September weather forecast
Kerrville, TX

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Weather in September

September, the first month of the autumn in Kerrville, is also a moderately hot month, with an average temperature ranging between max 85.3°F (29.6°C) and min 67.1°F (19.5°C).

Temperature

Kerrville in September experiences a gentle temperature dip, with average high-temperatures reducing from a tropical 92.8°F (33.8°C) in August to a moderately hot 85.3°F (29.6°C). Kerrville observes an average nighttime low-temperature of 67.1°F (19.5°C) during the month of September.

Heat index

In September, the heat index is calculated to be a tropical 93.2°F (34°C). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

In September, the average relative humidity is 68%.

Rainfall

In Kerrville, during September, the rain falls for 14.6 days and regularly aggregates up to 2.05" (52mm) of precipitation. In Kerrville, during the entire year, the rain falls for 135.4 days and collects up to 18.27" (464mm) of precipitation.

Snowfall

In Kerrville, snow does not fall in March through October.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 7:13 am and sunset at 7:58 pm. On the last day of September, sunrise is at 7:29 am and sunset at 7:22 pm CDT.

Sunshine

The average sunshine in September is 8.4h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, an average UV index of 6 transforms into the following instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Frequently asked questions

Is it hot in Kerrville during September?

In September, the average high-temperature and low-temperature in Kerrville, Texas, are 85.3°F (29.6°C) and 67.1°F (19.5°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, in September is calculated to be 93.2°F (34°C).

What is the average humidity in September in Kerrville?

In September, the average relative humidity in Kerrville is 68%.

How much does it rain in Kerrville in September?

In Kerrville, during September, the rain falls for 14.6 days and regularly aggregates up to 2.05" (52mm) of precipitation.

When it does not snow in Kerrville?

March through October are months without snowfall.

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

In Kerrville, the average day length in September is 12h and 20min.

What time are sunrise and sunset in September in Kerrville?

On the first day of September in Kerrville, sunrise is at 7:13 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:22 pm CDT.

How many hours of sunshine does Kerrville have in September?

The average sunshine duration in September in Kerrville is 8.4h.

How high is the UV index in September in Kerrville?

In September, the average daily maximum UV index in Kerrville, Texas, is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Kerrville, TX

Average temperature in September - Kerrville, TX
  • Average high temperature in September: 85.3°F

The warmest month (with the highest average high temperature) is August (92.8°F).
The month with the lowest average high temperature is January (58.6°F).

  • Average low temperature in September: 67.1°F

The month with the highest average low temperature is August (71.6°F).
The coldest month (with the lowest average low temperature) is January (40.6°F).

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Average pressure in September
Kerrville, TX

Average pressure in September - Kerrville, TX
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in September
Kerrville, TX

Average wind speed in September - Kerrville, TX
  • Average wind speed in September: 7.5mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is September (7.5mph).

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Average humidity in September
Kerrville, TX

Average humidity in September - Kerrville, TX
  • Average humidity in September: 68%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (60%).

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Average rainfall in September
Kerrville, TX

Average rainfall in September - Kerrville, TX
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is November (0.87").

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Average rainfall days in September
Kerrville, TX

Average rainfall days in September - Kerrville, TX
  • Average rainfall days in September: 14.6 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (7.8 days).

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Average snowfall in September
Kerrville, TX

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

The month with the highest snowfall is February (0.16").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

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Average snowfall days in September
Kerrville, TX

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

The month with the highest number of snowfall days is January (0.7 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Kerrville, TX
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are November and December (Average sunshine: 5h and 48min).

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Average sunshine days in September
Kerrville, TX

Average sunshine days in September - Kerrville, TX
  • Average sunshine days in September: 12.2 days

The month with the most sunshine days is January (21.2 days).
The month with the least sunshine days is May (12.1 days).

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Average UV index in September
Kerrville, TX

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

The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Kerrville, TX

Average cloud cover in September - Kerrville, TX
  • Average cloud cover in September: 35

The month with the most cloud cover is May (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 24).

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Average visibility in September
Kerrville, TX

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

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

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Kerrville, Texas, USA

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