Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
During the shift to September, Grumes records a mild decrease in average high-temperature, moving from an agreeable 71.8°F in August to an enjoyable 63.5°F. Throughout September, the average low-temperature in Grumes dips to a chilly 45.7°F.Humidity
In Grumes, Italy, the average relative humidity in September is 80%.Rainfall
In Grumes, in September, it is raining for 18.9 days, with typically 2.83" of accumulated precipitation. In Grumes, during the entire year, the rain falls for 206.6 days and collects up to 41.69" of precipitation.Snowfall
In Grumes, snow does not fall in May through September.Daylight
In September, the average length of the day in Grumes is 12h and 32min.On the first day of the month, sunrise is at 06:35 and sunset at 19:53. On the last day of September, in Grumes, sunrise is at 07:12 and sunset at 18:56 CEST.
Sunshine
In Grumes, the average sunshine in September is 9.5h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 4 in September leads to these guidelines:
Ensure safety - Sun damage prevention is strongly urged. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Grumes in September?
What is the average humidity in September in Grumes?
How many days does it rain in September in Grumes?
When it does not snow in Grumes?
Does it snow in Grumes in September?
What is the average length of the day in September in Grumes?
When is the sunrise / sunset in September in Grumes?
How many hours of sunshine does Grumes have in September?
How high is the UV index in September in Grumes?
Average temperature in September
Grumes, Italy
- Average high temperature in September: 63.5°F
The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in September: 45.7°F
The month with the highest average low temperature is July (52.2°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in September
Grumes, Italy
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is December (30.12"Hg).
The month with the lowest atmospheric pressure is May (29.97"Hg).
Average wind speed in September
Grumes, Italy
- Average wind speed in September: 3.9mph
The windiest months (with the highest average wind speed) are February, March and May (4.6mph).
The calmest months (with the lowest average wind speed) are October and November (3.7mph).
Average humidity in September
Grumes, Italy
- Average humidity in September: 80%
The month with the highest relative humidity is November (82%).
The month with the lowest relative humidity is December (74%).
Average rainfall in September
Grumes, Italy
- Average rainfall in September: 2.83"
The wettest month (with the highest rainfall) is November (5.98").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in September
Grumes, Italy
- Average rainfall days in September: 18.9 days
The month with the highest number of rainy days is May (25.1 days).
The month with the least rainy days is December (9.5 days).
Average snowfall in September
Grumes, Italy
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Grumes, Italy
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (3.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grumes, Italy
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is November (Average sunshine: 5h and 36min).
Average sunshine days in September
Grumes, Italy
- Average sunshine days in September: 8.1 days
The month with the most sunshine days is December (19.5 days).
The month with the least sunshine days is June (2.5 days).
Average UV index in September
Grumes, Italy
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Grumes, Italy
- Average cloud cover in September: 34
The month with the most cloud cover is November (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in September
Grumes, Italy
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August and December (6mi).
The months with the lowest visibility are September, October and November (5mi).
