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
As Ilimsk welcomes September, there is a noticeable shift in the average high-temperature, dropping from August's agreeable 21.5°C (70.7°F) to a cool 11.6°C (52.9°F). Throughout the month of September, Ilimsk reports a steady low-temperature average of 1.5°C (34.7°F).Humidity
In Ilimsk, the average relative humidity in September is 74%.Rainfall
In September, the rain falls for 12.2 days. Throughout September, 29mm (1.14") of precipitation is accumulated. Throughout the year, there are 82.7 rainfall days, and 308mm (12.13") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 3.3 snowfall days, it receives 27mm (1.06") of snow. Throughout the year, in Ilimsk, there are 141.1 snowfall days, and 1069mm (42.09") of snow is accumulated.Daylight
In Ilimsk, the average length of the day in September is 12h and 47min.On the first day of the month, sunrise is at 06:08 and sunset at 20:01. On the last day of September, in Ilimsk, sunrise is at 07:06 and sunset at 18:42 +08.
Sunshine
The average sunshine in September is 6.4h.UV index
The average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 2 in September translates into the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Ilimsk, Russia
- Average high temperature in September: 11.6°C
The warmest month (with the highest average high temperature) is July (24.5°C).
The month with the lowest average high temperature is January (-18.3°C).
- Average low temperature in September: 1.5°C
The month with the highest average low temperature is July (10.6°C).
The coldest month (with the lowest average low temperature) is January (-26.6°C).
Average pressure in September
Ilimsk, Russia
- Average pressure in September: 1016.5mbar
The month with the highest atmospheric pressure is January (1032.4mbar).
The month with the lowest atmospheric pressure is July (1006.2mbar).
Average wind speed in September
Ilimsk, Russia
- Average wind speed in September: 8.8km/h
The windiest month (with the highest average wind speed) is May (10.4km/h).
The calmest month (with the lowest average wind speed) is August (7.4km/h).
Average humidity in September
Ilimsk, Russia
- Average humidity in September: 74%
The months with the highest relative humidity are January and February (97%).
The month with the lowest relative humidity is June (55%).
Average rainfall in September
Ilimsk, Russia
- Average rainfall in September: 29mm
The wettest months (with the highest rainfall) are May and August (34mm).
The driest months (with the least rainfall) are January and February (15mm).
Average rainfall days in September
Ilimsk, Russia
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is May (14.5 days).
The month with the least rainy days is February (0.3 days).
Average snowfall in September
Ilimsk, Russia
- Average snowfall in September: 27mm
The month with the highest snowfall is March (207mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Ilimsk, Russia
- Average snowfall days in September: 3.3 days
The month with the highest number of snowfall days is March (22.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Ilimsk, Russia
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 17h and 42min).
The month with the shortest days is December (Average daylight: 6h and 54min).
- Average sunshine in September: 6h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 0h and 42min).
Average sunshine days in September
Ilimsk, Russia
- Average sunshine days in September: 13.6 days
The month with the most sunshine days is July (18.1 days).
The month with the least sunshine days is March (7.1 days).
Average UV index in September
Ilimsk, Russia
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in September
Ilimsk, Russia
- Average cloud cover in September: 51
The month with the most cloud cover is February (Cloud cover 92).
The month with the least cloud cover is June (Cloud cover 34).
Average visibility in September
Ilimsk, Russia
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March and December (4km).
