To the extent possible, limit exposure to the direct sun during these hours. The Sun's UV radiation is most powerful between 10 a.m. Note: The average daily UV index of 6 in September transform into the following instructions: A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals. UV indexThe average daily maximum UV index in September in Jasper is 6. SunshineIn September, the average sunshine in Jasper is 8.8h. On the last day of the month, sunrise is at 7:08 am and sunset at 7:02 pm CDT. On the first day of September, sunrise is at 6:52 am and sunset at 7:39 pm. DaylightThe average length of the day in September is 12h and 20min. In Jasper, during the entire year, snow falls for 1 days and aggregates up to 0.79' (20mm) of snow. Throughout September, in the average 0.1 snowfall days, it receives 0.04' (1mm) of snow. September is the first month it typically snows. SnowfallMonths with snowfall in Jasper, Texas, are January through March, September and December. In Jasper, during the entire year, the rain falls for 169.9 days and collects up to 35.83' (910mm) of precipitation.

Rainfall In Jasper, in September, it is raining for 15.7 days, with typically 3.07' (78mm) of accumulated precipitation.

HumidityIn September, the average relative humidity is 75%. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When the relative humidity is high, the evaporation rate is reduced. To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities. Children are often less aware of the need to rest and re-hydrate. Heat index values are particularly important for children. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Additional factors like clothing, differences in body mass, height, and shape, wind, and activity influence one's weather impression. Note: The heat index, also known as 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees. Note that heat index values are valued for light wind and location in the shade. Sustained activity may result in heatstroke. Take extra precautions, as heat cramps and heat exhaustion are possible. Heat indexThe average heat index in September is estimated at an extremely hot 105.8☏ (41☌). In September, the average low-temperature is 68.7☏ (20.4☌). TemperatureIn Jasper, the average high-temperature in September marginally drops from 94.6☏ (34.8☌) in August to a still tropical 88.9☏ (31.6☌). The first month of the autumn, September, is still a tropical month in Jasper, Texas, with an average temperature fluctuating between 68.7☏ (20.4☌) and 88.9☏ (31.6☌).

Jasper weather in september