January Weather in Johnsonville, United States

Last updated: June 24, 2025

In January, the average temperature in Johnsonville, United States hovers around 9°C (49°F). However, temperatures can swing dramatically, with minimums plunging to -13°C (9°F) and maximums rising to a balmy 27°C (81°F). Expect about 69 mm (2.7 in) of precipitation over 8 days, contributing to an average humidity level of 83%. Stay prepared for a range of weather!

January Temperature in Johnsonville

In January in Johnsonville, the average temperature is 9°C (49°F), with maximums reaching 27°C (81°F) and minimums dropping as low as -13°C (9°F). Travelers should prepare for a wide range of temperatures, ensuring they pack layers to stay comfortable.

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

The chart illustrates January temperature patterns in Johnsonville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Johnsonville, January typically has an average temperature of 9°C (49°F), with highs reaching up to 27°C (81°F) and lows dropping to around -13°C (9°F).

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

January Precipitation in Johnsonville

In Johnsonville in January, the precipitation amount is 69 mm (2.7 in) that falls over a period of 8 days.

January Precipitation Trends in Johnsonville

The chart displays monthly precipitation patterns in Johnsonville, 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 Johnsonville, January typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Johnsonville

In Johnsonville in January, humidity is 83%. With an average temperature of 9°C (49°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities uncomfortable for traveling and requiring extra layers to stay warm and dry.

January Average Humidity in Johnsonville

This chart illustrates the average monthly humidity levels in Johnsonville, 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 Johnsonville 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 Johnsonville

In Johnsonville in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Johnsonville for better planning.

Maximum UV Index Levels in Johnsonville for January

The chart shows the monthly maximum UV Index (UVI) for Johnsonville 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 Johnsonville typically reaches 4, which falls under the moderate exposure category.

Data source: Johnsonville 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 Johnsonville Compares to Other Months

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

This table compares monthly weather conditions in Johnsonville, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	69 mm (2.7 inches)	83%	moderate
February Weather	12°C (55°F)	86 mm (3.4 inches)	79%	high
March Weather	14°C (58°F)	72 mm (2.8 inches)	79%	very high
April Weather	18°C (65°F)	94 mm (3.7 inches)	78%	very high
May Weather	23°C (74°F)	108 mm (4.3 inches)	78%	extreme
June Weather	26°C (78°F)	149 mm (5.9 inches)	78%	extreme
July Weather	27°C (81°F)	172 mm (6.8 inches)	82%	extreme
August Weather	27°C (80°F)	207 mm (8.1 inches)	81%	extreme
September Weather	25°C (77°F)	158 mm (6.2 inches)	81%	very high
October Weather	21°C (69°F)	54 mm (2.1 inches)	78%	very high
November Weather	13°C (56°F)	83 mm (3.2 inches)	82%	high
December Weather	11°C (52°F)	133 mm (5.3 inches)	84%	moderate