September weather forecastNavajo Mountain, UT
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Navajo Mountain, Utah, with temperature in the range of an average low of 63°F (17.2°C) and an average high of 82.4°F (28°C).Temperature
The arrival of September signals a subtle shift in temperature, down from a hot 90.5°F (32.5°C) in August to a warm 82.4°F (28°C). Throughout the month of September, Navajo Mountain expects an average low of 63°F (17.2°C).Humidity
In Navajo Mountain, the average relative humidity in September is 30%.Rainfall
In Navajo Mountain, in September, it is raining for 5.5 days, with typically 0.28" (7mm) of accumulated precipitation. In Navajo Mountain, during the entire year, the rain falls for 54.2 days and collects up to 4.17" (106mm) of precipitation.Snowfall
March through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 24min.On the first day of September in Navajo Mountain, sunrise is at 6:54 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:07 pm MDT.
Sunshine
In September, the average sunshine in Navajo Mountain is 10.2h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 6 in September translates into this advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Navajo Mountain, UT
- Average high temperature in September: 82.4°F
The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is January (42.4°F).
- Average low temperature in September: 63°F
The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure in September
Navajo Mountain, UT
- Average pressure in September: 29.93"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Navajo Mountain, UT
- Average wind speed in September: 5.7mph
The windiest months (with the highest average wind speed) are April and May (8.3mph).
The calmest month (with the lowest average wind speed) is January (4mph).
Average humidity in September
Navajo Mountain, UT
- Average humidity in September: 30%
The month with the highest relative humidity is January (64%).
The month with the lowest relative humidity is June (18%).
Average rainfall in September
Navajo Mountain, UT
- Average rainfall in September: 0.28"
The wettest month (with the highest rainfall) is July (0.55").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in September
Navajo Mountain, UT
- Average rainfall days in September: 5.5 days
The month with the highest number of rainy days is July (8.5 days).
The month with the least rainy days is June (2.4 days).
Average snowfall in September
Navajo Mountain, UT
- Average snowfall in September: 0"
The month with the highest snowfall is December (1.14").
The months with the least snowfall are March, April, May, June, July, August and September (0").
Average snowfall days in September
Navajo Mountain, UT
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are February and December (1.6 days).
The months with the least snowfall days are March, April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Navajo Mountain, UT
- Average daylight in September: 12h and 24min
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 42min).
- Average sunshine in September: 10h and 12min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 7h and 6min).
Average sunshine days in September
Navajo Mountain, UT
- Average sunshine days in September: 21.6 days
The month with the most sunshine days is November (27 days).
The month with the least sunshine days is July (17.9 days).
Average UV index in September
Navajo Mountain, UT
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Navajo Mountain, UT
- Average cloud cover in September: 9
The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 8).
Average visibility in September
Navajo Mountain, 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).
