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 August transitions into September, Mount Olympus sees a drop in the average high-temperature, transitioning from a moderately hot 81.3°F (27.4°C) to a pleasant 72.3°F (22.4°C). September nights showcase a dramatic shift from daytime highs to an average temperature of 49.5°F (9.7°C).Humidity
In Mount Olympus, the average relative humidity in September is 44%.Rainfall
In September, the rain falls for 8.7 days. Throughout September, 0.98" (25mm) of precipitation is accumulated. In Mount Olympus, during the entire year, the rain falls for 120.5 days and collects up to 18.66" (474mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 27min.On the first day of September, sunrise is at 6:55 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 7:10 pm MDT.
Sunshine
In Mount Olympus, the average sunshine in September is 10h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Mount Olympus have in September?
What is the UV index intensity in September?
Average temperature in September
Mount Olympus, UT
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in September
Mount Olympus, 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
Mount Olympus, UT
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is March (6.1mph).
The calmest month (with the lowest average wind speed) is January (4.7mph).
Average humidity in September
Mount Olympus, 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
Mount Olympus, UT
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is February (2.4").
The driest month (with the least rainfall) is June (0.67").
Average rainfall days in September
Mount Olympus, UT
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is April (13.9 days).
The month with the least rainy days is June (6.9 days).
Average snowfall in September
Mount Olympus, UT
- Average snowfall in September: 0"
The month with the highest snowfall is January (14.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mount Olympus, UT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mount Olympus, 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 30min).
Average sunshine days in September
Mount Olympus, UT
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is June (20.8 days).
The month with the least sunshine days is February (10.5 days).
Average UV index in September
Mount Olympus, 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
Mount Olympus, UT
- Average cloud cover in September: 12
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Mount Olympus, 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).
Mount Olympus, Utah, USA
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