September weather forecast
McKenney, VA

Weather in September

September, the first month of the autumn in McKenney, is still a warm month, with an average temperature varying between 81°F (27.2°C) and 62.2°F (16.8°C).

Temperature

In September, the average high-temperature slightly decreases from a tropical 87.4°F (30.8°C) in August to a moderately hot 81°F (27.2°C). In McKenney, in September, the average low-temperature is 62.2°F (16.8°C).

Heat index

In September, the average heat index is calculated to be a hot 86°F (30°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 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, wind, differences in body mass, height, and shape), and activity. 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 McKenney, the average relative humidity in September is 75%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12.8 days and typically collects 1.93" (49mm) of precipitation.

Snowfall

In McKenney, snow does not fall in May through September.

Daylight

The average length of the day in September in McKenney is 12h and 25min.
On the first day of September in McKenney, sunrise is at 6:41 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:56 pm EDT.

Sunshine

In McKenney, the average sunshine in September is 8.6h.

UV index

In McKenney, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 5 in September 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in McKenney?

In McKenney, in September, the average high-temperature is 81°F (27.2°C), and the average low-temperature is 62.2°F (16.8°C). in September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is calculated to be 86°F (30°C).

What is the average humidity in September in McKenney?

In McKenney, the average relative humidity in September is 75%.

What is the driest month in McKenney?

September is the month with the least rainfall in McKenney, Virginia. Rain falls for 12.8 days and accumulates 1.93" (49mm) of precipitation.

How much does it rain in McKenney in September?

In McKenney, Virginia, in September, it is raining for 12.8 days, with typically 1.93" (49mm) of accumulated precipitation.

When it does not snow in McKenney?

May through September are months without snowfall in McKenney, Virginia.

Does it snow in McKenney in September?

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

How many hours of daylight does McKenney have in September?

In September, the average day length is 12h and 25min.

When are sunrise and sunset in September in McKenney?

On the first day of September in McKenney, sunrise is at 6:41 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:56 pm EDT.

How many hours of sunshine does McKenney have in September?

In September, the average sunshine duration is 8.6h.

How high is the UV index in September in McKenney?

In September, the average daily maximum UV index in McKenney is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
McKenney, VA

Average temperature in September - McKenney, VA
  • Average high temperature in September: 81°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in September: 62.2°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (30°F).

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Average pressure in September
McKenney, VA

Average pressure in September - McKenney, VA
  • Average pressure in September: 30.04"Hg

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in September
McKenney, VA

Average wind speed in September - McKenney, VA
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in September
McKenney, VA

Average humidity in September - McKenney, VA
  • Average humidity in September: 75%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (71%).

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Average rainfall in September
McKenney, VA

Average rainfall in September - McKenney, VA
  • Average rainfall in September: 1.93"

The wettest months (with the highest rainfall) are March, May and November (2.68").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in September
McKenney, VA

Average rainfall days in September - McKenney, VA
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (9.3 days).

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Average snowfall in September
McKenney, VA

Average snowfall in September - McKenney, VA
  • Average snowfall in September: 0"

The month with the highest snowfall is March (2.2").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
McKenney, VA

Average snowfall days in September - McKenney, VA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (3.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
McKenney, VA

Average daylight in September / Average sunshine in September - McKenney, VA
  • Average daylight in September: 12h and 25min

The month with the longest days is June (Average daylight: 14h and 40min).
The month with the shortest days is December (Average daylight: 9h and 40min).

  • Average sunshine in September: 8h and 36min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in September
McKenney, VA

Average sunshine days in September - McKenney, VA
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is May (12.3 days).

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Average UV index in September
McKenney, VA

Average UV index in September - McKenney, VA
  • Average UV index in September: 5

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in September
McKenney, VA

Average cloud cover in September - McKenney, VA
  • Average cloud cover in September: 40

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in September
McKenney, VA

Average visibility in September - McKenney, VA
  • Average visibility in September: 5mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

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