January Weather in Addison, United States

Last updated: June 24, 2025

In January, the average temperature in Addison, United States hovers around 7°C (45°F), making it a cool yet manageable time of year. Temperatures can swing widely, with a minimum of -14°C (7°F) and a maximum reaching 25°C (77°F). Expect 113 mm (4.5 in) of precipitation spread over 9 days, contributing to an average humidity of 87%. Be prepared for varying weather as you explore this charming destination!

January Temperature in Addison

In January in Addison, the average temperature is 7°C (45°F). The maximum can reach 25°C (77°F), and the minimum can be as low as -14°C (7°F). It's advisable to prepare for a wide range of temperatures when planning your visit.

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

The chart illustrates January temperature patterns in Addison, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Addison, January typically has an average temperature of 7°C (45°F), with highs reaching up to 25°C (77°F) and lows dropping to around -14°C (7°F).

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

January Precipitation in Addison

In Addison in January, the precipitation amount is 113 mm (4.5 in) over a span of 9 days.

January Precipitation Trends in Addison

The chart displays monthly precipitation patterns in Addison, 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 Addison, January typically receives around 113 mm (4.5 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 Addison

In Addison in January, humidity is 87%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor adventures somewhat uncomfortable and urging travelers to seek refuge in cozy cafes or warm indoor activities.

January Average Humidity in Addison

This chart illustrates the average monthly humidity levels in Addison, 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 Addison is approximately 87%, 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 Addison

In Addison 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 Addison for better planning.

Maximum UV Index Levels in Addison for January

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

Data source: Addison 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 Addison Compares to Other Months

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

This table compares monthly weather conditions in Addison, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	113 mm (4.5 inches)	87%	moderate
February Weather	10°C (50°F)	192 mm (7.6 inches)	87%	high
March Weather	14°C (57°F)	173 mm (6.8 inches)	85%	very high
April Weather	16°C (62°F)	156 mm (6.1 inches)	82%	very high
May Weather	22°C (71°F)	118 mm (4.6 inches)	83%	extreme
June Weather	25°C (77°F)	152 mm (6.0 inches)	82%	extreme
July Weather	27°C (80°F)	112 mm (4.4 inches)	78%	extreme
August Weather	26°C (80°F)	126 mm (4.9 inches)	67%	very high
September Weather	24°C (76°F)	103 mm (4.1 inches)	64%	very high
October Weather	19°C (66°F)	120 mm (4.7 inches)	74%	high
November Weather	11°C (51°F)	73 mm (2.9 inches)	87%	moderate
December Weather	9°C (48°F)	158 mm (6.2 inches)	88%	moderate