September weather forecastUst-Ilimsk, Russia
September
Weather in September
September, the first month of the autumn in Ust-Ilimsk, is still a cool month, with temperature in the range of an average high of 11.9°C (53.4°F) and an average low of 2.5°C (36.5°F).Temperature
September signals a clear temperature drop, with average high-temperatures decreasing from August's pleasant 21.8°C (71.2°F) to a fresh 11.9°C (53.4°F). The nighttime temperature dips to a cold 2.5°C (36.5°F) on average during September.Humidity
The average relative humidity in September is 72%.Rainfall
In Ust-Ilimsk, during September, the rain falls for 12.5 days and regularly aggregates up to 30mm (1.18") of precipitation. In Ust-Ilimsk, during the entire year, the rain falls for 84 days and collects up to 304mm (11.97") of precipitation.Snowfall
Months with snowfall in Ust-Ilimsk are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 2.4 snowfall days, it receives 23mm (0.91") of snow. In Ust-Ilimsk, Russia, during the entire year, snow falls for 141.2 days and aggregates up to 1065mm (41.93") of snow.Daylight
The average length of the day in September is 12h and 49min.On the first day of the month, sunrise is at 06:09 and sunset at 20:08. On the last day of September, in Ust-Ilimsk, sunrise is at 07:11 and sunset at 18:46 +08.
Sunshine
In Ust-Ilimsk, the average sunshine in September is 6.3h.UV index
The average daily maximum UV index in September is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, a daily UV index of 2 turns into the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ust-Ilimsk, Russia
- Average high temperature in September: 11.9°C
The warmest month (with the highest average high temperature) is July (25.2°C).
The month with the lowest average high temperature is January (-18.1°C).
- Average low temperature in September: 2.5°C
The month with the highest average low temperature is July (12°C).
The coldest month (with the lowest average low temperature) is January (-25.3°C).
Average pressure in September
Ust-Ilimsk, Russia
- Average pressure in September: 1016.2mbar
The month with the highest atmospheric pressure is January (1030.9mbar).
The month with the lowest atmospheric pressure is July (1006.4mbar).
Average wind speed in September
Ust-Ilimsk, Russia
- Average wind speed in September: 9.6km/h
The windiest month (with the highest average wind speed) is May (11km/h).
The calmest month (with the lowest average wind speed) is August (8.2km/h).
Average humidity in September
Ust-Ilimsk, Russia
- Average humidity in September: 72%
The month with the highest relative humidity is February (97%).
The month with the lowest relative humidity is June (52%).
Average rainfall in September
Ust-Ilimsk, Russia
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is August (36mm).
The driest months (with the least rainfall) are January and February (14mm).
Average rainfall days in September
Ust-Ilimsk, Russia
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is December (0.4 days).
Average snowfall in September
Ust-Ilimsk, Russia
- Average snowfall in September: 23mm
The month with the highest snowfall is March (208mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Ust-Ilimsk, Russia
- Average snowfall days in September: 2.4 days
The month with the highest number of snowfall days is November (22.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Ust-Ilimsk, Russia
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 0min).
The month with the shortest days is December (Average daylight: 6h and 36min).
- Average sunshine in September: 6h and 18min
The months with the most sunshine are June and July (Average sunshine: 12h and 36min).
The month with the least sunshine is January (Average sunshine: 0h and 48min).
Average sunshine days in September
Ust-Ilimsk, Russia
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is June (19.8 days).
The month with the least sunshine days is April (7.5 days).
Average UV index in September
Ust-Ilimsk, Russia
- Average UV index in September: 2
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 1).
Average cloud cover in September
Ust-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 32).
Average visibility in September
Ust-Ilimsk, Russia
- Average visibility in September: 9km
The months with the highest visibility are June and July (10km).
The months with the lowest visibility are January, February, March and December (4km).
