September weather forecastMonarch, FL

September

Weather in September

The first month of the autumn, September, is also a hot month in Monarch, Florida, with an average temperature ranging between max 88.2°F (31.2°C) and min 72.7°F (22.6°C).

Temperature

Monarch marks the arrival of September with an average high-temperature of a still hot 88.2°F (31.2°C), hardly different from August's 90.1°F (32.3°C). Monarch records a mean low-temperature of 72.7°F (22.6°C) in September.

Heat index

For September, the heat index is computed to be a blistering 105.8°F (41°C). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. 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 extremely significant for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The months with the highest humidity are July through September, with an average relative humidity of 79%.

Rainfall

In Monarch, in September, during 13.6 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, there are 130.4 rainfall days, and 11.26" (286mm) of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 19min.
On the first day of September, sunrise is at 7:06 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:14 pm EDT.

Sunshine

The average sunshine in September is 8.8h.

UV index

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

An average high-temperature, in September, in Monarch, is 88.2°F (31.2°C) and the average low-temperature is 72.7°F (22.6°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is computed to be 105.8°F (41°C).

July through September, with an average relative humidity of 79%, are most humid months.

In Monarch, the average relative humidity in September is 79%.

In Monarch, during September, the rain falls for 13.6 days and regularly aggregates up to 0.71" (18mm) of precipitation.

In Monarch, the average day length in September is 12h and 19min.

In September, on the first day of the month, sunrise is at 7:06 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:14 pm EDT.

The average sunshine duration in September is 8.8h.

In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

90.1°F

88.2°F

82.6°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.3mph

6.5mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

8.8

12.8

20.1

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Monarch, FL

Average high temperature in September: 88.2°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 (67.1°F).

Average low temperature in September: 72.7°F

The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (48.9°F).

Average pressure in September
Monarch, FL

Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).

Average wind speed in September
Monarch, FL

Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).

Average humidity in September
Monarch, FL

Average humidity in September: 79%

The months with the highest relative humidity are July, August and September (79%).
The month with the lowest relative humidity is March (71%).

Average rainfall in September
Monarch, FL

Average rainfall in September: 0.71"

The wettest month (with the highest rainfall) is July (2.2").
The driest month (with the least rainfall) is March (0.28").

Average rainfall days in September
Monarch, FL

Average rainfall days in September: 13.6 days

The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is November (6 days).

Average daylight in September /
Average sunshine in September
Monarch, FL

Average daylight in September: 12h and 18min

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

Average sunshine in September: 8h and 48min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).

Average sunshine days in September
Monarch, FL

Average sunshine days in September: 12.8 days

The month with the most sunshine days is January (23.6 days).
The month with the least sunshine days is July (7.5 days).

Average UV index in September
Monarch, FL

Average UV index in September: 6

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

Average cloud cover in September
Monarch, FL

Average cloud cover in September: 33

The months with the most cloud cover are February and December (Cloud cover 37).
The months with the least cloud cover are May and October (Cloud cover 29).

Average visibility in September
Monarch, 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).