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September Weather in McMinnville, United States

Last updated: June 24, 2025

In McMinnville, United States, the average temperature in September is a pleasant 17°C (63°F). However, it can range from a chilly 4°C (39°F) to a scorching 36°C (97°F). Be prepared for some moisture as well, with an average precipitation of 67 mm (2.7 in) over 7 days. The average humidity sits at a comfortable 71%, making for a typically mild and refreshing atmosphere.

September Temperature in McMinnville

In September in McMinnville, the average temperature is 17°C (63°F). Maximum temperatures can reach 36°C (97°F), while minimums can drop as low as 4°C (39°F). Be prepared for a wide range of temperatures during your travels.

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

The chart illustrates September temperature patterns in McMinnville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In McMinnville, September typically has an average temperature of 17°C (63°F), with highs reaching up to 36°C (97°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec414044495662676863524540
Data source: Temperature data for McMinnville 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 McMinnville

In McMinnville in September, the precipitation amount is 67 mm (2.7 in) over a span of 7 days.

September Precipitation Trends in McMinnville

The chart displays monthly precipitation patterns in McMinnville, 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 McMinnville, September typically receives around 67 mm (2.7 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec19117514412358465668104163209
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in McMinnville

In McMinnville in September, humidity is 71%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making outdoor activities enjoyable yet a bit sticky, so travelers should stay hydrated and take breaks in the shade.

September Average Humidity in McMinnville

This chart illustrates the average monthly humidity levels in McMinnville, 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 McMinnville is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%85%83%83%84%82%74%71%81%87%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in McMinnville

In McMinnville 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 McMinnville.

Maximum UV Index Levels in McMinnville for September

The chart shows the monthly maximum UV Index (UVI) for McMinnville 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 McMinnville typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec23579101097532
Data source: McMinnville 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 McMinnville Compares to Other Months

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

This table compares monthly weather conditions in McMinnville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)191 mm (7.5 inches)85%low
February Weather4°C (40°F)175 mm (6.9 inches)84%moderate
March Weather7°C (45°F)144 mm (5.7 inches)85%moderate
April Weather10°C (50°F)123 mm (4.8 inches)83%high
May Weather13°C (56°F)58 mm (2.3 inches)83%very high
June Weather17°C (62°F)46 mm (1.8 inches)83%very high
July Weather19°C (67°F)5 mm (0.2 inches)82%very high
August Weather20°C (69°F)6 mm (0.3 inches)74%very high
September Weather17°C (63°F)67 mm (2.7 inches)71%high
October Weather11°C (52°F)104 mm (4.1 inches)81%moderate
November Weather7°C (46°F)163 mm (6.4 inches)87%moderate
December Weather5°C (40°F)209 mm (8.2 inches)87%low

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