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
As September commences, the average high-temperature subtly reduces, transitioning from a hot 89.8°F (32.1°C) in August to a moderately hot 83.1°F (28.4°C). Wiley's nighttime temperature in September drops to an average of 61.7°F (16.5°C).Heat index
The average heat index in September is estimated at 82.4°F (28°C). With extended exposure and activity, one might feel exhausted and experience heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Humidity
In Wiley, the average relative humidity in September is 45%.Rainfall
In Wiley, in September, during 6.5 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, there are 79.5 rainfall days, and 8.9" (226mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Wiley, Colorado.Daylight
The average length of the day in September in Wiley is 12h and 25min.On the first day of the month, sunrise is at 6:21 am and sunset at 7:20 pm. On the last day of September, in Wiley, Colorado, sunrise is at 6:46 am and sunset at 6:34 pm MDT.
Sunshine
In September, the average sunshine is 10.4h.UV index
In September, the average daily maximum UV index in Wiley is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 5 during September translates into the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Wiley in September?
What is the average humidity in September in Wiley?
How many days does it rain in September in Wiley?
When it does not snow in Wiley?
Does it snow in Wiley in September?
What is the average length of the day in September in Wiley?
When are sunrise and sunset in September in Wiley?
How long on average sun shines in September in Wiley?
How high is the UV index in September in Wiley?
Average temperature in September
Wiley, CO
- Average high temperature in September: 83.1°F
The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in September: 61.7°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is December (26.4°F).
Average pressure in September
Wiley, CO
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).
Average wind speed in September
Wiley, CO
- Average wind speed in September: 10.9mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is January (8.9mph).
Average humidity in September
Wiley, CO
- Average humidity in September: 45%
The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (40%).
Average rainfall in September
Wiley, CO
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is July (1.54").
The driest month (with the least rainfall) is November (0.28").
Average rainfall days in September
Wiley, CO
- Average rainfall days in September: 6.5 days
The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is November (2.5 days).
Average snowfall in September
Wiley, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Wiley, CO
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Wiley, CO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 10h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in September
Wiley, CO
- Average sunshine days in September: 21.8 days
The month with the most sunshine days is November (25.2 days).
The month with the least sunshine days is July (17.3 days).
Average UV index in September
Wiley, CO
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Wiley, CO
- Average cloud cover in September: 14
The months with the most cloud cover are February and April (Cloud cover 25).
The months with the least cloud cover are June and September (Cloud cover 14).
Average visibility in September
Wiley, CO
- 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).
Wiley, Colorado, USA
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