September weather forecastEureka, UT
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Eureka, Utah, with an average temperature fluctuating between 75.6°F (24.2°C) and 50.2°F (10.1°C).Temperature
September brings a drop in Eureka's average high-temperature, falling from 84.6°F (29.2°C) in August to a still warm 75.6°F (24.2°C). From significant daily highs, Eureka's nights in September cool down to an average low-temperature of 50.2°F (10.1°C).Humidity
In Eureka, Utah, the average relative humidity in September is 40%.Rainfall
In Eureka, in September, during 7.4 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. Throughout the year, in Eureka, there are 99.7 rainfall days, and 11.61" (295mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Eureka is 12h and 26min.On the first day of September in Eureka, sunrise is at 6:57 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:11 pm MDT.
Sunshine
In Eureka, the average sunshine in September is 10.1h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 4 during September translates into the following directions:
Heed the precautions - It is counselled to guard against solar damage. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Eureka, UT
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 50.2°F
The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
Eureka, 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 (29.85"Hg).
Average wind speed in September
Eureka, UT
- Average wind speed in September: 5.7mph
The windiest months (with the highest average wind speed) are April and June (6.5mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).
Average humidity in September
Eureka, UT
- Average humidity in September: 40%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is June (34%).
Average rainfall in September
Eureka, UT
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is March (1.57").
The driest month (with the least rainfall) is June (0.43").
Average rainfall days in September
Eureka, UT
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is April (11.7 days).
The month with the least rainy days is June (5.3 days).
Average snowfall in September
Eureka, UT
- Average snowfall in September: 0"
The month with the highest snowfall is January (8.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Eureka, UT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Eureka, 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 24min).
- Average sunshine in September: 10h and 6min
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 48min).
Average sunshine days in September
Eureka, UT
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is June (22 days).
The month with the least sunshine days is February (13.9 days).
Average UV index in September
Eureka, UT
- Average UV index in September: 4
The months with the highest UV index are 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
Eureka, UT
- Average cloud cover in September: 10
The months with the most cloud cover are January and December (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in September
Eureka, 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).
