January Weather in Tomball, United States

Last updated: June 24, 2025

In January, the average temperature in Tomball, United States hovers around 12°C (54°F). Expect a range of conditions, with minimums dipping to -8°C (18°F) and maximums reaching 29°C (84°F). Rainfall averages 91 mm (3.6 in) over approximately 9 days, complemented by an average humidity of 78%, creating a unique climate blend for the month.

January Temperature in Tomball

In January in Tomball, the average temperature is 12°C (54°F). The maximum can reach 29°C (84°F), and the minimum can be as low as -8°C (18°F). This varied climate makes Tomball an exciting destination for travelers seeking both warmth and the thrill of chilly adventures.

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

The chart illustrates January temperature patterns in Tomball, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tomball, January typically has an average temperature of 12°C (54°F), with highs reaching up to 29°C (84°F) and lows dropping to around -8°C (18°F).

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

January Precipitation in Tomball

In Tomball in January, the precipitation amount is 91 mm (3.6 in) spread over 9 days.

January Precipitation Trends in Tomball

The chart displays monthly precipitation patterns in Tomball, 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 Tomball, January typically receives around 91 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.

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Millimeters (mm) Inches (in)

January Humidity in Tomball

In Tomball in January humidity is 78%. With an average temperature of 12°C (54°F), this humidity feels like a damp chill settling in, making travel a bit uncomfortable as the air clings to your skin, leaving you feeling cooler than the thermometer suggests.

January Average Humidity in Tomball

This chart illustrates the average monthly humidity levels in Tomball, 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 Tomball is approximately 78%, 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 Tomball

In Tomball in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Tomball.

Maximum UV Index Levels in Tomball for January

The chart shows the monthly maximum UV Index (UVI) for Tomball 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 Tomball typically reaches 5, which falls under the moderate exposure category.

Data source: Tomball 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 Tomball Compares to Other Months

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

This table compares monthly weather conditions in Tomball, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	91 mm (3.6 inches)	78%	moderate
February Weather	14°C (57°F)	103 mm (4.1 inches)	81%	very high
March Weather	18°C (65°F)	86 mm (3.4 inches)	76%	very high
April Weather	21°C (70°F)	90 mm (3.6 inches)	79%	extreme
May Weather	25°C (77°F)	192 mm (7.6 inches)	79%	extreme
June Weather	28°C (82°F)	160 mm (6.3 inches)	74%	extreme
July Weather	29°C (84°F)	123 mm (4.9 inches)	71%	extreme
August Weather	29°C (84°F)	168 mm (6.6 inches)	68%	extreme
September Weather	26°C (80°F)	166 mm (6.5 inches)	73%	very high
October Weather	22°C (72°F)	104 mm (4.1 inches)	75%	very high
November Weather	16°C (62°F)	73 mm (2.9 inches)	78%	high
December Weather	14°C (57°F)	111 mm (4.4 inches)	84%	moderate