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September Weather in Hammond, United States

Last updated: June 24, 2025

In September, the average temperature in Hammond, United States hovers around 17°C (63°F). While you might enjoy the warmth, be prepared for the temperature to dip as low as 0°C (33°F) or rise to a sizzling 33°C (91°F). Expect 108 mm (4.2 in) of precipitation over approximately 9 days, contributing to an average humidity of 81%. Stay comfortable and dry amidst the variability!

September Temperature in Hammond

In September in Hammond, the average temperature is 17°C (63°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as 0°C (33°F). Be prepared for a wide range of temperatures during your travels to Hammond this September.

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

The chart illustrates September temperature patterns in Hammond, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hammond, September typically has an average temperature of 17°C (63°F), with highs reaching up to 33°C (91°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec161732435870736963483223
Data source: Temperature data for Hammond 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 Hammond

In Hammond in September, the precipitation amount is 108 mm (4.2 in) spread over 9 days.

September Precipitation Trends in Hammond

The chart displays monthly precipitation patterns in Hammond, 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 Hammond, September typically receives around 108 mm (4.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec304057871371141061241081014057
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hammond

In Hammond in September humidity is 81%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket enveloping you, making travel slightly oppressive and calling for frequent breaks in air-conditioned spaces to recharge and enjoy your journey comfortably.

September Average Humidity in Hammond

This chart illustrates the average monthly humidity levels in Hammond, 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 Hammond is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%90%85%84%78%80%81%81%81%84%88%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hammond

In Hammond 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 Hammond.

Maximum UV Index Levels in Hammond for September

The chart shows the monthly maximum UV Index (UVI) for Hammond 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 Hammond typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
Data source: Hammond 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 Hammond Compares to Other Months

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

This table compares monthly weather conditions in Hammond, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)30 mm (1.2 inches)87%low
February Weather-9°C (17°F)40 mm (1.6 inches)90%moderate
March Weather0°C (33°F)57 mm (2.2 inches)85%moderate
April Weather6°C (43°F)87 mm (3.4 inches)84%high
May Weather15°C (59°F)137 mm (5.4 inches)78%very high
June Weather21°C (70°F)114 mm (4.5 inches)80%very high
July Weather23°C (73°F)106 mm (4.2 inches)81%very high
August Weather21°C (70°F)124 mm (4.9 inches)81%very high
September Weather17°C (63°F)108 mm (4.2 inches)81%high
October Weather9°C (48°F)101 mm (4.0 inches)84%moderate
November Weather0°C (33°F)40 mm (1.6 inches)88%moderate
December Weather-5°C (23°F)57 mm (2.2 inches)84%low

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