September weather forecast
Gilbert, SC

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Weather in September

The first month of the autumn, September, is still a warm month in Gilbert, South Carolina, with temperature in the range of an average high of 84.4°F (29.1°C) and an average low of 66.4°F (19.1°C).

Temperature

Gilbert's weather in September displays an average high-temperature of a warm 84.4°F (29.1°C), showing minor disparity from August's 89.4°F (31.9°C). An average temperature of 66.4°F (19.1°C) is recorded during the nights in September.

Heat index

September's heat index is calculated to be a hot 91.4°F (33°C). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an estimation of the warmth sensation when considering humidity levels. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.

Humidity

In Gilbert, South Carolina, the average relative humidity in September is 72%.

Rainfall

September is the month with the least rainfall. Rain falls for 12.8 days and accumulates 1.77" (45mm) of precipitation.

Snowfall

In Gilbert, South Carolina, snow does not fall in April through November.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of the month, sunrise is at 6:59 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:19 am and sunset at 7:10 pm EDT.

Sunshine

The average sunshine in September is 8.4h.

UV index

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, a regular UV index of 6 translates into these guidelines:
Deflect overexposure. Sun protection is a necessity. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

How hot does it get in Gilbert in September?

During September, Gilbert experiences an average high-temperature of 84.4°F (29.1°C) and a low-temperature of 66.4°F (19.1°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, is calculated to be 91.4°F (33°C).

What is the average humidity in September in Gilbert?

In September, the average relative humidity in Gilbert, South Carolina, is 72%.

What is the driest month in Gilbert?

September is the month with the least rainfall in Gilbert. Rain falls for 12.8 days and accumulates 1.77" (45mm) of precipitation.

How many days does it rain in September in Gilbert?

In September, in Gilbert, the rain falls for 12.8 days. Throughout September, 1.77" (45mm) of precipitation is accumulated.

When it does not snow in Gilbert?

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

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

In Gilbert, South Carolina, the average day length in September is 12h and 22min.

What time are sunrise and sunset in September in Gilbert?

In September, on the first day of the month, sunrise is at 6:59 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:10 pm EDT.

How many hours of sunshine does Gilbert have in September?

In September, the average sunshine duration in Gilbert is 8.4h.

How high is the UV index in September in Gilbert?

The average daily maximum UV index in September in Gilbert is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
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
Gilbert, SC

Average temperature in September - Gilbert, SC
  • Average high temperature in September: 84.4°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (52.3°F).

  • Average low temperature in September: 66.4°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).

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Average pressure in September
Gilbert, SC

Average pressure in September - Gilbert, SC
  • Average pressure in September: 30.02"Hg

The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed in September
Gilbert, SC

Average wind speed in September - Gilbert, SC
  • Average wind speed in September: 6mph

The windiest months (with the highest average wind speed) are February and April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in September
Gilbert, SC

Average humidity in September - Gilbert, SC
  • Average humidity in September: 72%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (70%).

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Average rainfall in September
Gilbert, SC

Average rainfall in September - Gilbert, SC
  • Average rainfall in September: 1.77"

The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in September
Gilbert, SC

Average rainfall days in September - Gilbert, SC
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is October (8.9 days).

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Average snowfall in September
Gilbert, SC

Average snowfall in September - Gilbert, SC
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in September
Gilbert, SC

Average snowfall days in September - Gilbert, SC
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.8 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
Gilbert, SC

Average daylight in September / Average sunshine in September - Gilbert, SC
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 8h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

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Average sunshine days in September
Gilbert, SC

Average sunshine days in September - Gilbert, SC
  • Average sunshine days in September: 15.8 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (10 days).

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Average UV index in September
Gilbert, SC

Average UV index in September - Gilbert, SC
  • Average UV index in September: 6

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).

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Average cloud cover in September
Gilbert, SC

Average cloud cover in September - Gilbert, SC
  • Average cloud cover in September: 32

The months with the most cloud cover are February and December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 28).

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Average visibility in September
Gilbert, SC

Average visibility in September - Gilbert, SC
  • 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).

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Gilbert, South Carolina, USA

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