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September Weather in Moscow, United States

Last updated: June 24, 2025

In Moscow, United States, the average temperature for September hovers around 15°C (59°F). Visitors can expect a range that dips to a chilly -2°C (28°F) and can soar up to a warm 32°C (89°F). During this month, precipitation typically amounts to 72 mm (2.8 in) over approximately 9 days, contributing to an average humidity of 77%. Make sure to pack accordingly!

September Temperature in Moscow

In September in Moscow, the average temperature is 15°C (59°F). Maximums can reach 32°C (89°F), while minimums can drop as low as -2°C (28°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm days and chilly nights.

September Weather in Moscow: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Moscow, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Moscow, September typically has an average temperature of 15°C (59°F), with highs reaching up to 32°C (89°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec171927395262686659473222
Data source: Temperature data for Moscow generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Moscow

In Moscow in September, the precipitation amount is 72 mm (2.8 in) over the course of 9 days.

September Precipitation Trends in Moscow

The chart displays monthly precipitation patterns in Moscow, 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 Moscow, September typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec87837412593921158772131111118
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Moscow

In Moscow in September, humidity is 77%. With an average temperature of 15°C (59°F), this humidity feels like a warm blanket enveloping you, making it essential to stay hydrated and choose light, breathable clothing for comfortable travel.

September Average Humidity in Moscow

This chart illustrates the average monthly humidity levels in Moscow, 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 Moscow is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Moscow

In Moscow in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Moscow.

Maximum UV Index Levels in Moscow for September

The chart shows the monthly maximum UV Index (UVI) for Moscow 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 Moscow typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910987532
Data source: Moscow 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 Moscow Compares to Other Months

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

This table compares monthly weather conditions in Moscow, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)87 mm (3.4 inches)91%low
February Weather-7°C (20°F)83 mm (3.3 inches)89%moderate
March Weather-3°C (27°F)74 mm (2.9 inches)85%moderate
April Weather4°C (40°F)125 mm (4.9 inches)84%very high
May Weather11°C (53°F)93 mm (3.7 inches)78%very high
June Weather17°C (63°F)92 mm (3.6 inches)72%very high
July Weather20°C (68°F)114 mm (4.5 inches)75%very high
August Weather19°C (66°F)87 mm (3.4 inches)74%very high
September Weather15°C (59°F)72 mm (2.8 inches)77%high
October Weather8°C (47°F)131 mm (5.2 inches)85%moderate
November Weather0°C (33°F)111 mm (4.4 inches)86%moderate
December Weather-6°C (22°F)118 mm (4.6 inches)85%low

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