nomadseason

September Weather in Homer, United States

Last updated: June 24, 2025

In September, the average temperature in Homer, United States hovers around 17°C (63°F). The month can bring a chill with minimums dropping to 1°C (34°F), while summer-like highs can reach up to 32°C (90°F). Expect a total precipitation of 99 mm (3.9 in) over approximately 10 days, combined with an average humidity of 78%, making it a unique time to experience the local climate.

September Temperature in Homer

In September in Homer, the average temperature is 17°C (63°F). Maximums can reach 32°C (90°F), while minimums can drop as low as 1°C (34°F). Be prepared for a range of temperatures during your travels.

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

The chart illustrates September temperature patterns in Homer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Homer, September typically has an average temperature of 17°C (63°F), with highs reaching up to 32°C (90°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec242733455766716962523730
Data source: Temperature data for Homer generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Homer

In Homer in September, the total precipitation amount is 99 mm (3.9 in) spread over a period of 10 days.

September Precipitation Trends in Homer

The chart displays monthly precipitation patterns in Homer, 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 Homer, September typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec961009412713410717512799163109108
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Homer

In Homer in September, humidity is 78%. With an average temperature of 17°C (63°F), this humidity feels like a warm, enveloping blanket, making traveling slightly uncomfortable as you navigate the sticky air, prompting the need for frequent breaks in cooler, shaded areas.

September Average Humidity in Homer

This chart illustrates the average monthly humidity levels in Homer, 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 Homer is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Homer

In Homer 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 Homer.

Maximum UV Index Levels in Homer for September

The chart shows the monthly maximum UV Index (UVI) for Homer 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 Homer typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34681010998642
Data source: Homer 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 Homer Compares to Other Months

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

This table compares monthly weather conditions in Homer, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)96 mm (3.8 inches)90%moderate
February Weather-3°C (27°F)100 mm (3.9 inches)90%moderate
March Weather1°C (33°F)94 mm (3.7 inches)87%high
April Weather7°C (45°F)127 mm (5.0 inches)88%very high
May Weather14°C (57°F)134 mm (5.3 inches)82%very high
June Weather19°C (66°F)107 mm (4.2 inches)79%very high
July Weather22°C (71°F)175 mm (6.9 inches)78%very high
August Weather21°C (69°F)126 mm (5.0 inches)76%very high
September Weather17°C (63°F)99 mm (3.9 inches)78%very high
October Weather11°C (53°F)163 mm (6.4 inches)84%high
November Weather3°C (38°F)109 mm (4.3 inches)89%moderate
December Weather-1°C (30°F)108 mm (4.3 inches)86%low

Compare Homer's Climate with Cities Worldwide