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September Weather in Meridian, United States

Last updated: June 24, 2025

In Meridian, United States, the average temperature in September is a pleasant 25°C (78°F), making it an ideal time to explore. However, be prepared for a temperature range that can swing from a cool 11°C (53°F) to a sizzling 39°C (102°F). During this month, you can expect about 95 mm (3.7 in) of precipitation spread over 9 days, so a light raincoat might come in handy. With an average humidity of 74%, the weather is sure to keep things feeling fresh and vibrant!

September Temperature in Meridian

In September in Meridian, the average temperature is 25°C (78°F). Maximum can reach 39°C (102°F) and minimum can be as low as 11°C (53°F). For an enjoyable travel experience, be sure to pack layers to accommodate the warm days and cooler nights.

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 25°C (78°F), with highs reaching up to 39°C (102°F) and lows dropping to around 11°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec495461657479818178695552
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 95 mm (3.7 in) over the course of 9 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 95 mm (3.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1071431171291231621191289510371126
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 74%. With an average temperature of 25°C (78°F), this humidity feels like you're enveloped in a warm, thick blanket, making outdoor activities feel more strenuous and necessitating frequent breaks and hydration for comfortable travel.

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 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%82%79%82%77%74%73%85%88%
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.
JanFebMarAprMayJunJulAugSepOctNovDec478111111111110864
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 (49°F)107 mm (4.2 inches)85%moderate
February Weather12°C (55°F)143 mm (5.6 inches)84%high
March Weather16°C (61°F)117 mm (4.6 inches)82%very high
April Weather18°C (65°F)129 mm (5.1 inches)82%extreme
May Weather23°C (74°F)123 mm (4.8 inches)82%extreme
June Weather26°C (79°F)162 mm (6.4 inches)79%extreme
July Weather27°C (81°F)119 mm (4.7 inches)82%extreme
August Weather27°C (81°F)128 mm (5.0 inches)77%extreme
September Weather25°C (78°F)95 mm (3.7 inches)74%very high
October Weather21°C (70°F)103 mm (4.1 inches)73%very high
November Weather13°C (56°F)71 mm (2.8 inches)85%high
December Weather11°C (52°F)126 mm (5.0 inches)88%moderate

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