September weather forecast and climate
McCook, NE

Weather in September

September, the first month of the autumn, in McCook, is also a moderately hot month, with average temperature ranging between max 80.6°F (27°C) and min 59.2°F (15.1°C).

Temperature

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

Heat index

In September, the average heat index is appraised at 81.9°F (27.7°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'felt air temperature', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, clothing, differences in body mass, height, and shape), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In September, the average relative humidity is 55%.

Rainfall

In McCook, in September, during 9.4 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In McCook, during the entire year, the rain falls for 103 days and collects up to 15.94" (405mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In McCook, the average length of the day is 12.4h.

Sunshine

In September, the average sunshine in McCook is 9.1h.

UV index

In McCook, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in McCook?

In September, the average high-temperature is 80.6°F (27°C), and the average low-temperature is 59.2°F (15.1°C). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), that combines air temperature and relative humidity, is appraised at 81.9°F (27.7°C).

What is the average humidity in September in McCook?

The average relative humidity in September is 55%.

How much does it rain in McCook in September?

In September, the rain falls for 9.4 days. Throughout September, 1.02" (26mm) of precipitation is accumulated.

Does it snow in McCook in September?

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

When it does not snow in McCook?

June through September are months without snowfall.

How many hours of daylight does McCook have in September?

In September, the average length of the day in McCook is 12.4h.

How many hours of sunshine does McCook have in September?

In September, the average sunshine in McCook, Nebraska, is 9.1h.

What is the UV index intensity in September in McCook?

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.

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"

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

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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%).
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").
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).
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: 12.4h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 9.1h

The month with the most sunshine is July (Average sunshine: 11.4h).
The month with the least sunshine is January (Average sunshine: 6.2h).

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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

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).
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

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

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