Killeen (TX) Temperature by Month
Killeen, Texas, United States of America has an average annual maximum temperature of 26°C (79°F), ranging from 16°C (61°F) in January to 36°C (97°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Killeen Monthly Temperatures
The weather in Killeen experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 24°C (75°F) in August to 3°C (37°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Killeen by month:
The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. August, the warmest month, gets 305 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Killeen 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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Killeen vs World: Temperature Compared
Killeen's average annual maximum temperature is 26°C (79°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.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm 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 Killeen this rarely lasts long on the ground.
For more on Killeen's weather — including monthly rainfall, sunshine hours, and humidity — visit our Killeen climate page.
