September weather forecast
Myrtle Grove, FL

Share

Weather in September

The first month of the autumn, September, is also a hot month in Myrtle Grove, Florida, with an average temperature varying between 73°F (22.8°C) and 87.4°F (30.8°C).

Temperature

August's transformation into September witnesses an average high-temperature of a still hot 87.4°F (30.8°C), noting a minor change from the preceding month. In Myrtle Grove, the average temperature during the nights of September drops to a pleasant 73°F (22.8°C).

Heat index

For September, the heat index is estimated at a sweltering 100.4°F (38°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In September, the average relative humidity in Myrtle Grove, Florida, is 74%.

Rainfall

In Myrtle Grove, in September, during 19.4 rainfall days, 3.54" (90mm) of precipitation is typically accumulated. Throughout the year, there are 182.6 rainfall days, and 39.96" (1015mm) of precipitation is accumulated.

Snowfall

In Myrtle Grove, snow does not fall in February through December.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 6:26 am and sunset at 7:11 pm. On the last day of September, in Myrtle Grove, sunrise is at 6:42 am and sunset at 6:35 pm CDT.

Sunshine

The average sunshine in September in Myrtle Grove is 9.6h.

UV index

In September, the average daily maximum UV index in Myrtle Grove is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: An average UV index of 6 in September transforms into this advice:
Deter overexposure. Protecting against the sun's effects is essential. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Myrtle Grove in September?

The high-temperature, in September, in Myrtle Grove, is 87.4°F (30.8°C), while the low-temperature averages to 73°F (22.8°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is estimated at 100.4°F (38°C).

What is the average humidity in September in Myrtle Grove?

The average relative humidity in September is 74%.

How many days does it rain in September in Myrtle Grove?

In September, in Myrtle Grove, the rain falls for 19.4 days. Throughout September, 3.54" (90mm) of precipitation is accumulated.

When it does not snow in Myrtle Grove?

February through December are months without snowfall.

What is the average length of the day in September in Myrtle Grove?

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

When are sunrise and sunset in September in Myrtle Grove?

On the first day of September in Myrtle Grove, Florida, sunrise is at 6:26 am and sunset at 7:11 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 6:35 pm CDT.

How long on average sun shines in September in Myrtle Grove?

In September, the average sunshine duration in Myrtle Grove is 9.6h.

What is the UV index reading in September in Myrtle Grove?

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
Myrtle Grove, FL

Average temperature in September - Myrtle Grove, FL
  • Average high temperature in September: 87.4°F

The warmest months (with the highest average high temperature) are July and August (90.1°F).
The month with the lowest average high temperature is January (59.4°F).

  • Average low temperature in September: 73°F

The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (46°F).

Average pressure in September
Myrtle Grove, FL

Average pressure in September - Myrtle Grove, FL
  • Average pressure in September: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).

Average wind speed in September
Myrtle Grove, FL

Average wind speed in September - Myrtle Grove, FL
  • Average wind speed in September: 6mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

Average humidity in September
Myrtle Grove, FL

Average humidity in September - Myrtle Grove, FL
  • Average humidity in September: 74%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (70%).

Average rainfall in September
Myrtle Grove, FL

Average rainfall in September - Myrtle Grove, FL
  • Average rainfall in September: 3.54"

The wettest month (with the highest rainfall) is August (5.24").
The driest months (with the least rainfall) are May and November (2.13").

Average rainfall days in September
Myrtle Grove, FL

Average rainfall days in September - Myrtle Grove, FL
  • Average rainfall days in September: 19.4 days

The month with the highest number of rainy days is July (25 days).
The month with the least rainy days is November (8.5 days).

Average snowfall in September
Myrtle Grove, FL

Average snowfall in September - Myrtle Grove, FL
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in September
Myrtle Grove, FL

Average snowfall days in September - Myrtle Grove, FL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Myrtle Grove, FL

Average daylight in September / Average sunshine in September - Myrtle Grove, FL
  • 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 4min

The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).

Average sunshine days in September
Myrtle Grove, FL

Average sunshine days in September - Myrtle Grove, FL
  • Average sunshine days in September: 8.5 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (3.3 days).

Average UV index in September
Myrtle Grove, FL

Average UV index in September - Myrtle Grove, FL
  • Average UV index in September: 6

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).

Average cloud cover in September
Myrtle Grove, FL

Average cloud cover in September - Myrtle Grove, FL
  • Average cloud cover in September: 25

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 23).

Average visibility in September
Myrtle Grove, FL

Average visibility in September - Myrtle Grove, FL
  • 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).

Myrtle Grove, Florida, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location