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September Weather in Plum Grove, United States

Last updated: June 24, 2025

In Plum Grove, United States, the average temperature in September hovers around 26°C (80°F), creating a comfortable climate for outdoor activities. Be prepared for a wide temperature range, with minimums dipping to 10°C (51°F) and maximums reaching up to 38°C (101°F). Expect 79 mm (3.1 in) of precipitation spread over 9 days, accompanied by an average humidity level of 65%.

September Temperature in Plum Grove

In September in Plum Grove, the average temperature is 26°C (80°F). Maximums can reach 38°C (101°F), while minimums can drop to as low as 10°C (51°F). Be prepared for a wide range of temperatures when traveling during this month.

September Weather in Plum Grove: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Plum Grove, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Plum Grove, September typically has an average temperature of 26°C (80°F), with highs reaching up to 38°C (101°F) and lows dropping to around 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec485061667581858579685752
Data source: Temperature data for Plum Grove 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 Plum Grove

In Plum Grove in September, the precipitation amount is 79 mm (3.1 in) spread over 9 days.

September Precipitation Trends in Plum Grove

The chart displays monthly precipitation patterns in Plum Grove, 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 Plum Grove, September typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec619790121180876599791395064
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Plum Grove

In Plum Grove in September humidity is 65%. With an average temperature of 26°C (80°F), this humidity feels like a warm, sticky embrace, making travel less comfortable as you navigate the sights.

September Average Humidity in Plum Grove

This chart illustrates the average monthly humidity levels in Plum Grove, 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 Plum Grove is approximately 65%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%78%78%81%78%73%66%65%72%82%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Plum Grove

In Plum Grove in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Plum Grove.

Maximum UV Index Levels in Plum Grove for September

The chart shows the monthly maximum UV Index (UVI) for Plum Grove 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 Plum Grove typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101111111110864
Data source: Plum Grove 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 Plum Grove Compares to Other Months

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

This table compares monthly weather conditions in Plum Grove, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (48°F)61 mm (2.4 inches)80%moderate
February Weather10°C (50°F)97 mm (3.8 inches)79%high
March Weather16°C (61°F)90 mm (3.5 inches)78%very high
April Weather19°C (66°F)121 mm (4.8 inches)78%very high
May Weather24°C (75°F)180 mm (7.1 inches)81%extreme
June Weather27°C (82°F)87 mm (3.4 inches)78%extreme
July Weather29°C (85°F)65 mm (2.6 inches)73%extreme
August Weather29°C (85°F)99 mm (3.9 inches)66%extreme
September Weather26°C (80°F)79 mm (3.1 inches)65%very high
October Weather20°C (69°F)139 mm (5.5 inches)72%very high
November Weather14°C (58°F)50 mm (2.0 inches)82%high
December Weather11°C (53°F)64 mm (2.5 inches)87%moderate

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