September weather forecast
Fredericksburg, TX

Fredericksburg's weather in September ushers in the fall season after three intense summer months. The climate gradually begins to cool down, with increased rainfall and humidity levels similar to late spring. Sunlight hours and visibility go through a discernable decline as overcast days slowly start to outnumber clear-skied days. The temperature steadily moves between 67.6°F (19.8°C) and 86.2°F (30.1°C), marking a significant drop compared to August. Alongside lowering temperatures, the city witnesses shorter daylight periods during the day, and this decline continues into the following months.

Temperature

A modest decline in the average high-temperature is seen in Fredericksburg, Texas, during September, decreasing from a hot 93.6°F (34.2°C) in August to a still tropical 86.2°F (30.1°C). During the month of September, Fredericksburg experiences a steady low-temperature average of 67.6°F (19.8°C).

Heat index

For most parts of September, the heat index is computed to be a sweltering 95°F (35°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Fredericksburg, Texas, the average relative humidity in September is 67%.

Rainfall

In Fredericksburg, in September, it is raining for 14.8 days, with typically 1.81" (46mm) of accumulated precipitation. Throughout the year, there are 129.3 rainfall days, and 15.87" (403mm) of precipitation is accumulated.

Snowfall

In Fredericksburg, snow does not fall in April through October.

Daylight

In Fredericksburg, the average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 7:12 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 7:21 pm CDT.

Sunshine

The average sunshine in September in Fredericksburg is 8.5h.

UV index

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In September, an average UV index of 6 transforms into the following instructions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.