September weather forecast
Blum, TX

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Weather in September

The first month of the autumn, September, is still a tropical month in Blum, Texas, with an average temperature varying between 70.3°F (21.3°C) and 88.2°F (31.2°C).

Temperature

September sees a slight reduction in average high-temperature, with a shift from a fiery hot 96.1°F (35.6°C) in August to a hot 88.2°F (31.2°C). Throughout September, Blum anticipates an average low-temperature of 70.3°F (21.3°C).

Heat index

September's mean heat index is computed to be a torrid 96.8°F (36°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

In Blum, the average relative humidity in September is 64%.

Rainfall

In Blum, in September, during 14.6 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, in Blum, there are 136 rainfall days, and 29.25" (743mm) of precipitation is accumulated.

Snowfall

January, April through November are months without snowfall.

Daylight

The average length of the day in September is 12h and 21min.
On the first day of the month, sunrise is at 7:05 am and sunset at 7:53 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:15 pm CDT.

Sunshine

In September, the average sunshine is 8.5h.

UV index

In Blum, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 6 in September translates into this advice:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in September?

The high-temperature, in September, in Blum, records 88.2°F (31.2°C), while the low-temperature is 70.3°F (21.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is computed to be 96.8°F (36°C).

What is the average humidity in September?

In September, the average relative humidity is 64%.

How many days does it rain in September?

In Blum, in September, during 14.6 rainfall days, 2.56" (65mm) of precipitation is typically accumulated.

When it does not snow?

January, April through November are months without snowfall.

How many hours of daylight does Blum have in September?

The average day length in September in Blum is 12h and 21min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 7:05 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:15 pm CDT.

How many hours of sunshine does Blum have in September?

The average sunshine duration in September is 8.5h.

How high is the UV index in September?

In Blum, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to 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
Blum, TX

Average temperature in September - Blum, 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 (56.1°F).

  • Average low temperature in September: 70.3°F

The month with the highest average low temperature is August (75.9°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).

Average pressure in September
Blum, TX

Average pressure in September - Blum, TX
  • Average pressure in September: 29.97"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
Blum, TX

Average wind speed in September - Blum, TX
  • Average wind speed in September: 6.9mph

The windiest month (with the highest average wind speed) is March (10.6mph).
The calmest month (with the lowest average wind speed) is September (6.9mph).

Average humidity in September
Blum, TX

Average humidity in September - Blum, TX
  • Average humidity in September: 64%

The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (56%).

Average rainfall in September
Blum, TX

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

The wettest month (with the highest rainfall) is October (4.17").
The driest month (with the least rainfall) is November (1.54").

Average rainfall days in September
Blum, TX

Average rainfall days in September - Blum, TX
  • Average rainfall days in September: 14.6 days

The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (7.1 days).

Average snowfall in September
Blum, TX

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

The month with the highest snowfall is February (0.47").
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Blum, TX

Average snowfall days in September - Blum, 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, October and November (0 days).

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

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

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in September
Blum, TX

Average sunshine days in September - Blum, TX
  • Average sunshine days in September: 13.1 days

The month with the most sunshine days is January (22.4 days).
The month with the least sunshine days is September (13.1 days).

Average UV index in September
Blum, TX

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

The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in September
Blum, TX

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

The month with the most cloud cover is March (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 22).

Average visibility in September
Blum, TX

Average visibility in September - Blum, 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).

Blum, Texas, USA

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