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Get the monthly weather forecast for Houston, TX, including daily high/low, historical averages, to help you plan ahead.
Weather.com brings you the most accurate monthly weather forecast for Houston, TX with average/record and high/low temperatures, precipitation and more.
- Temperature
- Rain
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- Humidity
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Nearly every September day warms to over 80 degrees Fahrenheit (27 degrees Celsius) in Houston. The city can reach 100 °F (38 °C) now, although days that hot don't happen this late every summer. The thermometer dips to 60 °F (16 °C) or below on an average of 1 night during the month.
Half the time, Houston receives 3.2 to 8.5 inches (81 to 215 mm) of rainfall in September. One in four years has drier weather, while another one in four is wetter.
The sun's rays reach the ground in Houston during 66 percent of daylight hours on average in September, for a total of 244 hours in the month. Typically on 9 days this month the sky is mainly clear, with at most 30 percent cloud cover. Sunlight in September at Houston lasts for 12 hours and 19 minutes a day on average. The longest day of the month ...
September is the most humid time of year for Houston. The relative humidity usually peaks at 93 percent in the morning then drops to 57 percent by mid afternoon.
There's a 6 percent probability that a hurricane will approach within 100 miles (165 km) of Houston during September. The chance of a major category 3 to 5 hurricane reaching the area is 1 percent.
In Houston during September average daily high temperatures decrease from 92°F to 86°F and the fraction of time spent overcast or mostly cloudy decreases from 46% to 32%.
Jul 31, 2024 · An average high-temperature, in September, in Houston, is 88.3°F (31.3°C) and the average low-temperature is 72.7°F (22.6°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in September is evaluated at 104°F (40°C).
- In Houston, in September, the average high-temperature is 88.3°F , and the average low-temperature is 72.7°F . The average heat index (a.k.a. 'real...
- In September, the average relative humidity in Houston, Texas, is 74% .
- September is the month with the most rainfall in Houston. Rain falls for 19.5 days and accumulates 4.49" of precipitation .
- In Houston, Texas, during September, the rain falls for 19.5 days and regularly aggregates up to 4.49" of precipitation .
- February through November are months without snowfall in Houston.
- In Houston, the average day length in September is 12h and 20min .
- In September, on the first day of the month, sunrise is at 6:58 am and sunset at 7:44 pm . On the last day of the month, sunrise is at 7:14 am and...
- In Houston, Texas, the average sunshine duration in September is 8.6h .
- In September, the average daily maximum UV index in Houston is 6 . A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure...
2 days ago · Houston, USA 14 day weather forecast. Home Weather Houston Two-week forecast. Houston 14 Day Extended Forecast. Weather. Weather Today Weather Hourly 14 Day Forecast Yesterday/Past Weather Climate (Averages) Currently: 71 °F. Passing clouds. (Weather station: Houston Hobby Airport, USA). See more current weather.
The average temperature in Houston in September for a typical day ranges from a high of 90°F (32°C) to a low of 73°F (23°C). Some would describe it as very warm with a gentle breeze. For comparison, the hottest month in Houston, August, has days with highs of 95°F (35°C) and lows of 77°F (25°C).
