Hallettsville (TX) Temperature by Month
Hallettsville in Texas, United States of America sees significant seasonal temperature differences, with daytime highs between 17°C (63°F) in January and 36°C (97°F) in August, averaging 27°C (81°F) annually. Explore the full monthly breakdown below.
Hallettsville Monthly Temperatures
Visitors to Hallettsville can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 23°C (73°F) in August to 5°C (41°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Hallettsville by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM.
The chart below shows the average temperature throughout the year:
Temperature: Hallettsville vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
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Hallettsville vs World: Temperature Compared
Hallettsville's average annual maximum temperature is 27°C (81°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Glasgow, Scotland averages 13°C (55°F) a year — mild but often grey, with cold winters and rarely hot summers.
Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Hallettsville this rarely lasts long on the ground.
For more on Hallettsville's weather — including monthly rainfall, sunshine hours, and humidity — visit our Hallettsville climate page.
