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
The beginning of September involves a decrease in the average high-temperature, transitioning from a torrid 97°F (36.1°C) in August to a hot 87.4°F (30.8°C). An average nighttime temperature of 69.1°F (20.6°C) is observed during September.Heat index
The heat index value during September is estimated at a tropical 93.2°F (34°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Humidity
In September, the average relative humidity is 60%.Rainfall
In September, the rain falls for 11.5 days. Throughout September, 2.05" (52mm) of precipitation is accumulated. Throughout the year, in Newcastle, there are 104 rainfall days, and 18.58" (472mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Newcastle, Texas, the average length of the day in September is 12h and 22min.On the first day of September, 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
In Newcastle, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September in Newcastle is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: In September, the UV index of 6 transforms into the following advice:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Newcastle during September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Newcastle have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Newcastle, 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
Newcastle, 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
Newcastle, 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
Newcastle, 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
Newcastle, 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
Newcastle, 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
Newcastle, 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
Newcastle, 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
Newcastle, 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
Newcastle, 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
Newcastle, 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
Newcastle, 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
Newcastle, 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).
Newcastle, Texas, USA
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