January Weather in Rock Valley, United States

Last updated: June 24, 2025

In January, the average temperature in Rock Valley, United States hovers around -6°C (21°F). Prepare for a chill, as temperatures can plunge to a minimum of -31°C (-23°F), while the mercury can rise to a maximum of 12°C (53°F). Expect about 25 mm (1.0 in) of precipitation spread over 4 days, and a brisk average humidity of 80%. Bundle up and stay dry!

January Temperature in Rock Valley

In January in Rock Valley, the average temperature is -6°C (21°F). Maximum temperatures can reach up to 12°C (53°F), while minimums can plummet as low as -31°C (-23°F). Be prepared for a wide range of weather conditions if you plan to travel during this time.

January Weather in Rock Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Rock Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rock Valley, January typically has an average temperature of -6°C (21°F), with highs reaching up to 12°C (53°F) and lows dropping to around -31°C (-23°F).

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

January Precipitation in Rock Valley

In Rock Valley in January, the precipitation amount is 25 mm (1.0 in) over the course of 4 days.

January Precipitation Trends in Rock Valley

The chart displays monthly precipitation patterns in Rock Valley, 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 Rock Valley, January typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 4 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 Rock Valley

In Rock Valley in January, humidity is 80%. With an average temperature of -6°C (21°F), this humidity feels like a frosty, biting chill that cuts through layers of clothing, making outdoor exploration uncomfortable and potentially dangerous if not properly prepared.

January Average Humidity in Rock Valley

This chart illustrates the average monthly humidity levels in Rock Valley, 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 Rock Valley is approximately 80%, 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 Rock Valley

In Rock Valley 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 Rock Valley, you can visit Hourly UV Index in Rock Valley.

Maximum UV Index Levels in Rock Valley for January

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

Data source: Rock Valley 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 Rock Valley Compares to Other Months

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

This table compares monthly weather conditions in Rock Valley, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	25 mm (1.0 inches)	80%	low
February Weather	-7°C (20°F)	29 mm (1.1 inches)	84%	moderate
March Weather	2°C (36°F)	70 mm (2.7 inches)	75%	moderate
April Weather	7°C (45°F)	92 mm (3.6 inches)	79%	very high
May Weather	15°C (60°F)	133 mm (5.2 inches)	74%	very high
June Weather	23°C (73°F)	101 mm (4.0 inches)	81%	extreme
July Weather	24°C (75°F)	80 mm (3.2 inches)	82%	very high
August Weather	22°C (72°F)	98 mm (3.9 inches)	80%	very high
September Weather	19°C (66°F)	100 mm (3.9 inches)	75%	very high
October Weather	9°C (49°F)	85 mm (3.3 inches)	77%	moderate
November Weather	2°C (35°F)	27 mm (1.0 inches)	85%	moderate
December Weather	-3°C (27°F)	39 mm (1.5 inches)	83%	moderate