September weather forecastDubois, WY
September
Weather in September
September serves as a bridge between the heat of August and the autumn chill of October. This month experiences a decrease in rainfall, having just 0.71" (18mm) on average. The arrival of fall in September sees a slight increase in cloud cover, painting vivid landscapes filled with hues of yellow, orange, and red. The wind speed begins to pick up its pace, creating a whimsical atmosphere as leaves fall off the trees. Despite shorter daylight hours, the city remains well-lit under the afternoon sun.Temperature
September brings a minor shift in the average high-temperature, adjusting from a pleasant 71.8°F (22.1°C) in August to a comfortable 63.1°F (17.3°C). During September, Dubois detects a significant contrast from its daytime temperatures, with nights averaging at an icy 41.4°F (5.2°C).Humidity
In Dubois, the average relative humidity in September is 46%.Rainfall
In Dubois, in September, it is raining for 7.5 days, with typically 0.71" (18mm) of accumulated precipitation. In Dubois, during the entire year, the rain falls for 118.1 days and collects up to 9.06" (230mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows in Dubois. Throughout September, in the average 0.5 snowfall days, it receives 0.59" (15mm) of snow. In Dubois, during the entire year, snow falls for 81 days and aggregates up to 30.83" (783mm) of snow.Daylight
In September, the average length of the day is 12h and 29min.On the first day of September, sunrise is at 6:43 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:00 pm MDT.
Sunshine
The average sunshine in September is 10.7h.UV index
In Dubois, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dubois, WY
- Average high temperature in September: 63.1°F
The warmest month (with the highest average high temperature) is July (73.8°F).
The month with the lowest average high temperature is December (24.4°F).
- Average low temperature in September: 41.4°F
The month with the highest average low temperature is July (47.7°F).
The coldest month (with the lowest average low temperature) is December (8.2°F).
Average pressure in September
Dubois, WY
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Dubois, WY
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Dubois, WY
- Average humidity in September: 46%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (41%).
Average rainfall in September
Dubois, WY
- Average rainfall in September: 0.71"
The wettest month (with the highest rainfall) is May (1.46").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Dubois, WY
- Average rainfall days in September: 7.5 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is November (7 days).
Average snowfall in September
Dubois, WY
- Average snowfall in September: 0.59"
The month with the highest snowfall is April (6.54").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Dubois, WY
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is March (14.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Dubois, WY
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 10h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 48min).
Average sunshine days in September
Dubois, WY
- Average sunshine days in September: 17.2 days
The month with the most sunshine days is October (18.8 days).
The month with the least sunshine days is May (9 days).
Average UV index in September
Dubois, WY
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in September
Dubois, WY
- Average cloud cover in September: 14
The months with the most cloud cover are February and April (Cloud cover 32).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
Dubois, WY
- 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).
