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
A minimal variation is noted in Isola's average high-temperature at the onset of September, reaching a still tropical 86.5°F (30.3°C) from August's 90.1°F (32.3°C). An average low-temperature of 67.5°F (19.7°C) is expected in Isola during September.Heat index
The heat index for September is evaluated at a torrid 96.8°F (36°C). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.Be advised, the heat index considers values for conditions in shade and with a light breeze. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.
Humidity
In September, the average relative humidity is 71%.Rainfall
The months with the least rainfall in Isola are September and November Rain falls for 13 days and accumulates 2.2" (56mm) of rain.Snowfall
In Isola, snow does not fall in April through October and December.Daylight
The average length of the day in September in Isola is 12h and 22min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:27 pm. On the last day of September, in Isola, sunrise is at 6:56 am and sunset at 6:47 pm CDT.
Sunshine
In September, the average sunshine in Isola is 9.9h.UV index
The average daily maximum UV index in September in Isola, Mississippi, is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in Isola?
What is the average humidity in September in Isola?
What is the driest month in Isola?
How many days does it rain in September in Isola?
When it does not snow in Isola?
What is the average length of the day in September in Isola?
When is the sunrise / sunset in September in Isola?
How long on average sun shines in September in Isola?
What is the UV index reading in September in Isola?
Average temperature in September
Isola, MS
- Average high temperature in September: 86.5°F
The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (52.2°F).
- Average low temperature in September: 67.5°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).
Average pressure in September
Isola, MS
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Isola, MS
- Average wind speed in September: 5.7mph
The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in September
Isola, MS
- Average humidity in September: 71%
The months with the highest relative humidity are February, March and December (79%).
The month with the lowest relative humidity is October (67%).
Average rainfall in September
Isola, MS
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is April (4.21").
The driest months (with the least rainfall) are September and November (2.2").
Average rainfall days in September
Isola, MS
- Average rainfall days in September: 13 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is October (8.7 days).
Average snowfall in September
Isola, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.28").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Isola, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.1 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
Isola, MS
- 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 5min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in September
Isola, MS
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is October (21.1 days).
The months with the least sunshine days are July and August (11.3 days).
Average UV index in September
Isola, MS
- 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
Isola, MS
- Average cloud cover in September: 26
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in September
Isola, MS
- 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).
Isola, Mississippi, USA
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