September weather forecast
Mountain View, AR

Weather in September

The first month of the autumn, September, is still a warm month in Mountain View, Arkansas, with an average temperature fluctuating between 61.3°F (16.3°C) and 82°F (27.8°C).

Temperature

In Mountain View, Arkansas, the average high-temperature in September slightly decreases from a tropical 89.4°F (31.9°C) in August to a warm 82°F (27.8°C). The average low-temperature, in Mountain View, is 61.3°F (16.3°C).

Heat index

In September, the average heat index is calculated to be a hot 87.6°F (30.9°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 'feels like', 'real feel', 'apparent temperature', or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like differences in body mass, height, and shape, clothing, pregnancy, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. 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 Mountain View, Arkansas, the average relative humidity in September is 75%.

Rainfall

September is the month with the least rainfall. Rain falls for 12.9 days and accumulates 1.97" (50mm) of precipitation.

Snowfall

In Mountain View, snow does not fall in May through October.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of September in Mountain View, Arkansas, sunrise is at 6:40 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:53 pm CDT.

Sunshine

The average sunshine in September is 9.4h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Mountain View?

The average high-temperature, in September, is 82°F (27.8°C), while the average low-temperature is 61.3°F (16.3°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is calculated to be 87.6°F (30.9°C).

What is the average humidity in September in Mountain View?

The average relative humidity in September is 75%.

What is the driest month in Mountain View?

September is the month with the least rainfall. Rain falls for 12.9 days and accumulates 1.97" (50mm) of precipitation.

How many days does it rain in September in Mountain View?

In Mountain View, Arkansas, during September, the rain falls for 12.9 days and regularly aggregates up to 1.97" (50mm) of precipitation.

When it does not snow in Mountain View?

May through October are months without snowfall in Mountain View.

What is the average length of the day in September in Mountain View?

In Mountain View, the average day length in September is 12h and 23min.

When are sunrise and sunset in September in Mountain View?

On the first day of September in Mountain View, sunrise is at 6:40 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:53 pm CDT.

How long on average sun shines in September in Mountain View?

In Mountain View, Arkansas, the average sunshine duration in September is 9.4h.

What is the UV index intensity in September in Mountain View?

In September, the average daily maximum UV index in Mountain View is 5. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.

Average temperature in September
Mountain View, AR

Average temperature in September - Mountain View, AR
  • Average high temperature in September: 82°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in September: 61.3°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
Mountain View, AR

Average pressure in September - Mountain View, AR
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in September
Mountain View, AR

Average wind speed in September - Mountain View, AR
  • Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in September
Mountain View, AR

Average humidity in September - Mountain View, AR
  • Average humidity in September: 75%

The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in September
Mountain View, AR

Average rainfall in September - Mountain View, AR
  • Average rainfall in September: 1.97"

The wettest month (with the highest rainfall) is April (4.21").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in September
Mountain View, AR

Average rainfall days in September - Mountain View, AR
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9.1 days).

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Average snowfall in September
Mountain View, AR

Average snowfall in September - Mountain View, AR
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Mountain View, AR

Average snowfall days in September - Mountain View, AR
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Mountain View, AR

Average daylight in September / Average sunshine in September - Mountain View, AR
  • Average daylight in September: 12h and 23min

The month with the longest days is June (Average daylight: 14h and 33min).
The month with the shortest days is December (Average daylight: 9h and 46min).

  • Average sunshine in September: 9.4h

The months with the most sunshine are June and July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 5.1h).

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Average sunshine days in September
Mountain View, AR

Average sunshine days in September - Mountain View, AR
  • Average sunshine days in September: 14.4 days

The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is August (10.8 days).

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Average UV index in September
Mountain View, AR

Average UV index in September - Mountain View, AR
  • Average UV index in September: 5

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

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Average cloud cover in September
Mountain View, AR

Average cloud cover in September - Mountain View, AR
  • Average cloud cover in September: 29

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 27).

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Average visibility in September
Mountain View, AR

Average visibility in September - Mountain View, AR
  • 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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