Haslet
Texas, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Haslet, TX

September, the first month of the autumn, in Haslet, is also a hot month, with average temperature varying between 69.6°F (20.9°C) and 87.4°F (30.8°C).

Temperature

In Haslet, Texas, the average high-temperature marginally drops, from a sweltering 95.9°F (35.5°C) in August, to a hot 87.4°F (30.8°C). In September, in Haslet, the average low-temperature is 69.6°F (20.9°C).

Heat index

The average heat index is estimated at a sweltering 95.4°F (35.2°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the 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 'feels like', 'real feel', 'felt air temperature', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, clothing, pregnancy). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

In Haslet, the average relative humidity is 63%.

Rainfall

In Haslet, in September, it is raining for 10.7 days, with typically 1.38" (35mm) of accumulated precipitation. Throughout the year, there are 100.6 rainfall days, and 13.94" (354mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Haslet, the average length of the day is 12.4h.

Sunshine

In September, the average sunshine is 8.5h.

UV index

In September, the average daily maximum UV index in Haslet, Texas, is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in September in Haslet?

In September, in Haslet, Texas, the average high-temperature is 87.4°F (30.8°C), and the average low-temperature is 69.6°F (20.9°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that combines air temperature and relative humidity, in September is evaluated at 95.4°F (35.2°C).

What is the average humidity in September in Haslet?

In September, the average relative humidity in Haslet is 63%.

How many days does it rain in September in Haslet?

In Haslet, Texas, during September, the rain falls for 10.7 days and regularly aggregates up to 1.38" (35mm) of precipitation.

When it does not snow in Haslet?

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

How many hours of daylight does Haslet have in September?

In Haslet, Texas, the average length of the day in September is 12.4h.

How long on average sun shines in September in Haslet?

The average sunshine in September is 8.5h.

What is the UV index reading in September in Haslet?

In Haslet, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health threat from the exposure to the Sun's UV radiation.
Average temperature in September - Haslet, TX
  • Average high temperature in September: 87.4°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 (54.5°F).

  • Average low temperature in September: 69.6°F

Months with the highest average low temperature are July and August (75.7°F).
The coldest month (with the lowest average low temperature) is January (38.3°F).

Average humidity in September - Haslet, TX
  • Average humidity in September: 63%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (55%).

Average rainfall in September - Haslet, TX
  • Average rainfall in September: 1.38"

The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is December (0.55").

Average rainfall days in September - Haslet, TX
  • Average rainfall days in September: 10.7 days

The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is January (4 days).

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

The month with the highest snowfall is February (0.31").
Months with the least snowfall are January, April, May, June, July, August, September, October and November (0").

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

The month with the highest number of snowfall days is February (0.8 days).
Months with the least snowfall days are January, April, May, June, July, August, September and October (0 days).

Average daylight in September / Average sunshine in September - Haslet, TX
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 8.5h

The month with the most sunshine is July (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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

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