September weather forecast
Sunnyside, FL

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Weather in September

The first month of the autumn, September, is still a warm month in Sunnyside, Florida, with temperature in the range of an average low of 75°F (23.9°C) and an average high of 85.1°F (29.5°C).

Temperature

Sunnyside in September witnesses an average high-temperature of a moderately hot 85.1°F (29.5°C), indicating a slight variation from August's 87.6°F (30.9°C). Throughout September, an average nighttime temperature of 75°F (23.9°C) is experienced in Sunnyside, Florida.

Heat index

The average heat index in September is estimated at a torrid 95°F (35°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. 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 Sunnyside is 73%.

Rainfall

In Sunnyside, in September, it is raining for 18.9 days, with typically 3.5" (89mm) of accumulated precipitation. Throughout the year, in Sunnyside, there are 176 rainfall days, and 42.09" (1069mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in September in Sunnyside is 12h and 20min.
On the first day of the month, sunrise is at 6:21 am and sunset at 7:06 pm. On the last day of September, in Sunnyside, sunrise is at 6:37 am and sunset at 6:30 pm CDT.

Sunshine

The average sunshine in September is 9.4h.

UV index

In September, the average daily maximum UV index in Sunnyside is 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 6 during September translates into the following directions:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. 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. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is September in Sunnyside?

The average high-temperature and low-temperature in Sunnyside, Florida, during September are 85.1°F (29.5°C) and 75°F (23.9°C) respectively. The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in September is estimated at 95°F (35°C).

What is the average humidity in September in Sunnyside?

The average relative humidity in September is 73%.

How much does it rain in Sunnyside in September?

In Sunnyside, Florida, in September, during 18.9 rainfall days, 3.5" (89mm) of precipitation is typically accumulated.

When it does not snow in Sunnyside?

February through December are months without snowfall.

How many hours of daylight does Sunnyside have in September?

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

When are sunrise and sunset in September in Sunnyside?

On the first day of September, sunrise is at 6:21 am and sunset at 7:06 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 6:30 pm CDT.

How long on average sun shines in September in Sunnyside?

In Sunnyside, the average sunshine duration in September is 9.4h.

How high is the UV index in September in Sunnyside?

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

Average temperature in September - Sunnyside, FL
  • Average high temperature in September: 85.1°F

The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is January (59.9°F).

  • Average low temperature in September: 75°F

The month with the highest average low temperature is August (79.9°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).

Average pressure in September
Sunnyside, FL

Average pressure in September - Sunnyside, 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, August and September (29.98"Hg).

Average wind speed in September
Sunnyside, FL

Average wind speed in September - Sunnyside, FL
  • Average wind speed in September: 7.3mph

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest months (with the lowest average wind speed) are August and September (7.3mph).

Average humidity in September
Sunnyside, FL

Average humidity in September - Sunnyside, FL
  • Average humidity in September: 73%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (70%).

Average rainfall in September
Sunnyside, FL

Average rainfall in September - Sunnyside, FL
  • Average rainfall in September: 3.5"

The wettest month (with the highest rainfall) is August (6.61").
The driest month (with the least rainfall) is November (1.97").

Average rainfall days in September
Sunnyside, FL

Average rainfall days in September - Sunnyside, FL
  • Average rainfall days in September: 18.9 days

The month with the highest number of rainy days is August (25.4 days).
The month with the least rainy days is November (8.6 days).

Average snowfall in September
Sunnyside, FL

Average snowfall in September - Sunnyside, 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
Sunnyside, FL

Average snowfall days in September - Sunnyside, 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
Sunnyside, FL

Average daylight in September / Average sunshine in September - Sunnyside, 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 2min

The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

Average sunshine days in September
Sunnyside, FL

Average sunshine days in September - Sunnyside, FL
  • Average sunshine days in September: 7.6 days

The months with the most sunshine days are October and November (19.5 days).
The month with the least sunshine days is August (4.3 days).

Average UV index in September
Sunnyside, FL

Average UV index in September - Sunnyside, 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 and December (UV index 4).

Average cloud cover in September
Sunnyside, FL

Average cloud cover in September - Sunnyside, FL
  • Average cloud cover in September: 23

The month with the most cloud cover is December (Cloud cover 38).
The months with the least cloud cover are May and October (Cloud cover 22).

Average visibility in September
Sunnyside, FL

Average visibility in September - Sunnyside, 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).

Sunnyside, Florida, USA

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