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
Massac measures an average high-temperature of a warm 81.7°F (27.6°C) in September, nearly consistent with the preceding month. In September, the temperature in Massac drops to an average of 61.9°F (16.6°C) at night.Heat index
The heat index for September is evaluated at a tropical 86°F (30°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.Understand that the heat index values take into account shaded locations and mild winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
Humidity
The average relative humidity in September in Massac is 72%.Rainfall
The month with the least rainfall in Massac is September, when the rain falls for 9 days and typically collects 0.91" (23mm) of precipitation.Snowfall
In Massac, snow does not fall in May through October.Daylight
In Massac, the average length of the day in September is 12h and 25min.On the first day of September in Massac, sunrise is at 6:26 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:39 pm CDT.
Sunshine
In September, the average sunshine in Massac is 9.6h.UV index
The average daily maximum UV index in September in Massac 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 average person.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Exercise prevention - Precautions against solar damage are endorsed. To guard against the harmful effects of the Sun, minimize exposure during midday. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What is the usual temperature for Massac in September?
What is the average humidity in September in Massac?
What is the driest month in Massac?
How much does it rain in Massac in September?
When it does not snow in Massac?
How many hours of daylight does Massac have in September?
When are sunrise and sunset in September in Massac?
How long on average sun shines in September in Massac?
What is the UV index intensity in September in Massac?
Average temperature in September
Massac, KY
- Average high temperature in September: 81.7°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in September: 61.9°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in September
Massac, KY
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Massac, KY
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Massac, KY
- Average humidity in September: 72%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in September
Massac, KY
- Average rainfall in September: 0.91"
The wettest month (with the highest rainfall) is April (2.52").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in September
Massac, KY
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Massac, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.02").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Massac, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Massac, KY
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 9h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 42min).
Average sunshine days in September
Massac, KY
- Average sunshine days in September: 19 days
The month with the most sunshine days is October (21.3 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in September
Massac, KY
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Massac, KY
- Average cloud cover in September: 27
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June and September (Cloud cover 27).
Average visibility in September
Massac, KY
- 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).
Massac, Kentucky, USA
Weather forecast for your location
2. Allow the app to use your location
