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ItalyThe weather in September in Grottaferrata
It's warm in September in Grottaferrata with an average temperature of 28°C. Temperatures this month range from a low of 25°C to a high of 29°C. At night, you can expect temperatures between 15°C and 21°C.
Looking for great weather? September is a good time to be in Grottaferrata. The temperatures are nice, and there’s 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 Grottaferrata, Italy. 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 34°C in 2020, Grottaferrata reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 16°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of 8°C to a highest value of 25°C.
Rainfall amount
In September, there is an average of 32 mm of precipitation, spread over 6 days. The wind speed is around 3 Bft, mostly coming from the South.
Daily weather in September for Grottaferrata
Click on any day in September to get detailed info about the usual weather on that day in Grottaferrata. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Grottaferrata | New York | |
|---|---|---|
| Average temperature | 28°C | 27°C |
| Max. temperature | 29°C | 31°C |
| Min. temperature | 15°C | -5°C |
| Total precipitation | 32 mm | 57 mm |
| Rainy days | 6 days | 9 days |
Start of September
The month of September starts in Grottaferrata with hot temps, averaging around 29°C during the day and nights around 19°C.
Mid September
By mid-September, daytime temps stay steady at around 29°C, with nights around 19°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 Grottaferrata is around 26°C, while nighttime temps are about 17°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
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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.
Check out the climate of Grottaferrata for all months and discover the best travel time
Curious about the weather in other parts of Italy? Check out the climate and weather for spots like Tuscany, Sicily, Lake Garda, or explore other destinations in Italy.
Temperature charts
These charts show the average temperatures in September in Grottaferrata, Italy. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Grottaferrata
Temperature in September in Grottaferrata over the years
Precipitation charts
These charts show the average amount of precipitation in September in Grottaferrata, Italy. 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 Grottaferrata
Total precipitation in September in Grottaferrata over the years
Daily UV index in September in Grottaferrata
This chart shows the average daily UV index in September in Grottaferrata, 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 Grottaferrata
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Average weather in Grottaferrata by month
Click on a month below to see detailed weather info for Grottaferrata. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.