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Houston Weather in September: Temperature, Precipitation, Wind

Author: Rickey Bohn
Temperature
29.1°C
84.3°F
High temperature
34.4°C
93.9°F
Low temperature
25.5°C
77.9°F
Feels like
31.2°C
88.2°F
Rainy days
9 days
Rainfall level
1.25mm
0.05 inch
Cloud coverage
35.8%
Wind speed
25.5km/h
15.8mph
Daylight time
12:20:04
UV index
8.1
1
partly cloudy day
31.0°C
88.0°F
2
partly cloudy day
30.7°C
87.0°F
3
partly cloudy day
30.3°C
87.0°F
4
rain
30.0°C
86.0°F
5
rain
30.7°C
87.0°F
6
partly cloudy day
31.2°C
88.0°F
7
partly cloudy day
31.4°C
89.0°F
8
clear day
30.9°C
88.0°F
9
rain
29.7°C
85.0°F
10
partly cloudy day
29.8°C
86.0°F
11
partly cloudy day
28.7°C
84.0°F
12
partly cloudy day
29.8°C
86.0°F
13
partly cloudy day
29.4°C
85.0°F
14
rain
26.2°C
79.0°F
15
rain
25.6°C
78.0°F
16
rain
25.6°C
78.0°F
17
rain
28.0°C
82.0°F
18
partly cloudy day
28.8°C
84.0°F
19
partly cloudy day
28.3°C
83.0°F
20
partly cloudy day
28.6°C
83.0°F
21
partly cloudy day
29.8°C
86.0°F
22
partly cloudy day
29.6°C
85.0°F
23
partly cloudy day
29.6°C
85.0°F
24
clear day
29.4°C
85.0°F
25
rain
27.6°C
82.0°F
26
partly cloudy day
27.4°C
81.0°F
27
rain
28.6°C
83.0°F
28
partly cloudy day
28.8°C
84.0°F
29
partly cloudy day
28.4°C
83.0°F
30
clear day
28.5°C
83.0°F

In September, Houston has warm temperatures with an average high of 34.4°C (93.9°F) and an average low of 25.5°C (77.9°F). The city sees some precipitation, with an average of 1.25 inches and a 30% chance of rain. The humidity is around 64.9%.

During September, Houston experiences warm and muggy conditions as summer lingers into early fall. Daytime highs frequently reach into the 90s °F (32-37 °C), with overnight lows in the 70s °F (24-28 °C). The average high temperature is around 93.9 °F (34.4 °C), while the average low temperature is approximately 77.9 °F (25.5 °C). September marks the peak of the Atlantic hurricane season, and Houston is at risk of tropical storms and hurricanes. While direct hits are rare, the city often experiences increased rainfall and gusty winds associated with these systems. Houston has an average of 9 days with measurable precipitation in September, with a 30% chance of rain on any given day. The most common type of precipitation is rain. Winds can be quite gusty in September, with an average wind speed of 25.5 mph (41.0 km/h) and gusts up to 42.3 mph (68.1 km/h). The sky is partly cloudy on most days, with an average cloud cover of 35.8%. Visibility is generally good, with an average of 15.7 miles (25.3 km). The city enjoys an average of 8.1 days with a high UV index greater than 6, putting the severe risk of sunburn and other harmful effects at 51.5%. The average barometric pressure is 1013.9 mb (29.93 in). Houston has 5.8% of precipitation cover in September, meaning that rain or snowfall is observed on 1.8 days of the month on average.

What is the temperature in Houston in September?

Average air temperature in Houston is 29.1°C (84.3°F) in September. The outside temperature in Houston feels like 31.2°C (88.2°F) on a typical September day. The highest average temperature during sunny days is 34.4°C (93.9°F) and feels like 36.4°C (97.6°F). The lowest average temperature after dark is 25.5°C (77.9°F) which feels like 26.6°C (79.9°F).

