September weather forecast
Mississippi, USA

September in Mississippi marks the beginning of a transition from the hot and humid summer to the more temperate and comfortable autumn season. The average low temperatures in the northern regions are around 62°F (16.7°C), and the southern areas are gradually cooling as well. September typically sees a reduction in humidity, leading to more comfortable days and nights, but the remnants of summer's heat can still be felt.

The shift from August's oppressive conditions to September's more moderate weather is a welcome change across the state. The influence of tropical air starts to wane, and the frequency of thunderstorms decreases. Tropical cyclones may still affect the area, particularly in the early part of the month.

September's temperatures usually vary from 62°F (16.7°C) in the northern parts to warmer readings in the south. The gradual decrease in both temperature and humidity from August to September heralds the beginning of autumn, offering a respite from the stifling summer months.

Rainfall in September starts to decline, with the fall season yielding between 8" (203mm) to 13" (330mm) of rain, making it favorable for the harvesting of crops. The landscapes begin to show the first signs of autumn's influence, with the greenery slowly giving way to more varied hues. September's weather in Mississippi represents a transitional period, as the state moves from the intensity of summer towards the more pleasant and enjoyable conditions of autumn, with its cooler temperatures and reduced humidity.

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• Jackson - September »
  On the last day of September, in Jackson, sunrise is at 6:54 am and sunset at 6:46 pm CDT. September's arrival in Jackson brings an average high-temperature of a still tropical 87.3°F (30.7°C), demonstrating subtle variation from the preceding month.
• Gulfport - September »
  In Gulfport in September, the average water temperature is 82.9°F (28.3°C). The average heat index, which represents the influence of relative humidity on air temperature, in September is computed to be 98.6°F (37°C).
• Southaven - September »
  In Southaven during September, the rain falls for 12.3 days and regularly aggregates up to 1.61" (41mm) of precipitation. September indicates the end of summer and the beginning of autumn, bringing slightly lower temperatures and shorter days in Southaven.
• Hattiesburg - September »
  On the first day of September in Hattiesburg, sunrise is at 6:33 am and sunset at 7:20 pm. On the last day of September, in Hattiesburg, sunrise is at 6:50 am and sunset at 6:43 pm CDT.
• Biloxi - September »
  In Biloxi in September, the average water temperature is 83.1°F (28.4°C). In Biloxi during September, the rain falls for 19.2 days and regularly aggregates up to 3.86" (98mm) of precipitation.
• Meridian - September »
  In Meridian, in September, during 13.9 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Meridian records an average high-temperature of a still tropical 86.9°F (30.5°C) as September arrives, nearly mirroring the previous month's climate.
• Tupelo - September »
  In Tupelo in September, it is raining for 11.5 days, with typically 1.81" (46mm) of accumulated precipitation. In Tupelo in September, it is raining for 11.5 days, with typically 1.81" (46mm) of accumulated precipitation.
• Greenville - September »
  In Greenville in September, it is raining for 9.6 days, with typically 0.71" (18mm) of accumulated precipitation. On the first day of September in Greenville, sunrise is at 6:38 am and sunset at 7:29 pm.
• Olive Branch - September »
  The month with the least rainfall in Olive Branch is September, when the rain falls for 13.1 days and typically collects 1.73" (44mm) of precipitation. On the first day of September in Olive Branch sunrise is at 6:32 am and sunset at 7:25 pm.
• Horn Lake - September »
  In Horn Lake, in September, during 12.3 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. On the first day of September in Horn Lake, sunrise is at 6:33 am and sunset at 7:26 pm.
• Clinton - September »
  The month of September in Clinton, Mississippi signals the arrival of fall, with the temperature beginning to drop, and an average high temperature of 87.4°F (30.8°C). On the first day of September in Clinton sunrise is at 6:36 am and sunset at 7:25 pm.
• Pearl - September »
  On the first day of September in Pearl sunrise is at 6:36 am and sunset at 7:24 pm. In Pearl, Mississippi, in September, it is raining for 11.9 days, with typically 1.89" (48mm) of accumulated precipitation.