Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Start of September brings a shift in the average high-temperature, falling from August's torrid 96.6°F (35.9°C) to a tropical 87.3°F (30.7°C). Jolly records a mean low-temperature of 68.2°F (20.1°C) in September.Heat index
In September, the average heat index is appraised at a hot 93.2°F (34°C). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.Research indicates the heat index considers values in shaded locales and with light winds. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
In September, the average relative humidity in Jolly is 61%.Rainfall
In Jolly, Texas, in September, it is raining for 11.7 days, with typically 2.01" (51mm) of accumulated precipitation. In Jolly, during the entire year, the rain falls for 110.7 days and collects up to 21.22" (539mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In Jolly, the average length of the day in September is 12h and 22min.On the first day of the month, sunrise is at 7:07 am and sunset at 7:58 pm. On the last day of September, in Jolly, sunrise is at 7:27 am and sunset at 7:18 pm CDT.
Sunshine
In Jolly, the average sunshine in September is 8.5h.UV index
In Jolly, Texas, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 6 during September translates into these guidelines:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Jolly in September?
What is the average humidity in September in Jolly?
How much does it rain in Jolly in September?
When it does not snow in Jolly?
How many hours of daylight does Jolly have in September?
When are sunrise and sunset in September in Jolly?
How many hours of sunshine does Jolly have in September?
What is the UV index reading in September in Jolly?
Average temperature in September
Jolly, TX
- Average high temperature in September: 87.3°F
The warmest month (with the highest average high temperature) is August (96.6°F).
The month with the lowest average high temperature is December (53.6°F).
- Average low temperature in September: 68.2°F
The months with the highest average low temperature are July and August (75.4°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).
Average pressure in September
Jolly, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Jolly, TX
- Average wind speed in September: 7.9mph
The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is September (7.9mph).
Average humidity in September
Jolly, TX
- Average humidity in September: 61%
The month with the highest relative humidity is May (70%).
The month with the lowest relative humidity is August (52%).
Average rainfall in September
Jolly, TX
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in September
Jolly, TX
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in September
Jolly, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.87").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Jolly, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Jolly, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in September
Jolly, TX
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is May (15.1 days).
Average UV index in September
Jolly, TX
- Average UV index in September: 6
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Jolly, TX
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 32).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Jolly, TX
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Jolly, Texas, USA
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