September weather forecast
Nineveh, TX

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Weather in September

The first month of the autumn, September, is still a tropical month in Nineveh, Texas, with an average temperature varying between 68.9°F (20.5°C) and 88.7°F (31.5°C).

Temperature

Start of September brings a slight shift in the average high-temperature, dipping a bit from August's very hot 95.9°F (35.5°C) to a hot 88.7°F (31.5°C). The nighttime temperature, during September, averages of 68.9°F (20.5°C).

Heat index

September's mean heat index is calculated to be a fiery hot 102.2°F (39°C). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
Remember that heat index calculations are made for conditions in the shade with light wind. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In September, the average relative humidity is 70%.

Rainfall

In September, the rain falls for 15.5 days. Throughout September, 2.56" (65mm) of precipitation is accumulated. Throughout the year, there are 149.4 rainfall days, and 30" (762mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January, February and September. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Nineveh, during the entire year, snow falls for 1.1 days and aggregates up to 0.47" (12mm) of snow.

Daylight

In Nineveh, the average length of the day in September is 12h and 21min.
On the first day of the month, sunrise is at 6:59 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:09 pm CDT.

Sunshine

The average sunshine in September is 8.4h.

UV index

In September, the average daily maximum UV index in Nineveh is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.
Note: The UV index of 6 in September translates into these instructions:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

The average high-temperature and low-temperature during September are 88.7°F (31.5°C) and 68.9°F (20.5°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 102.2°F (39°C).

What is the average humidity in September?

In September, the average relative humidity is 70%.

How much does it rain in September?

In Nineveh, in September, it is raining for 15.5 days, with typically 2.56" (65mm) of accumulated precipitation.

When does it start snowing?

September is the first month it typically snows in Nineveh, Texas. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

What is the average length of the day in September?

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

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:59 am and sunset at 7:46 pm. On the last day of the month, in Nineveh, sunrise is at 7:16 am and sunset at 7:09 pm CDT.

How many hours of sunshine does Nineveh have in September?

In Nineveh, the average sunshine duration in September is 8.4h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability 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
Nineveh, TX

Average temperature in September - Nineveh, TX
  • Average high temperature in September: 88.7°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 (56.8°F).

  • Average low temperature in September: 68.9°F

The month with the highest average low temperature is August (73.9°F).
The coldest month (with the lowest average low temperature) is January (40.8°F).

Average pressure in September
Nineveh, TX

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

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Nineveh, TX

Average wind speed in September - Nineveh, TX
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).

Average humidity in September
Nineveh, TX

Average humidity in September - Nineveh, TX
  • Average humidity in September: 70%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (65%).

Average rainfall in September
Nineveh, TX

Average rainfall in September - Nineveh, TX
  • Average rainfall in September: 2.56"

The wettest month (with the highest rainfall) is October (3.62").
The driest month (with the least rainfall) is February (1.69").

Average rainfall days in September
Nineveh, TX

Average rainfall days in September - Nineveh, TX
  • Average rainfall days in September: 15.5 days

The month with the highest number of rainy days is September (15.5 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in September
Nineveh, TX

Average snowfall in September - Nineveh, TX
  • Average snowfall in September: 0.04"

The month with the highest snowfall is February (0.28").
The months with the least snowfall are March, April, May, June, July, August, October, November and December (0").

Average snowfall days in September
Nineveh, TX

Average snowfall days in September - Nineveh, TX
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are March, April, May, June, July, August, October and November (0 days).

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

Average daylight in September / Average sunshine in September - Nineveh, 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 August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).

Average sunshine days in September
Nineveh, TX

Average sunshine days in September - Nineveh, TX
  • Average sunshine days in September: 12.6 days

The month with the most sunshine days is January (19.8 days).
The month with the least sunshine days is September (12.6 days).

Average UV index in September
Nineveh, TX

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

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

Average cloud cover in September
Nineveh, TX

Average cloud cover in September - Nineveh, TX
  • Average cloud cover in September: 33

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in September
Nineveh, TX

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

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

Nineveh, Texas, USA

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