Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's advent in Horn Lake, Mississippi, denotes a minor fluctuation in the average high-temperature to a warm 84.2°F (29°C) from August's 88.9°F (31.6°C). September nights are marked by an average low-temperature of 65.8°F (18.8°C).Heat index
In September, the heat index is appraised at a hot 91.4°F (33°C). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.Heat index's context suggests values are appropriate for shady areas and slight breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. 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 quite important for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Humidity
In Horn Lake, the average relative humidity in September is 71%.Rainfall
In Horn Lake, Mississippi, during September, the rain falls for 12.3 days and regularly aggregates up to 1.61" (41mm) of precipitation. 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.Daylight
In Horn Lake, 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, in Horn Lake, sunrise is at 6:54 am and sunset at 6:45 pm CDT.
Sunshine
In Horn Lake, the average sunshine in September is 9.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 5 in September transforms into this advice:
Undertake precautions - It is suggested to shield oneself from sunburn. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
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).
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).
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).
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%).
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").
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).
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").
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).
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).
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).
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).
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).
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).
Horn Lake, Mississippi, USA
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