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 transition to September results in a modest reduction in average high-temperature, moving from a moderately hot 80.1°F (26.7°C) in August to a pleasant 72.3°F (22.4°C). In September, the nighttime temperature plummets remarkably from the daily apex to a steady average of 49.3°F (9.6°C).Humidity
In September, the average relative humidity is 40%.Rainfall
In September, the rain falls for 8.5 days. Throughout September, 0.75" (19mm) of precipitation is accumulated. Throughout the year, there are 113.1 rainfall days, and 14.72" (374mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.12" (3mm) of snow. In Joseph, during the entire year, snow falls for 55.6 days and aggregates up to 44.8" (1138mm) of snow.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September, sunrise is at 6:58 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 7:12 pm MDT.
Sunshine
In Joseph, the average sunshine in September is 10h.UV index
In Joseph, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When does it start to snow?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Joseph, UT
- Average high temperature in September: 72.3°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in September: 49.3°F
The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in September
Joseph, UT
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in September
Joseph, UT
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is June (7.4mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).
Average humidity in September
Joseph, 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 (31%).
Average rainfall in September
Joseph, UT
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is March (1.85").
The driest month (with the least rainfall) is June (0.51").
Average rainfall days in September
Joseph, UT
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is November (5.7 days).
Average snowfall in September
Joseph, UT
- Average snowfall in September: 0.12"
The month with the highest snowfall is January (8.66").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Joseph, UT
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is December (12.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Joseph, UT
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 0min).
Average sunshine days in September
Joseph, UT
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is June (21.5 days).
The month with the least sunshine days is July (12.3 days).
Average UV index in September
Joseph, UT
- Average UV index in September: 4
The months with the highest UV index are June and 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
Joseph, UT
- Average cloud cover in September: 10
The month with the most cloud cover is December (Cloud cover 36).
The months with the least cloud cover are August and September (Cloud cover 10).
Average visibility in September
Joseph, 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).
Joseph, Utah, USA
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