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 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
The arrival of September is marked by an average high-temperature of a warm 84.7°F (29.3°C), bearing a close resemblance to August. Lombard's nighttime temperature during September is consistently averaged at a pleasant 68°F (20°C).Heat index
September's mean heat index is calculated to be a sweltering 95°F (35°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.Heat index data is primarily for areas with shade and subjected to light winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially crucial for babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
In Lombard, the average relative humidity in September is 76%.Rainfall
In Lombard, in September, it is raining for 13.3 days, with typically 0.94" (24mm) of accumulated precipitation. In Lombard, during the entire year, the rain falls for 132.8 days and collects up to 15.24" (387mm) of precipitation.Snowfall
April through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 22min.On the first day of September in Lombard, sunrise is at 7:04 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:14 pm EDT.
Sunshine
In Lombard, the average sunshine in September is 8.6h.UV index
In Lombard, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: In September, the maximum UV index of 6 translates into these guidelines:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Frequently asked questions
Is it hot in Lombard during September?
What is the average humidity in September in Lombard?
How many days does it rain in September in Lombard?
When it does not snow in Lombard?
How many hours of daylight does Lombard have in September?
When is the sunrise / sunset in September in Lombard?
How long on average sun shines in September in Lombard?
How high is the UV index in September in Lombard?
Average temperature in September
Lombard, GA
- Average high temperature in September: 84.7°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (55.9°F).
- Average low temperature in September: 68°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).
Average pressure in September
Lombard, GA
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in September
Lombard, GA
- Average wind speed in September: 6.2mph
The windiest months (with the highest average wind speed) are March and April (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in September
Lombard, GA
- Average humidity in September: 76%
The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are January and November (71%).
Average rainfall in September
Lombard, GA
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is August (2.17").
The driest month (with the least rainfall) is November (0.63").
Average rainfall days in September
Lombard, GA
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (5.6 days).
Average snowfall days in September
Lombard, GA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.2 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
Lombard, GA
- 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: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Lombard, GA
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is November (22.9 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in September
Lombard, GA
- 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
Lombard, GA
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 41).
The month with the least cloud cover is October (Cloud cover 28).
Average visibility in September
Lombard, GA
- 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).
Lombard, Georgia, USA
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