Planning a trip to Louisville in September? You are in luck! The weather is generally good, with an average maximum temperature of +27°C and approximately 9 sunny days. Just be prepared for some rain, as there are usually around 12 rainy days and 102 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flightsin one click on Avionero.
Average weather
☀️
+27°C
Avg. max. temperature
+3°C
Min.
+38°C
Max.
102 mm
Total precipitation
70%
Avg. humidity
2 m/s
Avg. wind
9 ☀️
Sunny Days
8 ⛅️
Cloudy
12 🌦
Rainy
Our opinion: Louisville has good weather in September.
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Average temperature in Louisville in September
Here are the expected maximum, average and minimum temperatures in Louisville for September based on the historical data.
Last Year
Historical Data
Going from a maximum of +33°C during the day to a minimum of +10°C during the night, the temperature in September averages around +28°C.
The average maximum temperature goes down 9% by the end of the month, compared with the beginning of the month, from +31°C to +29°C.
Is Louisville warm or cold in September?
Louisville is typically warm in September.
Maximum temperatures go down compared to the previous month from +30°C to +27°C. The minimum temperature also goes down from +20°C to +16°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Louisville:
Climate in Louisville in September
Louisville weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+30°C
+27°C
+21°C
Min. temperature
+9°C
+3°C
-4°C
Max. temperature
+38°C
+38°C
+35°C
Rainfall
98 mm
102 mm
93 mm
Wind
2 m/s
2 m/s
2 m/s
Humidity
70%
70%
69%
Air pressure
1015 HPa
1016 HPa
1017 HPa
Sunny days
6
9
9
Cloudy days
9
8
9
Rainy days
14
12
13
Snowy days
0
0
0
September weather is still as good as in August.It’s getting colder in September. From +30°C in the day, the average maximum temperature lowers to +27°C.Prepare for more rain. Average rainfall goes from 98 mm to 102 mm.Humidity levels don’t change as the month goes on, averaging around 70%.The average wind speed doesn’t change much during September, staying around 2 m/s.The good news is there are likely to be more sunny days in September, from 6 to 9.
October brings much the same weather, it remains good.
Wind speed in Louisville in September based on historical data.
Last Year
Historical Data
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Louisville is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Louisville based on historical data.
Last Year
Historical Data
Typically, there is a 27% chance of rain on an average day in September, with total rainfall of approximately 45 mm. The maximum amount of rainfall per day is around 19 mm, which is considered light rain.On average, there are about 8 rainy days during September, so prepare to bring an umbrella.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Louisville wettest month is May, where a typical day has a 55% chance of precipitation and 154 mm of rainfall per day. January, on the other hand, is the driest month with a mere 26% chance of precipitation and 75 mm of rainfall per day.
How was the weather last September in Louisville?
This is the weather in Louisville in September 2024:
1 September
☀️
+31°C
2 September
☀️
+32°C
3 September
☀️
+33°C
4 September
☀️
+33°C
5 September
☀️
+31°C
6 September
☀️
+29°C
7 September
🌧️
+26°C
8 September
☁️
+27°C
9 September
☁️
+26°C
10 September
☁️
+28°C
11 September
☀️
+29°C
12 September
☀️
+27°C
13 September
☀️
+26°C
14 September
☀️
+27°C
15 September
☀️
+26°C
16 September
☀️
+27°C
17 September
☀️
+25°C
18 September
☀️
+25°C
19 September
☀️
+27°C
20 September
☀️
+29°C
21 September
☀️
+29°C
22 September
☀️
+30°C
23 September
☀️
+28°C
24 September
☀️
+28°C
25 September
☀️
+29°C
26 September
☀️
+31°C
27 September
☀️
+26°C
28 September
🌧️
+26°C
29 September
☀️
+28°C
30 September
☀️
+29°C
In September 2024 Louisville had 25 sunny days, 3 cloudy days, and 2 rainy days. The average maximum temperature was +28°C, with an absolute maximum of +33°C and a minimum of +25°C. The average humidity was 70%, with a maximum of 95% and a minimum of 26%. The average wind speed was 2 m/s, with a maximum of 7 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change over Years
This is how Louisville climate have been changing during last 43 years period.
The climate in Louisville in September has not changed much over the last 43 years.
The average temperature was the lowest in 1979 (+17°C) and the highest in 2012 (+21°C). The driest year was 1987 with only 957 mm of rainfall, and the wettest year was 2011 with 1944 mm.
FAQ
Frequently asked questions about the weather in Louisville in September:
Is September a good time to visit Louisville?
September is a really good time to go to Louisville. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Louisville.
Can you sunbathe in Louisville in September?
September is warm in Louisville. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.
Is Louisville rainy in September?
Louisville is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Louisville in September?
Usually, it’s not very sunny in Louisville in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Louisville, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
