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
The shift from August to September involves a decrease in the average high-temperature, from a moderately hot 82.8°F (28.2°C) to an agreeable 73°F (22.8°C). Despite considerable daily temperature swings, a steady low-temperature average of 49.1°F (9.5°C) is noted in Cottonwood Heights throughout September.Humidity
The average relative humidity in September in Cottonwood Heights, Utah, is 44%.Rainfall
In September, in Cottonwood Heights, the rain falls for 9.1 days. Throughout September, 0.94" (24mm) of precipitation is accumulated. In Cottonwood Heights, during the entire year, the rain falls for 118.7 days and collects up to 16.34" (415mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Cottonwood Heights is 12h and 27min.On the first day of the month, sunrise is at 6:55 am and sunset at 7:58 pm. On the last day of September, in Cottonwood Heights, sunrise is at 7:23 am and sunset at 7:10 pm MDT.
Sunshine
The average sunshine in September is 10h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 4 in September translates into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Cottonwood Heights in September?
What is the average humidity in September in Cottonwood Heights?
How many days does it rain in September in Cottonwood Heights?
When it does not snow in Cottonwood Heights?
Does it snow in Cottonwood Heights in September?
How many hours of daylight does Cottonwood Heights have in September?
What time are sunrise and sunset in September in Cottonwood Heights?
How long on average sun shines in September in Cottonwood Heights?
What is the UV index intensity in September in Cottonwood Heights?
Average temperature in September
Cottonwood Heights, UT
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (32.2°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in September
Cottonwood Heights, UT
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in September
Cottonwood Heights, UT
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is March (6.2mph).
The calmest month (with the lowest average wind speed) is January (4.7mph).
Average humidity in September
Cottonwood Heights, UT
- Average humidity in September: 44%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (38%).
Average rainfall in September
Cottonwood Heights, UT
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is February (1.97").
The driest month (with the least rainfall) is June (0.67").
Average rainfall days in September
Cottonwood Heights, UT
- Average rainfall days in September: 9.1 days
The month with the highest number of rainy days is May (13.3 days).
The month with the least rainy days is June (7.3 days).
Average snowfall in September
Cottonwood Heights, UT
- Average snowfall in September: 0"
The month with the highest snowfall is January (11.97").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Cottonwood Heights, UT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Cottonwood Heights, UT
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Cottonwood Heights, UT
- Average sunshine days in September: 17.4 days
The month with the most sunshine days is June (20.1 days).
The month with the least sunshine days is February (10.7 days).
Average UV index in September
Cottonwood Heights, UT
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Cottonwood Heights, UT
- Average cloud cover in September: 12
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Cottonwood Heights, UT
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Cottonwood Heights, Utah, USA
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