September weather forecast
Sidney, NE

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Weather in September

September introduces a subtle transition from summer to autumn in Sidney, Nebraska. The month brings a gradual decrease in temperatures to 77.9°F (25.5°C), providing a respite from the intense summer heat of previous months. Evenings tend to be on the cooler side, leading to a soothing climate that's popular for outdoor dining and living. Escalating autumn hues interspersed with the abundant greenery make a captivating spectacle, enhancing the city's aesthetic appeal. The temperature shift marks the onset of the harvest season, leading to several cultural and food festivals in the region.

Temperature

As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a warm 85.5°F (29.7°C) to a still moderately hot 77.9°F (25.5°C). Sidney sees a consistent average low-temperature of 56.1°F (13.4°C) in September, indicating a substantial decrease from the day's temperature.

Humidity

The least humid month is September, with an average relative humidity of 48%.

Rainfall

In Sidney, during September, the rain falls for 9.5 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Sidney, during the entire year, the rain falls for 105.9 days and collects up to 15.94" (405mm) of precipitation.

Snowfall

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

Daylight

In Sidney, the average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 6:19 am and sunset at 7:24 pm. On the last day of September, sunrise is at 6:48 am and sunset at 6:34 pm MDT.

Sunshine

In Sidney, the average sunshine in September is 10.2h.

UV index

In Sidney, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: A typical high UV index of 5 in September suggests the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Updated: Jun 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

An average high-temperature, in September, in Sidney, is 77.9°F (25.5°C) and the average low-temperature is 56.1°F (13.4°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is evaluated at 86°F (30°C).

What is the least humid month?

The least humid month is September, with an average relative humidity of 48%.

What is the average humidity in September?

The average relative humidity in September is 48%.

How many days does it rain in September?

In September, the rain falls for 9.5 days. Throughout September, 1.1" (28mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

Does it snow in September?

In Sidney, 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 27min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:19 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:34 pm MDT.

How many hours of sunshine does Sidney have in September?

In Sidney, the average sunshine duration in September is 10.2h.

How high is the UV index in September in Sidney?

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium 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
Sidney, NE

Average temperature in September - Sidney, NE
  • Average high temperature in September: 77.9°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is December (37.4°F).

  • Average low temperature in September: 56.1°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is December (22.3°F).

Average pressure in September
Sidney, NE

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

The months with the highest atmospheric pressure are January and December (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in September
Sidney, NE

Average wind speed in September - Sidney, NE
  • Average wind speed in September: 10.3mph

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
Sidney, NE

Average humidity in September - Sidney, NE
  • Average humidity in September: 48%

The month with the highest relative humidity is February (67%).
The month with the lowest relative humidity is September (48%).

Average rainfall in September
Sidney, NE

Average rainfall in September - Sidney, NE
  • Average rainfall in September: 1.1"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is January (0.35").

Average rainfall days in September
Sidney, NE

Average rainfall days in September - Sidney, NE
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is December (3.5 days).

Average snowfall in September
Sidney, NE

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

The month with the highest snowfall is February (3.35").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in September
Sidney, NE

Average snowfall days in September - Sidney, NE
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in September / Average sunshine in September - Sidney, 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 18min).

  • Average sunshine in September: 10h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 6h and 6min).

Average sunshine days in September
Sidney, NE

Average sunshine days in September - Sidney, NE
  • Average sunshine days in September: 17.2 days

The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is May (12.4 days).

Average UV index in September
Sidney, NE

Average UV index in September - Sidney, 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
Sidney, NE

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

The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 18).

Average visibility in September
Sidney, NE

Average visibility in September - Sidney, 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).

Sidney, Nebraska, USA

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