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September Weather in Naknek, United States

Last updated: June 24, 2025

In September, the average temperature in Naknek, United States hovers around 10°C (50°F), making it a brisk time of the year. Temperatures can dip as low as -4°C (25°F), while reaching up to 21°C (71°F) on warmer days. Expect precipitation of about 103 mm (4.1 in) across roughly 16 days, contributing to the region's average humidity of a notable 92%.

September Temperature in Naknek

In September in Naknek, the average temperature is 10°C (50°F). Maximums can reach 21°C (71°F), while minimums can drop as low as -4°C (25°F). Be prepared for a variety of weather conditions when traveling during this time.

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

The chart illustrates September temperature patterns in Naknek, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Naknek, September typically has an average temperature of 10°C (50°F), with highs reaching up to 21°C (71°F) and lows dropping to around -4°C (25°F).
JanFebMarAprMayJunJulAugSepOctNovDec172525384754585750412824
Data source: Temperature data for Naknek 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 Naknek

In Naknek in September, the precipitation amount is 103 mm (4.1 in) spread over 16 days.

September Precipitation Trends in Naknek

The chart displays monthly precipitation patterns in Naknek, 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 Naknek, September typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec35636056756063871031046886
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Naknek

In Naknek in September humidity is 92%. With an average temperature of 10°C (50°F), this humidity feels like a chilly, damp cloak wrapping around you, making every step outside feel heavy and each breath a bit more labored, turning exploring into an uncomfortable challenge.

September Average Humidity in Naknek

This chart illustrates the average monthly humidity levels in Naknek, 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 Naknek is approximately 92%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%96%87%79%81%88%89%91%92%90%95%97%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Naknek

In Naknek 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 Naknek for better planning.

Maximum UV Index Levels in Naknek for September

The chart shows the monthly maximum UV Index (UVI) for Naknek 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 Naknek typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123466764211
Data source: Naknek 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 Naknek Compares to Other Months

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

This table compares monthly weather conditions in Naknek, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)35 mm (1.4 inches)95%low
February Weather-4°C (25°F)63 mm (2.5 inches)95%low
March Weather-4°C (26°F)60 mm (2.4 inches)87%moderate
April Weather3°C (38°F)56 mm (2.2 inches)79%moderate
May Weather8°C (47°F)75 mm (3.0 inches)81%high
June Weather12°C (54°F)60 mm (2.4 inches)88%high
July Weather14°C (58°F)63 mm (2.5 inches)89%high
August Weather14°C (57°F)87 mm (3.4 inches)91%high
September Weather10°C (50°F)103 mm (4.1 inches)92%moderate
October Weather5°C (41°F)104 mm (4.1 inches)90%low
November Weather-2°C (28°F)68 mm (2.7 inches)95%low
December Weather-5°C (24°F)86 mm (3.4 inches)97%low

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