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
The transition from August to September sees an average high-temperature of a pleasant 72.5°F (22.5°C), indicating a minor variance from the prior month. Throughout September, an average low-temperature of 54°F (12.2°C) is expected.Humidity
In Garner, the average relative humidity in September is 77%.Rainfall
In Garner, in September, it is raining for 6.6 days, with typically 0.51" (13mm) of accumulated precipitation. In Garner, during the entire year, the rain falls for 80.2 days and collects up to 6.14" (156mm) of precipitation.Snowfall
In Garner, Iowa, snow does not fall in June through September.Daylight
The average length of the day in September in Garner is 12h and 29min.On the first day of September in Garner, sunrise is at 6:39 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:56 pm CDT.
Sunshine
The average sunshine in September in Garner is 8.9h.UV index
In September, the average daily maximum UV index in Garner is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A daily high UV index of 4 in September leads to these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Garner?
What is the average humidity in September in Garner?
How many days does it rain in September in Garner?
When it does not snow in Garner?
Does it snow in Garner in September?
What is the average length of the day in September in Garner?
When are sunrise and sunset in September in Garner?
How many hours of sunshine does Garner have in September?
What is the UV index intensity in September in Garner?
Average temperature in September
Garner, IA
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in September: 54°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (10.2°F).
Average pressure in September
Garner, IA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in September
Garner, IA
- Average wind speed in September: 8.6mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.4mph).
Average humidity in September
Garner, IA
- Average humidity in September: 77%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Garner, IA
- Average rainfall in September: 0.51"
The wettest month (with the highest rainfall) is June (0.87").
The driest month (with the least rainfall) is January (0.2").
Average rainfall days in September
Garner, IA
- Average rainfall days in September: 6.6 days
The month with the highest number of rainy days is June (12 days).
The months with the least rainy days are January and February (1.7 days).
Average snowfall in September
Garner, IA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.14").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Garner, 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
Garner, IA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 5min
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 36min).
Average sunshine days in September
Garner, IA
- Average sunshine days in September: 20.5 days
The month with the most sunshine days is January (24.6 days).
The month with the least sunshine days is June (14.8 days).
Average UV index in September
Garner, IA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Garner, IA
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Garner, IA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Garner, Iowa, USA
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