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United StatesThe weather in September in Rio Grande City
It's hot in September in Rio Grande City with an average temperature of 35°C. Temperatures this month range from a low of 33°C to a high of 38°C. At night, you can expect temperatures between 22°C and 26°C.
Looking for sun? September isn’t a good month to be in Rio Grande City. The temperature is nice, but 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 Rio Grande City, 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 41°C in 2023, Rio Grande City reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 25°C in 2016. The extreme nighttime temperatures ranged from a lowest recorded value of 11°C to a highest value of 29°C.
Rainfall amount
In September, there is an average of 124 mm of precipitation, spread over 16 days. The wind speed is around 4 Bft, mostly coming from the East.
Daily weather in September for Rio Grande City
Click on any day in September to get detailed info about the usual weather on that day in Rio Grande City. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Rio Grande City | New York | |
|---|---|---|
| Average temperature | 35°C | 27°C |
| Max. temperature | 38°C | 31°C |
| Min. temperature | 22°C | -5°C |
| Total precipitation | 124 mm | 57 mm |
| Rainy days | 16 days | 9 days |
Start of September
The month of September starts in Rio Grande City with hot temps, averaging around 36°C during the day and nights around 25°C.
Mid September
By mid-September, daytime temps stay steady at around 36°C, with nights around 25°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of September
By the end of September, the average daytime temperature in Rio Grande City is around 35°C, while nighttime temps are about 24°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 7 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.
The hurricane season in Rio Grande City runs from June to November.
Check out the climate of Rio Grande City for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Rio Grande City, Texas. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Rio Grande City
Temperature in September in Rio Grande City over the years
Precipitation charts
These charts show the average amount of precipitation in September in Rio Grande City, 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 Rio Grande City
Total precipitation in September in Rio Grande City over the years
Daily UV index in September in Rio Grande City
This chart shows the average daily UV index in September in Rio Grande City, 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 Rio Grande City
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Average weather in Rio Grande City by month
Click on a month below to see detailed weather info for Rio Grande City. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.