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
In September, the average high-temperature goes from a warm 83.7°F (28.7°C) in August to a pleasant 73°F (22.8°C). Portage notes a substantial temperature decline from the daytime peaks throughout September, with an average nighttime temperature of 49.5°F (9.7°C).Humidity
In Portage, the average relative humidity in September is 42%.Rainfall
In Portage, during September, the rain falls for 8.6 days and regularly aggregates up to 1.18" (30mm) of precipitation. In Portage, during the entire year, the rain falls for 118.3 days and collects up to 16.42" (417mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. September is the first month it typically snows in Portage. Throughout September, in the average 0.1 snowfall days, it receives 0.35" (9mm) of snow. Throughout the year, in Portage, there are 68.7 snowfall days, and 48.82" (1240mm) of snow is accumulated.Daylight
In September, the average length of the day in Portage is 12h and 28min.On the first day of the month, sunrise is at 6:55 am and sunset at 8:01 pm. On the last day of September, sunrise is at 7:25 am and sunset at 7:11 pm MDT.
Sunshine
In September, the average sunshine is 9.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What are the temperatures in Portage in September?
What is the average humidity in September in Portage?
How much does it rain in Portage in September?
When does it start to snow in Portage?
How many hours of daylight does Portage have in September?
When are sunrise and sunset in September in Portage?
How many hours of sunshine does Portage have in September?
What is the UV index intensity in September in Portage?
Average temperature in September
Portage, UT
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is December (28.9°F).
- Average low temperature in September: 49.5°F
The month with the highest average low temperature is July (56.3°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in September
Portage, UT
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Portage, UT
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).
Average humidity in September
Portage, UT
- Average humidity in September: 42%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (35%).
Average rainfall in September
Portage, UT
- Average rainfall in September: 1.18"
The wettest month (with the highest rainfall) is February (2.05").
The driest month (with the least rainfall) is July (0.55").
Average rainfall days in September
Portage, UT
- Average rainfall days in September: 8.6 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in September
Portage, UT
- Average snowfall in September: 0.35"
The month with the highest snowfall is January (13.78").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Portage, UT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Portage, UT
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 9h and 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Portage, UT
- Average sunshine days in September: 18.6 days
The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is February (9.9 days).
Average UV index in September
Portage, 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 January (UV index 1).
Average cloud cover in September
Portage, UT
- Average cloud cover in September: 15
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in September
Portage, UT
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
Portage, Utah, USA
Weather forecast for your location
2. Allow the app to use your location
