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 brings a minor shift in the average high-temperature, adjusting from a tropical 91.6°F (33.1°C) in August to a moderately hot 85.3°F (29.6°C). Lonsdale experiences a mean temperature of 64.8°F (18.2°C) during September nights.Heat index
During September, the heat index is computed to be a sweltering 95°F (35°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. 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. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
In Lonsdale, the average relative humidity in September is 72%.Rainfall
September is the month with the least rainfall. Rain falls for 11.9 days and accumulates 1.89" (48mm) of precipitation.Snowfall
In Lonsdale, snow does not fall in April through November.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 6:44 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:56 pm CDT.
Sunshine
The average sunshine in September is 9.5h.UV index
In Lonsdale, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In September, a regular UV index of 6 translates into these guidelines:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What is the average humidity in September?
What is the driest month?
How much 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?
How high is the UV index in September?
Average temperature in September
Lonsdale, AR
- Average high temperature in September: 85.3°F
The warmest month (with the highest average high temperature) is July (92.1°F).
The month with the lowest average high temperature is January (49.3°F).
- Average low temperature in September: 64.8°F
The month with the highest average low temperature is July (71.8°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).
Average pressure in September
Lonsdale, AR
- 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
Lonsdale, AR
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Lonsdale, AR
- Average humidity in September: 72%
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Lonsdale, AR
- Average rainfall in September: 1.89"
The wettest month (with the highest rainfall) is April (4.25").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in September
Lonsdale, AR
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is July (16 days).
The months with the least rainy days are January and November (9.5 days).
Average snowfall in September
Lonsdale, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Lonsdale, AR
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (1.6 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
Lonsdale, AR
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in September
Lonsdale, AR
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in September
Lonsdale, AR
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Lonsdale, AR
- Average cloud cover in September: 29
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in September
Lonsdale, AR
- 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).
Lonsdale, Arkansas, USA
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