September weather forecast
Pullman, AR

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Weather in September

The first month of the autumn, September, is also a hot month in Pullman, Arkansas, with an average temperature varying between 65.5°F (18.6°C) and 86.9°F (30.5°C).

Temperature

The shift from August to September coincides with a small decrease in the average high-temperature, down to a still tropical 86.9°F (30.5°C) from a hot 93.2°F (34°C). During September, the average low-temperature is an enjoyable 65.5°F (18.6°C).

Heat index

September's heat index is appraised at a very hot 96.8°F (36°C). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Heat index details are generally centered around shaded locations and a mild breeze. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

In September, the average relative humidity in Pullman is 69%.

Rainfall

September is the month with the least rainfall. Rain falls for 11.1 days and accumulates 1.34" (34mm) of precipitation.

Snowfall

In Pullman, snow does not fall in April through November.

Daylight

The average length of the day in September is 12h and 22min.
On the first day of September, sunrise is at 6:51 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 7:02 pm CDT.

Sunshine

The average sunshine in September is 9.4h.

UV index

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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 during September is 86.9°F (30.5°C) and the low-temperature is 65.5°F (18.6°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is appraised at 96.8°F (36°C).

What is the average humidity in September?

In Pullman, the average relative humidity in September is 69%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 11.1 days and accumulates 1.34" (34mm) of precipitation.

How many days does it rain in September?

In September, the rain falls for 11.1 days. Throughout September, 1.34" (34mm) of precipitation is accumulated.

When it does not snow?

April through November are months without snowfall.

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

In Pullman, Arkansas, the average day length in September is 12h and 22min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:51 am and sunset at 7:42 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 7:02 pm CDT.

How many hours of sunshine does Pullman have in September?

In Pullman, the average sunshine duration in September is 9.4h.

How high is the UV index in September?

In Pullman, 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 exposure to the Sun's 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
Pullman, AR

Average temperature in September - Pullman, AR
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is July (93.4°F).
The month with the lowest average high temperature is January (51.3°F).

  • Average low temperature in September: 65.5°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (34.3°F).

Average pressure in September
Pullman, AR

Average pressure in September - Pullman, AR
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Pullman, AR

Average wind speed in September - Pullman, AR
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in September
Pullman, AR

Average humidity in September - Pullman, AR
  • Average humidity in September: 69%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (68%).

Average rainfall in September
Pullman, AR

Average rainfall in September - Pullman, AR
  • Average rainfall in September: 1.34"

The wettest month (with the highest rainfall) is May (3.98").
The driest month (with the least rainfall) is September (1.34").

Average rainfall days in September
Pullman, AR

Average rainfall days in September - Pullman, AR
  • Average rainfall days in September: 11.1 days

The month with the highest number of rainy days is July (13.7 days).
The month with the least rainy days is January (8.5 days).

Average snowfall in September
Pullman, AR

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

The month with the highest snowfall is February (0.51").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Pullman, AR

Average snowfall days in September - Pullman, AR
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Pullman, 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 2min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).

Average sunshine days in September
Pullman, AR

Average sunshine days in September - Pullman, AR
  • Average sunshine days in September: 16.8 days

The month with the most sunshine days is January (20.5 days).
The months with the least sunshine days are May and August (14.8 days).

Average UV index in September
Pullman, AR

Average UV index in September - Pullman, AR
  • 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 2).

Average cloud cover in September
Pullman, AR

Average cloud cover in September - Pullman, AR
  • Average cloud cover in September: 27

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 26).

Average visibility in September
Pullman, AR

Average visibility in September - Pullman, AR
  • Average visibility in September: 6mi

The months with the highest visibility are January, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February and May (5mi).

Pullman, Arkansas, USA

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