Weathermondo.com
United StatesThe weather in September in McKinney
It's hot in September in McKinney with an average temperature of 32°C. Temperatures this month range from a low of 28°C to a high of 34°C. At night, you can expect temperatures between 17°C and 23°C.
September is a good month to be in McKinney for sunny weather. You’ll have high temperatures and not too much rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for McKinney, Texas. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 43°C in 2023, McKinney reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 20°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 8°C to a highest value of 28°C.
Rainfall amount
In September, there is an average of 87 mm of precipitation, spread over 10 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Daily weather in September for McKinney
Click on any day in September to get detailed info about the usual weather on that day in McKinney. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| McKinney | New York | |
|---|---|---|
| Average temperature | 32°C | 27°C |
| Max. temperature | 34°C | 31°C |
| Min. temperature | 17°C | -5°C |
| Total precipitation | 87 mm | 57 mm |
| Rainy days | 10 days | 9 days |
Start of September
The month of September starts in McKinney with hot temps, averaging around 34°C during the day and nights around 22°C.
Mid September
By mid-September, daytime temps drop to around 32°C, with nights around 21°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of September
By the end of September, the average daytime temperature in McKinney is around 31°C, while nighttime temps are about 19°C. A shower might pop up, but overall, the weather will be dry and sunny.
Find affordable trips to McKinney
UV index
The UV index is a maximum of 4 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
The hurricane season in McKinney runs from June to November.
Check out the climate of McKinney for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in McKinney, Texas. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in McKinney
Temperature in September in McKinney over the years
Precipitation charts
These charts show the average amount of precipitation in September in McKinney, Texas. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in McKinney
Total precipitation in September in McKinney over the years
Daily UV index in September in McKinney
This chart shows the average daily UV index in September in McKinney, 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.
Weather experiences in September in McKinney
Have you been to McKinney in September?
Share your weather experience in September in McKinney.
Average weather in McKinney by month
Click on a month below to see detailed weather info for McKinney. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.