September weather forecast
Glenvar Heights, FL

September, the first month of the autumn in Glenvar Heights, is still a tropical month, with an average temperature ranging between min 79.7°F (26.5°C) and max 87.6°F (30.9°C).

Temperature

The advent of September observes an average high-temperature of a still hot 87.6°F (30.9°C), nearly identical to August's 89.2°F (31.8°C). Glenvar Heights, during September nights, witnesses an average temperature marginally cooler than its daytime highs, at a moderately hot 79.7°F (26.5°C).

Heat index

During September, the heat index is evaluated at a torrid 100.4°F (38°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Note that heat index values are valued for light wind and location in the shade. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. 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. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.

Humidity

In Glenvar Heights, the average relative humidity in September is 72%.

Rainfall

In Glenvar Heights, in September, during 13.8 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, there are 110.8 rainfall days, and 8.19" (208mm) of precipitation is accumulated.

Snowfall

September is the only month when snow falls. The month with the most snowfall days in Glenvar Heights is September, when snow falls for 0.1 days.

Daylight

In Glenvar Heights, Florida, the average length of the day in September is 12h and 17min.
On the first day of the month, sunrise is at 7:01 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:13 am and sunset at 7:08 pm EDT.

Sunshine

In Glenvar Heights, the average sunshine in September is 9.2h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Glenvar Heights. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 7 during September leads to these instructions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.