January Weather in Jerome, United States

Last updated: June 24, 2025

In January, the average temperature in Jerome, United States hovers around 0°C (31°F), with extremes ranging from a chilly -26°C (-14°F) to a pleasant 16°C (61°F). Expect about 40 mm (1.6 in) of precipitation spread over 8 days, while the air remains notably humid at an average of 91%.

January Temperature in Jerome

In January in Jerome, the average temperature is 0°C (31°F). Maximum temperatures can reach 16°C (61°F), while minimums can drop as low as -26°C (-14°F). Travelers should be prepared for a wide range of temperatures during this time.

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 0°C (31°F), with highs reaching up to 16°C (61°F) and lows dropping to around -26°C (-14°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 40 mm (1.6 in), occurring over a span of 8 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 40 mm (1.6 inches) of precipitation spread over approximately 8 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 91%. With an average temperature of 0°C (31°F), this humidity feels like a chilling dampness that clings to your skin, making outdoor activities less enjoyable and necessitating extra layers to stay warm 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 91%, 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	0°C (31°F)	40 mm (1.6 inches)	91%	moderate
February Weather	2°C (35°F)	46 mm (1.8 inches)	92%	moderate
March Weather	7°C (45°F)	34 mm (1.4 inches)	85%	high
April Weather	11°C (52°F)	23 mm (0.9 inches)	76%	very high
May Weather	16°C (60°F)	31 mm (1.2 inches)	66%	very high
June Weather	22°C (71°F)	11 mm (0.4 inches)	62%	extreme
July Weather	27°C (81°F)	3 mm (0.1 inches)	53%	extreme
August Weather	25°C (78°F)	5 mm (0.2 inches)	42%	very high
September Weather	19°C (67°F)	12 mm (0.5 inches)	46%	very high
October Weather	11°C (51°F)	22 mm (0.9 inches)	64%	high
November Weather	5°C (41°F)	29 mm (1.1 inches)	83%	moderate
December Weather	0°C (33°F)	36 mm (1.4 inches)	87%	moderate