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's arrival subtly correlates with a reduction in the average high-temperature, down from 81.7°F (27.6°C) in August to a still warm 75.6°F (24.2°C). Throughout the month of September, Clive witnesses an average low-temperature of 55.9°F (13.3°C).Humidity
In September, the average relative humidity is 76%.Rainfall
In Clive, in September, during 11.5 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, there are 130.3 rainfall days, and 25.91" (658mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Clive, Iowa, is 12h and 28min.On the first day of September, sunrise is at 6:41 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:57 pm CDT.
Sunshine
In September, the average sunshine is 9.3h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Exercise prevention - Protecting skin and eyes from harm is required. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Clive have in September?
What is the UV index reading in September?
Average temperature in September
Clive, IA
- Average high temperature in September: 75.6°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in September
Clive, IA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Clive, IA
- Average wind speed in September: 8mph
The windiest months (with the highest average wind speed) are January, March and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Clive, IA
- Average humidity in September: 76%
The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Clive, IA
- Average rainfall in September: 2.68"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days in September
Clive, IA
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Clive, IA
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.37").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Clive, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Clive, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Clive, IA
- Average sunshine days in September: 17 days
The months with the most sunshine days are November and December (18.7 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in September
Clive, IA
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Clive, IA
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in September
Clive, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Clive, Iowa, USA
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