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's arrival registers an average high-temperature of a still hot 86°F (30°C), closely aligning with the temperature of the previous month. During September nights, Fresno witnesses a consistent average temperature of 66°F (18.9°C).Heat index
In September, the average heat index is computed to be a very hot 95°F (35°C). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of 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 of high 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.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.
Humidity
In September, the average relative humidity in Fresno is 71%.Rainfall
In Fresno, in September, it is raining for 10.9 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, there are 135.9 rainfall days, and 23.15" (588mm) of precipitation is accumulated.Snowfall
March through October are months without snowfall in Fresno.Daylight
In September, the average length of the day in Fresno is 12h and 22min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:32 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:52 pm CDT.
Sunshine
In Fresno, the average sunshine in September is 9.7h.UV index
In Fresno, 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 average individuals.Note: In September, the maximum UV index of 6 transforms into these recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Frequently asked questions
How hot does it get in Fresno in September?
What is the average humidity in September in Fresno?
How much does it rain in Fresno in September?
When it does not snow in Fresno?
How many hours of daylight does Fresno have in September?
What time are sunrise and sunset in September in Fresno?
How many hours of sunshine does Fresno have in September?
How high is the UV index in September in Fresno?
Average temperature in September
Fresno, AR
- Average high temperature in September: 86°F
The warmest month (with the highest average high temperature) is July (91.6°F).
The month with the lowest average high temperature is January (50.5°F).
- Average low temperature in September: 66°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 (36.1°F).
Average pressure in September
Fresno, 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
Fresno, AR
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Fresno, AR
- Average humidity in September: 71%
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Fresno, AR
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is April (2.4").
The driest month (with the least rainfall) is November (0.98").
Average rainfall days in September
Fresno, AR
- Average rainfall days in September: 10.9 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is November (7.4 days).
Average snowfall in September
Fresno, AR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.47").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in September
Fresno, 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
Fresno, 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 4min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Fresno, AR
- Average sunshine days in September: 17 days
The months with the most sunshine days are October and November (20.6 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in September
Fresno, AR
- Average UV index in September: 6
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in September
Fresno, AR
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in September
Fresno, 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).
Fresno, Arkansas, USA
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