September weather forecast
Omaha, AR

Share

Weather in September

September, the first month of the autumn in Omaha, is still a warm month, with temperature in the range of an average low of 59.9°F (15.5°C) and an average high of 81.5°F (27.5°C).

Temperature

The onset of September results in a small decrease in the average high-temperature, moderately receding from a tropical 88.7°F (31.5°C) in August to a moderately hot 81.5°F (27.5°C). In September, Omaha experiences a significant drop from daily zeniths to an average nighttime temperature of 59.9°F (15.5°C).

Heat index

In September, the heat index is evaluated at a hot 86°F (30°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.

Humidity

In Omaha, the average relative humidity in September is 74%.

Rainfall

In Omaha, Arkansas, in September, during 10.6 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. Throughout the year, in Omaha, there are 131.4 rainfall days, and 24.49" (622mm) of precipitation is accumulated.

Snowfall

June through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 24min.
On the first day of September in Omaha, sunrise is at 6:44 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:57 pm CDT.

Sunshine

In Omaha, Arkansas, the average sunshine in September is 9.5h.

UV index

The average daily maximum UV index in September in Omaha is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the UV index of 5 transforms into the following advice:
Heed the precautions - It is counselled to guard against solar damage. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Enhance your sun protection with tightly woven, yet airy clothing.
[Resources]

Frequently asked questions

What is the usual temperature for Omaha in September?

During September, Omaha experiences an average high-temperature of 81.5°F (27.5°C) and a low-temperature of 59.9°F (15.5°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 evaluated at 86°F (30°C).

What is the average humidity in September in Omaha?

In September, the average relative humidity is 74%.

How much does it rain in Omaha in September?

In Omaha, Arkansas, in September, it is raining for 10.6 days, with typically 1.38" (35mm) of accumulated precipitation.

When it does not snow in Omaha?

June through October are months without snowfall in Omaha.

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

In September, the average day length is 12h and 24min.

When are sunrise and sunset in September in Omaha?

In September, on the first day of the month, sunrise is at 6:44 am and sunset at 7:40 pm. On the last day of the month, in Omaha, sunrise is at 7:07 am and sunset at 6:57 pm CDT.

How long on average sun shines in September in Omaha?

In Omaha, Arkansas, the average sunshine duration in September is 9.5h.

What is the UV index reading in September in Omaha?

The average daily maximum UV index in September in Omaha is 5. A UV Index reading of 3 to 5 represents a medium health risk 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
Omaha, AR

Average temperature in September - Omaha, AR
  • Average high temperature in September: 81.5°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (44.2°F).

  • Average low temperature in September: 59.9°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (28°F).

[Resources]

Average pressure in September
Omaha, AR

Average pressure in September - Omaha, AR
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

[Resources]

Average wind speed in September
Omaha, AR

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

The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

[Resources]

Average humidity in September
Omaha, AR

Average humidity in September - Omaha, AR
  • Average humidity in September: 74%

The months with the highest relative humidity are March and May (77%).
The months with the lowest relative humidity are July and August (72%).

[Resources]

Average rainfall in September
Omaha, AR

Average rainfall in September - Omaha, AR
  • Average rainfall in September: 1.38"

The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is February (1.18").

[Resources]

Average rainfall days in September
Omaha, AR

Average rainfall days in September - Omaha, AR
  • Average rainfall days in September: 10.6 days

The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is December (6.8 days).

[Resources]

Average snowfall in September
Omaha, AR

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

The month with the highest snowfall is February (1.26").
The months with the least snowfall are June, July, August, September and October (0").

[Resources]

Average snowfall days in September
Omaha, AR

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

The months with the highest number of snowfall days are January and February (3.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

[Resources]

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

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

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 9h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

[Resources]

Average sunshine days in September
Omaha, AR

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

The month with the most sunshine days is December (21.5 days).
The month with the least sunshine days is July (12.2 days).

[Resources]

Average UV index in September
Omaha, AR

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

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

[Resources]

Average cloud cover in September
Omaha, AR

Average cloud cover in September - Omaha, AR
  • Average cloud cover in September: 29

The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are June and July (Cloud cover 27).

[Resources]

Average visibility in September
Omaha, AR

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

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

[Resources]

Omaha, Arkansas, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location