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
September signifies a gentle decline in Westport's average high-temperature, easing from a hot 90.3°F (32.4°C) in August to a moderately hot 83.3°F (28.5°C). During the month of September, the temperature generally drops to a low average of 63.9°F (17.7°C).Heat index
September's average heat index is computed to be a tropical 89.6°F (32°C). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.Heat index determinations are made taking into account the shade and light air movements. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
In September, the average relative humidity is 70%.Rainfall
In Westport, Oklahoma, in September, during 10 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. In Westport, during the entire year, the rain falls for 108.2 days and collects up to 16.69" (424mm) of precipitation.Snowfall
In Westport, Oklahoma, snow does not fall in April through October.Daylight
In Westport, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 6:57 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:20 am and sunset at 7:09 pm CDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In Westport, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 5 during September translates into these guidelines:
Take precautions - Protection against skin and eye damage is obliged. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
How hot is September in Westport?
What is the average humidity in September in Westport?
How many days does it rain in September in Westport?
When it does not snow in Westport?
What is the average length of the day in September in Westport?
When is the sunrise / sunset in September in Westport?
How long on average sun shines in September in Westport?
What is the UV index reading in September in Westport?
Average temperature in September
Westport, OK
- Average high temperature in September: 83.3°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is January (46.4°F).
- Average low temperature in September: 63.9°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 (31.3°F).
Average pressure in September
Westport, 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 (29.89"Hg).
Average wind speed in September
Westport, OK
- Average wind speed in September: 7.6mph
The windiest months (with the highest average wind speed) are March and April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in September
Westport, OK
- Average humidity in September: 70%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is January (66%).
Average rainfall in September
Westport, OK
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days in September
Westport, OK
- Average rainfall days in September: 10 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is December (4.6 days).
Average snowfall in September
Westport, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Westport, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.5 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
Westport, 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 42min).
- Average sunshine in September: 8h and 4min
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 48min).
Average sunshine days in September
Westport, OK
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is December (24.2 days).
The month with the least sunshine days is May (15.2 days).
Average UV index in September
Westport, 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
Westport, OK
- Average cloud cover in September: 27
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Westport, 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).
Westport, Oklahoma, USA
Weather forecast for your location
2. Allow the app to use your location
