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
As August makes way for September, Independence's average high-temperature eases from a moderately hot 78.3°F (25.7°C) to a pleasant 72.5°F (22.5°C). During September, Independence witnesses a consistent average low-temperature of 54°F (12.2°C).Humidity
In Independence, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 11.8 days. Throughout September, 2.72" (69mm) of precipitation is accumulated. In Independence, during the entire year, the rain falls for 140.6 days and collects up to 30" (762mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:50 pm CDT.
Sunshine
In Independence, the average sunshine in September is 9h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in Independence in September?
How many hours of daylight does Independence 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
Independence, IA
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).
Average pressure in September
Independence, IA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in September
Independence, IA
- Average wind speed in September: 8.2mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in September
Independence, IA
- Average humidity in September: 79%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Independence, IA
- Average rainfall in September: 2.72"
The wettest months (with the highest rainfall) are May and June (4.37").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days in September
Independence, IA
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is January (3.6 days).
Average snowfall in September
Independence, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Independence, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Independence, IA
- 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 6min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Independence, IA
- Average sunshine days in September: 15.4 days
The months with the most sunshine days are January, October and November (17.5 days).
The month with the least sunshine days is June (8.2 days).
Average UV index in September
Independence, IA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Independence, IA
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in September
Independence, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Independence, Iowa, USA
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