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 into September indicates a reduction in the average high-temperature, down to a pleasant 72°F (22.2°C) from August's moderately hot 82°F (27.8°C). In September, in Three Creek, the average low-temperature is a cool 52°F (11.1°C).Humidity
The average relative humidity in September is 36%.Rainfall
In September, the rain falls for 6.5 days. Throughout September, 0.51" (13mm) of precipitation is accumulated. Throughout the year, in Three Creek, there are 104.3 rainfall days, and 12.01" (305mm) of precipitation is accumulated.Snowfall
July through September are months without snowfall.Daylight
In Three Creek, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 7:07 am and sunset at 8:13 pm. On the last day of September, sunrise is at 7:37 am and sunset at 7:23 pm MDT.
Sunshine
In Three Creek, the average sunshine in September is 9.5h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: The daily maximum UV index of 4 in September interprets into the following advice:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
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 it does not snow?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Three Creek have in September?
What is the UV index reading in September?
Average temperature in September
Three Creek, ID
- Average high temperature in September: 72°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (31.1°F).
- Average low temperature in September: 52°F
The months with the highest average low temperature are July and August (59.5°F).
The coldest month (with the lowest average low temperature) is December (19.2°F).
Average pressure in September
Three Creek, ID
- Average pressure in September: 29.92"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Three Creek, ID
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in September
Three Creek, ID
- Average humidity in September: 36%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (30%).
Average rainfall in September
Three Creek, ID
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is December (1.5").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in September
Three Creek, ID
- Average rainfall days in September: 6.5 days
The month with the highest number of rainy days is April (14.3 days).
The month with the least rainy days is August (5.7 days).
Average snowfall in September
Three Creek, ID
- Average snowfall in September: 0"
The month with the highest snowfall is December (7.99").
The months with the least snowfall are July, August and September (0").
Average snowfall days in September
Three Creek, ID
- Average snowfall days in September: 0.3 days
The month with the highest number of snowfall days is December (15.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Three Creek, ID
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 9h and 3min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in September
Three Creek, ID
- Average sunshine days in September: 21.8 days
The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is March (11.3 days).
Average UV index in September
Three Creek, ID
- 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
Three Creek, ID
- Average cloud cover in September: 15
The month with the most cloud cover is December (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in September
Three Creek, ID
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Three Creek, Idaho, USA
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