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
Weather in September
Temperature
With the onset of September, Costa Valle Imagna's average high-temperature slightly adjusts, moderately receding from August's moderately hot 24.2°C (75.6°F) to a refreshing 19.5°C (67.1°F). During the month of September, Costa Valle Imagna anticipates a mean low-temperature of 10.4°C (50.7°F).Humidity
In Costa Valle Imagna, the average relative humidity in September is 77%.Rainfall
In September, the rain falls for 16 days. Throughout September, 75mm (2.95") of precipitation is accumulated. Throughout the year, in Costa Valle Imagna, there are 192.7 rainfall days, and 1242mm (48.9") of precipitation is accumulated.Snowfall
January through March, September, November and December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, in Costa Valle Imagna, there are 10.2 snowfall days, and 132mm (5.2") of snow is accumulated.Daylight
In Costa Valle Imagna, the average length of the day in September is 12h and 32min.On the first day of September in Costa Valle Imagna, sunrise is at 06:43 and sunset at 20:00. On the last day of the month, sunrise is at 07:19 and sunset at 19:03 CEST.
Sunshine
In Costa Valle Imagna, the average sunshine in September is 9.7h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 4 during September leads to these advisories:
Undertake precautions - Obligation exists to protect against skin and eye damage. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
What is the usual temperature for Costa Valle Imagna in September?
What is the average humidity in September in Costa Valle Imagna?
How many days does it rain in September in Costa Valle Imagna?
When does it start to snow in Costa Valle Imagna?
What is the average length of the day in September in Costa Valle Imagna?
When are sunrise and sunset in September in Costa Valle Imagna?
How long on average sun shines in September in Costa Valle Imagna?
What is the UV index reading in September in Costa Valle Imagna?
Average temperature in September
Costa Valle Imagna, Italy
- Average high temperature in September: 19.5°C
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (3.6°C).
- Average low temperature in September: 10.4°C
The months with the highest average low temperature are July and August (14.2°C).
The coldest month (with the lowest average low temperature) is January (-2.3°C).
Average pressure in September
Costa Valle Imagna, Italy
- Average pressure in September: 1017.4mbar
The month with the highest atmospheric pressure is December (1020.2mbar).
The months with the lowest atmospheric pressure are April and May (1014.9mbar).
Average wind speed in September
Costa Valle Imagna, Italy
- Average wind speed in September: 5.9km/h
The windiest months (with the highest average wind speed) are March and May (6.6km/h).
The calmest month (with the lowest average wind speed) is November (5.4km/h).
Average humidity in September
Costa Valle Imagna, Italy
- Average humidity in September: 77%
The month with the highest relative humidity is November (81%).
The month with the lowest relative humidity is July (73%).
Average rainfall in September
Costa Valle Imagna, Italy
- Average rainfall in September: 75mm
The wettest month (with the highest rainfall) is November (162mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in September
Costa Valle Imagna, Italy
- Average rainfall days in September: 16 days
The month with the highest number of rainy days is May (23.2 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in September
Costa Valle Imagna, Italy
- Average snowfall in September: 1mm
The month with the highest snowfall is December (36mm).
The months with the least snowfall are April, May, June, July, August and October (0mm).
Average snowfall days in September
Costa Valle Imagna, Italy
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (2.8 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Costa Valle Imagna, 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 4min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is November (Average sunshine: 5h and 18min).
Average sunshine days in September
Costa Valle Imagna, Italy
- Average sunshine days in September: 11.9 days
The months with the most sunshine days are January and December (18.3 days).
The month with the least sunshine days is May (5.1 days).
Average UV index in September
Costa Valle Imagna, Italy
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Costa Valle Imagna, Italy
- Average cloud cover in September: 29
The month with the most cloud cover is November (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 24).
Average visibility in September
Costa Valle Imagna, Italy
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Costa Valle Imagna, Italy
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