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
Runnelstown, Mississippi, experiences an average high-temperature of a still hot 87.8°F (31°C) with the onset of September, subtly varied from August's 91.8°F (33.2°C). During September, Runnelstown experiences a consistent low-temperature average of 68°F (20°C).Heat index
The average heat index in September is evaluated at a blistering 104°F (40°C). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.Given the heat index, its values are aligned with shaded sites and gentle winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
In Runnelstown, the average relative humidity in September is 76%.Rainfall
In Runnelstown, in September, during 17.5 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. Throughout the year, there are 177.1 rainfall days, and 36.42" (925mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September in Runnelstown is 12h and 21min.On the first day of September in Runnelstown, sunrise is at 6:32 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:42 pm CDT.
Sunshine
The average sunshine in September in Runnelstown is 9.1h.UV index
The average daily maximum UV index in September in Runnelstown is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, the maximum UV index of 6 suggests this advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
How hot does it get in Runnelstown in September?
What is the average humidity in September in Runnelstown?
How much does it rain in Runnelstown in September?
When it does not snow in Runnelstown?
How many hours of daylight does Runnelstown have in September?
When is the sunrise / sunset in September in Runnelstown?
How long on average sun shines in September in Runnelstown?
How high is the UV index in September in Runnelstown?
Average temperature in September
Runnelstown, MS
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is August (91.8°F).
The month with the lowest average high temperature is January (56.8°F).
- Average low temperature in September: 68°F
The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).
Average pressure in September
Runnelstown, MS
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in September
Runnelstown, MS
- Average wind speed in September: 4.7mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is July (4.4mph).
Average humidity in September
Runnelstown, MS
- Average humidity in September: 76%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Runnelstown, MS
- Average rainfall in September: 2.91"
The wettest month (with the highest rainfall) is July (4.37").
The driest month (with the least rainfall) is November (1.77").
Average rainfall days in September
Runnelstown, MS
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in September
Runnelstown, MS
- Average snowfall in September: 0"
The month with the highest snowfall is December (0.39").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Runnelstown, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Runnelstown, MS
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in September
Runnelstown, MS
- Average sunshine days in September: 10.3 days
The months with the most sunshine days are October and November (19.8 days).
The month with the least sunshine days is August (6.4 days).
Average UV index in September
Runnelstown, MS
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Runnelstown, MS
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in September
Runnelstown, MS
- Average visibility in September: 5mi
The months with the highest visibility are June, October and November (6mi).
The months with the lowest visibility are January, February, March, April, May, July, August, September and December (5mi).
Runnelstown, Mississippi, USA
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