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
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a torrid 95.9°F (35.5°C) in August to a hot 87.8°F (31°C). The average nighttime temperature lowers to an agreeable 70.7°F (21.5°C) throughout September.Heat index
During September, the heat index is calculated to be a fiery hot 96.8°F (36°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.
Humidity
In September, the average relative humidity in Jarrell is 66%.Rainfall
In Jarrell, in September, it is raining for 15.1 days, with typically 2.2" (56mm) of accumulated precipitation. In Jarrell, during the entire year, the rain falls for 139.3 days and collects up to 21.93" (557mm) of precipitation.Snowfall
March through December are months without snowfall in Jarrell.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 7:07 am and sunset at 7:53 pm. On the last day of September, in Jarrell, sunrise is at 7:23 am and sunset at 7:16 pm CDT.
Sunshine
In Jarrell, the average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September in Jarrell, Texas, is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Shun overexposure. Protection from sun ravages is indispensable. 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. Boost your sun resistance with garments that are densely woven yet spacious.
Frequently asked questions
How hot is September in Jarrell?
What is the average humidity in September in Jarrell?
How much does it rain in Jarrell in September?
When it does not snow in Jarrell?
What is the average length of the day in September in Jarrell?
When are sunrise and sunset in September in Jarrell?
How many hours of sunshine does Jarrell have in September?
What is the UV index intensity in September in Jarrell?
Average temperature in September
Jarrell, TX
- Average high temperature in September: 87.8°F
The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (58.5°F).
- Average low temperature in September: 70.7°F
The month with the highest average low temperature is August (75.6°F).
The coldest month (with the lowest average low temperature) is January (41.9°F).
Average pressure in September
Jarrell, 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 (29.91"Hg).
Average wind speed in September
Jarrell, TX
- Average wind speed in September: 6.7mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.7mph).
Average humidity in September
Jarrell, TX
- Average humidity in September: 66%
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (58%).
Average rainfall in September
Jarrell, TX
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is May (3.46").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in September
Jarrell, TX
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in September
Jarrell, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Jarrell, TX
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.5 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Jarrell, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Jarrell, TX
- Average sunshine days in September: 12.4 days
The month with the most sunshine days is January (21.2 days).
The month with the least sunshine days is September (12.4 days).
Average UV index in September
Jarrell, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
Jarrell, TX
- Average cloud cover in September: 31
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Jarrell, 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).
Jarrell, Texas, USA
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