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
Start of September brings a slight shift in the average high-temperature, dipping a bit from August's 93.7°F (34.3°C) to a still hot 87.4°F (30.8°C). Nighttime temperature experiences an average drop to an enjoyable 66.7°F (19.3°C) in September.Heat index
In September, the average heat index is estimated at a fiery hot 98.6°F (37°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.For clarity, heat index numbers account for light winds and areas under shade. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. 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 quite important for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
The average relative humidity in September is 69%.Rainfall
In Genoa, in September, it is raining for 11.1 days, with typically 2.83" (72mm) of accumulated precipitation. In Genoa, during the entire year, the rain falls for 145.7 days and collects up to 39.02" (991mm) of precipitation.Snowfall
In Genoa, snow does not fall in April through November.Daylight
The average length of the day in September in Genoa is 12h and 22min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:40 pm. On the last day of September, in Genoa, Arkansas, sunrise is at 7:09 am and sunset at 7:00 pm CDT.
Sunshine
The average sunshine in September is 9.2h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 6 in September translates into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Genoa in September?
What is the average humidity in September in Genoa?
How much does it rain in Genoa in September?
When it does not snow in Genoa?
How many hours of daylight does Genoa have in September?
What time are sunrise and sunset in September in Genoa?
How many hours of sunshine does Genoa have in September?
What is the UV index reading in September in Genoa?
Average temperature in September
Genoa, AR
- Average high temperature in September: 87.4°F
The warmest months (with the highest average high temperature) are July and August (93.7°F).
The month with the lowest average high temperature is January (52.3°F).
- Average low temperature in September: 66.7°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 (36.7°F).
Average pressure in September
Genoa, AR
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Genoa, AR
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Genoa, AR
- Average humidity in September: 69%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (68%).
Average rainfall in September
Genoa, AR
- Average rainfall in September: 2.83"
The wettest month (with the highest rainfall) is April (4.92").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in September
Genoa, AR
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is January (9 days).
Average snowfall in September
Genoa, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Genoa, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.4 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
Genoa, AR
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).
Average sunshine days in September
Genoa, AR
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is October (20.8 days).
The month with the least sunshine days is March (13.8 days).
Average UV index in September
Genoa, AR
- 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, February, November and December (UV index 3).
Average cloud cover in September
Genoa, AR
- Average cloud cover in September: 30
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Genoa, AR
- Average visibility in September: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Genoa, Arkansas, USA
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