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
In September, the average high-temperature decreases from a very hot 97°F (36.1°C) in August to a hot 87.4°F (30.8°C). In Olney, September nights cool down to an average of 69.1°F (20.6°C).Heat index
September's heat index is appraised at a hot 93.2°F (34°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.Observations indicate that the heat index values are for shady locations with light wind. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humidity
In September, the average relative humidity in Olney is 60%.Rainfall
In Olney, in September, it is raining for 11.5 days, with typically 2.05" (52mm) of accumulated precipitation. In Olney, Texas, during the entire year, the rain falls for 104 days and collects up to 18.58" (472mm) of precipitation.Snowfall
In Olney, snow does not fall in May through October.Daylight
In Olney, the average length of the day in September is 12h and 22min.On the first day of September in Olney, sunrise is at 7:09 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 7:20 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 reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Olney during September?
What is the average humidity in September in Olney?
How much does it rain in Olney in September?
When it does not snow in Olney?
What is the average length of the day in September in Olney?
When are sunrise and sunset in September in Olney?
How many hours of sunshine does Olney have in September?
How high is the UV index in September in Olney?
Average temperature in September
Olney, TX
- Average high temperature in September: 87.4°F
The warmest month (with the highest average high temperature) is August (97°F).
The month with the lowest average high temperature is December (54.9°F).
- Average low temperature in September: 69.1°F
The months with the highest average low temperature are July and August (75.7°F).
The coldest month (with the lowest average low temperature) is January (37°F).
Average pressure in September
Olney, 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 (29.87"Hg).
Average wind speed in September
Olney, TX
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is September (8.3mph).
Average humidity in September
Olney, TX
- Average humidity in September: 60%
The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is August (49%).
Average rainfall in September
Olney, TX
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is May (2.24").
The driest month (with the least rainfall) is February (0.87").
Average rainfall days in September
Olney, TX
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (11.8 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in September
Olney, TX
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Olney, 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
Olney, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 4min
The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in September
Olney, TX
- Average sunshine days in September: 16.2 days
The month with the most sunshine days is January (25.3 days).
The month with the least sunshine days is September (16.2 days).
Average UV index in September
Olney, 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
Olney, TX
- Average cloud cover in September: 26
The month with the most cloud cover is March (Cloud cover 30).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in September
Olney, 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).
Olney, Texas, USA
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