January Weather in Hallettsville, United States

Last updated: June 24, 2025

In January, the average temperature in Hallettsville, United States hovers around 12°C (54°F), making it a cool yet pleasant time to explore. Be prepared for a wide temperature range, as minimums can dip to -7°C (19°F) while maximums can soar up to 29°C (84°F). Expect around 60 mm (2.4 in) of precipitation spread over about 8 days, and enjoy the average humidity of 78% that adds a bit of moisture to the air.

January Temperature in Hallettsville

In January in Hallettsville, the average temperature is 12°C (54°F). Maximums can reach 29°C (84°F), while minimums can drop to as low as -7°C (19°F). This variety in temperatures means travelers should be prepared for both warm and chilly weather during their visit.

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

The chart illustrates January temperature patterns in Hallettsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hallettsville, 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 -7°C (19°F).

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

January Precipitation in Hallettsville

In Hallettsville in January, the total precipitation amount is 60 mm (2.4 in) spread over the course of 8 days.

January Precipitation Trends in Hallettsville

The chart displays monthly precipitation patterns in Hallettsville, 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 Hallettsville, January typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 8 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 Hallettsville

In Hallettsville 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 Hallettsville

This chart illustrates the average monthly humidity levels in Hallettsville, 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 Hallettsville 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 Hallettsville

In Hallettsville 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 Hallettsville.

Maximum UV Index Levels in Hallettsville for January

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

Data source: Hallettsville 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 Hallettsville Compares to Other Months

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

This table compares monthly weather conditions in Hallettsville, 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)	60 mm (2.4 inches)	78%	moderate
February Weather	14°C (57°F)	70 mm (2.7 inches)	81%	very high
March Weather	19°C (66°F)	69 mm (2.7 inches)	76%	very high
April Weather	21°C (71°F)	101 mm (4.0 inches)	79%	extreme
May Weather	26°C (78°F)	134 mm (5.3 inches)	79%	extreme
June Weather	28°C (83°F)	105 mm (4.1 inches)	74%	extreme
July Weather	29°C (85°F)	93 mm (3.6 inches)	71%	extreme
August Weather	30°C (86°F)	116 mm (4.6 inches)	68%	extreme
September Weather	27°C (81°F)	110 mm (4.3 inches)	73%	very high
October Weather	22°C (73°F)	75 mm (3.0 inches)	75%	very high
November Weather	17°C (63°F)	66 mm (2.6 inches)	78%	high
December Weather	14°C (58°F)	76 mm (3.0 inches)	84%	moderate