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September Weather in Jackson, United States

Last updated: June 24, 2025

In Jackson, United States, the average temperature for September typically hovers around 26°C (79°F). However, don’t be surprised if it dips to a cool 13°C (55°F) or rises to a scorching 39°C (103°F). This month also sees about 112 mm (4.4 in) of precipitation spread over 11 days, contributing to an average humidity of 80%. Enjoy the unique blend of warmth and moisture throughout your stay!

September Temperature in Jackson

In September in Jackson, the average temperature is 26°C (79°F). Maximums can reach 39°C (103°F), while minimums can dip as low as 13°C (55°F). This diverse temperature range makes Jackson an ideal destination for travelers seeking both warmth and cool respite.

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

The chart illustrates September temperature patterns in Jackson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jackson, September typically has an average temperature of 26°C (79°F), with highs reaching up to 39°C (103°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec515763677580828279725854
Data source: Temperature data for Jackson 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 Jackson

In Jackson in September, the precipitation amount is 112 mm (4.4 in) that occurs over the course of 11 days.

September Precipitation Trends in Jackson

The chart displays monthly precipitation patterns in Jackson, 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 Jackson, September typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec11810711312911117913411911211369139
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Jackson

In Jackson in September humidity is 80%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket, making outdoor activities feel sticky and exhausting, potentially dampening the travel experience and necessitating frequent breaks to cool down and hydrate.

September Average Humidity in Jackson

This chart illustrates the average monthly humidity levels in Jackson, 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 Jackson is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%78%73%71%79%78%80%76%83%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Jackson

In Jackson 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 Jackson.

Maximum UV Index Levels in Jackson for September

The chart shows the monthly maximum UV Index (UVI) for Jackson 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 Jackson typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111111111110864
Data source: Jackson 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 Jackson Compares to Other Months

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

This table compares monthly weather conditions in Jackson, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (51°F)118 mm (4.6 inches)82%moderate
February Weather14°C (57°F)107 mm (4.2 inches)80%high
March Weather17°C (63°F)113 mm (4.4 inches)80%very high
April Weather19°C (67°F)129 mm (5.1 inches)78%extreme
May Weather24°C (75°F)111 mm (4.4 inches)73%extreme
June Weather27°C (80°F)179 mm (7.0 inches)71%extreme
July Weather28°C (82°F)134 mm (5.3 inches)79%extreme
August Weather28°C (82°F)119 mm (4.7 inches)78%extreme
September Weather26°C (79°F)112 mm (4.4 inches)80%very high
October Weather22°C (72°F)113 mm (4.5 inches)76%very high
November Weather14°C (58°F)69 mm (2.7 inches)83%high
December Weather12°C (54°F)139 mm (5.5 inches)87%moderate

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