)	130 mm (5.1 inches)	83%	very high
May Weather	19°C (66°F)	144 mm (5.7 inches)	80%	very high
June Weather	24°C (75°F)	126 mm (5.0 inches)	83%	extreme
July Weather	25°C (78°F)	110 mm (4.3 inches)	82%	extreme
August Weather	24°C (75°F)	87 mm (3.4 inches)	82%	very high
September Weather	22°C (71°F)	60 mm (2.4 inches)	79%	very high
October Weather	14°C (58°F)	102 mm (4.0 inches)	79%	high
November Weather	5°C (42°F)	69 mm (2.7 inches)	88%	moderate
December Weather	2°C (36°F)	50 mm (2.0 inches)	87%	moderate