September weather forecast
Grace, MS

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Weather in September

The first month of the autumn, September, is also a hot month in Grace, Mississippi, with temperature in the range of an average low of 67.6°F (19.8°C) and an average high of 86.9°F (30.5°C).

Temperature

Entering September, Grace's average high-temperature reads a still tropical 86.9°F (30.5°C), indicating a close resemblance to the previous month's climate. Throughout September, the average low-temperature dips to a comfortable 67.6°F (19.8°C).

Heat index

Throughout September, the heat index is evaluated at a fiery hot 98.6°F (37°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. 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. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in September is 71%.

Rainfall

In Grace, in September, during 12.9 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. In Grace, during the entire year, the rain falls for 163.6 days and collects up to 39.61" (1006mm) of precipitation.

Snowfall

In Grace, Mississippi, snow does not fall in April through October and December.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of September, sunrise is at 6:38 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:49 pm CDT.

Sunshine

In September, the average sunshine is 10h.

UV index

In Grace, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during September?

The high-temperature, in September, in Grace, is 86.9°F (30.5°C), while the low-temperature averages to 67.6°F (19.8°C). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 98.6°F (37°C).

What is the average humidity in September?

The average relative humidity in September is 71%.

How much does it rain in September?

In Grace, Mississippi, in September, it is raining for 12.9 days, with typically 2.28" (58mm) of accumulated precipitation.

When it does not snow?

In Grace, snow does not fall in April through October and December.

What is the average length of the day in September?

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

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:38 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:49 pm CDT.

How many hours of sunshine does Grace have in September?

The average sunshine duration in September is 10h.

What is the UV index reading in September in Grace?

In Grace, 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
Grace, MS

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

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (52.9°F).

  • Average low temperature in September: 67.6°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).

Average pressure in September
Grace, MS

Average pressure in September - Grace, 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).

Average wind speed in September
Grace, MS

Average wind speed in September - Grace, MS
  • Average wind speed in September: 5.6mph

The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in September
Grace, MS

Average humidity in September - Grace, MS
  • Average humidity in September: 71%

The months with the highest relative humidity are February, March and December (79%).
The month with the lowest relative humidity is October (67%).

Average rainfall in September
Grace, MS

Average rainfall in September - Grace, MS
  • Average rainfall in September: 2.28"

The wettest month (with the highest rainfall) is April (4.45").
The driest month (with the least rainfall) is November (2.24").

Average rainfall days in September
Grace, MS

Average rainfall days in September - Grace, MS
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is October (9.2 days).

Average snowfall in September
Grace, MS

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

The month with the highest snowfall is February (0.24").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").

Average snowfall days in September
Grace, MS

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

The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in September: 10h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in September
Grace, MS

Average sunshine days in September - Grace, MS
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is July (10.7 days).

Average UV index in September
Grace, MS

Average UV index in September - Grace, 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
Grace, MS

Average cloud cover in September - Grace, MS
  • Average cloud cover in September: 27

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 26).

Average visibility in September
Grace, MS

Average visibility in September - Grace, MS
  • Average visibility in September: 6mi

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

Grace, Mississippi, USA

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