January Weather in Rolla, United States

Last updated: June 24, 2025

In January, the average temperature in Rolla, United States hovers around -13°C (8°F), with extreme lows plummeting to -39°C (-38°F) and highs barely reaching 3°C (39°F). Expect a touch of precipitation, accumulating to 15 mm (0.6 in) over the course of 3 days, all amidst a chilly atmosphere with an average humidity of 92%. Bundle up!

January Temperature in Rolla

In January in Rolla, the average temperature is -13°C (8°F). The maximum can reach 3°C (39°F) and the minimum can be as low as -39°C (-38°F). Travelers should be prepared for extremely cold conditions and may want to bundle up for their visit.

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

The chart illustrates January temperature patterns in Rolla, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rolla, January typically has an average temperature of -13°C (8°F), with highs reaching up to 3°C (39°F) and lows dropping to around -39°C (-38°F).

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

January Precipitation in Rolla

In Rolla in January, the precipitation amount is 15 mm (0.6 in) over the course of 3 days.

January Precipitation Trends in Rolla

The chart displays monthly precipitation patterns in Rolla, 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 Rolla, January typically receives around 15 mm (0.6 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 Rolla

In Rolla in January, humidity is 92%. With an average temperature of -13°C (8°F), this humidity feels like a biting chill that wraps around you, making travel uncomfortable and the cold seem even more penetrating.

January Average Humidity in Rolla

This chart illustrates the average monthly humidity levels in Rolla, 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 Rolla is approximately 92%, 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 Rolla

In Rolla in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Rolla, you can visit Hourly UV Index in Rolla.

Maximum UV Index Levels in Rolla for January

The chart shows the monthly maximum UV Index (UVI) for Rolla 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 Rolla typically reaches 2, which falls under the low exposure category.

Data source: Rolla 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 Rolla Compares to Other Months

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

This table compares monthly weather conditions in Rolla, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-13°C (8°F)	15 mm (0.6 inches)	92%	low
February Weather	-15°C (5°F)	16 mm (0.6 inches)	90%	moderate
March Weather	-5°C (24°F)	23 mm (0.9 inches)	88%	moderate
April Weather	2°C (36°F)	22 mm (0.9 inches)	81%	very high
May Weather	11°C (53°F)	42 mm (1.7 inches)	74%	very high
June Weather	18°C (65°F)	78 mm (3.1 inches)	72%	very high
July Weather	20°C (69°F)	59 mm (2.3 inches)	74%	very high
August Weather	18°C (65°F)	70 mm (2.8 inches)	76%	very high
September Weather	13°C (56°F)	73 mm (2.9 inches)	73%	high
October Weather	5°C (41°F)	51 mm (2.0 inches)	76%	moderate
November Weather	-4°C (24°F)	26 mm (1.0 inches)	86%	low
December Weather	-10°C (15°F)	23 mm (0.9 inches)	91%	low