September weather forecast
Meridian, MS

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Weather in September

September signifies the end of summer and beginning of fall in Meridian. The month witnesses the start of a steady decline in temperature, rainfall, and humidity. An appreciable drop in the average high temperature to 86.9°F (30.5°C) from 91.2°F (32.9°C) in August is noted. The city experiences less rainfall in September, dropping to 2.4" (61mm) from 3.27" (83mm) in August. Transitioning into autumn, September carries a charm of its own with cooling weather accompanied by clear, sunny days.

Temperature

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. An average low-temperature of 67.1°F (19.5°C) marks the month of September.

Heat index

Throughout September, the heat index is computed to be a sweltering 98.6°F (37°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In September, the average relative humidity in Meridian, Mississippi, is 74%.

Rainfall

In Meridian, in September, it is raining for 13.9 days, with typically 2.4" (61mm) of accumulated precipitation. Throughout the year, in Meridian, there are 158.9 rainfall days, and 31.57" (802mm) of precipitation is accumulated.

Snowfall

In Meridian, Mississippi, snow does not fall in March through October.

Daylight

In Meridian, the average length of the day in September is 12h and 22min.
On the first day of the month, sunrise is at 6:30 am and sunset at 7:18 pm. On the last day of September, in Meridian, sunrise is at 6:48 am and sunset at 6:40 pm CDT.

Sunshine

In Meridian, the average sunshine in September is 9.1h.

UV index

In Meridian, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In September, the maximum UV index of 6 transforms into these recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
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Frequently asked questions

Is it hot in Meridian during September?

In Meridian, in September, the average high-temperature is 86.9°F (30.5°C), and the average low-temperature is 67.1°F (19.5°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in September is computed to be 98.6°F (37°C).

What is the average humidity in September in Meridian?

The average relative humidity in September in Meridian is 74%.

How much does it rain in Meridian in September?

In Meridian, in September, during 13.9 rainfall days, 2.4" (61mm) of precipitation is typically accumulated.

When it does not snow in Meridian?

March through October are months without snowfall.

What is the average length of the day in September in Meridian?

In September, the average day length in Meridian, Mississippi, is 12h and 22min.

When are sunrise and sunset in September in Meridian?

In September, on the first day of the month, sunrise is at 6:30 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 6:40 pm CDT.

How many hours of sunshine does Meridian have in September?

In Meridian, Mississippi, the average sunshine duration in September is 9.1h.

How high is the UV index in September in Meridian?

In Meridian, Mississippi, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Meridian, MS

Average temperature in September - Meridian, MS
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (54.5°F).

  • Average low temperature in September: 67.1°F

The months with the highest average low temperature are July and August (71.6°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).

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Average pressure in September
Meridian, MS

Average pressure in September - Meridian, MS
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in September
Meridian, MS

Average wind speed in September - Meridian, MS
  • Average wind speed in September: 5mph

The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

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Average humidity in September
Meridian, MS

Average humidity in September - Meridian, MS
  • Average humidity in September: 74%

The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in September
Meridian, MS

Average rainfall in September - Meridian, MS
  • Average rainfall in September: 2.4"

The wettest month (with the highest rainfall) is August (3.27").
The driest month (with the least rainfall) is November (1.81").

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Average rainfall days in September
Meridian, MS

Average rainfall days in September - Meridian, MS
  • Average rainfall days in September: 13.9 days

The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is November (8.1 days).

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Average snowfall in September
Meridian, MS

Average snowfall in September - Meridian, MS
  • Average snowfall in September: 0"

The month with the highest snowfall is December (0.39").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

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Average snowfall days in September
Meridian, MS

Average snowfall days in September - Meridian, MS
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Meridian, MS

Average daylight in September / Average sunshine in September - Meridian, MS
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).

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Average sunshine days in September
Meridian, MS

Average sunshine days in September - Meridian, MS
  • Average sunshine days in September: 14.3 days

The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (8.2 days).

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Average UV index in September
Meridian, MS

Average UV index in September - Meridian, MS
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in September
Meridian, MS

Average cloud cover in September - Meridian, MS
  • Average cloud cover in September: 31

The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is October (Cloud cover 29).

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Average visibility in September
Meridian, MS

Average visibility in September - Meridian, MS
  • Average visibility in September: 5mi

The months with the highest visibility are January, February, March, April, June, August, October, November and December (6mi).
The months with the lowest visibility are May, July and September (5mi).

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Meridian, Mississippi, USA

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