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September Weather in Onaway, United States

Last updated: June 24, 2025

In Onaway, United States, the average temperature in September hovers around 16°C (61°F). Expect minimum temperatures to plummet to -2°C (29°F), while highs can soar up to 35°C (96°F). With an average humidity of 79% and 75 mm (2.9 in) of precipitation spread over 11 days, the weather is as dynamic as it is interesting.

September Temperature in Onaway

In September in Onaway, the average temperature is 16°C (61°F). Maximums can reach 35°C (96°F), and minimums can be as low as -2°C (29°F). Travelers should be prepared for a wide range of temperatures, making layers essential for comfort during their visit.

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

The chart illustrates September temperature patterns in Onaway, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Onaway, September typically has an average temperature of 16°C (61°F), with highs reaching up to 35°C (96°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec202029415565716860483427
Data source: Temperature data for Onaway 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 Onaway

In Onaway in September, the precipitation amount is 75 mm (2.9 in) over the course of 11 days.

September Precipitation Trends in Onaway

The chart displays monthly precipitation patterns in Onaway, 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 Onaway, September typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec49575895991039098751246665
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Onaway

In Onaway in September humidity is 79%. With an average temperature of 16°C (61°F), this humidity feels like a warm, moist embrace, making travel a bit more challenging as the air tends to weigh heavily, but it also offers a refreshing atmosphere perfect for exploring local sights and enjoying nature.

September Average Humidity in Onaway

This chart illustrates the average monthly humidity levels in Onaway, 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 Onaway is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%91%87%86%79%75%75%75%79%85%88%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Onaway

In Onaway 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 Onaway.

Maximum UV Index Levels in Onaway for September

The chart shows the monthly maximum UV Index (UVI) for Onaway 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 Onaway typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910987532
Data source: Onaway 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 Onaway Compares to Other Months

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

This table compares monthly weather conditions in Onaway, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (20°F)49 mm (1.9 inches)92%low
February Weather-7°C (21°F)57 mm (2.2 inches)91%moderate
March Weather-1°C (30°F)58 mm (2.3 inches)87%moderate
April Weather5°C (41°F)95 mm (3.8 inches)85%high
May Weather13°C (55°F)99 mm (3.9 inches)79%very high
June Weather19°C (66°F)103 mm (4.0 inches)75%very high
July Weather21°C (71°F)90 mm (3.6 inches)75%very high
August Weather20°C (68°F)98 mm (3.9 inches)75%very high
September Weather16°C (61°F)75 mm (2.9 inches)79%high
October Weather9°C (49°F)124 mm (4.9 inches)85%moderate
November Weather1°C (35°F)66 mm (2.6 inches)88%moderate
December Weather-3°C (27°F)65 mm (2.5 inches)89%low

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