September weather forecast
Alachua, FL

The first month of the autumn, September, is also a hot month in Alachua, Florida, with temperature in the range of an average low of 72°F (22.2°C) and an average high of 87.3°F (30.7°C).

Temperature

Alachua, Florida, registers an average high-temperature of a still hot 87.3°F (30.7°C) with the arrival of September, showing minor deviation from the preceding month. An average low-temperature of 72°F (22.2°C) is recorded in the month of September in Alachua, Florida.

Heat index

For September, the heat index is computed to be a fiery hot 102.2°F (39°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

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

Rainfall

In Alachua, during September, the rain falls for 22.5 days and regularly aggregates up to 3.23" (82mm) of precipitation. Throughout the year, there are 196.8 rainfall days, and 35.71" (907mm) of precipitation is accumulated.

Daylight

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

Sunshine

In September, the average sunshine is 8.5h.

UV index

In Alachua, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, the maximum UV index of 6 suggests this advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. 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. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.