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
A subtle change in temperatures is noted as August gives way to September, with average highs reducing from a moderately hot 82°F (27.8°C) to an agreeable 73.2°F (22.9°C). Fort Duchesne reports a marked divergence from daytime peaks throughout September, with lows averaging at a cool 50.9°F (10.5°C).Humidity
In Fort Duchesne, the average relative humidity in September is 37%.Rainfall
In September, in Fort Duchesne, the rain falls for 6.9 days. Throughout September, 0.47" (12mm) of precipitation is accumulated. In Fort Duchesne, during the entire year, the rain falls for 74.4 days and collects up to 5.94" (151mm) of precipitation.Snowfall
In Fort Duchesne, snow does not fall in May through September.Daylight
In Fort Duchesne, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 6:47 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:02 pm MDT.
Sunshine
The average sunshine in September in Fort Duchesne is 10.7h.UV index
In Fort Duchesne, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 4 during September translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Fort Duchesne have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Fort Duchesne have in September?
What is the UV index intensity in September?
Average temperature in September
Fort Duchesne, UT
- Average high temperature in September: 73.2°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in September
Fort Duchesne, UT
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Fort Duchesne, UT
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is June (7mph).
The calmest month (with the lowest average wind speed) is January (3.8mph).
Average humidity in September
Fort Duchesne, UT
- Average humidity in September: 37%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is June (31%).
Average rainfall in September
Fort Duchesne, UT
- Average rainfall in September: 0.47"
The wettest months (with the highest rainfall) are March and May (0.67").
The driest month (with the least rainfall) is November (0.24").
Average rainfall days in September
Fort Duchesne, UT
- Average rainfall days in September: 6.9 days
The month with the highest number of rainy days is July (9.4 days).
The month with the least rainy days is November (2.3 days).
Average snowfall in September
Fort Duchesne, UT
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.69").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Fort Duchesne, UT
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Fort Duchesne, UT
- Average daylight in September: 12h and 2min
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 4min
The months with the most sunshine are June and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 42min).
Average sunshine days in September
Fort Duchesne, UT
- Average sunshine days in September: 20.7 days
The month with the most sunshine days is November (25.8 days).
The month with the least sunshine days is July (16.8 days).
Average UV index in September
Fort Duchesne, 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, October, November and December (UV index 2).
Average cloud cover in September
Fort Duchesne, UT
- Average cloud cover in September: 11
The month with the most cloud cover is February (Cloud cover 27).
The months with the least cloud cover are August and September (Cloud cover 11).
Average visibility in September
Fort Duchesne, UT
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Fort Duchesne, Utah, USA
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