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September Weather in Terre Haute, United States

Last updated: June 24, 2025

In September, the average temperature in Terre Haute, United States is a pleasant 21°C (70°F), with a minimum dipping to 6°C (44°F) and a maximum soaring to 33°C (92°F). Expect some rain, as 119 mm (4.7 in) of precipitation typically falls over 8 days. The average humidity hovers around 73%, making for a comfortably warm atmosphere.

September Temperature in Terre Haute

In September in Terre Haute, the average temperature is 21°C (70°F). Maximum can reach 33°C (92°F) and minimum can be as low as 6°C (44°F). This makes it a great time to visit Terre Haute, offering pleasant weather for outdoor activities while also allowing for cooler evenings.

September Weather in Terre Haute: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Terre Haute, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Terre Haute, September typically has an average temperature of 21°C (70°F), with highs reaching up to 33°C (92°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec252842516475787569544034
Data source: Temperature data for Terre Haute 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 Terre Haute

In Terre Haute in September, the precipitation amount is 119 mm (4.7 in) over a span of 8 days.

September Precipitation Trends in Terre Haute

The chart displays monthly precipitation patterns in Terre Haute, 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 Terre Haute, September typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec494710480157119102881191395435
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Terre Haute

In Terre Haute in September, humidity is 73%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace that can make outdoor activities feel sweltering, so it's essential to stay hydrated and take breaks in the shade while exploring.

September Average Humidity in Terre Haute

This chart illustrates the average monthly humidity levels in Terre Haute, 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 Terre Haute is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%80%77%78%77%81%81%77%73%75%85%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Terre Haute

In Terre Haute 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 Terre Haute.

Maximum UV Index Levels in Terre Haute for September

The chart shows the monthly maximum UV Index (UVI) for Terre Haute 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 Terre Haute typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111108643
Data source: Terre Haute 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 Terre Haute Compares to Other Months

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

This table compares monthly weather conditions in Terre Haute, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)49 mm (1.9 inches)78%moderate
February Weather-2°C (28°F)47 mm (1.8 inches)80%moderate
March Weather6°C (42°F)104 mm (4.1 inches)77%high
April Weather10°C (51°F)80 mm (3.2 inches)77%very high
May Weather18°C (64°F)157 mm (6.2 inches)77%very high
June Weather24°C (76°F)119 mm (4.7 inches)81%extreme
July Weather26°C (78°F)102 mm (4.0 inches)81%extreme
August Weather24°C (75°F)87 mm (3.4 inches)77%very high
September Weather21°C (70°F)119 mm (4.7 inches)73%very high
October Weather12°C (54°F)139 mm (5.5 inches)75%high
November Weather5°C (40°F)54 mm (2.1 inches)85%moderate
December Weather1°C (34°F)35 mm (1.4 inches)83%moderate

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