September weather forecastLayton, UT
September
Weather in September
September in Layton, Utah, means the arrival of the fall season, with a significant difference felt from the summers. The temperature averages between 52.7°F (11.5°C) and 72.5°F (22.5°C), a drop from the preceding months, aligning with the transition to autumn. The weather becomes mild and the city begins to be wrapped in hues of autumn yellows and oranges. It is a remarkable time to explore the city's outdoors, with beautiful scenic trails laden with colorful foliage.Temperature
September in Layton brings a slight decrease in temperature, down from a warm 81.1°F (27.3°C) in August to an agreeable 72.5°F (22.5°C). September's nights in Layton observe an average temperature of 52.7°F (11.5°C).Humidity
In September, the average relative humidity is 44%.Rainfall
In September, the rain falls for 7.3 days. Throughout September, 0.91" (23mm) of precipitation is accumulated. In Layton, during the entire year, the rain falls for 98.9 days and collects up to 13.58" (345mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows in Layton. Throughout September, in the average 0.1 snowfall days, it receives 0.31" (8mm) of snow. In Layton, during the entire year, snow falls for 54.4 days and aggregates up to 44.84" (1139mm) of snow.Daylight
In September, the average length of the day is 12h and 27min.On the first day of September, sunrise is at 6:55 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:10 pm MDT.
Sunshine
In Layton, the average sunshine in September is 9.9h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Layton, UT
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in September
Layton, UT
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Layton, UT
- Average wind speed in September: 5.9mph
The windiest months (with the highest average wind speed) are March and April (6.5mph).
The calmest month (with the lowest average wind speed) is January (5mph).
Average humidity in September
Layton, UT
- Average humidity in September: 44%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (38%).
Average rainfall in September
Layton, UT
- Average rainfall in September: 0.91"
The wettest months (with the highest rainfall) are January and February (1.61").
The driest months (with the least rainfall) are July and August (0.43").
Average rainfall days in September
Layton, UT
- Average rainfall days in September: 7.3 days
The month with the highest number of rainy days is April (12.3 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in September
Layton, UT
- Average snowfall in September: 0.31"
The month with the highest snowfall is January (11.02").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Layton, UT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Layton, UT
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 54min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).
Average sunshine days in September
Layton, UT
- Average sunshine days in September: 19.1 days
The month with the most sunshine days is October (21.5 days).
The month with the least sunshine days is February (12.7 days).
Average UV index in September
Layton, 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
Layton, UT
- Average cloud cover in September: 13
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
Layton, 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).
