September weather forecast
Bertram, TX

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Weather in September

The first month of the autumn, September, is still a tropical month in Bertram, Texas, with an average temperature ranging between min 69.3°F (20.7°C) and max 87.3°F (30.7°C).

Temperature

Transition into September subtly marks a drop in the average high-temperature, moderately moving from a torrid 95.2°F (35.1°C) in August to a tropical 87.3°F (30.7°C). Bertram experiences a mean low-temperature of 69.3°F (20.7°C) during September.

Heat index

The heat index value for September is appraised at a very hot 96.8°F (36°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
In the scope of the heat index, its values resonate with shade and light wind conditions. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In Bertram, the average relative humidity in September is 66%.

Rainfall

In Bertram, in September, during 14.4 rainfall days, 2.8" (71mm) of precipitation is typically accumulated. In Bertram, during the entire year, the rain falls for 133.6 days and collects up to 24.17" (614mm) of precipitation.

Snowfall

In Bertram, snow does not fall in March through November.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 7:09 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:25 am and sunset at 7:18 pm CDT.

Sunshine

In Bertram, the average sunshine in September is 8.5h.

UV index

In Bertram, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: In September, an average UV index of 6 transforms into the following instructions:
Deflect overexposure. Sun protection is a necessity. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot in Bertram during September?

In September, in Bertram, the average high-temperature is 87.3°F (30.7°C), and the average low-temperature is 69.3°F (20.7°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in September is appraised at 96.8°F (36°C).

What is the average humidity in September in Bertram?

In Bertram, the average relative humidity in September is 66%.

How many days does it rain in September in Bertram?

In Bertram, in September, during 14.4 rainfall days, 2.8" (71mm) of precipitation is typically accumulated.

When it does not snow in Bertram?

In Bertram, snow does not fall in March through November.

How many hours of daylight does Bertram have in September?

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

What time are sunrise and sunset in September in Bertram?

In September, on the first day of the month, sunrise is at 7:09 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:18 pm CDT.

How long on average sun shines in September in Bertram?

The average sunshine duration in September in Bertram is 8.5h.

What is the UV index reading in September in Bertram?

The average daily maximum UV index in September in Bertram is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from 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
Bertram, TX

Average temperature in September - Bertram, TX
  • Average high temperature in September: 87.3°F

The warmest month (with the highest average high temperature) is August (95.2°F).
The month with the lowest average high temperature is January (58.6°F).

  • Average low temperature in September: 69.3°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (41°F).

Average pressure in September
Bertram, TX

Average pressure in September - Bertram, TX
  • Average pressure in September: 29.96"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are May and June (29.91"Hg).

Average wind speed in September
Bertram, TX

Average wind speed in September - Bertram, TX
  • Average wind speed in September: 6.8mph

The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).

Average humidity in September
Bertram, TX

Average humidity in September - Bertram, TX
  • Average humidity in September: 66%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (57%).

Average rainfall in September
Bertram, TX

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

The wettest month (with the highest rainfall) is May (4.17").
The driest months (with the least rainfall) are February and November (1.06").

Average rainfall days in September
Bertram, TX

Average rainfall days in September - Bertram, TX
  • Average rainfall days in September: 14.4 days

The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (7.4 days).

Average snowfall in September
Bertram, TX

Average snowfall in September - Bertram, 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 and November (0").

Average snowfall days in September
Bertram, TX

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

The month with the highest number of snowfall days is February (0.7 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
Bertram, TX

Average daylight in September / Average sunshine in September - Bertram, 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 3min

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 36min).

Average sunshine days in September
Bertram, TX

Average sunshine days in September - Bertram, TX
  • Average sunshine days in September: 13.4 days

The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is May (12.2 days).

Average UV index in September
Bertram, TX

Average UV index in September - Bertram, 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
Bertram, TX

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

The months with the most cloud cover are March and May (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 21).

Average visibility in September
Bertram, TX

Average visibility in September - Bertram, 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).

Bertram, Texas, USA

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