September weather forecast and climate
Brownwood, TX

Weather in September

September, the first month of the autumn, in Brownwood, is also a hot month, with temperature in the range of an average low of 68.9°F (20.5°C) and an average high of 87.4°F (30.8°C).

Temperature

In Brownwood, the average high-temperature slightly decreases, from a torrid 95.7°F (35.4°C) in August, to a hot 87.4°F (30.8°C). The average low-temperature, in September, is 68.9°F (20.5°C).

Heat index

In September, the average heat index is calculated to be a tropical 93.9°F (34.4°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors like activity, wind, pregnancy, and metabolic differences affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in Brownwood is 60%.

Rainfall

In Brownwood, during 13.5 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. In Brownwood, Texas, during the entire year, the rain falls for 115.7 days and collects up to 19.96" (507mm) of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

The average length of the day in Brownwood is 12.3h.

Sunshine

The average sunshine in Brownwood is 8.7h.

UV index

In Brownwood, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Brownwood?

The average high-temperature, in September, in Brownwood, is 87.4°F (30.8°C), while the average low-temperature is 68.9°F (20.5°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in September is calculated to be 93.9°F (34.4°C).

What is the average humidity in September in Brownwood?

The average relative humidity in September is 60%.

How much does it rain in Brownwood in September?

In September, in Brownwood, the rain falls for 13.5 days. Throughout September, 1.89" (48mm) of precipitation is accumulated.

When it does not snow in Brownwood?

April through November are months without snowfall.

What is the average length of the day in September in Brownwood?

The average length of the day in September is 12.3h.

How many hours of sunshine does Brownwood have in September?

The average sunshine in September is 8.7h.

What is the UV index reading in September in Brownwood?

In Brownwood, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV rays.

Average temperature in September
Brownwood, TX

Average temperature in September - Brownwood, TX
  • Average high temperature in September: 87.4°F

The warmest month (with the highest average high temperature) is August (95.7°F).
Months with the lowest average high temperature are January and December (58.1°F).

  • Average low temperature in September: 68.9°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (39°F).

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Average pressure in September
Brownwood, TX

Average pressure in September - Brownwood, TX
  • Average pressure in September: 29.96"

The month with the highest atmospheric pressure is January (30.15").
The month with the lowest atmospheric pressure is June (29.88").

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Average wind speed in September
Brownwood, TX

Average wind speed in September - Brownwood, TX
  • Average wind speed in September: 8.3mph

The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is September (8.3mph).

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Average humidity in September
Brownwood, TX

Average humidity in September - Brownwood, TX
  • Average humidity in September: 60%

The month with the highest relative humidity is May (66%).
The month with the lowest relative humidity is August (51%).

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Average rainfall in September
Brownwood, TX

Average rainfall in September - Brownwood, TX
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.94").

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Average rainfall days in September
Brownwood, TX

Average rainfall days in September - Brownwood, TX
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (5.4 days).

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Average snowfall in September
Brownwood, TX

Average snowfall in September - Brownwood, TX
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.83").
Months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Brownwood, TX

Average snowfall days in September - Brownwood, TX
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.3 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Brownwood, TX

Average daylight in September / Average sunshine in September - Brownwood, TX
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.2h).
The month with the shortest days is December (Average daylight: 10.1h).

  • Average sunshine in September: 8.7h

The month with the most sunshine is July (Average sunshine: 11.2h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days in September
Brownwood, TX

Average sunshine days in September - Brownwood, TX
  • Average sunshine days in September: 14.3 days

The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is May (13.4 days).

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Average UV index in September
Brownwood, TX

Average UV index in September - Brownwood, TX
  • Average UV index in September: 6

The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Brownwood, TX

Average cloud cover in September - Brownwood, TX
  • Average cloud cover in September: 28

Months with the most cloud cover are March and May (Cloud cover 34).
The month with the least cloud cover is August (Cloud cover 19).

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Average visibility in September
Brownwood, TX

Average visibility in September - Brownwood, TX
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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