September weather forecast
Jonesville, TX

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Weather in September

The first month of the autumn, September, is still a tropical month in Jonesville, Texas, with an average temperature ranging between min 67.3°F (19.6°C) and max 88.3°F (31.3°C).

Temperature

Jonesville observes a small decrease in the average high-temperature with the arrival of September, falling from August's tropical 94.8°F (34.9°C) to a still hot 88.3°F (31.3°C). An average low-temperature of 67.3°F (19.6°C) is noted during the nights in September.

Heat index

In September, the heat index is appraised at a sweltering 100.4°F (38°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is the result of factoring in humidity to the air temperature, indicating perceived warmth. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In Jonesville, Texas, the average relative humidity in September is 69%.

Rainfall

In September, the rain falls for 12 days. Throughout September, 1.57" (40mm) of precipitation is accumulated. In Jonesville, during the entire year, the rain falls for 125.9 days and collects up to 21.06" (535mm) of precipitation.

Snowfall

March through December are months without snowfall.

Daylight

In Jonesville, the average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 6:51 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 7:02 pm CDT.

Sunshine

The average sunshine in September is 9.3h.

UV index

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 in September interprets into the following advice:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in September?

During September, Jonesville experiences an average high-temperature of 88.3°F (31.3°C) and a low-temperature of 67.3°F (19.6°C). In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 100.4°F (38°C).

What is the average humidity in September in Jonesville?

In Jonesville, the average relative humidity in September is 69%.

How many days does it rain in September?

In September, the rain falls for 12 days. Throughout September, 1.57" (40mm) of precipitation is accumulated.

When it does not snow?

March through December are months without snowfall.

What is the average length of the day in September?

The average day length in September is 12h and 22min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:51 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 7:02 pm CDT.

How many hours of sunshine does Jonesville have in September?

The average sunshine duration in September is 9.3h.

How high is the UV index in September?

In Jonesville, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Jonesville, TX

Average temperature in September - Jonesville, TX
  • Average high temperature in September: 88.3°F

The warmest month (with the highest average high temperature) is August (94.8°F).
The month with the lowest average high temperature is January (54.1°F).

  • Average low temperature in September: 67.3°F

The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

Average pressure in September
Jonesville, TX

Average pressure in September - Jonesville, TX
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Jonesville, TX

Average wind speed in September - Jonesville, TX
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest months (with the lowest average wind speed) are August and September (5.2mph).

Average humidity in September
Jonesville, TX

Average humidity in September - Jonesville, TX
  • Average humidity in September: 69%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (67%).

Average rainfall in September
Jonesville, TX

Average rainfall in September - Jonesville, TX
  • Average rainfall in September: 1.57"

The wettest month (with the highest rainfall) is April (2.32").
The driest month (with the least rainfall) is November (1.34").

Average rainfall days in September
Jonesville, TX

Average rainfall days in September - Jonesville, TX
  • Average rainfall days in September: 12 days

The month with the highest number of rainy days is August (12.6 days).
The month with the least rainy days is November (7.8 days).

Average snowfall in September
Jonesville, TX

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

The month with the highest snowfall is February (0.43").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Jonesville, TX

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

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

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

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

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in September: 9h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).

Average sunshine days in September
Jonesville, TX

Average sunshine days in September - Jonesville, TX
  • Average sunshine days in September: 15.4 days

The month with the most sunshine days is October (21.2 days).
The months with the least sunshine days are February and June (15.1 days).

Average UV index in September
Jonesville, TX

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

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in September
Jonesville, TX

Average cloud cover in September - Jonesville, TX
  • Average cloud cover in September: 30

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in September
Jonesville, TX

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

The months with the highest visibility are January, March, April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are February, May and December (5mi).

Jonesville, Texas, USA

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