September weather forecast
Calera, OK

Share

Weather in September

The first month of the autumn, September, is still a warm month in Calera, Oklahoma, with an average temperature varying between 85.8°F (29.9°C) and 66.7°F (19.3°C).

Temperature

The transition into September involves a small decrease in the average high-temperature, dipping slightly from a hot 94.3°F (34.6°C) in August to a moderately hot 85.8°F (29.9°C). Throughout the month of September, the average temperature dips to a comfortable 66.7°F (19.3°C) at night.

Heat index

The heat index for September is evaluated at a tropical 93.2°F (34°C). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', blends air temperature and moisture content to represent the felt temperature to humans. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Calera, the average relative humidity in September is 67%.

Rainfall

In Calera, in September, it is raining for 12.8 days, with typically 2.99" (76mm) of accumulated precipitation. Throughout the year, there are 139 rainfall days, and 32.32" (821mm) of precipitation is accumulated.

Snowfall

In Calera, snow does not fall in April through October.

Daylight

In September, the average length of the day is 12h and 22min.
On the first day of the month, sunrise is at 6:59 am and sunset at 7:51 pm. On the last day of September, sunrise is at 7:19 am and sunset at 7:10 pm CDT.

Sunshine

The average sunshine in September is 8.6h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: In September, a daily UV index of 5 turns into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in September?

The high-temperature, in September, in Calera, is 85.8°F (29.9°C), while the low-temperature averages to 66.7°F (19.3°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 93.2°F (34°C).

What is the average humidity in September?

In Calera, the average relative humidity in September is 67%.

How many days does it rain in September?

In September, the rain falls for 12.8 days. Throughout September, 2.99" (76mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Calera have in September?

In September, the average day length is 12h and 22min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:59 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 7:10 pm CDT.

How long on average sun shines in September in Calera?

In Calera, the average sunshine duration in September is 8.6h.

How high is the UV index in September?

In Calera, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health threat 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
Calera, OK

Average temperature in September - Calera, OK
  • Average high temperature in September: 85.8°F

The warmest month (with the highest average high temperature) is August (94.3°F).
The month with the lowest average high temperature is January (51.4°F).

  • Average low temperature in September: 66.7°F

The month with the highest average low temperature is July (73.9°F).
The coldest month (with the lowest average low temperature) is January (36°F).

Average pressure in September
Calera, OK

Average pressure in September - Calera, 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 (29.9"Hg).

Average wind speed in September
Calera, OK

Average wind speed in September - Calera, OK
  • Average wind speed in September: 7mph

The windiest month (with the highest average wind speed) is March (10.2mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).

Average humidity in September
Calera, OK

Average humidity in September - Calera, OK
  • Average humidity in September: 67%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is August (61%).

Average rainfall in September
Calera, OK

Average rainfall in September - Calera, OK
  • Average rainfall in September: 2.99"

The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is January (1.81").

Average rainfall days in September
Calera, OK

Average rainfall days in September - Calera, OK
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (7.3 days).

Average snowfall in September
Calera, OK

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

The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Calera, OK

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

The month with the highest number of snowfall days is February (1.5 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Calera, OK

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

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is August (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in September
Calera, OK

Average sunshine days in September - Calera, OK
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is March (14.6 days).

Average UV index in September
Calera, OK

Average UV index in September - Calera, 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
Calera, OK

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

The months with the most cloud cover are February and March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 21).

Average visibility in September
Calera, OK

Average visibility in September - Calera, 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).

Calera, Oklahoma, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location