September weather forecastNewcastle, OK
September
Weather in September
September, the first month of the autumn in Newcastle, is still a warm month, with an average temperature varying between 65.7°F (18.7°C) and 84.6°F (29.2°C).Temperature
The arrival of September correlates with a minor temperature reduction, down from August's tropical 93.2°F (34°C) to a moderately hot 84.6°F (29.2°C). Newcastle observes an average nighttime low-temperature of 65.7°F (18.7°C) during the month of September.Heat index
In September, the heat index is calculated to be a tropical 89.6°F (32°C). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
In September, the average relative humidity is 65%.Rainfall
In Newcastle, during September, the rain falls for 12.5 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Newcastle, during the entire year, the rain falls for 119.9 days and collects up to 24.09" (612mm) of precipitation.Snowfall
In Newcastle, Oklahoma, snow does not fall in April through October.Daylight
In Newcastle, Oklahoma, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 7:03 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:25 am and sunset at 7:15 pm CDT.
Sunshine
In Newcastle, the average sunshine in September is 8.6h.UV index
In Newcastle, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Newcastle, OK
- Average high temperature in September: 84.6°F
The warmest month (with the highest average high temperature) is July (93.6°F).
The month with the lowest average high temperature is January (49.1°F).
- Average low temperature in September: 65.7°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (32°F).
Average pressure in September
Newcastle, OK
- Average pressure in September: 29.97"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, OK
- Average wind speed in September: 8.7mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in September
Newcastle, OK
- Average humidity in September: 65%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (59%).
Average rainfall in September
Newcastle, OK
- Average rainfall in September: 2.6"
The wettest month (with the highest rainfall) is May (3.82").
The driest months (with the least rainfall) are February and December (0.98").
Average rainfall days in September
Newcastle, OK
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in September
Newcastle, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.1").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Newcastle, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.8 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, OK
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 36min
The months with the most sunshine are July and August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in September
Newcastle, OK
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is May (13.7 days).
Average UV index in September
Newcastle, OK
- Average UV index in September: 5
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 2).
Average cloud cover in September
Newcastle, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in September
Newcastle, OK
- 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).
