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 implies a soft temperature shift, with average high-temperatures reducing from August's 81.1°F (27.3°C) to a still warm 75.4°F (24.1°C). Dallas Center, in the month of September, anticipates a consistent average low-temperature of 55.9°F (13.3°C).Humidity
In September, the average relative humidity is 76%.Rainfall
In Dallas Center, in September, during 10.5 rainfall days, 1.73" (44mm) of precipitation is typically accumulated. In Dallas Center, during the entire year, the rain falls for 112.7 days and collects up to 16.06" (408mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Dallas Center, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:12 am and sunset at 6:58 pm CDT.
Sunshine
The average sunshine in September is 9.3h.UV index
In September, the average daily maximum UV index in Dallas Center is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. To protect against the Sun's most potent rays, avoid direct exposure around midday. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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 September?
How many hours of daylight does Dallas Center have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Dallas Center have in September?
What is the UV index reading in September?
Average temperature in September
Dallas Center, IA
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in September
Dallas Center, 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
Dallas Center, IA
- Average wind speed in September: 8.1mph
The windiest months (with the highest average wind speed) are January and April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in September
Dallas Center, IA
- Average humidity in September: 76%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Dallas Center, IA
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is June (2.68").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in September
Dallas Center, IA
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in September
Dallas Center, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Dallas Center, IA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Dallas Center, 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 12min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in September
Dallas Center, IA
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in September
Dallas Center, 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
Dallas Center, IA
- Average cloud cover in September: 30
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Dallas Center, IA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Dallas Center, Iowa, USA
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