United StatesThe weather in September in McAllen
It's hot in September in McAllen with an average temperature of 36°C. Temperatures this month range from a low of 32°C to a high of 38°C. At night, you can expect temperatures between 24°C and 27°C.
Looking for sun? September isn’t a good month to be in McAllen. The average temperature of 36°C this month is uncomfortably hot, and there’s too much chance of 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 McAllen, 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 40°C in 2018, McAllen reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 26°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of 12°C to a highest value of 29°C.
Rainfall amount
In September, there is an average of 129 mm of precipitation, spread over 14 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Daily weather in September for McAllen
Click on any day in September to get detailed info about the usual weather on that day in McAllen. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| McAllen | New York | |
|---|---|---|
| Average temperature | 36°C | 27°C |
| Max. temperature | 38°C | 31°C |
| Min. temperature | 24°C | -5°C |
| Total precipitation | 129 mm | 57 mm |
| Rainy days | 14 days | 9 days |
Start of September
The month of September starts in McAllen with hot temps, averaging around 38°C during the day and nights around 26°C.
Mid September
By mid-September, daytime temps drop to around 37°C, with nights around 26°C. There’s a high chance of precipitation during this time.
End of September
By the end of September, the average daytime temperature in McAllen is around 35°C, while nighttime temps are about 25°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
The hurricane season in McAllen runs from June to November.
Check out the climate of McAllen for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in McAllen, Texas. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in McAllen
Temperature in September in McAllen over the years
Precipitation charts
These charts show the average amount of precipitation in September in McAllen, 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 McAllen
Total precipitation in September in McAllen over the years
Daily UV index in September in McAllen
This chart shows the average daily UV index in September in McAllen, 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 McAllen
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Average weather in McAllen by month
Click on a month below to see detailed weather info for McAllen. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.