January Weather in South Tucson, United States

Last updated: June 24, 2025

In January, the average temperature in South Tucson, United States hovers around 11°C (53°F). Expect chilly lows of -1°C (30°F) and warm highs reaching 25°C (77°F). During this month, precipitation is moderate at 23 mm (0.9 in) over approximately 3 days, with humidity levels averaging 76%.

January Temperature in South Tucson

In January in South Tucson, the average temperature is 11°C (53°F), with maximums reaching up to 25°C (77°F) and minimums dropping as low as -1°C (30°F). Travelers should be prepared for a wide range of temperatures, making layered clothing a wise choice.

January Weather in South Tucson: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in South Tucson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In South Tucson, January typically has an average temperature of 11°C (53°F), with highs reaching up to 25°C (77°F) and lows dropping to around -1°C (30°F).

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

January Precipitation in South Tucson

In South Tucson in January, the precipitation amount is 23 mm (0.9 in) over the course of 3 days.

January Precipitation Trends in South Tucson

The chart displays monthly precipitation patterns in South Tucson, 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 South Tucson, January typically receives around 23 mm (0.9 inches) of precipitation spread over approximately 3 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 South Tucson

In South Tucson in January, humidity is 76%. With an average temperature of 11°C (53°F), this humidity feels like a brisk chill that can make outdoor excursions slightly uncomfortable, as the dampness in the air clings to your skin, making layered clothing essential for any travelers venturing out.

January Average Humidity in South Tucson

This chart illustrates the average monthly humidity levels in South Tucson, 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 South Tucson is approximately 76%, 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 South Tucson

In South Tucson in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in South Tucson.

Maximum UV Index Levels in South Tucson for January

The chart shows the monthly maximum UV Index (UVI) for South Tucson 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 South Tucson typically reaches 5, which falls under the moderate exposure category.

Data source: South Tucson 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 South Tucson Compares to Other Months

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

This table compares monthly weather conditions in South Tucson, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (53°F)	23 mm (0.9 inches)	76%	moderate
February Weather	13°C (55°F)	34 mm (1.3 inches)	79%	high
March Weather	16°C (62°F)	15 mm (0.6 inches)	67%	very high
April Weather	22°C (71°F)	2 mm (0.1 inches)	55%	extreme
May Weather	25°C (78°F)	3 mm (0.1 inches)	40%	extreme
June Weather	31°C (88°F)	8 mm (0.3 inches)	33%	extreme
July Weather	31°C (88°F)	54 mm (2.1 inches)	34%	extreme
August Weather	31°C (87°F)	35 mm (1.4 inches)	48%	extreme
September Weather	28°C (83°F)	27 mm (1.1 inches)	64%	extreme
October Weather	23°C (73°F)	10 mm (0.4 inches)	67%	very high
November Weather	17°C (64°F)	14 mm (0.6 inches)	77%	high
December Weather	12°C (54°F)	27 mm (1.0 inches)	82%	moderate