January Weather in Johnson, United States

Last updated: June 24, 2025

In January, the average temperature in Johnson, United States hovers around 2°C (35°F). During this time, temperatures can swing from a chilly -18°C (0°F) to a surprisingly mild 23°C (74°F). Expect 15 mm (0.6 in) of precipitation spread over 4 days, with an average humidity of 74% adding a touch of crispness to the air.

January Temperature in Johnson

In January in Johnson, the average temperature is 2°C (35°F). The maximum can reach 23°C (74°F), and the minimum can be as low as -18°C (0°F). Travelers should be prepared for a wide range of temperatures and pack accordingly to fully enjoy their stay in Johnson.

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

The chart illustrates January temperature patterns in Johnson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Johnson, January typically has an average temperature of 2°C (35°F), with highs reaching up to 23°C (74°F) and lows dropping to around -18°C (0°F).

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

January Precipitation in Johnson

In Johnson in January, the precipitation amount is 15 mm (0.6 in) occurring over the course of 4 days.

January Precipitation Trends in Johnson

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

In Johnson in January, humidity is 74%. With an average temperature of 2°C (35°F), this humidity feels like a chill that penetrates your clothes, making every outdoor activity a bit uncomfortable and requiring you to bundle up tightly to ward off the damp cold.

January Average Humidity in Johnson

This chart illustrates the average monthly humidity levels in Johnson, 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 Johnson is approximately 74%, 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 Johnson

In Johnson 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 Johnson for better planning.

Maximum UV Index Levels in Johnson for January

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

Data source: Johnson 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 Johnson Compares to Other Months

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

This table compares monthly weather conditions in Johnson, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (35°F)	15 mm (0.6 inches)	74%	moderate
February Weather	2°C (36°F)	13 mm (0.5 inches)	77%	moderate
March Weather	9°C (48°F)	38 mm (1.5 inches)	65%	very high
April Weather	13°C (55°F)	44 mm (1.7 inches)	67%	very high
May Weather	18°C (65°F)	84 mm (3.3 inches)	81%	extreme
June Weather	25°C (77°F)	38 mm (1.5 inches)	82%	extreme
July Weather	27°C (81°F)	38 mm (1.5 inches)	82%	extreme
August Weather	25°C (78°F)	60 mm (2.4 inches)	84%	extreme
September Weather	22°C (73°F)	34 mm (1.3 inches)	79%	very high
October Weather	14°C (57°F)	29 mm (1.1 inches)	75%	high
November Weather	8°C (47°F)	8 mm (0.3 inches)	79%	moderate
December Weather	3°C (38°F)	19 mm (0.8 inches)	83%	moderate