Temperatures in September
It's warm in September in Raleigh with an average temperature of 28°C. Temperatures this month range from a low of 24°C to a high of 32°C. At night, you can expect temperatures between 16°C and 22°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Raleigh in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Raleigh with hot temperatures, averaging around 31°C during the day and nights close to 21°C. Plenty of days with a chance of precipitation.
Mid-September
By mid-September, the average daytime temperature drops to around 28°C, with nights close to 20°C. During this part of the month, you can expect regular precipitation, but there’ll also be some sunny days.
Temperatures vary between day and night, so it’s smart to wear layers.
End of September
By the end of September, the average daytime temperature in Raleigh will be around 26°C, with nights close to 18°C. There’s a significant chance of many days with precipitation.
As it gets cooler in the evening, it’s best to wear layers.
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Precipitation in September
In September, there is an average of 226 mm of precipitation, spread over 9 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
The average precipitation chance is 28% per day this month. Though it seems pretty low, the weather’s variable. There are also a few days with higher precipitation chances.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Raleigh. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Raleigh in September |
London | ||
|---|---|---|---|
 Average Temperature |
28°C | 20°C | |
 High Temp |
32°C | 22°C | |
| Low Temp |
24°C | 17°C | |
 Total Precipitation |
226 mm | 44 mm | |
| Rainy Days |
9 days | 8 days | |
August
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Raleigh?
After some sun? Then September isn’t the best time to be in Raleigh. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for Raleigh in September
With 37°C, Raleigh hit the highest temperature in the last 10 years in September 2023. The lowest daytime temperature in this month was 17°C in 2023. The extreme night temperatures ranged from a low of 6°C to a high of 25°C.
Check out the climate of Raleigh for all months and discover the best travel time
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Daily Temperature in September in Raleigh
This chart shows the average daily temperatures, both day and night, for each day in September in Raleigh, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Raleigh
The chart below shows the average daily precipitation in September for Raleigh, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 9 days of rain in Raleigh.
Daily UV Index in September in Raleigh
This chart shows the average daily UV index in September in Raleigh, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Raleigh Over the Years
This chart shows the average temperature in September in Raleigh, measured in degrees Celsius, over the past years.
Total Precipitation in September in Raleigh Over the Years
This chart shows the average precipitation in September in Raleigh, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Raleigh
Click on a specific day in September for detailed info on the typical weather on that day in Raleigh. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Raleigh
Have you been to Raleigh in September?
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Average Weather in Raleigh by Month
Click on a month below to see detailed weather info for Raleigh. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
