Houston (TX) Temperature by Month
Houston in Texas, United States of America sees significant seasonal temperature differences, with daytime highs between 17°C (63°F) in January and 35°C (95°F) in August, averaging 27°C (81°F) annually. Explore the full monthly breakdown below.
Houston Monthly Temperatures
Depending on the time of the year, temperatures range from very hot to mild in Houston. Nighttime lows follow the same pattern, ranging from 25°C (77°F) to 7°C (45°F).
The chart below illustrates the average maximum day and minimum night temperatures in Houston by month:
Temperatures tend to bottom out between 4 AM and 6 AM, then climb to their daily peak around 3 PM. August, the warmest month, sees 270 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in July
Historical Houston Temperatures: 1976-2026
Browse day-by-day temperature records for Houston spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Houston 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.
very warm
warm
pleasant
moderate
cold
very cold
Houston vs World: Temperature Compared
Houston'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.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
What Does the Temperature Feel Like in Houston?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Houston, January is the coolest month, with average highs of 17°C (63°F) and humidity around 75% — considered high. In August, the warmest month, temperatures average 35°C (95°F) with 75% humidity — conditions that feel high. For a full picture, see our humidity page.
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 Houston this rarely lasts long on the ground.
For more on Houston's weather — including monthly rainfall, sunshine hours, and humidity — visit our Houston climate page.
