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 start of September signals a decrease in the average high-temperature, transitioning from a moderately hot 82.9°F (28.3°C) in August to an agreeable 72.5°F (22.5°C). Dubois measures a considerable dip from daytime highs with an average low-temperature of 47.1°F (8.4°C) during September.Humidity
The average relative humidity in September is 44%.Rainfall
In Dubois, Idaho, during September, the rain falls for 7.1 days and regularly aggregates up to 0.87" (22mm) of precipitation. Throughout the year, there are 97.5 rainfall days, and 11.85" (301mm) of precipitation is accumulated.Snowfall
Months with snowfall in Dubois are January through May, September through December. September is the first month it typically snows in Dubois. Throughout September, in the average 0.2 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 83.8 snowfall days, and 41.93" (1065mm) of snow is accumulated.Daylight
The average length of the day in September in Dubois, Idaho, is 12h and 29min.On the first day of the month, sunrise is at 6:52 am and sunset at 8:04 pm. On the last day of September, sunrise is at 7:26 am and sunset at 7:10 pm MDT.
Sunshine
In September, the average sunshine is 10h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average UV index of 4 in September transforms into this advice:
Heed the precautions - It is counselled to guard against solar damage. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Dubois in September?
What is the average humidity in September in Dubois?
How much does it rain in Dubois in September?
When does it start snowing in Dubois?
What is the average length of the day in September in Dubois?
When is the sunrise / sunset in September in Dubois?
How many hours of sunshine does Dubois have in September?
What is the UV index intensity in September in Dubois?
Average temperature in September
Dubois, ID
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is December (26.2°F).
- Average low temperature in September: 47.1°F
The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in September
Dubois, ID
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Dubois, ID
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is June (6.9mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in September
Dubois, ID
- Average humidity in September: 44%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (39%).
Average rainfall in September
Dubois, ID
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is January (1.5").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in September
Dubois, ID
- Average rainfall days in September: 7.1 days
The month with the highest number of rainy days is April (13 days).
The month with the least rainy days is July (5 days).
Average snowfall in September
Dubois, ID
- Average snowfall in September: 0.04"
The month with the highest snowfall is January (11.97").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
Dubois, ID
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is January (18.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Dubois, ID
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Dubois, ID
- Average sunshine days in September: 20.7 days
The month with the most sunshine days is July (24.8 days).
The month with the least sunshine days is February (10.6 days).
Average UV index in September
Dubois, ID
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Dubois, ID
- Average cloud cover in September: 16
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in September
Dubois, ID
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (3mi).
Dubois, Idaho, USA
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