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
With September's arrival, Smiths Ferry's weather changes as the average high-temperature falls from a warm 78.4°F (25.8°C) in August to a pleasant 69.1°F (20.6°C). Smiths Ferry sees a large disparity in day to night temperatures in September, with the night temperature dropping to an average of 43.3°F (6.3°C).Humidity
The average relative humidity in September in Smiths Ferry is 50%.Rainfall
In Smiths Ferry, during September, the rain falls for 7.7 days and regularly aggregates up to 0.79" (20mm) of precipitation. Throughout the year, there are 98.1 rainfall days, and 22.64" (575mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows in Smiths Ferry. Throughout September, in the average 0.5 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 93.8 snowfall days, and 104.45" (2653mm) of snow is accumulated.Daylight
In September, the average length of the day is 12h and 30min.On the first day of the month, sunrise is at 7:08 am and sunset at 8:19 pm. On the last day of September, sunrise is at 7:41 am and sunset at 7:26 pm MDT.
Sunshine
The average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September in Smiths Ferry is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In September, an average UV index of 3 transforms into the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
What is the usual temperature for Smiths Ferry in September?
What is the average humidity in September in Smiths Ferry?
How much does it rain in Smiths Ferry in September?
When does it start snowing in Smiths Ferry?
What is the average length of the day in September in Smiths Ferry?
When is the sunrise / sunset in September in Smiths Ferry?
How many hours of sunshine does Smiths Ferry have in September?
What is the UV index intensity in September in Smiths Ferry?
Average temperature in September
Smiths Ferry, ID
- Average high temperature in September: 69.1°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (28°F).
- Average low temperature in September: 43.3°F
The month with the highest average low temperature is August (50°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure in September
Smiths Ferry, ID
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Smiths Ferry, ID
- Average wind speed in September: 4.9mph
The windiest months (with the highest average wind speed) are March and April (5.3mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in September
Smiths Ferry, ID
- Average humidity in September: 50%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is August (42%).
Average rainfall in September
Smiths Ferry, ID
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is March (3.31").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in September
Smiths Ferry, ID
- Average rainfall days in September: 7.7 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in September
Smiths Ferry, ID
- Average snowfall in September: 0.08"
The month with the highest snowfall is January (23.07").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Smiths Ferry, ID
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is March (17 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Smiths Ferry, 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: 9h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Smiths Ferry, ID
- Average sunshine days in September: 20.4 days
The month with the most sunshine days is July (23.8 days).
The month with the least sunshine days is March (10.1 days).
Average UV index in September
Smiths Ferry, ID
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in September
Smiths Ferry, ID
- Average cloud cover in September: 17
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in September
Smiths Ferry, ID
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
Smiths Ferry, Idaho, USA
Weather forecast for your location
2. Allow the app to use your location
