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 comes with a drop in the average high-temperature, falling from August's warm 76.6°F (24.8°C) to a refreshing 67.1°F (19.5°C). Throughout September, Lake Fork notes a dramatic plunge from the daily high to an average low-temperature of 41.9°F (5.5°C).Humidity
The average relative humidity in September in Lake Fork is 53%.Rainfall
In Lake Fork, in September, during 8.9 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Lake Fork, during the entire year, the rain falls for 116.3 days and collects up to 27.24" (692mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. September is the first month it typically snows. Throughout September, in the average 0.8 snowfall days, it receives 0.51" (13mm) of snow. Throughout the year, there are 119.5 snowfall days, and 130.79" (3322mm) of snow is accumulated.Daylight
The average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 7:07 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 7:25 pm MDT.
Sunshine
In Lake Fork, Idaho, the average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading 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 3 suggests this advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays. 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
What is the usual temperature for Lake Fork in September?
What is the average humidity in September?
How much does it rain in September?
When does it start snowing?
How many hours of daylight does Lake Fork have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Lake Fork, ID
- Average high temperature in September: 67.1°F
The warmest months (with the highest average high temperature) are July and August (76.6°F).
The month with the lowest average high temperature is December (26.4°F).
- Average low temperature in September: 41.9°F
The month with the highest average low temperature is August (48.2°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in September
Lake Fork, ID
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Lake Fork, ID
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is March (5.6mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).
Average humidity in September
Lake Fork, ID
- Average humidity in September: 53%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is August (45%).
Average rainfall in September
Lake Fork, ID
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is March (3.62").
The driest month (with the least rainfall) is July (0.51").
Average rainfall days in September
Lake Fork, ID
- Average rainfall days in September: 8.9 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (3.6 days).
Average snowfall in September
Lake Fork, ID
- Average snowfall in September: 0.51"
The month with the highest snowfall is January (26.89").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Lake Fork, ID
- Average snowfall days in September: 0.8 days
The month with the highest number of snowfall days is March (20.6 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Lake Fork, 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 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 4h and 0min).
Average sunshine days in September
Lake Fork, ID
- Average sunshine days in September: 18.1 days
The month with the most sunshine days is July (21.2 days).
The month with the least sunshine days is March (6.8 days).
Average UV index in September
Lake Fork, ID
- 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, November and December (UV index 1).
Average cloud cover in September
Lake Fork, ID
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in September
Lake Fork, 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).
Lake Fork, Idaho, USA
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