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September Weather in Hilliard, United States

Last updated: June 24, 2025

In September, the average temperature in Hilliard, United States hovers around 26°C (79°F). Expect a comfortable range, with minimums dipping to 16°C (60°F) and maximums soaring up to 38°C (100°F). Be prepared for some rain, as 137 mm (5.4 in) of precipitation typically falls over 14 days, contributing to an average humidity level of 83%.

September Temperature in Hilliard

In September in Hilliard, the average temperature is 26°C (79°F). Maximums can reach 38°C (100°F), and minimums can be as low as 16°C (60°F). It's an ideal time for travelers seeking warm weather while also enjoying cooler evenings.

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

The chart illustrates September temperature patterns in Hilliard, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hilliard, September typically has an average temperature of 26°C (79°F), with highs reaching up to 38°C (100°F) and lows dropping to around 16°C (60°F).
JanFebMarAprMayJunJulAugSepOctNovDec546064697579818179736157
Data source: Temperature data for Hilliard 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 Hilliard

In Hilliard in September, the precipitation amount is 137 mm (5.4 in) spread over 14 days.

September Precipitation Trends in Hilliard

The chart displays monthly precipitation patterns in Hilliard, 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 Hilliard, September typically receives around 137 mm (5.4 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec53684368781561631631375666104
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hilliard

In Hilliard in September, humidity is 83%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making travel an exercise in endurance as the air clings to your skin and saps your energy.

September Average Humidity in Hilliard

This chart illustrates the average monthly humidity levels in Hilliard, 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 Hilliard is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%79%78%73%72%74%82%82%83%79%82%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hilliard

In Hilliard 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 Hilliard.

Maximum UV Index Levels in Hilliard for September

The chart shows the monthly maximum UV Index (UVI) for Hilliard 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 Hilliard typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579101111111110864
Data source: Hilliard 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 Hilliard Compares to Other Months

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

This table compares monthly weather conditions in Hilliard, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (55°F)53 mm (2.1 inches)84%moderate
February Weather16°C (61°F)68 mm (2.7 inches)79%high
March Weather18°C (64°F)43 mm (1.7 inches)78%very high
April Weather21°C (69°F)68 mm (2.7 inches)72%very high
May Weather24°C (76°F)78 mm (3.1 inches)72%extreme
June Weather26°C (79°F)156 mm (6.2 inches)74%extreme
July Weather27°C (81°F)163 mm (6.4 inches)82%extreme
August Weather27°C (81°F)163 mm (6.4 inches)82%extreme
September Weather26°C (79°F)137 mm (5.4 inches)83%very high
October Weather23°C (74°F)56 mm (2.2 inches)79%very high
November Weather16°C (62°F)66 mm (2.6 inches)82%high
December Weather14°C (57°F)104 mm (4.1 inches)85%moderate

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