September weather forecast
Alachua, FL

September, the first month of the autumn in Alachua, is still a tropical month, with an average temperature fluctuating between 72°F (22.2°C) and 87.3°F (30.7°C).

Temperature

Alachua observes an average high-temperature of a still tropical 87.3°F (30.7°C) in September, barely different from 90.7°F (32.6°C) in August. An average low-temperature of 72°F (22.2°C) is recorded in the month of September in Alachua.

Heat index

September's mean heat index is computed to be a very hot 102.2°F (39°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

August and September, with an average relative humidity of 78%, are the most humid months in Alachua.

Rainfall

In Alachua, in September, during 22.5 rainfall days, 3.23" (82mm) of precipitation is typically accumulated. Throughout the year, there are 196.8 rainfall days, and 35.71" (907mm) of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 7:07 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:23 am and sunset at 7:16 pm EDT.

Sunshine

The average sunshine in September in Alachua is 8.5h.

UV index

In September, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: In September, the maximum UV index of 6 suggests these recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. 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. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.