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
The onset of September is marked by a minor decrease in temperature, transitioning from a moderately hot 79.3°F (26.3°C) in August to an agreeable 71.4°F (21.9°C). In the month of September, Helper records a consistent average low-temperature of 49.8°F (9.9°C).Humidity
The average relative humidity in September in Helper is 40%.Rainfall
The month with the least rainfall in Helper is September, when the rain falls for 6.3 days and typically collects 0.47" (12mm) of precipitation.Snowfall
In Helper, snow does not fall in June through September.Daylight
The average length of the day in September in Helper is 12h and 26min.On the first day of the month, sunrise is at 6:52 am and sunset at 7:54 pm. On the last day of September, sunrise is at 7:19 am and sunset at 7:06 pm MDT.
Sunshine
In Helper, the average sunshine in September is 10.5h.UV index
In Helper, Utah, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Helper?
What is the average humidity in September in Helper?
What is the driest month in Helper?
How many days does it rain in September in Helper?
When it does not snow in Helper?
Does it snow in Helper in September?
What is the average length of the day in September in Helper?
When is the sunrise / sunset in September in Helper?
How many hours of sunshine does Helper have in September?
What is the UV index reading in September in Helper?
Average temperature in September
Helper, UT
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (82°F).
The months with the lowest average high temperature are January and December (31.6°F).
- Average low temperature in September: 49.8°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 (14.9°F).
Average pressure in September
Helper, 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 (29.84"Hg).
Average wind speed in September
Helper, UT
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is January (5mph).
Average humidity in September
Helper, UT
- Average humidity in September: 40%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is June (32%).
Average rainfall in September
Helper, UT
- Average rainfall in September: 0.47"
The wettest month (with the highest rainfall) is March (1.14").
The driest month (with the least rainfall) is September (0.47").
Average rainfall days in September
Helper, UT
- Average rainfall days in September: 6.3 days
The month with the highest number of rainy days is April (12.1 days).
The month with the least rainy days is November (5.1 days).
Average snowfall in September
Helper, UT
- Average snowfall in September: 0"
The month with the highest snowfall is December (7.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Helper, UT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Helper, 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 3min
The months with the most sunshine are June and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in September
Helper, UT
- Average sunshine days in September: 20.6 days
The month with the most sunshine days is June (22.1 days).
The month with the least sunshine days is April (13 days).
Average UV index in September
Helper, UT
- Average UV index in September: 4
The month with the highest UV index is 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
Helper, UT
- Average cloud cover in September: 11
The month with the most cloud cover is January (Cloud cover 33).
The month with the least cloud cover is September (Cloud cover 11).
Average visibility in September
Helper, 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).
Helper, Utah, USA
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