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
A moderate decline in average high-temperatures is noted in September, moving from a tropical 90.9°F (32.7°C) in August to a warm 84.2°F (29°C). Porter witnesses an average low-temperature of 64°F (17.8°C) throughout the month of September.Heat index
In September, the heat index is computed to be a hot 91.4°F (33°C). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.Heat index guidelines indicate values are for light wind scenarios and shaded regions. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', comes about by integrating the temperature readings with the humidity levels. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
Humidity
The average relative humidity in September is 70%.Rainfall
In Porter, during September, the rain falls for 8.1 days and regularly aggregates up to 0.63" (16mm) of precipitation. In Porter, Oklahoma, during the entire year, the rain falls for 92.3 days and collects up to 9.49" (241mm) of precipitation.Snowfall
In Porter, snow does not fall in April through November.Daylight
The average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:16 am and sunset at 7:06 pm CDT.
Sunshine
In Porter, the average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The UV index of 5 during September leads to these advisories:
Be vigilant - Suggestions to stave off sun damage are provided. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow in Porter?
How many hours of daylight does Porter have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Porter have in September?
What is the UV index intensity in September in Porter?
Average temperature in September
Porter, OK
- Average high temperature in September: 84.2°F
The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (46.9°F).
- Average low temperature in September: 64°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Porter, OK
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in September
Porter, OK
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is March (10.6mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in September
Porter, OK
- Average humidity in September: 70%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is August (67%).
Average rainfall in September
Porter, OK
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is May (1.57").
The driest months (with the least rainfall) are February and December (0.47").
Average rainfall days in September
Porter, OK
- Average rainfall days in September: 8.1 days
The month with the highest number of rainy days is May (10.8 days).
The month with the least rainy days is December (4.5 days).
Average snowfall in September
Porter, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.35").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Porter, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.6 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
Porter, OK
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Porter, OK
- Average sunshine days in September: 19.7 days
The month with the most sunshine days is December (24.5 days).
The month with the least sunshine days is May (17.2 days).
Average UV index in September
Porter, OK
- Average UV index in September: 5
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
Porter, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Porter, 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).
Porter, Oklahoma, USA
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