Climate Overview
The climate in Houston Airport is cool. The average annual temperature is 3°C and approximately 789mm of precipitation falls per year. Houston Airport receives a notable amount of rainfall throughout the year, including during its driest month. Houston Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are December, February, January, when temperatures can drop to -11°C. Houston Airport experiences heavy snowfall, typically from January through December.
Temperature
Temperatures in Houston Airport vary considerably across the year, with a 31°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 20°C with a mean of 14°C. The coldest month is December, when overnight lows fall to -11°C and the daily average is -9°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 7°C shift in average temperatures.
Precipitation
Houston Airport is a relatively dry area, receiving approximately 789mm of precipitation annually, which averages out to around 66mm per month. The wettest month is November, averaging 97mm of rainfall. October and September also tend to see above-average precipitation. The driest month is April, with just 43mm. That's 54mm less than November, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Houston Airport receives heavy snowfall, accumulating around 284cm annually from January through December. The snowiest month is November, with approximately 55cm. Winter travel should account for significant snow cover.
Wind
Houston Airport is relatively calm, with an average annual wind speed of 11km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 8km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 9km/h in winter, 13km/h in spring, 12km/h in summer, 11km/h in autumn.
Seasons
89 days until Summer
It is currently spring in Houston Airport, which began on March 20, 2026. Houston Airport is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 20°C, while the coldest stretch bottoms out in December near -11°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from -7 to 15°C. Rainfall is relatively light, with around 145mm over the season and a monthly average of 48mm. Winds are generally light, averaging 13km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 6 to 20°C. Precipitation is moderate at around 177mm for the season, averaging 59mm per month. Winds are generally light, averaging 12km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from -5 to 14°C. Precipitation is moderate at around 263mm for the season, averaging 88mm per month. Expect around 87cm of snow accumulation during this period. Winds are generally light, averaging 11km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -11 to -2°C. Precipitation is moderate at around 204mm for the season, averaging 68mm per month. Expect around 141cm of snow accumulation during this period. Winds are generally light, averaging 9km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.
Monthly Climate Data
The table below shows monthly climate averages for Houston Airport based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
