September weather forecast
Mount Olympus, UT

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Weather in September

The first month of the autumn, September, is also an agreeable month in Mount Olympus, Utah, with an average temperature ranging between max 72.3°F (22.4°C) and min 49.5°F (9.7°C).

Temperature

The beginning of September involves a decrease in the average high-temperature, transitioning from a warm 81.3°F (27.4°C) in August to a pleasant 72.3°F (22.4°C). Despite the drastic temperature difference, Mount Olympus records an average nighttime low of 49.5°F (9.7°C) throughout September.

Humidity

In September, the average relative humidity is 44%.

Rainfall

In September, in Mount Olympus, the rain falls for 8.7 days. Throughout September, 0.98" (25mm) of precipitation is accumulated. Throughout the year, there are 120.5 rainfall days, and 18.66" (474mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In September, the average length of the day is 12h and 27min.
On the first day of September in Mount Olympus, 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 September, the average sunshine in Mount Olympus, Utah, is 10h.

UV index

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 4 in September translates into these instructions:
Put precautions into practice - Protective measures against sun-induced damage are advised. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
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Frequently asked questions

What is the usual temperature for Mount Olympus in September?

The average high-temperature and low-temperature during September are 72.3°F (22.4°C) and 49.5°F (9.7°C) respectively.

What is the average humidity in September in Mount Olympus?

The average relative humidity in September in Mount Olympus is 44%.

How many days does it rain in September in Mount Olympus?

In Mount Olympus, Utah, during September, the rain falls for 8.7 days and regularly aggregates up to 0.98" (25mm) of precipitation.

When it does not snow in Mount Olympus?

In Mount Olympus, Utah, snow does not fall in June through September.

Does it snow in Mount Olympus in September?

In Mount Olympus, in September, it doesn't snow. In October, it regularly snows.

How many hours of daylight does Mount Olympus have in September?

The average day length in September in Mount Olympus is 12h and 27min.

What time are sunrise and sunset in September in Mount Olympus?

In September, on the first day of the month, sunrise is at 6:55 am and sunset at 7:58 pm. On the last day of the month, in Mount Olympus, Utah, sunrise is at 7:23 am and sunset at 7:10 pm MDT.

How long on average sun shines in September in Mount Olympus?

In September, the average sunshine duration in Mount Olympus is 10h.

How high is the UV index in September in Mount Olympus?

The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Mount Olympus, UT

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).

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Average pressure in September
Mount Olympus, UT

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).

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Average wind speed in September
Mount Olympus, UT

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).

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Average humidity in September
Mount Olympus, UT

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%).

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Average rainfall in September
Mount Olympus, UT

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").

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Average rainfall days in September
Mount Olympus, UT

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).

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Average snowfall in September
Mount Olympus, UT

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").

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Average snowfall days in September
Mount Olympus, UT

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).

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Average daylight in September /
Average sunshine in September
Mount Olympus, UT

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).

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Average sunshine days in September
Mount Olympus, UT

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).

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Average UV index in September
Mount Olympus, UT

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).

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Average cloud cover in September
Mount Olympus, UT

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).

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Average visibility in September
Mount Olympus, UT

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).

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Mount Olympus, Utah, USA

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