September weather forecast
Summerfield, OK

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Weather in September

September, the first month of the autumn in Summerfield, is still a warm month, with an average temperature fluctuating between 63.3°F (17.4°C) and 85.5°F (29.7°C).

Temperature

The onset of September brings a small shift in high-temperatures, falling from a hot 92.5°F (33.6°C) in August to a warm 85.5°F (29.7°C). Summerfield's temperature exhibits a stark contrast from daytime to nighttime, averaging lows of 63.3°F (17.4°C) in September.

Heat index

The heat index in September is evaluated at a hot 93.2°F (34°C). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light 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 'apparent temperature' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

In Summerfield, the average relative humidity in September is 70%.

Rainfall

In Summerfield, in September, during 11.7 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. In Summerfield, Oklahoma, during the entire year, the rain falls for 146.2 days and collects up to 33.62" (854mm) of precipitation.

Snowfall

In Summerfield, snow does not fall in April through November.

Daylight

In September, the average length of the day is 12h and 23min.
On the first day of the month, sunrise is at 6:52 am and sunset at 7:45 pm. On the last day of September, sunrise is at 7:14 am and sunset at 7:04 pm CDT.

Sunshine

In Summerfield, the average sunshine in September is 9.3h.

UV index

In Summerfield, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.
Note: In September, an average UV index of 6 transforms into the following instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in Summerfield in September?

In September, the average high-temperature and low-temperature are 85.5°F (29.7°C) and 63.3°F (17.4°C) respectively. In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is evaluated at 93.2°F (34°C).

What is the average humidity in September?

In Summerfield, the average relative humidity in September is 70%.

How much does it rain in September?

In September, the rain falls for 11.7 days. Throughout September, 2.52" (64mm) of precipitation is accumulated.

When it does not snow?

In Summerfield, snow does not fall in April through November.

How many hours of daylight does Summerfield have in September?

In Summerfield, the average day length in September is 12h and 23min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:52 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:04 pm CDT.

How long on average sun shines in September in Summerfield?

The average sunshine duration in September in Summerfield is 9.3h.

What is the UV index reading in September?

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Summerfield, OK

Average temperature in September - Summerfield, OK
  • Average high temperature in September: 85.5°F

The warmest month (with the highest average high temperature) is July (93.2°F).
The month with the lowest average high temperature is January (49.1°F).

  • Average low temperature in September: 63.3°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (32.2°F).

Average pressure in September
Summerfield, OK

Average pressure in September - Summerfield, OK
  • Average pressure in September: 30"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in September
Summerfield, OK

Average wind speed in September - Summerfield, OK
  • Average wind speed in September: 5.3mph

The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in September
Summerfield, OK

Average humidity in September - Summerfield, OK
  • Average humidity in September: 70%

The months with the highest relative humidity are February, March and May (76%).
The month with the lowest relative humidity is August (69%).

Average rainfall in September
Summerfield, OK

Average rainfall in September - Summerfield, OK
  • Average rainfall in September: 2.52"

The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is January (1.97").

Average rainfall days in September
Summerfield, OK

Average rainfall days in September - Summerfield, OK
  • Average rainfall days in September: 11.7 days

The month with the highest number of rainy days is August (14.9 days).
The month with the least rainy days is November (9 days).

Average snowfall in September
Summerfield, OK

Average snowfall in September - Summerfield, OK
  • Average snowfall in September: 0"

The month with the highest snowfall is February (1.14").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Summerfield, OK

Average snowfall days in September - Summerfield, OK
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.1 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
Summerfield, OK

Average daylight in September / Average sunshine in September - Summerfield, OK
  • Average daylight in September: 12h and 2min

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 54min).

  • Average sunshine in September: 9h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

Average sunshine days in September
Summerfield, OK

Average sunshine days in September - Summerfield, OK
  • Average sunshine days in September: 16.4 days

The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (13.2 days).

Average UV index in September
Summerfield, OK

Average UV index in September - Summerfield, OK
  • Average UV index in September: 6

The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in September
Summerfield, OK

Average cloud cover in September - Summerfield, OK
  • Average cloud cover in September: 28

The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are June and August (Cloud cover 25).

Average visibility in September
Summerfield, OK

Average visibility in September - Summerfield, 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).

Summerfield, Oklahoma, USA

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