September Weather in Ust'-Ilimsk, Russian Federation

Last updated: August 27, 2025

In Ust'-Ilimsk, Russian Federation, the average temperature in September hovers around 8°C (47°F). Expect a chilly minimum of -5°C (24°F) and a warm maximum of 26°C (79°F) during this time. The region experiences a total precipitation of 58 mm (2.3 in) spread over approximately 12 days, contributing to an average humidity level of 79%. Stay prepared for the varied weather conditions!

September Temperature in Ust'-Ilimsk

In September in Ust'-Ilimsk, the average temperature is 8°C (47°F), with maximums reaching 26°C (79°F) and minimums dropping as low as -5°C (24°F). This varied climate makes it essential for travelers to be prepared for both warm and chilly weather.

September Weather in Ust'-Ilimsk: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ust'-Ilimsk, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ust'-Ilimsk, September typically has an average temperature of 8°C (47°F), with highs reaching up to 26°C (79°F) and lows dropping to around -5°C (24°F).

Data source: Temperature data for Ust'-Ilimsk generated using information from the Copernicus Climate Change Service.

September Precipitation in Ust'-Ilimsk

In Ust'-Ilimsk in September, the precipitation amount is 58 mm (2.3 in) spread over 12 days.

September Precipitation Trends in Ust'-Ilimsk

The chart displays monthly precipitation patterns in Ust'-Ilimsk, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Ust'-Ilimsk, September typically receives around 58 mm (2.3 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Ust'-Ilimsk

In Ust'-Ilimsk in September, humidity is 79%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and requiring extra layers to stay comfortable while traveling.

September Average Humidity in Ust'-Ilimsk

This chart illustrates the average monthly humidity levels in Ust'-Ilimsk, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Ust'-Ilimsk is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ust'-Ilimsk

In Ust'-Ilimsk in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Ust'-Ilimsk for better planning.

Maximum UV Index Levels in Ust'-Ilimsk for September

The chart shows the monthly maximum UV Index (UVI) for Ust'-Ilimsk in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Ust'-Ilimsk typically reaches 4, which falls under the moderate exposure category.

Data source: Ust'-Ilimsk September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Ust'-Ilimsk Compares to Other Months

Weather in Ust'-Ilimsk varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Ust'-Ilimsk, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Ust'-Ilimsk, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-21°C (-6°F)	24 mm (0.9 inches)	99%	low
February Weather	-18°C (-1°F)	22 mm (0.9 inches)	96%	low
March Weather	-7°C (19°F)	30 mm (1.2 inches)	88%	moderate
April Weather	1°C (34°F)	28 mm (1.1 inches)	84%	moderate
May Weather	8°C (47°F)	45 mm (1.8 inches)	76%	moderate
June Weather	17°C (63°F)	51 mm (2.0 inches)	62%	high
July Weather	19°C (66°F)	41 mm (1.6 inches)	67%	high
August Weather	17°C (62°F)	53 mm (2.1 inches)	65%	high
September Weather	8°C (47°F)	58 mm (2.3 inches)	79%	moderate
October Weather	0°C (33°F)	40 mm (1.6 inches)	92%	moderate
November Weather	-12°C (11°F)	44 mm (1.7 inches)	99%	low
December Weather	-22°C (-6°F)	45 mm (1.8 inches)	100%	low