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
Hillister's September weather shows a modest shift in high-temperatures, falling from August's sweltering 95.5°F (35.3°C) to a hot 89.2°F (31.8°C). Hillister throughout September, experiences an average nighttime temperature of 69.1°F (20.6°C).Heat index
September's mean heat index is computed to be a scorching 107.6°F (42°C). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.In reference to the heat index, it's for places in shade and with a slight wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
In Hillister, the average relative humidity in September is 76%.Rainfall
In Hillister, in September, it is raining for 16.7 days, with typically 3.39" (86mm) of accumulated precipitation. Throughout the year, there are 172.1 rainfall days, and 34.88" (886mm) of precipitation is accumulated.Snowfall
In Hillister, snow does not fall in March through November.Daylight
In Hillister, Texas, the average length of the day in September is 12h and 20min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:40 pm. On the last day of September, sunrise is at 7:10 am and sunset at 7:03 pm CDT.
Sunshine
The average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 6 in September translates into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Hillister in September?
What is the average humidity in September in Hillister?
How much does it rain in Hillister in September?
When it does not snow in Hillister?
What is the average length of the day in September in Hillister?
When is the sunrise / sunset in September in Hillister?
How many hours of sunshine does Hillister have in September?
What is the UV index reading in September in Hillister?
Average temperature in September
Hillister, TX
- Average high temperature in September: 89.2°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (57.9°F).
- Average low temperature in September: 69.1°F
The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (41°F).
Average pressure in September
Hillister, 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 (29.93"Hg).
Average wind speed in September
Hillister, TX
- Average wind speed in September: 4.5mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.4mph).
Average humidity in September
Hillister, TX
- Average humidity in September: 76%
The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are August and October (73%).
Average rainfall in September
Hillister, TX
- Average rainfall in September: 3.39"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is November (2.24").
Average rainfall days in September
Hillister, TX
- Average rainfall days in September: 16.7 days
The month with the highest number of rainy days is August (17.8 days).
The months with the least rainy days are January and November (11.4 days).
Average snowfall in September
Hillister, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.39").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Hillister, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Hillister, 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 4min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Hillister, TX
- Average sunshine days in September: 10.9 days
The month with the most sunshine days is October (18 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in September
Hillister, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Hillister, TX
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 55).
The months with the least cloud cover are August and October (Cloud cover 36).
Average visibility in September
Hillister, TX
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Hillister, Texas, USA
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