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
September weather is marked by a drop in the average high-temperature, falling from a moderately hot 82.6°F (28.1°C) in August to a pleasant 72.7°F (22.6°C). With the onset of night in September, White Bird reveals a significant decrease in temperature, averaging at a frosty 47.3°F (8.5°C).Humidity
In September, the average relative humidity is 53%.Rainfall
In White Bird, in September, it is raining for 7.8 days, with typically 0.94" (24mm) of accumulated precipitation. Throughout the year, there are 146.2 rainfall days, and 23.35" (593mm) 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 0.3 snowfall days, it receives 0.75" (19mm) of snow. In White Bird, during the entire year, snow falls for 80.3 days and aggregates up to 60.47" (1536mm) of snow.Daylight
In September, the average length of the day is 12h and 31min.On the first day of the month, sunrise is at 6:07 am and sunset at 7:22 pm. On the last day of September, sunrise is at 6:43 am and sunset at 6:26 pm PDT.
Sunshine
The average sunshine in September is 10h.UV index
In White Bird, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, the maximum UV index of 4 suggests this advice:
Ensure safety - Sun damage prevention is strongly urged. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
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?
What time are sunrise and sunset in September?
How many hours of sunshine does White Bird have in September?
What is the UV index reading in September?
Average temperature in September
White Bird, ID
- Average high temperature in September: 72.7°F
The warmest month (with the highest average high temperature) is August (82.6°F).
The month with the lowest average high temperature is December (33.6°F).
- Average low temperature in September: 47.3°F
The month with the highest average low temperature is August (53.2°F).
The coldest month (with the lowest average low temperature) is December (21.7°F).
Average pressure in September
White Bird, ID
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The months with the lowest atmospheric pressure are June and August (29.94"Hg).
Average wind speed in September
White Bird, ID
- Average wind speed in September: 3.9mph
The windiest months (with the highest average wind speed) are January and November (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).
Average humidity in September
White Bird, ID
- Average humidity in September: 53%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (47%).
Average rainfall in September
White Bird, ID
- Average rainfall in September: 0.94"
The wettest month (with the highest rainfall) is April (2.91").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in September
White Bird, ID
- Average rainfall days in September: 7.8 days
The month with the highest number of rainy days is April (19.3 days).
The month with the least rainy days is August (6.8 days).
Average snowfall in September
White Bird, ID
- Average snowfall in September: 0.75"
The month with the highest snowfall is February (12.95").
The months with the least snowfall are June, July and August (0").
Average snowfall days in September
White Bird, ID
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (16.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
White Bird, ID
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 10h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in September
White Bird, ID
- Average sunshine days in September: 20 days
The month with the most sunshine days is August (22.2 days).
The month with the least sunshine days is March (7.5 days).
Average UV index in September
White Bird, ID
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
White Bird, ID
- Average cloud cover in September: 21
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in September
White Bird, ID
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
White Bird, Idaho, USA
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