September weather forecastFenn, ID
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Fenn, Idaho, with temperature in the range of an average low of 47.3°F (8.5°C) and an average high of 72.7°F (22.6°C).Temperature
September comes with a decrease in the average high-temperature, falling from a warm 82.6°F (28.1°C) in August to a pleasant 72.7°F (22.6°C). September nights in Fenn present a stark temperature decrease to a frosty 47.3°F (8.5°C).Humidity
In September, the average relative humidity is 53%.Rainfall
In Fenn, in September, during 7.8 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In Fenn, during the entire year, the rain falls for 146.2 days and collects up to 23.35" (593mm) of precipitation.Snowfall
Months with snowfall in Fenn 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. Throughout the year, there are 80.3 snowfall days, and 60.47" (1536mm) of snow is accumulated.Daylight
In September, the average length of the day in Fenn is 12h and 31min.On the first day of the month, sunrise is at 6:06 am and sunset at 7:22 pm. On the last day of September, in Fenn, sunrise is at 6:43 am and sunset at 6:26 pm PDT.
Sunshine
In September, the average sunshine in Fenn is 10h.UV index
In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 4 during September translates into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Fenn, 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
Fenn, 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
Fenn, 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
Fenn, 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
Fenn, 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
Fenn, 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
Fenn, 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
Fenn, 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
Fenn, ID
- Average daylight in September: 12h and 30min
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
Fenn, 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
Fenn, 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
Fenn, 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
Fenn, 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).
