September weather forecast
Windemere, TX

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Weather in September

The first month of the autumn, September, is still a hot month in Windemere, Texas, with an average temperature ranging between max 88.2°F (31.2°C) and min 70.9°F (21.6°C).

Temperature

With the arrival of September, Windemere experiences a modest decline in average high-temperatures, transitioning from a sweltering 96.1°F (35.6°C) in August to a hot 88.2°F (31.2°C). In Windemere, in September, the average low-temperature is an agreeable 70.9°F (21.6°C).

Heat index

The heat index in September is appraised at a torrid 98.6°F (37°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. 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 frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In Windemere, the average relative humidity in September is 67%.

Rainfall

In Windemere, in September, during 15.1 rainfall days, 3.11" (79mm) of precipitation is typically accumulated. Throughout the year, there are 139.3 rainfall days, and 26.18" (665mm) of precipitation is accumulated.

Snowfall

March through December are months without snowfall.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 7:07 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:16 pm CDT.

Sunshine

In September, the average sunshine is 8.3h.

UV index

In Windemere, Texas, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, the maximum UV index of 6 suggests these recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

The high-temperature, in September, in Windemere, records 88.2°F (31.2°C), while the low-temperature is 70.9°F (21.6°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is appraised at 98.6°F (37°C).

What is the average humidity in September?

The average relative humidity in September is 67%.

How much does it rain in September?

In September, the rain falls for 15.1 days. Throughout September, 3.11" (79mm) of precipitation is accumulated.

When it does not snow?

March through December are months without snowfall.

How many hours of daylight does Windemere have in September?

The average day length in September in Windemere is 12h and 20min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 7:07 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:16 pm CDT.

How many hours of sunshine does Windemere have in September?

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

What is the UV index reading in September?

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health threat 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
Windemere, TX

Average temperature in September - Windemere, TX
  • Average high temperature in September: 88.2°F

The warmest month (with the highest average high temperature) is August (96.1°F).
The month with the lowest average high temperature is January (58.6°F).

  • Average low temperature in September: 70.9°F

The month with the highest average low temperature is August (75.4°F).
The coldest month (with the lowest average low temperature) is January (42.4°F).

Average pressure in September
Windemere, TX

Average pressure in September - Windemere, TX
  • Average pressure in September: 29.96"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
Windemere, TX

Average wind speed in September - Windemere, TX
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is September (6.5mph).

Average humidity in September
Windemere, TX

Average humidity in September - Windemere, TX
  • Average humidity in September: 67%

The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (59%).

Average rainfall in September
Windemere, TX

Average rainfall in September - Windemere, TX
  • Average rainfall in September: 3.11"

The wettest month (with the highest rainfall) is May (4.02").
The driest month (with the least rainfall) is February (1.14").

Average rainfall days in September
Windemere, TX

Average rainfall days in September - Windemere, TX
  • Average rainfall days in September: 15.1 days

The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in September
Windemere, TX

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

The month with the highest snowfall is February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Windemere, TX

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

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

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

Average daylight in September / Average sunshine in September - Windemere, 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 24min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days in September
Windemere, TX

Average sunshine days in September - Windemere, TX
  • Average sunshine days in September: 13.3 days

The month with the most sunshine days is January (21.1 days).
The months with the least sunshine days are April, May and September (13.3 days).

Average UV index in September
Windemere, TX

Average UV index in September - Windemere, 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
Windemere, TX

Average cloud cover in September - Windemere, TX
  • Average cloud cover in September: 32

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 23).

Average visibility in September
Windemere, TX

Average visibility in September - Windemere, 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).

Windemere, Texas, USA

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