September weather forecast
Hillsboro, TX

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Weather in September

The first month of the autumn, September, is also a hot month in Hillsboro, Texas, with an average temperature ranging between max 88°F (31.1°C) and min 70.3°F (21.3°C).

Temperature

As Hillsboro, Texas, enters September, the average high-temperature subtly lowers from the a very hot 95.9°F (35.5°C) of August to a hot 88°F (31.1°C). Nighttime temperature lowers to an average of 70.3°F (21.3°C) in September.

Heat index

The heat index for September is calculated to be a sweltering 96.8°F (36°C). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In Hillsboro, the average relative humidity in September is 65%.

Rainfall

In Hillsboro, in September, during 14.8 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. In Hillsboro, during the entire year, the rain falls for 139.8 days and collects up to 32.28" (820mm) of precipitation.

Snowfall

January, April through November are months without snowfall in Hillsboro, Texas.

Daylight

In Hillsboro, the average length of the day in September is 12h and 21min.
On the first day of the month, sunrise is at 7:04 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:14 pm CDT.

Sunshine

The average sunshine in September is 8.3h.

UV index

In Hillsboro, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in September interprets into the following advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September in Hillsboro?

The average high-temperature, in September, in Hillsboro, is 88°F (31.1°C), while the average low-temperature is 70.3°F (21.3°C). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is calculated to be 96.8°F (36°C).

What is the average humidity in September in Hillsboro?

In Hillsboro, Texas, the average relative humidity in September is 65%.

How many days does it rain in September in Hillsboro?

In September, in Hillsboro, Texas, the rain falls for 14.8 days. Throughout September, 2.8" (71mm) of precipitation is accumulated.

When it does not snow in Hillsboro?

In Hillsboro, snow does not fall in January, April through November.

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

In September, the average day length in Hillsboro is 12h and 21min.

When is the sunrise / sunset in September in Hillsboro?

In September, on the first day of the month, sunrise is at 7:04 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:14 pm CDT.

How many hours of sunshine does Hillsboro have in September?

In September, the average sunshine duration in Hillsboro, Texas, is 8.3h.

How high is the UV index in September in Hillsboro?

In Hillsboro, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
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
Hillsboro, TX

Average temperature in September - Hillsboro, TX
  • Average high temperature in September: 88°F

The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (55.9°F).

  • Average low temperature in September: 70.3°F

The month with the highest average low temperature is August (75.9°F).
The coldest month (with the lowest average low temperature) is January (39.9°F).

Average pressure in September
Hillsboro, TX

Average pressure in September - Hillsboro, TX
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in September
Hillsboro, TX

Average wind speed in September - Hillsboro, TX
  • Average wind speed in September: 6.9mph

The windiest month (with the highest average wind speed) is March (10.6mph).
The calmest month (with the lowest average wind speed) is September (6.9mph).

Average humidity in September
Hillsboro, TX

Average humidity in September - Hillsboro, TX
  • Average humidity in September: 65%

The month with the highest relative humidity is May (76%).
The month with the lowest relative humidity is August (57%).

Average rainfall in September
Hillsboro, TX

Average rainfall in September - Hillsboro, TX
  • Average rainfall in September: 2.8"

The wettest month (with the highest rainfall) is October (4.53").
The driest month (with the least rainfall) is November (1.77").

Average rainfall days in September
Hillsboro, TX

Average rainfall days in September - Hillsboro, TX
  • Average rainfall days in September: 14.8 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in September
Hillsboro, TX

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

The month with the highest snowfall is February (0.55").
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Hillsboro, TX

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

The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

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

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

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in September
Hillsboro, TX

Average sunshine days in September - Hillsboro, TX
  • Average sunshine days in September: 13.8 days

The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is May (13.6 days).

Average UV index in September
Hillsboro, TX

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

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

Average cloud cover in September
Hillsboro, TX

Average cloud cover in September - Hillsboro, TX
  • Average cloud cover in September: 31

The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 22).

Average visibility in September
Hillsboro, TX

Average visibility in September - Hillsboro, 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).

Hillsboro, Texas, USA

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