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
Collinsville indicates an average high-temperature of a still hot 86.7°F (30.4°C) in September, showing minor variation from August's 91.2°F (32.9°C). Collinsville's nighttime temperature in September falls to an average of 66.4°F (19.1°C).Heat index
The heat index value for September is appraised at a torrid 98.6°F (37°C). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.Understand that the heat index values take into account shaded locations and mild winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Rising body temperatures due to excess heat retention could signify impending heat disorders.
Humidity
The average relative humidity in September in Collinsville is 73%.Rainfall
In Collinsville, in September, it is raining for 13.7 days, with typically 2.83" (72mm) of accumulated precipitation. In Collinsville, during the entire year, the rain falls for 168.5 days and collects up to 37.6" (955mm) of precipitation.Snowfall
April through November are months without snowfall in Collinsville.Daylight
The average length of the day in September in Collinsville is 12h and 22min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:19 pm. On the last day of September, in Collinsville, Mississippi, sunrise is at 6:49 am and sunset at 6:40 pm CDT.
Sunshine
In Collinsville, Mississippi, the average sunshine in September is 9h.UV index
In September, the average daily maximum UV index in Collinsville is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 6 in September leads to these guidelines:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
How hot is September in Collinsville?
What is the average humidity in September in Collinsville?
How much does it rain in Collinsville in September?
When it does not snow in Collinsville?
How many hours of daylight does Collinsville have in September?
When are sunrise and sunset in September in Collinsville?
How long on average sun shines in September in Collinsville?
What is the UV index intensity in September in Collinsville?
Average temperature in September
Collinsville, MS
- Average high temperature in September: 86.7°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (53.4°F).
- Average low temperature in September: 66.4°F
The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (37.2°F).
Average pressure in September
Collinsville, 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
Collinsville, MS
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in September
Collinsville, MS
- Average humidity in September: 73%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Collinsville, MS
- Average rainfall in September: 2.83"
The wettest month (with the highest rainfall) is December (3.98").
The driest month (with the least rainfall) is November (2.17").
Average rainfall days in September
Collinsville, MS
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is November (9 days).
Average snowfall in September
Collinsville, MS
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Collinsville, MS
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (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
Collinsville, 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 6min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in September
Collinsville, MS
- Average sunshine days in September: 14.6 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (8.3 days).
Average UV index in September
Collinsville, MS
- 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 and December (UV index 3).
Average cloud cover in September
Collinsville, MS
- Average cloud cover in September: 32
The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in September
Collinsville, MS
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are May and July (5mi).
Collinsville, Mississippi, USA
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