January Weather in Cullen, United States

Last updated: June 24, 2025

In January, the average temperature in Cullen, United States hovers around 8°C (47°F). However, be prepared for a wide range of temperatures, with a minimum of -14°C (7°F) and a maximum of 26°C (79°F). Expect a total precipitation of 105 mm (4.1 in) spread over 9 days, and keep in mind that the average humidity is a comfortable 82%.

January Temperature in Cullen

In January in Cullen, the average temperature is 8°C (47°F). The maximum can reach 26°C (79°F), and the minimum can be as low as -14°C (7°F). Be prepared for a diverse range of temperatures when traveling to Cullen during this month.

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

The chart illustrates January temperature patterns in Cullen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cullen, January typically has an average temperature of 8°C (47°F), with highs reaching up to 26°C (79°F) and lows dropping to around -14°C (7°F).

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

January Precipitation in Cullen

In Cullen in January, the total precipitation amount reaches 105 mm (4.1 in) over the course of 9 days.

January Precipitation Trends in Cullen

The chart displays monthly precipitation patterns in Cullen, 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 Cullen, 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 Cullen

In Cullen in January humidity is 82%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration less enjoyable and requiring extra layers to stay warm and comfortable.

January Average Humidity in Cullen

This chart illustrates the average monthly humidity levels in Cullen, 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 Cullen is approximately 82%, 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 Cullen

In Cullen 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 Cullen for better planning.

Maximum UV Index Levels in Cullen for January

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

Data source: Cullen 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 Cullen Compares to Other Months

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

This table compares monthly weather conditions in Cullen, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	105 mm (4.1 inches)	82%	moderate
February Weather	10°C (50°F)	154 mm (6.1 inches)	80%	high
March Weather	16°C (60°F)	132 mm (5.2 inches)	78%	very high
April Weather	18°C (65°F)	183 mm (7.2 inches)	79%	extreme
May Weather	23°C (74°F)	132 mm (5.2 inches)	81%	extreme
June Weather	27°C (81°F)	109 mm (4.3 inches)	77%	extreme
July Weather	28°C (84°F)	79 mm (3.1 inches)	72%	extreme
August Weather	28°C (83°F)	100 mm (3.9 inches)	65%	extreme
September Weather	26°C (79°F)	98 mm (3.9 inches)	63%	very high
October Weather	20°C (67°F)	107 mm (4.2 inches)	70%	very high
November Weather	13°C (55°F)	66 mm (2.6 inches)	82%	high
December Weather	11°C (52°F)	132 mm (5.2 inches)	88%	moderate