September weather forecast
McCallum, MS

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Weather in September

September, the first month of the autumn in McCallum, is still a tropical month, with temperature in the range of an average high of 87.8°F (31°C) and an average low of 68°F (20°C).

Temperature

McCallum, Mississippi, sees the arrival of September with an average high-temperature of a still tropical 87.8°F (31°C), indicating a subtle variation from August. During September, the temperature in McCallum tends to dip to an average of 68°F (20°C) at night.

Heat index

During September, the heat index is appraised at an extremely hot 104°F (40°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in September is 76%.

Rainfall

In McCallum, Mississippi, in September, during 17.5 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. In McCallum, during the entire year, the rain falls for 177.1 days and collects up to 36.42" (925mm) of precipitation.

Snowfall

April through November are months without snowfall in McCallum.

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of September in McCallum, sunrise is at 6:33 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:42 pm CDT.

Sunshine

In September, the average sunshine is 9.1h.

UV index

In September, the average daily maximum UV index in McCallum is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 6 during September translates into the following recommendations:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in McCallum in September?

The high-temperature in McCallum during September is 87.8°F (31°C) and the low-temperature is 68°F (20°C). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is appraised at 104°F (40°C).

What is the average humidity in September in McCallum?

The average relative humidity in September in McCallum, Mississippi, is 76%.

How many days does it rain in September in McCallum?

In McCallum, in September, during 17.5 rainfall days, 2.91" (74mm) of precipitation is typically accumulated.

When it does not snow in McCallum?

In McCallum, snow does not fall in April through November.

How many hours of daylight does McCallum have in September?

In September, the average day length in McCallum, Mississippi, is 12h and 20min.

When is the sunrise / sunset in September in McCallum?

In September, on the first day of the month, sunrise is at 6:33 am and sunset at 7:19 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 6:42 pm CDT.

How many hours of sunshine does McCallum have in September?

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

How high is the UV index in September in McCallum?

In September, the average daily maximum UV index in McCallum is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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
McCallum, MS

Average temperature in September - McCallum, MS
  • Average high temperature in September: 87.8°F

The warmest month (with the highest average high temperature) is August (91.8°F).
The month with the lowest average high temperature is January (56.8°F).

  • Average low temperature in September: 68°F

The month with the highest average low temperature is August (73°F).
The coldest month (with the lowest average low temperature) is January (39.7°F).

Average pressure in September
McCallum, MS

Average pressure in September - McCallum, MS
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).

Average wind speed in September
McCallum, MS

Average wind speed in September - McCallum, MS
  • Average wind speed in September: 4.7mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is July (4.4mph).

Average humidity in September
McCallum, MS

Average humidity in September - McCallum, MS
  • Average humidity in September: 76%

The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall in September
McCallum, MS

Average rainfall in September - McCallum, MS
  • Average rainfall in September: 2.91"

The wettest month (with the highest rainfall) is July (4.37").
The driest month (with the least rainfall) is November (1.77").

Average rainfall days in September
McCallum, MS

Average rainfall days in September - McCallum, MS
  • Average rainfall days in September: 17.5 days

The month with the highest number of rainy days is August (22.3 days).
The month with the least rainy days is November (8.7 days).

Average snowfall in September
McCallum, MS

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

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

Average snowfall days in September
McCallum, MS

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

The month with the highest number of snowfall days is January (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

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

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

  • 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 54min).

Average sunshine days in September
McCallum, MS

Average sunshine days in September - McCallum, MS
  • Average sunshine days in September: 10.3 days

The months with the most sunshine days are October and November (19.8 days).
The month with the least sunshine days is August (6.4 days).

Average UV index in September
McCallum, MS

Average UV index in September - McCallum, 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).

Average cloud cover in September
McCallum, MS

Average cloud cover in September - McCallum, MS
  • Average cloud cover in September: 32

The months with the most cloud cover are February and December (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 29).

Average visibility in September
McCallum, MS

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

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

McCallum, Mississippi, USA

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