January Weather in Johnsonville, United States

Last updated: June 24, 2025

In January, the average temperature in Johnsonville, United States hovers around 5°C (41°F), with a minimum plunging to -14°C (7°F) and a maximum rising to 22°C (72°F). Expect 105 mm (4.1 in) of precipitation spread across 9 days, contributing to a notable average humidity of 86%. Stay prepared for a mix of chilly days and potential rain!

January Temperature in Johnsonville

In January in Johnsonville, the average temperature is 5°C (41°F), with maximums reaching 22°C (72°F) and minimums plummeting to -14°C (7°F). Travelers should be prepared for a wide range of temperatures during this time, ensuring they pack accordingly for both warm and cold conditions.

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 5°C (41°F), with highs reaching up to 22°C (72°F) and lows dropping to around -14°C (7°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 total precipitation amount reaches 105 mm (4.1 in) over the course of 9 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 105 mm (4.1 inches) of precipitation spread over approximately 9 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 Johnsonville

In Johnsonville in January humidity is 86%. With an average temperature of 5°C (41°F), this humidity feels like a heavy, damp blanket wrapping around you, making outdoor activities uncomfortable and travel quite challenging due to the chill combined with the stickiness in the air.

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 86%, 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 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 Johnsonville, you can check the information here.

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 3, 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	5°C (41°F)	105 mm (4.1 inches)	86%	moderate
February Weather	7°C (45°F)	178 mm (7.0 inches)	85%	high
March Weather	12°C (53°F)	160 mm (6.3 inches)	84%	high
April Weather	15°C (59°F)	169 mm (6.7 inches)	81%	very high
May Weather	21°C (70°F)	123 mm (4.8 inches)	83%	very high
June Weather	25°C (78°F)	115 mm (4.5 inches)	83%	extreme
July Weather	27°C (81°F)	125 mm (4.9 inches)	80%	extreme
August Weather	26°C (79°F)	118 mm (4.7 inches)	73%	very high
September Weather	24°C (75°F)	108 mm (4.2 inches)	70%	very high
October Weather	18°C (64°F)	128 mm (5.1 inches)	73%	high
November Weather	10°C (50°F)	88 mm (3.5 inches)	85%	moderate
December Weather	8°C (46°F)	136 mm (5.4 inches)	88%	moderate