Daily Temperature in Houston in September 0°C / 32.0°F 10°C / 50.0°F 20°C / 68.0°F 30°C / 86.0°F 40°C / 104.0°F 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

How hot is Houston in September?

The hot temperature in September in Houston rises to 38.7°C (101.7°F) on sunny days with low cloud coverage and 64.9% humidity. During hottest days of September it feels like 41.4 °C (106.5°F). The average maximum temp in Houston is 34.4°C (106.5°F) during day time in September.

How cold is Houston in September?

The coldest temp in Houston in September drops to 22.5°C (72.5°F) during the cold nights. With 25.5km/h (15.8mph) winds and 64.9% humidity it feels like 22.5°C (72.5°F) on the coldest nights. The average minimum temperature is 25.5°C (77.9°F) during night time in September.

Does it rain in Houston in September?

Yes, it rains for 9 days in Houston, United States in September averaging 1.25 mm of precipitation. Houston has a 30% chance for rain throughout the entire month of September.

How much does it rain in Houston throughout September?

Houston has 1.25 mm (0.05 inch) of rain per day on average in September. It rains for an average of 9 days out of the entire month.

Is Houston windy in September?

The average speed of wind in Houston, United States during September is 25.5km/h (15.8mph) and average windgust is 42.3km/h (26.3mph). On some days in September wind can reach up to 40.7km/h (25.3mph).

Daily wind speed in Houston in September 0km/h (0mph) 11km/h (7mph) 22km/h (14mph) 33km/h (21mph) 44km/h (27mph) 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

What is the direction of the wind in Houston in September?

Most days of September the wind is blowing from Southeast direction in Houston.

What are the humidity levels in Houston in September?

The average humidity levels in Houston in September are 64.9%. Daily humidity levels in Houston range from 42.5% to 83.6% during September.

Daily humidity levels in Houston in September 0% 21% 42% 63% 84% 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

How many hours of daylight are in Houston in September?

Houston has 12 hours 20 minutes of daylight in September on average. Sunset and sunrise times gradually change throughout the month. Sunrise in Houston in September is at 7:06:17 and the sunset is at 19:26:22.

What is the cloud coverage in Houston in September?

Clouds cover 35.8% of the sky on average throughout September in Houston. The cloud coverage ranges from 13.9% to 67.9% depending on the day of the month.

What is the UV level in September in Houston?

The average UV index in Houston is 8.1 in September. UV levels change throughout the month and range from 2 to 9.

What is the solar radiation in Houston in September?

The average solar radiation is 136.9 W/m2 (Watts per square meter) in Houston during September. However solar radiation levels change throughout the month and range from 53.7 W/m2 to 189.8 W/m2.

What is the solar energy during September in Houston?

The average solar energy during September in Houston is 11.9 MJ/m2 (megajoules per square metre). Solar energy ranges from 4.6 MJ/m2, to 16.5 MJ/m2 during September.

Are there severe weather risks in Houston in September?

Yes, there is a 51.5% risk for severe weather in Houston, United States in September.

What is the air pressure in Houston in September?

On average the air pressure in Houston in September is 1013.9 mb (millibars). Throughout the month the sea level pressure ranges from 1011.2 mb to 1015.9 mb.

What is the visibility in Houston in September?

The average daylight visibility in Houston in September is 15.7 km (9.7 miles). Depending on the precipitation the visibility ranges from 13.1 km (8.1 miles) to 16 km (9.9 miles) throughout September.

What is the dew point in Houston in September?

The average dew point in Houston during September is 21°C (69.8°F).

Where is the data for Houston climate in September coming from?

The climate data for Houston, Texas, United States in September is collected from the following weather stations.

  • HOUSTON DUNN HELISTOP, TX US
  • HOUSTON INTERCONTINENTAL AIRPORT, TX US
  • HOUSTON WILLIAM P HOBBY AIRPORT, TX US
  • DW0326 Houston TX US
  • EW6288 Houston TX US
  • KHOU
  • KIAH
  • KMCJ