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September Weather in Meridian, United States

Last updated: June 24, 2025

In Meridian, United States, the average temperature in September hovers around 26°C (79°F), making it a pleasantly warm destination. However, be prepared for temperature extremes, with minimums dipping to 9°C (49°F) and soaring maximums reaching 38°C (101°F). Visitors can expect 74 mm (2.9 in) of precipitation over approximately 8 days, resulting in an average humidity level of 66%.

September Temperature in Meridian

In September in Meridian, the average temperature is 26°C (79°F), with maximums reaching up to 38°C (101°F) and minimums dropping as low as 9°C (49°F). It's advisable to pack a range of clothing to accommodate both warm and cool temperatures during your travels.

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

The chart illustrates September temperature patterns in Meridian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Meridian, September typically has an average temperature of 26°C (79°F), with highs reaching up to 38°C (101°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec485061667582868579685752
Data source: Temperature data for Meridian 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 Meridian

In Meridian in September, the precipitation amount is 74 mm (2.9 in) over a period of 8 days.

September Precipitation Trends in Meridian

The chart displays monthly precipitation patterns in Meridian, 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 Meridian, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec50798281155805395741214446
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Meridian

In Meridian in September, humidity is 66%. With an average temperature of 26°C (79°F), this humidity feels like a warm, enveloping blanket, making outdoor activities invigorating yet requiring occasional breaks in the shade to stay comfortable while traveling.

September Average Humidity in Meridian

This chart illustrates the average monthly humidity levels in Meridian, 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 Meridian is approximately 66%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%78%77%78%82%78%69%63%66%73%84%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Meridian

In Meridian 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 Meridian.

Maximum UV Index Levels in Meridian for September

The chart shows the monthly maximum UV Index (UVI) for Meridian 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 Meridian typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478101112111110864
Data source: Meridian 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 Meridian Compares to Other Months

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

This table compares monthly weather conditions in Meridian, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (48°F)50 mm (2.0 inches)78%moderate
February Weather10°C (50°F)78 mm (3.1 inches)78%high
March Weather16°C (61°F)82 mm (3.2 inches)77%very high
April Weather19°C (66°F)81 mm (3.2 inches)78%very high
May Weather24°C (75°F)155 mm (6.1 inches)82%extreme
June Weather28°C (82°F)80 mm (3.2 inches)78%extreme
July Weather30°C (86°F)53 mm (2.1 inches)69%extreme
August Weather30°C (85°F)95 mm (3.7 inches)63%extreme
September Weather26°C (79°F)74 mm (2.9 inches)66%very high
October Weather20°C (69°F)120 mm (4.7 inches)73%very high
November Weather14°C (58°F)44 mm (1.7 inches)84%high
December Weather11°C (53°F)46 mm (1.8 inches)87%moderate

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