September weather forecast
Arthur, NE

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Weather in September

The first month of the autumn, September, is still a warm month in Arthur, Nebraska, with an average temperature varying between 56.5°F (13.6°C) and 78.3°F (25.7°C).

Temperature

A subtle shift in Arthur's weather is observed as August turns into September, with the average high temperature reducing from 85.6°F (29.8°C) to a still moderately hot 78.3°F (25.7°C). Nighttime temperatures exhibit a substantial dip from daytime highs during September, averaging at a moderate 56.5°F (13.6°C).

Humidity

September is the least humid month, with an average relative humidity of 53%.

Rainfall

In Arthur, in September, it is raining for 9.8 days, with typically 1.02" (26mm) of accumulated precipitation. In Arthur, during the entire year, the rain falls for 117.3 days and collects up to 17.28" (439mm) of precipitation.

Snowfall

In Arthur, snow does not fall in June through September.

Daylight

In Arthur, the average length of the day in September is 12h and 28min.
On the first day of the month, sunrise is at 6:13 am and sunset at 7:19 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:29 pm MDT.

Sunshine

In Arthur, Nebraska, the average sunshine in September is 9.8h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index, 5 during September, leads to the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. To protect against the Sun's most potent rays, avoid direct exposure around midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Updated: Jun 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Arthur in September?

In September, in Arthur, the average high-temperature is 78.3°F (25.7°C), and the average low-temperature is 56.5°F (13.6°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, in August is calculated to be 89.6°F (32°C).

What is the least humid month?

September is the least humid month, with an average relative humidity of 53%.

What is the average humidity in September?

The average relative humidity in September is 53%.

How much does it rain in September?

In Arthur, in September, during 9.8 rainfall days, 1.02" (26mm) of precipitation is typically accumulated.

When it does not snow?

In Arthur, snow does not fall in June through September.

Does it snow in Arthur in September?

In Arthur, Nebraska, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

In Arthur, the average day length in September is 12h and 28min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:13 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 6:29 pm MDT.

How long on average sun shines in September?

The average sunshine duration in September is 9.8h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 5. A UV Index value 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
Arthur, NE

Average temperature in September - Arthur, NE
  • Average high temperature in September: 78.3°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (37.4°F).

  • Average low temperature in September: 56.5°F

The month with the highest average low temperature is July (65.8°F).
The coldest months (with the lowest average low temperature) are January and December (22.3°F).

Average pressure in September
Arthur, NE

Average pressure in September - Arthur, NE
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in September
Arthur, NE

Average wind speed in September - Arthur, NE
  • Average wind speed in September: 10.6mph

The windiest month (with the highest average wind speed) is April (12.6mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).

Average humidity in September
Arthur, NE

Average humidity in September - Arthur, NE
  • Average humidity in September: 53%

The month with the highest relative humidity is January (70%).
The month with the lowest relative humidity is September (53%).

Average rainfall in September
Arthur, NE

Average rainfall in September - Arthur, NE
  • Average rainfall in September: 1.02"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is January (0.39").

Average rainfall days in September
Arthur, NE

Average rainfall days in September - Arthur, NE
  • Average rainfall days in September: 9.8 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is December (3.8 days).

Average snowfall in September
Arthur, NE

Average snowfall in September - Arthur, NE
  • Average snowfall in September: 0"

The month with the highest snowfall is February (3.23").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Arthur, NE

Average snowfall days in September - Arthur, NE
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Arthur, NE

Average daylight in September / Average sunshine in September - Arthur, NE
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in September: 9h and 5min

The months with the most sunshine are July and August (Average sunshine: 11h and 24min).
The month with the least sunshine is February (Average sunshine: 6h and 0min).

Average sunshine days in September
Arthur, NE

Average sunshine days in September - Arthur, NE
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is November (22.7 days).
The months with the least sunshine days are May and June (10.6 days).

Average UV index in September
Arthur, NE

Average UV index in September - Arthur, NE
  • Average UV index in September: 5

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Arthur, NE

Average cloud cover in September - Arthur, NE
  • Average cloud cover in September: 20

The month with the most cloud cover is February (Cloud cover 36).
The months with the least cloud cover are July, August and September (Cloud cover 20).

Average visibility in September
Arthur, NE

Average visibility in September - Arthur, NE
  • 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).

Arthur, Nebraska, USA

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