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
Irvine's weather subtly changes with the onset of September, barely falling from a moderately hot 84.9°F (29.4°C) in August to a still warm 78.6°F (25.9°C). Irvine experiences an average nighttime temperature of 57.7°F (14.3°C) in the month of September.Humidity
In Irvine, the average relative humidity in September is 76%.Rainfall
In Irvine, in September, during 13.2 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. In Irvine, during the entire year, the rain falls for 163.1 days and collects up to 29.33" (745mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Irvine, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 7:06 am and sunset at 8:04 pm. On the last day of September, sunrise is at 7:31 am and sunset at 7:20 pm EDT.
Sunshine
In Irvine, the average sunshine in September is 8.2h.UV index
The average daily maximum UV index in September in Irvine is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 5 translates into these guidelines:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in Irvine in September?
How many hours of daylight does Irvine have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Irvine, KY
- Average high temperature in September: 78.6°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (39.9°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in September
Irvine, KY
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
Irvine, KY
- Average wind speed in September: 4.8mph
The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in September
Irvine, KY
- Average humidity in September: 76%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Irvine, KY
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (3.11").
The driest months (with the least rainfall) are January and November (1.93").
Average rainfall days in September
Irvine, KY
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in September
Irvine, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Irvine, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Irvine, 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 36min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Irvine, KY
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is November (17.5 days).
The months with the least sunshine days are February and July (10.7 days).
Average UV index in September
Irvine, KY
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Irvine, KY
- Average cloud cover in September: 35
The months with the most cloud cover are January and February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Irvine, KY
- Average visibility in September: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
Irvine, Kentucky, USA
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