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September Weather in Lena, United States

Last updated: June 24, 2025

In September, the average temperature in Lena, United States is a comfortable 19°C (66°F). While it can dip to a chilly 3°C (38°F) at night, daytime highs can reach a warm 33°C (91°F). With 116 mm (4.6 in) of rain spread over 10 days, expect some wet spells, but the average humidity remains high at 79%. Enjoy the weather, but don’t forget your umbrella!

September Temperature in Lena

In September in Lena, the average temperature is 19°C (66°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as 3°C (38°F). This climate makes Lena an ideal destination for travelers seeking a mix of warm and cool experiences.

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

The chart illustrates September temperature patterns in Lena, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lena, September typically has an average temperature of 19°C (66°F), with highs reaching up to 33°C (91°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec222437476071757266523730
Data source: Temperature data for Lena 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 Lena

In Lena in September, the total precipitation amount is 116 mm (4.6 in) over a span of 10 days.

September Precipitation Trends in Lena

The chart displays monthly precipitation patterns in Lena, 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 Lena, September typically receives around 116 mm (4.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec57576696143126841001161114549
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lena

In Lena in September humidity is 79%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, making it feel much warmer than the actual temperature and creating a heavy, sticky atmosphere that can be a bit uncomfortable for traveling.

September Average Humidity in Lena

This chart illustrates the average monthly humidity levels in Lena, 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 Lena is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lena

In Lena in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Lena.

Maximum UV Index Levels in Lena for September

The chart shows the monthly maximum UV Index (UVI) for Lena 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 Lena typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098532
Data source: Lena 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 Lena Compares to Other Months

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

This table compares monthly weather conditions in Lena, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)57 mm (2.2 inches)85%moderate
February Weather-5°C (24°F)57 mm (2.2 inches)85%moderate
March Weather3°C (38°F)66 mm (2.6 inches)85%high
April Weather8°C (47°F)96 mm (3.8 inches)85%very high
May Weather16°C (60°F)143 mm (5.6 inches)78%very high
June Weather22°C (72°F)126 mm (5.0 inches)80%very high
July Weather24°C (75°F)84 mm (3.3 inches)78%very high
August Weather22°C (72°F)100 mm (3.9 inches)76%very high
September Weather19°C (66°F)116 mm (4.6 inches)79%very high
October Weather11°C (52°F)111 mm (4.4 inches)83%moderate
November Weather3°C (37°F)45 mm (1.8 inches)88%moderate
December Weather-1°C (30°F)49 mm (1.9 inches)81%low

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