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 signifies a gentle decline in Guernsey's average high-temperature, easing from a hot 93°F (33.9°C) in August to a still tropical 86.9°F (30.5°C). Throughout September, Guernsey records an average temperature of 65.7°F (18.7°C) at night.Heat index
For most parts of September, the heat index is evaluated at a torrid 96.8°F (36°C). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.One should consider that heat index numbers are for shaded settings and light wind. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
August and September, with an average relative humidity of 70%, are the least humid months.Rainfall
In Guernsey, Arkansas, in September, it is raining for 11.3 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, in Guernsey, there are 142 rainfall days, and 27.17" (690mm) of precipitation is accumulated.Snowfall
In Guernsey, snow does not fall in April through December.Daylight
In Guernsey, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 6:49 am and sunset at 7:39 pm. On the last day of September, in Guernsey, sunrise is at 7:08 am and sunset at 6:59 pm CDT.
Sunshine
In September, the average sunshine in Guernsey is 9.6h.UV index
The average daily maximum UV index in September in Guernsey is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 5 during September translates into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Frequently asked questions
How hot does it get in Guernsey in September?
What is the least humid month in Guernsey?
What is the average humidity in September in Guernsey?
How much does it rain in Guernsey in September?
When it does not snow in Guernsey?
What is the average length of the day in September in Guernsey?
When are sunrise and sunset in September in Guernsey?
How long on average sun shines in September in Guernsey?
How high is the UV index in September in Guernsey?
Average temperature in September
Guernsey, AR
- Average high temperature in September: 86.9°F
The warmest month (with the highest average high temperature) is July (93.4°F).
The month with the lowest average high temperature is January (51.4°F).
- Average low temperature in September: 65.7°F
The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (35.4°F).
Average pressure in September
Guernsey, 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
Guernsey, AR
- Average wind speed in September: 5.1mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Guernsey, AR
- Average humidity in September: 70%
The months with the highest relative humidity are February, March and December (80%).
The months with the lowest relative humidity are August and September (70%).
Average rainfall in September
Guernsey, AR
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is April (3.07").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days in September
Guernsey, AR
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Guernsey, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Guernsey, AR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.7 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
Guernsey, 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: 10h and 0min).
- Average sunshine in September: 9h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).
Average sunshine days in September
Guernsey, AR
- Average sunshine days in September: 16.7 days
The months with the most sunshine days are January and October (20 days).
The month with the least sunshine days is July (13.6 days).
Average UV index in September
Guernsey, AR
- Average UV index in September: 5
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
Guernsey, AR
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in September
Guernsey, AR
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Guernsey, Arkansas, USA
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