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
Manchester's September weather shows a modest shift in high-temperatures, falling from August's hot 91.9°F (33.3°C) to a warm 83.7°F (28.7°C). September nights experience a consistent temperature drop to an enjoyable 64.9°F (18.3°C).Heat index
For most parts of September, the heat index is evaluated at a hot 87.8°F (31°C). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.Take into consideration that the heat index values are calculated for shade and light wind conditions. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Humidity
In September, the average relative humidity is 62%.Rainfall
In Manchester, in September, it is raining for 9.5 days, with typically 1.02" (26mm) of accumulated precipitation. In Manchester, during the entire year, the rain falls for 90.6 days and collects up to 11.54" (293mm) of precipitation.Snowfall
In Manchester, Oklahoma, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 24min.On the first day of the month, sunrise is at 7:03 am and sunset at 8:00 pm. On the last day of September, sunrise is at 7:27 am and sunset at 7:16 pm CDT.
Sunshine
In Manchester, the average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index 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: In September, the maximum UV index of 6 suggests these recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. 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
Is it hot during September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Manchester, OK
- Average high temperature in September: 83.7°F
The warmest month (with the highest average high temperature) is July (94.3°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 64.9°F
The month with the highest average low temperature is July (74.3°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in September
Manchester, OK
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Manchester, OK
- Average wind speed in September: 9.4mph
The windiest month (with the highest average wind speed) is April (11.8mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in September
Manchester, OK
- Average humidity in September: 62%
The month with the highest relative humidity is May (70%).
The month with the lowest relative humidity is July (56%).
Average rainfall in September
Manchester, OK
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is November (0.2").
Average rainfall days in September
Manchester, OK
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is May (12 days).
The month with the least rainy days is December (3 days).
Average snowfall in September
Manchester, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Manchester, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Manchester, OK
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 12min).
The months with the least sunshine are January and December (Average sunshine: 6h and 18min).
Average sunshine days in September
Manchester, OK
- Average sunshine days in September: 18.2 days
The month with the most sunshine days is December (26.1 days).
The month with the least sunshine days is August (16.7 days).
Average UV index in September
Manchester, OK
- 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, November and December (UV index 2).
Average cloud cover in September
Manchester, OK
- Average cloud cover in September: 24
The months with the most cloud cover are March and April (Cloud cover 35).
The months with the least cloud cover are June and August (Cloud cover 19).
Average visibility in September
Manchester, 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).
Manchester, Oklahoma, USA
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