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
Cheyenne's progression into September involves a drop in the average high-temperature, receding from a hot 94.1°F (34.5°C) in August to a warm 84.6°F (29.2°C). During the month of September, an average temperature of 65.5°F (18.6°C) is noted during the nights.Heat index
The heat index value for September is calculated to be a tropical 87.8°F (31°C). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index 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
The average relative humidity in September is 59%.Rainfall
In Cheyenne, in September, it is raining for 11.6 days, with typically 2.05" (52mm) of accumulated precipitation. Throughout the year, in Cheyenne, there are 98.4 rainfall days, and 18.78" (477mm) of precipitation is accumulated.Snowfall
In Cheyenne, snow does not fall in May through September.Daylight
The average length of the day in September in Cheyenne is 12h and 23min.On the first day of the month, sunrise is at 7:11 am and sunset at 8:05 pm. On the last day of September, in Cheyenne, sunrise is at 7:33 am and sunset at 7:23 pm CDT.
Sunshine
The average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 5 during September translates into the following directions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Frequently asked questions
How hot is it in Cheyenne in September?
What is the average humidity in September in Cheyenne?
How many days does it rain in September in Cheyenne?
When it does not snow in Cheyenne?
Does it snow in Cheyenne in September?
How many hours of daylight does Cheyenne have in September?
When is the sunrise / sunset in September in Cheyenne?
How long on average sun shines in September in Cheyenne?
What is the UV index intensity in September in Cheyenne?
Average temperature in September
Cheyenne, OK
- Average high temperature in September: 84.6°F
The warmest month (with the highest average high temperature) is July (94.8°F).
The month with the lowest average high temperature is December (49.3°F).
- Average low temperature in September: 65.5°F
The month with the highest average low temperature is July (73.8°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in September
Cheyenne, OK
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Cheyenne, OK
- Average wind speed in September: 9.9mph
The windiest month (with the highest average wind speed) is April (13.1mph).
The calmest month (with the lowest average wind speed) is August (9.4mph).
Average humidity in September
Cheyenne, OK
- Average humidity in September: 59%
The month with the highest relative humidity is May (62%).
The month with the lowest relative humidity is August (51%).
Average rainfall in September
Cheyenne, OK
- Average rainfall in September: 2.05"
The wettest month (with the highest rainfall) is May (3.11").
The driest months (with the least rainfall) are January and February (0.67").
Average rainfall days in September
Cheyenne, OK
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is May (12.1 days).
The month with the least rainy days is January (2.9 days).
Average snowfall in September
Cheyenne, OK
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Cheyenne, OK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.9 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
Cheyenne, 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 48min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Cheyenne, OK
- Average sunshine days in September: 15.6 days
The month with the most sunshine days is January (26.4 days).
The month with the least sunshine days is August (15.1 days).
Average UV index in September
Cheyenne, 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
Cheyenne, OK
- Average cloud cover in September: 24
The months with the most cloud cover are March and April (Cloud cover 30).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Cheyenne, 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).
Cheyenne, Oklahoma, USA
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