September weather forecast and climate
Lake Butler, FL

Weather in September

The first month of the autumn, September, is still a tropical month in Lake Butler, Florida, with average temperature ranging between max 87.8°F (31°C) and min 71.6°F (22°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a still hot 87.8°F (31°C). The average low-temperature, in September, is 71.6°F (22°C).

Heat index

The average heat index in September is calculated to a blistering 104.4°F (40.2°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, clothing, pregnancy), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

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

Rainfall

In Lake Butler, during September, the rain falls for 13.9 days and regularly aggregates up to 0.59" (15mm) of precipitation. In Lake Butler, during the entire year, the rain falls for 125 days and collects up to 10.24" (260mm) of precipitation.

Snowfall

In Lake Butler snow does not fall in January, March through December.

Daylight

The average length of the day in Lake Butler, Florida, is 12.3h.

Sunshine

In September, the average sunshine is 8.4h.

UV index

The average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Lake Butler?

The average high-temperature, in September, in Lake Butler, is 87.8°F (31°C), while the average low-temperature is 71.6°F (22°C). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), that calculates temperature value influenced by the moisture in the air, is evaluated at 104.4°F (40.2°C).

What is the most humid month in Lake Butler?

August and September, with an average relative humidity of 78%, are most humid months in Lake Butler, Florida.

What is the average humidity in September in Lake Butler?

The average relative humidity in September in Lake Butler, Florida, is 78%.

How much does it rain in Lake Butler in September?

In Lake Butler, in September, it is raining for 13.9 days, with typically 0.59" (15mm) of accumulated precipitation.

When it does not snow in Lake Butler?

January, March through December are months without snowfall in Lake Butler, Florida.

How many hours of daylight does Lake Butler have in September?

The average length of the day in September in Lake Butler is 12.3h.

How long on average sun shines in September in Lake Butler?

In September, the average sunshine in Lake Butler is 8.4h.

What is the UV index reading in September in Lake Butler?

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 the Sun's UV rays.

Average temperature in September
Lake Butler, FL

Average temperature in September - Lake Butler, FL
  • Average high temperature in September: 87.8°F

The warmest months (with the highest average high temperature) are July and August (90.9°F).
The month with the lowest average high temperature is January (63.3°F).

  • Average low temperature in September: 71.6°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (45.5°F).

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Average pressure in September
Lake Butler, FL

Average pressure in September - Lake Butler, FL
  • Average pressure in September: 29.98"

The month with the highest atmospheric pressure is January (30.15").
Months with the lowest atmospheric pressure are June, August and September (29.98").

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Average wind speed in September
Lake Butler, FL

Average wind speed in September - Lake Butler, FL
  • Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).

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Average humidity in September
Lake Butler, FL

Average humidity in September - Lake Butler, FL
  • Average humidity in September: 78%

Months with the highest relative humidity are August and September (78%).
The month with the lowest relative humidity is March (70%).

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Average rainfall in September
Lake Butler, FL

Average rainfall in September - Lake Butler, FL
  • Average rainfall in September: 0.59"

The wettest month (with the highest rainfall) is August (1.65").
The driest month (with the least rainfall) is March (0.39").

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Average rainfall days in September
Lake Butler, FL

Average rainfall days in September - Lake Butler, FL
  • Average rainfall days in September: 13.9 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is November (5 days).

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Average snowfall days in September
Lake Butler, FL

Average snowfall days in September - Lake Butler, FL
  • Average snowfall days in September: 0 days

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

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Average daylight in September /
Average sunshine in September
Lake Butler, FL

Average daylight in September / Average sunshine in September - Lake Butler, FL
  • Average daylight in September: 12.3h

The month with the longest days is June (Average daylight: 14.1h).
The month with the shortest days is December (Average daylight: 10.2h).

  • Average sunshine in September: 8.4h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days in September
Lake Butler, FL

Average sunshine days in September - Lake Butler, FL
  • Average sunshine days in September: 13.8 days

The month with the most sunshine days is November (23.8 days).
Months with the least sunshine days are June, July and August (9.9 days).

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Average UV index in September
Lake Butler, FL

Average UV index in September - Lake Butler, FL
  • Average UV index in September: 6

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 3).

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Average cloud cover in September
Lake Butler, FL

Average cloud cover in September - Lake Butler, FL
  • Average cloud cover in September: 35

The month with the most cloud cover is December (Cloud cover 41).
The month with the least cloud cover is May (Cloud cover 31).

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Average visibility in September
Lake Butler, FL

Average visibility in September - Lake Butler, FL
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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