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September Weather in Indiana, Peru

Last updated: August 27, 2025

In September, the average temperature in Indiana, Peru hovers around 27°C (80°F), making it a pleasant getaway. Expect minimums of 22°C (71°F) and maximums of 34°C (94°F), perfect for enjoying the outdoors. However, do come prepared for the 23 rainy days, with a total precipitation of 179 mm (7.0 in). With an average humidity of 60%, the climate offers a refreshing yet warm atmosphere. 🌦️

September Temperature in Indiana

In September in Indiana, the average temperature is 27°C (80°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 22°C (71°F). This pleasant weather makes Indiana an ideal destination for travelers seeking a comfortable climate.

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

The chart illustrates September temperature patterns in Indiana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Indiana, September typically has an average temperature of 27°C (80°F), with highs reaching up to 34°C (94°F) and lows dropping to around 22°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec797979797878787980808079
Data source: Temperature data for Indiana 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 Indiana

In Indiana in September, the total precipitation amount reaches 179 mm (7.0 in) over the course of 23 days.

September Precipitation Trends in Indiana

The chart displays monthly precipitation patterns in Indiana, 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 Indiana, September typically receives around 179 mm (7.0 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec258212312321237246175116179216239285
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Indiana

In Indiana in September, humidity is 60%. With an average temperature of 27°C (80°F), this humidity feels like a warm embrace, making travel slightly sticky yet invigorating, as it heightens the sense of adventure and helps you appreciate the vibrant surroundings even more.

September Average Humidity in Indiana

This chart illustrates the average monthly humidity levels in Indiana, 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 Indiana is approximately 60%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%79%82%86%91%85%77%68%60%62%76%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Indiana

In Indiana in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Indiana.

Maximum UV Index Levels in Indiana for September

The chart shows the monthly maximum UV Index (UVI) for Indiana 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 Indiana typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616161412111213141313
Data source: Indiana 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 Indiana Compares to Other Months

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

This table compares monthly weather conditions in Indiana, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)257 mm (10.1 inches)83%extreme
February Weather26°C (80°F)212 mm (8.3 inches)79%extreme
March Weather26°C (79°F)312 mm (12.3 inches)82%extreme
April Weather26°C (79°F)321 mm (12.7 inches)86%extreme
May Weather26°C (79°F)236 mm (9.3 inches)91%extreme
June Weather26°C (78°F)246 mm (9.7 inches)85%extreme
July Weather25°C (78°F)175 mm (6.9 inches)76%extreme
August Weather26°C (79°F)115 mm (4.5 inches)68%extreme
September Weather27°C (80°F)179 mm (7.0 inches)60%extreme
October Weather27°C (80°F)216 mm (8.5 inches)62%extreme
November Weather26°C (80°F)239 mm (9.4 inches)76%extreme
December Weather26°C (79°F)285 mm (11.2 inches)87%extreme

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