September weather forecast
Bow Valley, NE

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Bow Valley, Nebraska, with an average temperature varying between 55°F (12.8°C) and 75.9°F (24.4°C).

Temperature

September's arrival subtly correlates with a reduction in the average high-temperature, down from a moderately hot 82.2°F (27.9°C) in August to a still warm 75.9°F (24.4°C). During the month of September, the temperature generally drops to a low average of 55°F (12.8°C).

Humidity

In Bow Valley, the average relative humidity in September is 68%.

Rainfall

In September, the rain falls for 11.1 days. Throughout September, 1.61" (41mm) of precipitation is accumulated. Throughout the year, there are 118.7 rainfall days, and 20.79" (528mm) of precipitation is accumulated.

Snowfall

In Bow Valley, snow does not fall in June through September.

Daylight

In Bow Valley, the average length of the day in September is 12h and 29min.
On the first day of September, sunrise is at 6:54 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 7:11 pm CDT.

Sunshine

The average sunshine in September is 8.9h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 5 in September leads to these recommendations:
Undertake precautions - Guarding against sun damage is counselled. To avoid the Sun's strongest rays, limit exposure around the mid-day period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Updated: Jul 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September?

September temperatures in Bow Valley vary between a high-temperature of 75.9°F (24.4°C) and a low-temperature of 55°F (12.8°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 87.8°F (31°C).

What is the average humidity in September?

The average relative humidity in September is 68%.

How many days does it rain in September?

In Bow Valley, in September, it is raining for 11.1 days, with typically 1.61" (41mm) of accumulated precipitation.

When it does not snow?

June through September are months without snowfall.

Does it snow in Bow Valley in September?

In Bow Valley, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

The average day length in September is 12h and 29min.

What time are sunrise and sunset in September in Bow Valley?

In September, on the first day of the month, sunrise is at 6:54 am and sunset at 8:02 pm. On the last day of the month, in Bow Valley, sunrise is at 7:25 am and sunset at 7:11 pm CDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.9h.

What is the UV index intensity in September in Bow Valley?

In Bow Valley, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health risk 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
Bow Valley, NE

Average temperature in September - Bow Valley, NE
  • Average high temperature in September: 75.9°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (27°F).

  • Average low temperature in September: 55°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).

Average pressure in September
Bow Valley, NE

Average pressure in September - Bow Valley, NE
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in September
Bow Valley, NE

Average wind speed in September - Bow Valley, NE
  • Average wind speed in September: 9.4mph

The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is July (8mph).

Average humidity in September
Bow Valley, NE

Average humidity in September - Bow Valley, NE
  • Average humidity in September: 68%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (65%).

Average rainfall in September
Bow Valley, NE

Average rainfall in September - Bow Valley, NE
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is June (3.27").
The driest month (with the least rainfall) is November (0.63").

Average rainfall days in September
Bow Valley, NE

Average rainfall days in September - Bow Valley, NE
  • Average rainfall days in September: 11.1 days

The month with the highest number of rainy days is June (17.8 days).
The months with the least rainy days are January and February (3.3 days).

Average snowfall in September
Bow Valley, NE

Average snowfall in September - Bow Valley, NE
  • Average snowfall in September: 0"

The month with the highest snowfall is February (3.03").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Bow Valley, NE

Average snowfall days in September - Bow Valley, NE
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September /
Average sunshine in September
Bow Valley, NE

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

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in September: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in September
Bow Valley, NE

Average sunshine days in September - Bow Valley, NE
  • Average sunshine days in September: 16.3 days

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (10.2 days).

Average UV index in September
Bow Valley, NE

Average UV index in September - Bow Valley, NE
  • Average UV index in September: 5

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in September
Bow Valley, NE

Average cloud cover in September - Bow Valley, NE
  • Average cloud cover in September: 27

The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 25).

Average visibility in September
Bow Valley, NE

Average visibility in September - Bow Valley, 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).

Bow Valley, Nebraska, USA

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