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
Ellis's weather changes with the onset of September, slightly falling from a moderately hot 75.4°F (24.1°C) in August to a refreshing 65.7°F (18.7°C). Ellis undergoes a major shift from daytime highs, averaging an icy 41.5°F (5.3°C) during the night in September.Humidity
In September, the average relative humidity is 45%.Rainfall
In Ellis, in September, it is raining for 6.9 days, with typically 0.51" (13mm) of accumulated precipitation. Throughout the year, in Ellis, Idaho, there are 75.7 rainfall days, and 6.38" (162mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. September is the first month it typically snows in Ellis. Throughout September, in the average 0.5 snowfall days, it receives 0.67" (17mm) of snow. Throughout the year, there are 51.7 snowfall days, and 18.62" (473mm) of snow is accumulated.Daylight
In Ellis, the average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:59 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 7:17 pm MDT.
Sunshine
The average sunshine in September in Ellis, Idaho, is 9.5h.UV index
In Ellis, Idaho, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 3 during September leads to these instructions:
Take precautions - Protection against skin and eye damage is obliged. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Ellis?
What is the average humidity in September in Ellis?
How much does it rain in Ellis in September?
When does it start snowing in Ellis?
What is the average length of the day in September in Ellis?
When is the sunrise / sunset in September in Ellis?
How many hours of sunshine does Ellis have in September?
How high is the UV index in September in Ellis?
Average temperature in September
Ellis, ID
- Average high temperature in September: 65.7°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is December (26.1°F).
- Average low temperature in September: 41.5°F
The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).
Average pressure in September
Ellis, ID
- Average pressure in September: 29.98"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Ellis, ID
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are June and July (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).
Average humidity in September
Ellis, ID
- Average humidity in September: 45%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July and August (38%).
Average rainfall in September
Ellis, ID
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is June (1.1").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in September
Ellis, ID
- Average rainfall days in September: 6.9 days
The month with the highest number of rainy days is June (10.2 days).
The month with the least rainy days is January (3.8 days).
Average snowfall in September
Ellis, ID
- Average snowfall in September: 0.67"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are July and August (0").
Average snowfall days in September
Ellis, ID
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is December (10.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Ellis, 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 3min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).
Average sunshine days in September
Ellis, ID
- Average sunshine days in September: 21.6 days
The month with the most sunshine days is July (24.1 days).
The months with the least sunshine days are March and April (17.2 days).
Average UV index in September
Ellis, ID
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in September
Ellis, ID
- Average cloud cover in September: 16
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in September
Ellis, ID
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Ellis, Idaho, USA
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