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
In Garrison, the average high-temperature in September decreases from a moderately hot 80.8°F (27.1°C) in August to an agreeable 71.6°F (22°C). Throughout September, Garrison witnesses a consistent average low-temperature of 50.5°F (10.3°C).Humidity
In Garrison, Utah, the average relative humidity in September is 33%.Rainfall
In Garrison, during September, the rain falls for 5.5 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, there are 62 rainfall days, and 8.11" (206mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows. Throughout September, in the average 0.4 snowfall days, it receives 0.2" (5mm) of snow. Throughout the year, there are 40.3 snowfall days, and 27.32" (694mm) of snow is accumulated.Daylight
In Garrison, Utah, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 7:05 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:19 pm MDT.
Sunshine
In Garrison, the average sunshine in September is 10.2h.UV index
In Garrison, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 4 during September leads to these advisories:
Undertake protective steps - Preventing sun damage is advised. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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 in Garrison?
How much does it rain in Garrison in September?
When does it start to snow?
What is the average length of the day in September in Garrison?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Garrison, UT
- Average high temperature in September: 71.6°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is December (33.6°F).
- Average low temperature in September: 50.5°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in September
Garrison, UT
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Garrison, UT
- Average wind speed in September: 6.8mph
The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).
Average humidity in September
Garrison, UT
- Average humidity in September: 33%
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (29%).
Average rainfall in September
Garrison, UT
- Average rainfall in September: 0.43"
The wettest months (with the highest rainfall) are March and April (1.14").
The driest month (with the least rainfall) is June (0.35").
Average rainfall days in September
Garrison, UT
- Average rainfall days in September: 5.5 days
The month with the highest number of rainy days is April (7.8 days).
The month with the least rainy days is November (2.3 days).
Average snowfall in September
Garrison, UT
- Average snowfall in September: 0.2"
The month with the highest snowfall is March (6.97").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Garrison, UT
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is December (8.6 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Garrison, UT
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The months with the least sunshine are January and December (Average sunshine: 6h and 24min).
Average sunshine days in September
Garrison, UT
- Average sunshine days in September: 22.4 days
The month with the most sunshine days is November (24.1 days).
The month with the least sunshine days is April (19.2 days).
Average UV index in September
Garrison, UT
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Garrison, UT
- Average cloud cover in September: 11
The month with the most cloud cover is December (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Garrison, UT
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Garrison, Utah, USA
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