September weather forecastSouth Jordan, UT
September
Weather in September
With the arrival of September, South Jordan begins to embrace the initial signs of fall. September comes with a notable drop in temperatures, making the weather cooler and hinting at the winter knocking at the door. The humidity level again starts to increase and marks the start of the colder part of the year. More rainfall is observed in comparison to the previous months, given the start of autumn. So, ready or not, the change in the weather from September onwards is an appeal for the arrival of autumn and winter.Temperature
In September, the average high-temperature decreases from a moderately hot 83.7°F (28.7°C) in August to a still warm 74.3°F (23.5°C). Despite drastic daytime highs, South Jordan logs an average low-temperature reading of 50.4°F (10.2°C) throughout September.Humidity
In South Jordan, the average relative humidity in September is 42%.Rainfall
In South Jordan, during September, the rain falls for 8.1 days and regularly aggregates up to 0.91" (23mm) of precipitation. In South Jordan, during the entire year, the rain falls for 118.7 days and collects up to 16.89" (429mm) of precipitation.Snowfall
June through September are months without snowfall in South Jordan.Daylight
In September, the average length of the day is 12h and 27min.On the first day of the month, sunrise is at 6:55 am and sunset at 7:59 pm. On the last day of September, in South Jordan, sunrise is at 7:24 am and sunset at 7:10 pm MDT.
Sunshine
In September, the average sunshine is 10h.UV index
The average daily maximum UV index in September in South Jordan is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Be vigilant - Preventing sunburn is recommended. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. 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
South Jordan, UT
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in September: 50.4°F
The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in September
South Jordan, 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).
Average wind speed in September
South Jordan, UT
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is March (6.5mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).
Average humidity in September
South Jordan, UT
- Average humidity in September: 42%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (37%).
Average rainfall in September
South Jordan, UT
- Average rainfall in September: 0.91"
The wettest months (with the highest rainfall) are February, March and December (2.05").
The driest month (with the least rainfall) is June (0.63").
Average rainfall days in September
South Jordan, UT
- Average rainfall days in September: 8.1 days
The month with the highest number of rainy days is April (13.7 days).
The month with the least rainy days is June (7 days).
Average snowfall in September
South Jordan, UT
- Average snowfall in September: 0"
The month with the highest snowfall is January (11.18").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
South Jordan, UT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
South Jordan, 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: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in September
South Jordan, UT
- Average sunshine days in September: 19 days
The month with the most sunshine days is June (20.3 days).
The month with the least sunshine days is February (11.2 days).
Average UV index in September
South Jordan, UT
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
South Jordan, UT
- Average cloud cover in September: 12
The months with the most cloud cover are January and February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in September
South Jordan, 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).
