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
September brings a slight decrease in temperature, down from a moderately hot 85.6°F (29.8°C) in August to a still warm 78.3°F (25.7°C). In the month of September, the temperature in Heist generally rests at an average low of 58.6°F (14.8°C).Humidity
The average relative humidity in September in Heist is 32%.Rainfall
In Heist, during September, the rain falls for 7 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Heist, during the entire year, the rain falls for 75.1 days and collects up to 11.26" (286mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 25min.On the first day of September, sunrise is at 7:06 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 7:19 pm MDT.
Sunshine
In Heist, the average sunshine in September is 10.1h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A typical high UV index of 5 in September suggests the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Heist?
What is the average humidity in September in Heist?
How many days does it rain in September in Heist?
When it does not snow in Heist?
What is the average length of the day in September in Heist?
When are sunrise and sunset in September in Heist?
How long on average sun shines in September in Heist?
How high is the UV index in September in Heist?
Average temperature in September
Heist, UT
- Average high temperature in September: 78.3°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is December (41.5°F).
- Average low temperature in September: 58.6°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is December (25.5°F).
Average pressure in September
Heist, UT
- Average pressure in September: 29.91"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).
Average wind speed in September
Heist, UT
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are January, November and December (7.1mph).
Average humidity in September
Heist, UT
- Average humidity in September: 32%
The month with the highest relative humidity is January (65%).
The month with the lowest relative humidity is June (20%).
Average rainfall in September
Heist, UT
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is July (1.46").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in September
Heist, UT
- Average rainfall days in September: 7 days
The month with the highest number of rainy days is July (10.5 days).
The month with the least rainy days is June (3.1 days).
Average snowfall in September
Heist, UT
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.39").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Heist, UT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (4.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Heist, UT
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in September
Heist, UT
- Average sunshine days in September: 21.4 days
The month with the most sunshine days is June (25.4 days).
The months with the least sunshine days are July and August (18.3 days).
Average UV index in September
Heist, UT
- Average UV index in September: 5
The months with the highest UV index are May, 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
Heist, UT
- Average cloud cover in September: 9
The month with the most cloud cover is December (Cloud cover 28).
The month with the least cloud cover is August (Cloud cover 8).
Average visibility in September
Heist, UT
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Heist, Utah, USA
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