September weather forecast
Horn Lake, MS

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Weather in September

As Horn Lake eases into September, a gentle wave of relaxation sweeps over summer's warmth. The city witnesses a graceful descent in temperature, rainfall, and humidity, heightening the appeal of outdoor activities. While a notable decline in cloud% augments the city's charm, warmth and sunlight persist, keeping summer memories alive. Despite experiencing a shortened daylight period, the city enjoys an extended sunshine period, creating a balanced outdoor atmosphere. A noticeable shift in September's weather is an alluring dip in nighttime temperature to 65.8°F (18.8°C), subtly hinting a transition towards fall.

Temperature

With the advent of September, Horn Lake experiences an average high-temperature of a moderately hot 84.2°F (29°C), mirroring a close resemblance to the previous month. In Horn Lake, an average low-temperature of 65.8°F (18.8°C) is recorded during September nights.

Heat index

The heat index in September is computed to be a tropical 91.4°F (33°C). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.

Humidity

The average relative humidity in September in Horn Lake is 71%.

Rainfall

In Horn Lake, in September, during 12.3 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. Throughout the year, there are 147.4 rainfall days, and 27.76" (705mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Horn Lake, Mississippi.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 6:33 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:54 am and sunset at 6:45 pm CDT.

Sunshine

In Horn Lake, Mississippi, the average sunshine in September is 9.6h.

UV index

The average daily maximum UV index in September in Horn Lake is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 5 in September translates into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
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Frequently asked questions

How hot does it get in Horn Lake in September?

An average high-temperature, in September, in Horn Lake, is 84.2°F (29°C) and the average low-temperature is 65.8°F (18.8°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, in September is computed to be 91.4°F (33°C).

What is the average humidity in September in Horn Lake?

The average relative humidity in September is 71%.

How many days does it rain in September in Horn Lake?

In Horn Lake, in September, it is raining for 12.3 days, with typically 1.61" (41mm) of accumulated precipitation.

When it does not snow in Horn Lake?

April through October are months without snowfall in Horn Lake.

How many hours of daylight does Horn Lake have in September?

The average day length in September is 12h and 23min.

When are sunrise and sunset in September in Horn Lake?

On the first day of September in Horn Lake, sunrise is at 6:33 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:45 pm CDT.

How many hours of sunshine does Horn Lake have in September?

In Horn Lake, Mississippi, the average sunshine duration in September is 9.6h.

How high is the UV index in September in Horn Lake?

The average daily maximum UV index in September in Horn Lake is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to 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
Horn Lake, MS

Average temperature in September - Horn Lake, MS
  • Average high temperature in September: 84.2°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (47.3°F).

  • Average low temperature in September: 65.8°F

The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (34°F).

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Average pressure in September
Horn Lake, MS

Average pressure in September - Horn Lake, MS
  • Average pressure in September: 30"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in September
Horn Lake, MS

Average wind speed in September - Horn Lake, MS
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is February (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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Average humidity in September
Horn Lake, MS

Average humidity in September - Horn Lake, MS
  • Average humidity in September: 71%

The months with the highest relative humidity are March and December (78%).
The month with the lowest relative humidity is October (69%).

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Average rainfall in September
Horn Lake, MS

Average rainfall in September - Horn Lake, MS
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is April (3.07").
The driest month (with the least rainfall) is January (1.46").

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Average rainfall days in September
Horn Lake, MS

Average rainfall days in September - Horn Lake, MS
  • Average rainfall days in September: 12.3 days

The month with the highest number of rainy days is August (16.4 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in September
Horn Lake, MS

Average snowfall in September - Horn Lake, MS
  • Average snowfall in September: 0"

The months with the highest snowfall are January and February (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Horn Lake, MS

Average snowfall days in September - Horn Lake, MS
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Horn Lake, MS

Average daylight in September / Average sunshine in September - Horn Lake, MS
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in September
Horn Lake, MS

Average sunshine days in September - Horn Lake, MS
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is August (11.7 days).

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Average UV index in September
Horn Lake, MS

Average UV index in September - Horn Lake, MS
  • Average UV index in September: 5

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

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Average cloud cover in September
Horn Lake, MS

Average cloud cover in September - Horn Lake, MS
  • Average cloud cover in September: 28

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in September
Horn Lake, MS

Average visibility in September - Horn Lake, MS
  • 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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Horn Lake, Mississippi, USA

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