September weather forecastLehi, UT
September
Weather in September
September serves as a gateway to fall in Lehi, as the temperatures start to drop and the landscape begins to transform its colors. The shift from the hot August is quite noticeable as temperatures drop to 74.1°F (23.4°C), paving the way for the cooler months. Leaves begin their transformation, adding hues of red, orange, and gold to the city's vistas. The crisp autumn air is laced with the distinctive scent of impending fall, making it a truly engaging weather experience. September does not completely abandon its ties with summer, as ample sunshine continues to bless the city, making outdoor activities enjoyable.Temperature
Lehi's transition into September involves a gentle shift in temperature, receding from 82.9°F (28.3°C) in August to a still warm 74.1°F (23.4°C). A dramatic downturn marks the September nights in Lehi, Utah, with lows averaging at a frosty 48.9°F (9.4°C).Humidity
The average relative humidity in September is 43%.Rainfall
In Lehi, Utah, in September, during 9.7 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 123.2 rainfall days, and 16.73" (425mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Lehi.Daylight
In Lehi, the average length of the day in September is 12h and 26min.On the first day of September in Lehi, Utah, 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
The average sunshine in September in Lehi, Utah, is 10h.UV index
The average daily maximum UV index in September in Lehi, Utah, is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: An average UV index of 4 in September transforms into this advice:
Prioritize safety - Suggestions to prevent sun damage are offered. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lehi, UT
- Average high temperature in September: 74.1°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The months with the lowest average high temperature are January and December (32.4°F).
- Average low temperature in September: 48.9°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in September
Lehi, 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 (29.86"Hg).
Average wind speed in September
Lehi, UT
- Average wind speed in September: 5.6mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest month (with the lowest average wind speed) is January (4.6mph).
Average humidity in September
Lehi, UT
- Average humidity in September: 43%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is July (38%).
Average rainfall in September
Lehi, UT
- Average rainfall in September: 0.98"
The wettest months (with the highest rainfall) are April and December (1.93").
The driest month (with the least rainfall) is June (0.75").
Average rainfall days in September
Lehi, UT
- Average rainfall days in September: 9.7 days
The month with the highest number of rainy days is May (14.3 days).
The months with the least rainy days are June and November (7.3 days).
Average snowfall in September
Lehi, UT
- Average snowfall in September: 0"
The month with the highest snowfall is January (11.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lehi, UT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lehi, UT
- Average daylight in September: 12h and 24min
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: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
Lehi, UT
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is February (11.4 days).
Average UV index in September
Lehi, 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
Lehi, 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
Lehi, 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).
