January Weather in Apex, United States

Last updated: June 24, 2025

In January, the average temperature in Apex, United States hovers around 6°C (43°F). Expect a chilly minimum of -14°C (7°F), while temperatures can soar to a pleasant maximum of 25°C (77°F). During this month, be prepared for precipitation totaling 93 mm (3.6 in) over approximately 9 days. With an average humidity of 85%, the air will feel quite damp, making it essential to layer up and stay cozy!

January Temperature in Apex

In January in Apex, the average temperature is 6°C (43°F). Maximum temperatures can reach 25°C (77°F), while minimums can drop as low as -14°C (7°F). It's advisable to pack layers to stay comfortable during your travels.

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

The chart illustrates January temperature patterns in Apex, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Apex, January typically has an average temperature of 6°C (43°F), with highs reaching up to 25°C (77°F) and lows dropping to around -14°C (7°F).

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

January Precipitation in Apex

In Apex in January, the precipitation amount is 93 mm (3.6 in) during a span of 9 days.

January Precipitation Trends in Apex

The chart displays monthly precipitation patterns in Apex, 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 Apex, January typically receives around 93 mm (3.6 inches) of precipitation spread over approximately 9 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 Apex

In Apex in January, humidity is 85%. With an average temperature of 6°C (43°F), this humidity feels like a damp chill that seeps into your bones, making travel feel more uncomfortable and limiting your enjoyment of the sights as you navigate the wet, brisk air.

January Average Humidity in Apex

This chart illustrates the average monthly humidity levels in Apex, 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 Apex is approximately 85%, 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 Apex

In Apex 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 Apex for better planning.

Maximum UV Index Levels in Apex for January

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

Data source: Apex 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 Apex Compares to Other Months

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

This table compares monthly weather conditions in Apex, 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 (43°F)	93 mm (3.6 inches)	85%	moderate
February Weather	9°C (49°F)	107 mm (4.2 inches)	82%	high
March Weather	12°C (53°F)	80 mm (3.2 inches)	81%	very high
April Weather	17°C (62°F)	114 mm (4.5 inches)	80%	very high
May Weather	22°C (71°F)	114 mm (4.5 inches)	81%	extreme
June Weather	25°C (76°F)	131 mm (5.2 inches)	81%	extreme
July Weather	27°C (81°F)	117 mm (4.6 inches)	81%	extreme
August Weather	26°C (79°F)	141 mm (5.6 inches)	80%	very high
September Weather	23°C (75°F)	140 mm (5.5 inches)	79%	very high
October Weather	18°C (66°F)	85 mm (3.4 inches)	80%	very high
November Weather	11°C (51°F)	83 mm (3.3 inches)	85%	moderate
December Weather	8°C (47°F)	107 mm (4.2 inches)	86%	moderate