September weather forecast
Pierson, FL

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Weather in September

September, the first month of the autumn in Pierson, is still a tropical month, with temperature in the range of an average high of 88.5°F (31.4°C) and an average low of 73.8°F (23.2°C).

Temperature

During September, Pierson records an average high-temperature of a still tropical 88.5°F (31.4°C), marking a slight divergence from August's 91.4°F (33°C). In Pierson, September nights witness a steady temperature drop to a moderately hot 73.8°F (23.2°C).

Heat index

September's heat index is evaluated at a blisteringly hot 105.8°F (41°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. 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 highly critical to babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The months with the highest humidity are August and September, with an average relative humidity of 78%.

Rainfall

In Pierson, in September, it is raining for 22.3 days, with typically 4.09" (104mm) of accumulated precipitation. Throughout the year, there are 191.3 rainfall days, and 34.45" (875mm) of precipitation is accumulated.

Snowfall

In Pierson, snow does not fall in February through December.

Daylight

In September, the average length of the day is 12h and 20min.
On the first day of September, sunrise is at 7:03 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:12 pm EDT.

Sunshine

In Pierson, the average sunshine in September is 8.5h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Updated: Jun 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 during September is 88.5°F (31.4°C) and the low-temperature is 73.8°F (23.2°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 105.8°F (41°C).

What are the most humid months?

The months with the highest humidity are August and September, with an average relative humidity of 78%.

What is the average humidity in September?

In September, the average relative humidity is 78%.

How many days does it rain in September?

In Pierson, in September, it is raining for 22.3 days, with typically 4.09" (104mm) of accumulated precipitation.

When it does not snow?

February through December are months without snowfall.

What is the average length of the day in September?

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

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 7:03 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:12 pm EDT.

How many hours of sunshine does Pierson have in September?

The average sunshine duration in September is 8.5h.

How high is the UV index in September?

In Pierson, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Pierson, FL

Average temperature in September - Pierson, FL
  • Average high temperature in September: 88.5°F

The warmest month (with the highest average high temperature) is August (91.4°F).
The month with the lowest average high temperature is January (67.1°F).

  • Average low temperature in September: 73.8°F

The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (49.6°F).

Average pressure in September
Pierson, FL

Average pressure in September - Pierson, 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
Pierson, FL

Average wind speed in September - Pierson, FL
  • Average wind speed in September: 4.7mph

The windiest months (with the highest average wind speed) are March and April (5.8mph).
The calmest month (with the lowest average wind speed) is July (4.2mph).

Average humidity in September
Pierson, FL

Average humidity in September - Pierson, FL
  • Average humidity in September: 78%

The months with the highest relative humidity are August and September (78%).
The month with the lowest relative humidity is March (71%).

Average rainfall in September
Pierson, FL

Average rainfall in September - Pierson, FL
  • Average rainfall in September: 4.09"

The wettest month (with the highest rainfall) is July (5.28").
The driest months (with the least rainfall) are March and November (1.26").

Average rainfall days in September
Pierson, FL

Average rainfall days in September - Pierson, FL
  • Average rainfall days in September: 22.3 days

The month with the highest number of rainy days is August (26.3 days).
The month with the least rainy days is November (9.6 days).

Average snowfall days in September
Pierson, FL

Average snowfall days in September - Pierson, FL
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).

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

Average daylight in September / Average sunshine in September - Pierson, FL
  • Average daylight in September: 12h and 2min

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 3min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

Average sunshine days in September
Pierson, FL

Average sunshine days in September - Pierson, FL
  • Average sunshine days in September: 6.1 days

The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is August (3 days).

Average UV index in September
Pierson, FL

Average UV index in September - Pierson, 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
Pierson, FL

Average cloud cover in September - Pierson, FL
  • Average cloud cover in September: 33

The month with the most cloud cover is February (Cloud cover 39).
The month with the least cloud cover is May (Cloud cover 29).

Average visibility in September
Pierson, FL

Average visibility in September - Pierson, 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).

Pierson, Florida, USA

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