September weather forecast
Blackfoot, AR

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Weather in September

September, the first month of the autumn in Blackfoot, is still a warm month, with temperature in the range of an average high of 84.2°F (29°C) and an average low of 66°F (18.9°C).

Temperature

With September's arrival, Blackfoot notes an average high-temperature of a warm 84.2°F (29°C), closely following the trend of the preceding month. In September, the nighttime temperature in Blackfoot lowers to an average of 66°F (18.9°C).

Heat index

The heat index value for September is computed to be a tropical 91.4°F (33°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

The average relative humidity in September in Blackfoot is 73%.

Rainfall

The month with the least rainfall is September, when the rain falls for 10.5 days and typically collects 1.1" (28mm) of precipitation.

Snowfall

In Blackfoot, snow does not fall in April through October.

Daylight

In September, the average length of the day in Blackfoot is 12h and 23min.
On the first day of the month, sunrise is at 6:36 am and sunset at 7:29 pm. On the last day of September, in Blackfoot, sunrise is at 6:57 am and sunset at 6:48 pm CDT.

Sunshine

In September, the average sunshine is 9.8h.

UV index

In Blackfoot, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The UV index of 5 during September translates into the following guidance:
Undertake precautions - Obligation exists to protect against skin and eye damage. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

Is it hot in Blackfoot during September?

The average high-temperature and low-temperature in Blackfoot, Arkansas, during September are 84.2°F (29°C) and 66°F (18.9°C) respectively. In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is computed to be 91.4°F (33°C).

What is the average humidity in September in Blackfoot?

In Blackfoot, Arkansas, the average relative humidity in September is 73%.

What is the driest month in Blackfoot?

The month with the least rainfall in Blackfoot, Arkansas, is September, when the rain falls for 10.5 days and typically collects 1.1" (28mm) of precipitation.

How much does it rain in Blackfoot in September?

In Blackfoot, Arkansas, during September, the rain falls for 10.5 days and regularly aggregates up to 1.1" (28mm) of precipitation.

When it does not snow in Blackfoot?

In Blackfoot, snow does not fall in April through October.

What is the average length of the day in September in Blackfoot?

In September, the average day length in Blackfoot is 12h and 23min.

When are sunrise and sunset in September in Blackfoot?

In September, on the first day of the month, sunrise is at 6:36 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:48 pm CDT.

How many hours of sunshine does Blackfoot have in September?

In Blackfoot, Arkansas, the average sunshine duration in September is 9.8h.

How high is the UV index in September in Blackfoot?

In September, the average daily maximum UV index in Blackfoot is 5. A UV Index of 3 to 5 symbolizes a moderate 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
Blackfoot, AR

Average temperature in September - Blackfoot, AR
  • Average high temperature in September: 84.2°F

The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (48.2°F).

  • Average low temperature in September: 66°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (35.4°F).

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Average pressure in September
Blackfoot, AR

Average pressure in September - Blackfoot, AR
  • Average pressure in September: 30"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in September
Blackfoot, AR

Average wind speed in September - Blackfoot, AR
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in September
Blackfoot, AR

Average humidity in September - Blackfoot, AR
  • Average humidity in September: 73%

The months with the highest relative humidity are March and December (78%).
The month with the lowest relative humidity is October (67%).

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Average rainfall in September
Blackfoot, AR

Average rainfall in September - Blackfoot, AR
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is April (2.72").
The driest month (with the least rainfall) is September (1.1").

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Average rainfall days in September
Blackfoot, AR

Average rainfall days in September - Blackfoot, AR
  • Average rainfall days in September: 10.5 days

The month with the highest number of rainy days is July (15 days).
The month with the least rainy days is November (7.7 days).

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Average snowfall in September
Blackfoot, AR

Average snowfall in September - Blackfoot, AR
  • Average snowfall in September: 0"

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

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Average snowfall days in September
Blackfoot, AR

Average snowfall days in September - Blackfoot, AR
  • 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 and September (0 days).

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Average daylight in September /
Average sunshine in September
Blackfoot, AR

Average daylight in September / Average sunshine in September - Blackfoot, AR
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in September
Blackfoot, AR

Average sunshine days in September - Blackfoot, AR
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is October (21.8 days).
The month with the least sunshine days is July (13.3 days).

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Average UV index in September
Blackfoot, AR

Average UV index in September - Blackfoot, AR
  • Average UV index in September: 5

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in September
Blackfoot, AR

Average cloud cover in September - Blackfoot, AR
  • Average cloud cover in September: 28

The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 25).

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Average visibility in September
Blackfoot, AR

Average visibility in September - Blackfoot, AR
  • 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).

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Blackfoot, Arkansas, USA

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