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 to September, the average high-temperature falls from a moderately hot 84.6°F (29.2°C) to a still warm 75.6°F (24.2°C). The month of September sees a significant daily temperature drop, recording an average low-temperature of 50.2°F (10.1°C) in Mills.Humidity
In Mills, the average relative humidity in September is 40%.Rainfall
In Mills, during September, the rain falls for 7.4 days and regularly aggregates up to 0.59" (15mm) of precipitation. Throughout the year, there are 99.7 rainfall days, and 11.61" (295mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:57 am and sunset at 7:58 pm. On the last day of September, sunrise is at 7:24 am and sunset at 7:11 pm MDT.
Sunshine
In Mills, the average sunshine in September is 10.1h.UV index
In Mills, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 4 in September translates into this advice:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days 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 in Mills?
When is the sunrise / sunset in September?
How many hours of sunshine does Mills have in September?
How high is the UV index in September?
Average temperature in September
Mills, UT
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 50.2°F
The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
Mills, UT
- Average pressure in September: 29.95"Hg
The month with the highest atmospheric pressure is January (30.26"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in September
Mills, UT
- Average wind speed in September: 5.7mph
The windiest months (with the highest average wind speed) are April and June (6.5mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).
Average humidity in September
Mills, UT
- Average humidity in September: 40%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is June (34%).
Average rainfall in September
Mills, UT
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is March (1.57").
The driest month (with the least rainfall) is June (0.43").
Average rainfall days in September
Mills, UT
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is April (11.7 days).
The month with the least rainy days is June (5.3 days).
Average snowfall in September
Mills, UT
- Average snowfall in September: 0"
The month with the highest snowfall is January (8.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Mills, UT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mills, 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 24min).
- Average sunshine in September: 10h and 1min
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 48min).
Average sunshine days in September
Mills, UT
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is June (22 days).
The month with the least sunshine days is February (13.9 days).
Average UV index in September
Mills, UT
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Mills, UT
- Average cloud cover in September: 10
The months with the most cloud cover are January and December (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in September
Mills, 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).
Mills, Utah, USA
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