January Weather in Rolla, United States

Last updated: June 24, 2025

In January, the average temperature in Rolla, United States hovers around 1°C (34°F). Temperatures can swing dramatically, with a minimum of -19°C (-2°F) and a maximum of 21°C (69°F). Expect about 80 mm (3.1 in) of precipitation over 8 days, contributing to an average humidity of 83%. Stay prepared for a mix of brisk cold and occasional warmth!

January Temperature in Rolla

In January in Rolla, the average temperature is 1°C (34°F). Maximum temperatures can reach 21°C (69°F), while minimums can drop as low as -19°C (-2°F). Be prepared for a wide temperature range when planning your trip to Rolla during this time.

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 1°C (34°F), with highs reaching up to 21°C (69°F) and lows dropping to around -19°C (-2°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 80 mm (3.1 in) over a period of 8 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 80 mm (3.1 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 Rolla

In Rolla in January, humidity is 83%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making travel uncomfortable as the damp cold seeps into your bones, adding an extra layer of heaviness to the air that can leave you feeling sluggish and fatigued.

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 83%, 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 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 Rolla, you can check the information here.

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 3, which falls under the moderate 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	1°C (34°F)	80 mm (3.1 inches)	83%	moderate
February Weather	2°C (37°F)	90 mm (3.6 inches)	81%	moderate
March Weather	9°C (48°F)	130 mm (5.1 inches)	80%	high
April Weather	13°C (55°F)	140 mm (5.5 inches)	80%	very high
May Weather	19°C (66°F)	179 mm (7.0 inches)	83%	very high
June Weather	24°C (76°F)	85 mm (3.3 inches)	83%	extreme
July Weather	26°C (79°F)	90 mm (3.5 inches)	76%	extreme
August Weather	24°C (76°F)	102 mm (4.0 inches)	69%	very high
September Weather	22°C (72°F)	52 mm (2.1 inches)	68%	very high
October Weather	15°C (59°F)	112 mm (4.4 inches)	72%	high
November Weather	7°C (45°F)	67 mm (2.6 inches)	83%	moderate
December Weather	4°C (40°F)	56 mm (2.2 inches)	86%	moderate