September weather forecast
McCook, NE

Weather in September

September, the first month of the autumn in McCook, is still a warm month, with temperature in the range of an average high of 80.6°F (27°C) and an average low of 59.2°F (15.1°C).

Temperature

In McCook, the average high-temperature in September marginally drops from a tropical 88.3°F (31.3°C) in August to a warm 80.6°F (27°C). In September, in McCook, the average low-temperature is 59.2°F (15.1°C).

Heat index

In September, the average heat index is evaluated at 82.4°F (28°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors like activity, differences in body mass, height, and shape, wind, and pregnancy affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In September, the average relative humidity in McCook is 55%.

Rainfall

In September, the rain falls for 9.4 days. Throughout September, 1.02" (26mm) of precipitation is accumulated. Throughout the year, in McCook, there are 103 rainfall days, and 15.94" (405mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in McCook, Nebraska.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of September in McCook, Nebraska, sunrise is at 7:10 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 7:26 pm CDT.

Sunshine

In September, the average sunshine is 9.1h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The average daily UV index of 5 in September transform into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in McCook?

The average high-temperature, in September, in McCook, Nebraska, is 80.6°F (27°C), while the average low-temperature is 59.2°F (15.1°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in September is evaluated at 82.4°F (28°C).

What is the average humidity in September in McCook?

The average relative humidity in September in McCook, Nebraska, is 55%.

How many days does it rain in September in McCook?

In McCook, in September, during 9.4 rainfall days, 1.02" (26mm) of precipitation is typically accumulated.

When it does not snow in McCook?

June through September are months without snowfall in McCook, Nebraska.

Does it snow in McCook in September?

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

How many hours of daylight does McCook have in September?

The average day length in September in McCook is 12h and 26min.

What time are sunrise and sunset in September in McCook?

In September, on the first day of the month, sunrise is at 7:10 am and sunset at 8:14 pm. On the last day of the month, in McCook, sunrise is at 7:38 am and sunset at 7:26 pm CDT.

How many hours of sunshine does McCook have in September?

The average sunshine duration in September is 9.1h.

What is the UV index reading in September in McCook?

In September, the average daily maximum UV index in McCook is 5. A UV Index estimate 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
McCook, NE

Average temperature in September - McCook, NE
  • Average high temperature in September: 80.6°F

The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is December (39.4°F).

  • Average low temperature in September: 59.2°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

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Average pressure in September
McCook, NE

Average pressure in September - McCook, NE
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

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Average wind speed in September
McCook, NE

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

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).

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Average humidity in September
McCook, NE

Average humidity in September - McCook, NE
  • Average humidity in September: 55%

The month with the highest relative humidity is January (68%).
The months with the lowest relative humidity are July and October (54%).

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Average rainfall in September
McCook, NE

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

The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.35").

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Average rainfall days in September
McCook, NE

Average rainfall days in September - McCook, NE
  • Average rainfall days in September: 9.4 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is February (2.1 days).

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Average snowfall in September
McCook, NE

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

The month with the highest snowfall is February (2.13").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
McCook, NE

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

The month with the highest number of snowfall days is February (6.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - McCook, NE
  • Average daylight in September: 12h and 26min

The month with the longest days is June (Average daylight: 14h and 59min).
The month with the shortest days is December (Average daylight: 9h and 22min).

  • Average sunshine in September: 9h and 6min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).

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Average sunshine days in September
McCook, NE

Average sunshine days in September - McCook, NE
  • Average sunshine days in September: 17.1 days

The months with the most sunshine days are January and November (24.3 days).
The month with the least sunshine days is August (13.1 days).

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Average UV index in September
McCook, NE

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

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

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Average cloud cover in September
McCook, NE

Average cloud cover in September - McCook, NE
  • Average cloud cover in September: 21

The month with the most cloud cover is February (Cloud cover 35).
The month with the least cloud cover is June (Cloud cover 20).

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Average visibility in September
McCook, NE

Average visibility in September - McCook, 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).

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